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Sample records for transplant center contingency

  1. A novel patient-centered "intention-to-treat" metric of U.S. lung transplant center performance.

    Science.gov (United States)

    Maldonado, Dawn A; RoyChoudhury, Arindam; Lederer, David J

    2018-01-01

    Despite the importance of pretransplantation outcomes, 1-year posttransplantation survival is typically considered the primary metric of lung transplant center performance in the United States. We designed a novel lung transplant center performance metric that incorporates both pre- and posttransplantation survival time. We performed an ecologic study of 12 187 lung transplant candidates listed at 56 U.S. lung transplant centers between 2006 and 2012. We calculated an "intention-to-treat" survival (ITTS) metric as the percentage of waiting list candidates surviving at least 1 year after transplantation. The median center-level 1-year posttransplantation survival rate was 84.1%, and the median center-level ITTS was 66.9% (mean absolute difference 19.6%, 95% limits of agreement 4.3 to 35.1%). All but 10 centers had ITTS values that were significantly lower than 1-year posttransplantation survival rates. Observed ITTS was significantly lower than expected ITTS for 7 centers. These data show that one third of lung transplant candidates do not survive 1 year after transplantation, and that 12% of centers have lower than expected ITTS. An "intention-to-treat" survival metric may provide a more realistic expectation of patient outcomes at transplant centers and may be of value to transplant centers and policymakers. © 2017 The American Society of Transplantation and the American Society of Transplant Surgeons.

  2. Transplant programs, centers, and institutes: what does it all mean?

    Science.gov (United States)

    Abouljoud, Marwan; Whitehouse, Sarah

    2013-04-01

    There are more than 250 transplant centers in the USA, but variation continues to exist in organizational structure for transplant multidisciplinary services. We reviewed the literature to explore the definitions for transplant organizational structures and address existing rationale for the development of the integrated transplant service line. No standard definitions exist to differentiate the use of program, center, institute, or service line. A survey of 20 multiorgan transplant centers in the USA showed that most were named centers or institutes, but some were organized as departments and service lines. The prevailing themes were the perceived need for autonomy of the transplant entity, alignment among services and finances, and the alignment of authority with responsibility. In addition, perceived benefits included growth, alignment, efficiency, and resource allocation. The multidisciplinary nature of transplantation generally has been fit into the matrix organizational model, although many hospitals today have departments, centers, institutes, and service lines structures. Integration has been viewed as beneficial by most transplant entities reviewed, with a sense that it is better adapted for the evolving healthcare climate.

  3. Lied Transplant Center

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-02-01

    The Department of Energy has prepared an Environmental Assessment (DOE/EA-1143) evaluating the construction, equipping and operation of the proposed Lied Transplant Center at the University of Nebraska Medical Center in Omaha, Nebraska. Based on the analysis in the EA, the DOE has determined that the proposed action does not constitute a major federal action significantly affecting the quality of the human environment within the meaning of the National Environmental Policy Act of 1969 (NEPA). Therefore, the preparation of an Environmental Statement in not required.

  4. Competitive Market Analysis of Transplant Centers and Discrepancy of Wait-Listing of Recipients for Kidney Transplantation

    OpenAIRE

    Cho, P. S.; Saidi, R. F.; Cutie, C. J.; Ko, D. S. C.

    2015-01-01

    Background: There are over 250 kidney transplant programs in the USA. Objective: To determine if highly competitive regions, defined as regions with a higher number of transplant centers, will approve and wait-list more end-stage renal disease (ESRD) candidates for transplant despite consistent incidence and prevalence of ESRD nationwide. Methods: ESRD Network and OPTN data completed in 2011 were obtained from all transplant centers including listing data, market saturation, market share, org...

  5. The transplant center and business unit as a model for specialized care delivery.

    Science.gov (United States)

    Gaber, A Osama; Schwartz, Roberta L; Bernard, David P; Zylicz, Susan

    2013-12-01

    Transplant centers are valuable assets to a transplantation hospital and essential to organize the delivery of patient care. A transplant center defined around physicians and activities of caring for patients with organ failure creates a team better equipped to manage care across the continuum of the diseases treated by transplantation. Through monitoring of clinical and financial outcomes, the transplant center can better respond to the changing regulatory and financial landscape of health care. This article seeks to explain the major organizational challenges facing the transplant center and how a transplant center can best serve its patients and parent organization. Copyright © 2013 Elsevier Inc. All rights reserved.

  6. Transplant organizational structures: viewpoints from established centers.

    Science.gov (United States)

    Abouljoud, M; Klintmalm, G; Whitehouse, S

    2012-10-01

    This personal viewpoint report summarizes the responses of a survey targeting established transplant programs with a structured framework, such as center, institute, or department, and stability of leadership to assure valuable experiential observations. The 18-item survey was sent to 20 US institutions that met inclusion criteria. The response rate was 100%. Seventeen institutions had a distinct transplant governance structure. A majority of respondents perceived that their type of transplant structure was associated with enhanced recognition within their institution (85%), improved regulatory compliance (85%), transplant volume growth (75%), improved quality outcomes (75%) and increased funding for transplant-related research (75%). The prevailing themes in respondents' remarks were the perceived need for autonomy of the transplant entity, alignment among services and finances and alignment of authority with responsibility. Many respondents suggested that a dialogue be opened about effective transplant infrastructure that overcomes the boundaries of traditional academic department silos. © Copyright 2012 The American Society of Transplantation and the American Society of Transplant Surgeons.

  7. Patient housing barriers to hematopoietic cell transplantation: results from a mixed-methods study of transplant center social workers.

    Science.gov (United States)

    Preussler, Jaime M; Mau, Lih-Wen; Majhail, Navneet S; Bevans, Margaret; Clancy, Emilie; Messner, Carolyn; Parran, Leslie; Pederson, Kate A; Ferguson, Stacy Stickney; Walters, Kent; Murphy, Elizabeth A; Denzen, Ellen M

    2016-03-01

    Hematopoietic cell transplantation (HCT) is performed in select centers in the United States (U.S.), and patients are often required to temporarily relocate to receive care. The purpose of this study was to identify housing barriers impacting access to HCT and potential solutions. A mixed-methods primary study of HCT social workers was conducted to learn about patient housing challenges and solutions in place that help address those barriers. Three telephone focus groups were conducted with adult and pediatric transplant social workers (n = 15). Focus group results informed the design of a national survey. The online survey was e-mailed to a primary social worker contact at 133 adult and pediatric transplant centers in the U.S. Transplant centers were classified based on the patient population cared for by the social worker. The survey response rate was 49%. Among adult programs (n = 45), 93% of centers had patients that had to relocate closer to the transplant center to proceed with HCT. The most common type of housing option offered was discounted hotel rates. Among pediatric programs (n = 20), 90% of centers had patients that had to relocate closer to the transplant center to proceed with HCT. Ronald McDonald House was the most common option available. This study is the first to explore housing challenges faced by patients undergoing HCT in the U.S. from the perspective of social workers and to highlight solutions that centers use. Transplant centers will benefit from this knowledge by learning about options for addressing housing barriers for their patients.

  8. SINGLE-CENTER EXPERIENCE OF ABO-INCOMPATIBLE LIVER TRANSPLANTATION

    Directory of Open Access Journals (Sweden)

    S. V. Gautier

    2011-01-01

    Full Text Available Since 2008 up to 2010 eight ABO-incompatible liver transplantations have been performed in our center: one of them was urgent liver transplantation to adult patient from deceased donor, other seven were transplantations of left lateral segment to children from living relative donors. Own experience, as well as world one, proves, that barrier of ABO-incompatibility can be overcome more successfully in liver transplantation, particularly in pediatric population, that in other solid organs transplantation. Good results can be achieved even with less ag- gressive immunosuppressive therapy. Recipient conditioning before operation can significantly improve results of ABO-incompatible liver transplantation, but as own experience has shown, often there’s no need to hold some special preparation of children, because their anti-ABO antibodies are very low or absent before transplantation and do not increase after it. Thereby ABO-incompatible liver transplantation is reasonable in urgent cases and in pediatric population because of the limited pull of living relative donors for children. 

  9. Analysis of differences in outcome of two European liver transplant centers

    NARCIS (Netherlands)

    Nemes, B; Polak, W; Ther, G; Hendriks, H; Kobori, L; Porte, RJ; Sarvary, E; de Jong, KP; Doros, A; Gerlei, Z; van den Berg, AP; Fehervari, [No Value; Gorog, D; Peeters, PM; Jaray, J; Slooff, MJH

    Authors analyzed the differences in the outcome of two European liver transplant centers differing in case volume and experience. The first was the Transplantation and Surgical Clinic, Semmelweis University, Budapest, Hungary (SEB) and the second the University Medical Center Groningen, Groningen,

  10. Quarterly Performance/Technical Report of the National Marrow Donor Program

    National Research Council Canada - National Science Library

    Setterholm, Michelle

    2009-01-01

    .... Contingency Preparedness: Collect information from transplant centers, build awareness of the Transplant Center Contingency Planning Committee and educate the transplant community about the critical importance of establishing...

  11. Thirty Years of Pancreas Transplantation at Leiden University Medical Center : Long-Term Follow-Up in a Large Eurotransplant Center

    NARCIS (Netherlands)

    Kopp, Wouter H; Verhagen, Merel J J; Blok, Joris J; Huurman, Volkert A L; de Fijter, Johan W; de Koning, Eelco J; Putter, Hein; Baranski, Andzrej G; Schaapherder, Alexander F M; Braat, Andries E; Ringers, Jan

    2015-01-01

    BACKGROUND: An overview of 30 years of pancreas transplantation at a high volume center. Analysis of patient survival- and graft survival-associated risk factors. METHODS: All pancreas transplantations performed in our center from January 1, 1984, till December 31, 2012, were evaluated. Covariates

  12. Post–Endoscopic Retrograde Cholangiopancreaticography complications in liver transplanted patients, a single-center experience

    DEFF Research Database (Denmark)

    Ambrus, R B; Svendsen, Lars Bo; Hillingsø, J G

    2015-01-01

    BACKGROUND: Complications in the biliary tract occur in 5%-30% after liver transplantation and the main part of the complications is successfully managed with endoscopic retrograde cholangiopancreaticography (ERCP). The incidence and risk factors for post-ERCP complications in liver transplantation...... patients are not well described. Our objective was to define the frequency of post-ERCP complications in liver transplantation patients at the Abdominal Center, Rigshospitalet, the only Liver Transplantation Center in Denmark. METHODS: Retrospective study of all ERCPs performed in liver transplantation...... and cholangitis occurred after two procedures, respectively. Multivariate analysis concerning overall complications identified biliary sphincterotomy (p = 0.006) and time since liver transplantation within 90 days postoperatively (p = 0.044) as risk factors for post-ERCP complications. Specifically concerning...

  13. Measuring transplant center performance: The goals are not controversial but the methods and consequences can be.

    Science.gov (United States)

    Jay, Colleen; Schold, Jesse D

    2017-03-01

    Risks of regulatory scrutiny has generated widespread concern about increasingly risk averse transplant center behaviors regarding both donor and candidate acceptance patterns. To address potential unintended consequences threatening access to care, we discuss recent changes in regulatory metrics and potential improvements in quality oversight of transplant centers. Despite many recent changes to one-year patient and graft survival regulatory criteria, the capacity to accurately identify true underperforming centers and avoiding false positive flagging remains an area of great concern. Numerous studies have demonstrated restrictions in transplant volume and access following transplant center flagging. Current regulatory criteria are limited in their capacity to accurately identify poorly performing centers and potentially encourage risk-averse behavior by transplant centers. Efforts to address these concerns should focus on (1) improving risk-adjustment models with better data which captures the acuity of candidate and donor risk, (2) reconsidering primary outcomes measured to assess comprehensive transplant center performance, (3) improving education to address rational or perceived disincentives, and (4) using data more effectively to share best practices.

  14. Association of Distance From a Transplant Center With Access to Waitlist Placement, Receipt of Liver Transplantation, and Survival Among US Veterans

    Science.gov (United States)

    Goldberg, David S.; French, Benjamin; Forde, Kimberly A.; Groeneveld, Peter W.; Bittermann, Therese; Backus, Lisa; Halpern, Scott D.; Kaplan, David E.

    2015-01-01

    IMPORTANCE Centralization of specialized health care services such as organ transplantation and bariatric surgery is advocated to improve quality, increase efficiency, and reduce cost. The effect of increased travel on access and outcomes from these services is not fully understood. OBJECTIVE To evaluate the association between distance from a Veterans Affairs (VA) transplant center (VATC) and access to being waitlisted for liver transplantation, actually having a liver transplant, and mortality. DESIGN, SETTING, AND PARTICIPANTS Retrospective study of veterans meeting liver transplantation eligibility criteria from January 1, 2003, until December 31, 2010, using data from the Veterans Health Administration’s integrated, national, electronic medical record linked to Organ Procurement and Transplantation Network data. MAIN OUTCOMES AND MEASURES The primary outcome was being waitlisted for transplantation at a VATC. Secondary outcomes included being waitlisted at any transplant center, undergoing a transplantation, and survival. RESULTS From 2003–2010, 50 637 veterans were classified as potentially eligible for transplant; 2895 (6%) were waitlisted and 1418 of those were waitlisted (49%) at 1 of the 5 VATCs. Of 3417 veterans receiving care at a VA hospital located within 100 miles from a VATC, 244 (7.1%) were waitlisted at a VATC and 372 (10.9%) at any transplant center (VATC and non-VATCs). Of 47 219 veterans receiving care at a VA hospital located more than 100 miles from a VATC, 1174 (2.5%) were waitlisted at a VATC and 2523 (5.3%) at any transplant center (VATC and non-VATCs). In multivariable models, increasing distance to closest VATC was associated with significantly lower odds of being waitlisted at a VATC (odds ratio [OR], 0.91 [95% CI, 0.89–0.93] for each doubling in distance) or any transplant center (OR, 0.94 [95% CI, 0.92–0.96] for each doubling in distance). For example, a veteran living 25 miles from a VATC would have a 7.4% (95% CI, 6.6%–8

  15. Evaluation of Flagging Criteria of United States Kidney Transplant Center Performance: How to Best Define Outliers?

    Science.gov (United States)

    Schold, Jesse D; Miller, Charles M; Henry, Mitchell L; Buccini, Laura D; Flechner, Stuart M; Goldfarb, David A; Poggio, Emilio D; Andreoni, Kenneth A

    2017-06-01

    Scientific Registry of Transplant Recipients report cards of US organ transplant center performance are publicly available and used for quality oversight. Low center performance (LP) evaluations are associated with changes in practice including reduced transplant rates and increased waitlist removals. In 2014, Scientific Registry of Transplant Recipients implemented new Bayesian methodology to evaluate performance which was not adopted by Center for Medicare and Medicaid Services (CMS). In May 2016, CMS altered their performance criteria, reducing the likelihood of LP evaluations. Our aims were to evaluate incidence, survival rates, and volume of LP centers with Bayesian, historical (old-CMS) and new-CMS criteria using 6 consecutive program-specific reports (PSR), January 2013 to July 2015 among adult kidney transplant centers. Bayesian, old-CMS and new-CMS criteria identified 13.4%, 8.3%, and 6.1% LP PSRs, respectively. Over the 3-year period, 31.9% (Bayesian), 23.4% (old-CMS), and 19.8% (new-CMS) of centers had 1 or more LP evaluation. For small centers (evaluations (52 vs 13 PSRs) for 1-year mortality with Bayesian versus new-CMS criteria. For large centers (>183 transplants/PSR), there were 3-fold additional LP evaluations for 1-year mortality with Bayesian versus new-CMS criteria with median differences in observed and expected patient survival of -1.6% and -2.2%, respectively. A significant proportion of kidney transplant centers are identified as low performing with relatively small survival differences compared with expected. Bayesian criteria have significantly higher flagging rates and new-CMS criteria modestly reduce flagging. Critical appraisal of performance criteria is needed to assess whether quality oversight is meeting intended goals and whether further modifications could reduce risk aversion, more efficiently allocate resources, and increase transplant opportunities.

  16. Orthotopic heart transplantation in the prince sultan cardiac center.

    Science.gov (United States)

    Al Fagih, M R

    1996-01-01

    In this report we attempt to demonstrate the efforts involved in establishing and organizing the heart transplant program at the Armed Forces Hospital in Riyadh, Saudi Arabia. From 1986 to date, 25 orthotopic heart transplants were performed at this center. Patient age ranged from 22 months to 57 years; 4 patients were below 12 years of age and 4 aged 50 years and above. The incidations for transplantation were cardiomyopathy in 15 patients, ischemic heart disease in 6 patients, and valvular heart disease in 4 patients. Fourteen recipients have died. Three of them were classified as hospital deaths, occuring before the patient could be discharged after the procedure; the reminder died from rejection and associated problems. Eight patients of them died within the first year. The longest survival period was almost 8 years. The overall 8 years survival rate was 45%, which is comparable to the international figures. Shortage of donors may affect the future of the transplant programs. Increasing the awareness of the public about the importance of organ donation and transplantation is crucial in this regard.

  17. Choosing a Transplant Center

    Science.gov (United States)

    ... however you can Daughter's dying wish became mother's motivation Be The Match Blog Stories Anna, transplant recipient ... for transplant costs. Location – You might have to travel to receive a transplant. Consider how far the ...

  18. Survival in pediatric lung transplantation: The effect of center volume and expertise.

    Science.gov (United States)

    Khan, Muhammad S; Zhang, Wei; Taylor, Rachel A; Dean McKenzie, E; Mallory, George B; Schecter, Marc G; Morales, David L S; Heinle, Jeffrey S; Adachi, Iki

    2015-08-01

    Institutional operative volume has been shown to impact outcomes of various procedures including lung transplantation (LTx). We sought to determine whether this holds true with pediatric LTx by comparing outcomes of adult centers (with larger overall volume) to those of pediatric centers (with smaller volume but more pediatric-specific experience). A retrospective analysis of the Organ Procurement and Transplant Network data was performed. Centers were categorized as either adult (LTx volume predominantly in adult patients), high-volume pediatric (HVP, ≥4 LTxs/year), or low-volume pediatric (LVP, HVP 3 [5%], LVP 8 [13%]). Although adult centers had larger overall LTx volume, their pediatric experiences were severely limited (median 1/year). In younger children, HVP centers were significantly better than LVP centers for patient survival (half-life: 7.3 vs 2.9 years, p = 0.002). Similarly, in older children and adolescents, HVP centers were significantly better than adult centers for patient survival (half-life: 4.6 vs 2.5 years, p = 0.001). Of note, even LVP centers tended to have longer patient survival than adult centers (p = 0.064). Multivariable analysis identified adult centers as an independent risk factor for graft failure (hazard ratio: 1.5, p < 0.001) as with LVP (hazard ratio: 1.3, p = 0.0078). Despite larger overall clinical volume, outcomes among pediatric LTx recipients in adult centers are not superior to those of pediatric centers. Not only center volume but pediatric-specific experience has an impact on outcomes in pediatric LTx. Copyright © 2015 International Society for Heart and Lung Transplantation. Published by Elsevier Inc. All rights reserved.

  19. Liver transplantation utilizing old donor organs: a German single-center experience.

    Science.gov (United States)

    Rauchfuss, F; Voigt, R; Dittmar, Y; Heise, M; Settmacher, U

    2010-01-01

    Due to the current profound lack of suitable donor organs, transplant centers are increasingly forced to accept so-called marginal organs. One criterion for marginal donors is the donor age >65 years. We have presented herein the impact of higher donor age on graft and patient survival. Since 2004, 230 liver transplantations have been performed at our center, including 54 donor organs (23.5%) from individuals >65 years of age. We performed a retrospective analysis of recipient and graft survivals. The overall 1-year mortality was 22.2% (12/54) among recipients of organs from older donors versus 19.5% among recipients whose donors were donor organs were grouped according to age, the 1-year mortality in patients receiving organs from donors aged 65-69 years was 30% (6/20); 70-74 years, 29.4% (5/17); and donors >75 years, 5.9% (1/17). There was no significant correlation between mortality rate and the number of additional criteria of a marginal donor organ. The current lack of donor organs forces transplant centers to accept organs from older individuals; increasingly older patients are being recruited for the donor pool. Our results showed that older organs may be transplanted with acceptable outcomes. This observation was consistent with data from the current literature. It should be emphasized, however, that caution is advised when considering the acceptance of older organs for patients with hepatitis C-related cirrhosis.

  20. The Bone Marrow Transplantation Center of the National Cancer Institute - its resources to assist patients with bone marrow failure

    International Nuclear Information System (INIS)

    Tabak, Daniel

    1997-01-01

    This paper describes the bone marrow transplantation center of the brazilian National Cancer Institute, which is responsible for the cancer control in Brazil. The document also describes the resources available in the Institute for assisting patients presenting bone marrow failures. The Center provides for allogeneic and autologous bone marrow transplants, peripheral stem cell transplants, umbilical cord collections and transplants, and a small experience with unrelated bone marrow transplants. The Center receives patient from all over the country and provides very sophisticated medical care at no direct cost to the patients

  1. Indications for Corneal Transplantation at a Tertiary Referral Center in Tehran

    Directory of Open Access Journals (Sweden)

    Mohammad Zare

    2010-01-01

    Full Text Available Purpose: To report the indications and techniques of corneal transplantation at a tertiary referral center in Tehran over a 3-year period. Methods: Records of patients who had undergone any kind of corneal transplantation at Labbafinejad Medical Center, Tehran, Iran from March 2004 to March 2007 were reviewed to determine the indications and types of corneal transplantation. Results: During this period, 776 eyes of 756 patients (including 504 male subjects with mean age of 41.3±21.3 years underwent corneal transplantation. The most common indication was keratoconus (n=317, 40.8% followed by bullous keratopathy (n=90, 11.6%, non-herpetic corneal scars (n=62, 8.0%, infectious corneal ulcers (n=61, 7.9%, previously failed grafts (n=61, 7.9%, endothelial and stromal corneal dystrophies (n=28, 3.6%, and trachoma keratopathy (n=26, 3.3%. Other indications including Terrien′s marginal degeneration, post-LASIK keratectasia, trauma, chemical burns, and peripheral ulcerative keratitis constituted the rest of cases. Techniques of corneal transplantation included penetrating keratoplasty (n=607, 78.2%, deep anterior lamellar keratoplasty (n=108, 13.9%, conventional lamellar keratoplasty (n=44, 5.7%, automated lamellar therapeutic keratoplasty (n=8, 1.0%, and Descemet stripping endothelial keratoplasty (n=6, 0.8% in descending order. The remaining cases were endothelial keratoplasty and sclerokeratoplasty. Conclusion: In this study, keratoconus was the most common indication for penetrating keratoplasty which was the most prevalent technique of corneal transplantation. However, deep anterior lamellar keratoplasty is emerging as a growing alternative for corneal pathologies not involving the endothelium.

  2. Contingency proportion systematically influences contingency learning.

    Science.gov (United States)

    Forrin, Noah D; MacLeod, Colin M

    2018-01-01

    In the color-word contingency learning paradigm, each word appears more often in one color (high contingency) than in the other colors (low contingency). Shortly after beginning the task, color identification responses become faster on the high-contingency trials than on the low-contingency trials-the contingency learning effect. Across five groups, we varied the high-contingency proportion in 10% steps, from 80% to 40%. The size of the contingency learning effect was positively related to high-contingency proportion, with the effect disappearing when high contingency was reduced to 40%. At the two highest contingency proportions, the magnitude of the effect increased over trials, the pattern suggesting that there was an increasing cost for the low-contingency trials rather than an increasing benefit for the high-contingency trials. Overall, the results fit a modified version of Schmidt's (2013, Acta Psychologica, 142, 119-126) parallel episodic processing account in which prior trial instances are routinely retrieved from memory and influence current trial performance.

  3. Center Variation and the Effect of Center and Provider Characteristics on Clinical Outcomes in Kidney Transplantation: A Systematic Review of the Evidence

    Directory of Open Access Journals (Sweden)

    Anne Tsampalieros

    2017-10-01

    Full Text Available Background: Kidney transplantation is the best treatment option for patients with end-stage renal disease. While patient-level factors affecting survival are established, the presence of variation in the management of transplant recipients remains unknown. Objective: The objective of this study was to examine center variation in kidney transplantation and identify center and provider characteristics that may be associated with clinical outcomes. Design: This is a systematic review. Data sources: Ovid Medline, Embase, and Cochrane library from inception to June 2016 were used. Study eligibility: Any study examining the association between center or provider characteristics and graft or patient survival, quality of life, or functional status were included. Results: We identified 6327 records and 24 studies met eligibility. Most studies used data registries. Characteristics evaluated include center volume (n = 17, provider volume (n = 2, provider experience (n = 1, center type (n = 2, and location of follow-up (n = 1. Outcomes assessed included graft survival (n = 24 and patient survival (n = 9. Significant center variation was described in 12 of 15 and 5 of 7 studies for graft and patient survival. There was a significant and positive association between center volume and graft and patient survival in 8 and 2 studies, respectively. Provider experience and volume were significantly associated with less allograft loss and provider volume with lower risk of death. There was no association between graft survival and location of follow-up or center type. Limitations: There was substantial heterogeneity in the variables assessed and methodology used to analyze associations. Conclusion: This systematic review found center variation in kidney transplantation. Future studies in the current era are necessary to better evaluate this important topic.

  4. High Center Volume Does Not Mitigate Risk Associated with Using High Donor Risk Organs in Liver Transplantation.

    Science.gov (United States)

    Beal, Eliza W; Black, Sylvester M; Mumtaz, Khalid; Hayes, Don; El-Hinnawi, Ashraf; Washburn, Kenneth; Tumin, Dmitry

    2017-09-01

    High-risk donor allografts increase access to liver transplant, but potentially reduce patient and graft survival. It is unclear whether the risk associated with using marginal donor livers is mitigated by increasing center experience. The United Network for Organ Sharing registry was queried for adult first-time liver transplant recipients between 2/2002 and 12/2015. High donor risk was defined as donor risk index >1.9, and 1-year patient and graft survival were compared according to donor risk index in small and large centers. Multivariable Cox regression estimated the hazard ratio (HR) associated with using high-risk donor organs, according to a continuous measure of annual center volume. The analysis included 51,770 patients. In 67 small and 67 large centers, high donor risk index predicted increased mortality (p = 0.001). In multivariable analysis, high-donor risk index allografts predicted greater mortality hazard at centers performing 20 liver transplants per year (HR 1.35; 95% CI 1.22, 1.49; p donor risk index and center volume was not statistically significant (p = 0.747), confirming that the risk associated with using marginal donor livers was comparable between smaller and larger centers. Results were consistent when examining graft loss. At both small and large centers, high-risk donor allografts were associated with reduced patient and graft survival after liver transplant. Specific strategies to mitigate the risk of liver transplant involving high-risk donors are needed, in addition to accumulation of center expertise.

  5. Epidemiological profile of nonmelanoma skin cancer in renal transplant recipients: experience of a referral center*

    Science.gov (United States)

    Ferreira, Flávia Regina; Ogawa, Marilia Marufuji; Nascimento, Luiz Fernando Costa; Tomimori, Jane

    2014-01-01

    BACKGROUND Nonmelanoma skin cancer is the most common form of cancer in humans and also the malignant disease that is increasingly common among kidney transplant recipients. OBJECTIVE To determine the epidemiological characteristics of renal transplant recipients with nonmelanoma skin cancer seen at a referral transplantation center. METHODS Cross-sectional descriptive study with renal transplant recipients presenting nonmelanoma skin cancer, treated at a transplantation referral center between 08/01/2004 and 08/31/2009. Analyzed variables were: gender, age, skin phototype, occupational and recreational sun exposure, use of photoprotection, personal and family history of non-melanoma skin cancer, clinical type and location, time between transplantation and the appearance of the first nonmelanoma skin cancer, occurrence of viral warts, timing of transplantation, type of donor, cause of kidney failure, previous transplants, comorbidities, pre-transplant dialysis, type and duration of dialysis. RESULTS 64 subjects were included. Males - 71.9%; low skin phototypes (up to Fitzpatrick III) - 89%; mean age - 57.0 years - and mean age at transplant - 47.3 years; sun exposure - 67.2% occupational - and 64.1% recreational; photoprotection - 78.2% (although only 34.4% in a regular manner); squamous cell carcinoma - 67.2%; squamous cell carcinoma/basal cell carcinoma ratio - 2:1; personal history of nonmelanoma skin cancer - 25% - and family history - 10.9%; location at photoexposed area - 98.4%; average latency time between transplantation and first nonmelanoma skin cancer appearance - 78.3 months; viral warts (HPV) after transplant - 53.1%; average timing of transplantation - 115.5 months; living donor - 64.1%; triple regimen (antirejection) - 73.2%; comorbidities - 92.2%; pre-transplant dialysis - 98.4%; hemodialysis - 71.7%; average duration of dialysis - 39.1 months; previous transplants - 3.1%; hypertension as cause of renal failure - 46.9%. CONCLUSION This study allowed

  6. Liver transplantation using organs from deceased organ donors: a single organ transplant center experience.

    Science.gov (United States)

    Han, Ming; Guo, Zhi-Yong; Zhao, Qiang; Wang, Xiao-Ping; Yuan, Xiao-Peng; Jiao, Xing-Yuan; Yang, Chun-Hua; Wang, Dong-Ping; Ju, Wei-Qiang; Wu, Lin-Wei; Hu, An-Bin; Tai, Qiang; Ma, Yi; Zhu, Xiao-Feng; He, Xiao-Shun

    2014-08-01

    In 2011, a pilot program for deceased organ donation was initiated in China. We describe the first successful series of liver transplants in the pilot program. From July 2011 to August 2012, our center performed 26 liver transplants from a pool of 29 deceased donors. All organ donation and allograft procurement were conducted according to the national protocol. The clinical data of donors and recipients were collected and summarized retrospectively. Among the 29 donors, 24 were China Category II donors (organ donation after cardiac death), and five were China Category III donors (organ donation after brain death followed by cardiac death). The recipients were mainly the patients with hepatocellular carcinoma. The one-year patient survival rate was 80.8% with a median follow-up of 422 (2-696) days. Among the five mortalities during the follow-up, three died of tumor recurrence. In terms of post-transplant complications, 9 recipients (34.6%) experienced early allograft dysfunction, 1 (3.8%) had non-anastomotic biliary stricture, and 1 (3.8%) was complicated with hepatic arterial thrombosis. None of these complications resulted in patient death. Notably, primary non-function was not observed in any of the grafts. With careful donor selection, liver transplant from deceased donors can be performed safely and plays a critical role in overcoming the extreme organ shortage in China.

  7. Hematopoietic Stem Cell Transplantation Activity and Trends at a Pediatric Transplantation Center in Turkey During 1998-2008

    Directory of Open Access Journals (Sweden)

    Volkan Hazar

    2012-06-01

    Full Text Available OBJECTIVE: The aim of this study was to document hematopoietic stem cell transplantation (HSCT activity and trends at our treatment center. METHODS: Data collected over a 10-year period were retrospectively analyzed, concentrating primarily on types of HSCT, transplant-related mortality (TRM, stem cell sources, indications for HSCT, and causes of death following HSCT. RESULTS: In total, 222 allogeneic (allo-HSCT (87.4% and 32 autologous (auto-HSCT (12.6% procedures were performed between 1998 and 2008. Stem cells obtained from unrelated donors were used in 22.6% (50/222 of the allo- HSCTs. Cord blood was the source of hematopoietic stem cells (HSC in 12.2% of all transplants. The most common indication for allo-HSCT was hemoglobinopathy (43.2%, versus neuroblastoma (53.1% for auto-HSCT. The TRM rate 1 year post transplantation was 18.3% ± 2.5% for all transplants, but differed according to transplantation type (23.5% ± 7.9% for auto-HSCT and 17.5% ± 2.6% for allo-HSCT. The most common cause of death 1 year post HSCT was infection (35.9%. CONCLUSION: The TRM rate in the patients that underwent allo-HSCT was similar to that which has been previously reported; however, the TRM rate in the patients that underwent auto-HSCT was higher than previously reported in developed countries. The selection of these patients to be transplanted must be made attentively.

  8. Mycophenolate mofetil in pediatric renal transplantation: A single center experience.

    LENUS (Irish Health Repository)

    Raheem, Omer A

    2011-05-01

    Raheem OA, Kamel MH, Daly PJ, Mohan P, Little DM, Awan A, Hickey DP. Mycophenolate mofetil in pediatric renal transplantation: A single center experience. Pediatr Transplantation 2011: 15:240-244. © 2009 John Wiley & Sons A\\/S. Abstract:  We assessed our long-term experience with regards to the safety and efficacy of MMF in our pediatric renal transplant population and compared it retrospectively to our previous non-MMF immunosuppressive regimen. Forty-seven pediatric renal transplants received MMF as part of their immunosuppressive protocol in the period from January 1997 till October 2006 (MMF group). A previously reported non-MMF group of 59 pediatric renal transplants was included for comparative analysis (non-MMF group). The MMF group comprised 29 boys and 18 girls, whereas the non-MMF group comprised 34 boys and 25 girls. Mean age was 11.7 and 12 yr in the MMF and non-MMF groups, respectively. The incidence of acute rejection episodes was 11 (23.4%) and 14 (24%) in the MMF and non-MMF group, respectively. Two (3.3%) grafts were lost in the non-MMF group compared with one (2.1%) in the MMF group. Twenty-one (44.68%) patients in the MMF group developed post-transplant infections compared with 12 (20.33%) in the non-MMF group (p < 0.0001). In conclusion, the use of MMF in pediatric renal transplantation was not associated with a lower rejection rate or immunological graft loss. It did, however, result in a significantly higher rate of viral infections.

  9. Living Related Donor Kidney Transplantation in Libya: A Single Center Experience

    Directory of Open Access Journals (Sweden)

    Elusta Ahmed

    2008-01-01

    Full Text Available The aim of this study is to report the experience from a single center in Libya, on the prevailing live-related kidney transplantation program. The results of three years work on kidney transplantation at the Tripoli Central Hospital (National Organ Transplant Program in Libya were evaluated. The transplant program was launched on 17 th August, 2004 and 135 patients have been transplanted since then till 17 th August, 2007. All donors and recipients were screened thoroughly prior to transplant and monitored closely in the post-transplant period. Our immuno-suppressive protocol was cyclosporine-based. Among the 135 accepted pairs, donors and reci-pients were genetically-related in 133 cases (98.5% and emotionally-related in two others. The mean donor age was 37 ± 9.5 years (range 18-56 years and recipient age 37 ± 13.6 years (range 7-67 years. There were 95 males (70.4% and 40 females (29.6% among the recipients while among the donors, there were 102 males (75.6% and 33 females (24.4%. Delayed graft function was seen in three patients (2.2%, acute rejection in six (4.4%, post-transplant urinary tract infection in six (4.4%, pneumonia in three (2.2%, ureteric kink in two (1.5% and urine leak in four (3.0%. Graft survival at 36 months was 93.3% while patient survival at the same period was 96.3%. This report indicates that the results of our transplant program are good and comparable with other international programs.

  10. Single-center experience in double kidney transplantation.

    Science.gov (United States)

    Fontana, I; Magoni Rossi, A; Gasloli, G; Santori, G; Giannone, A; Bertocchi, M; Piaggio, F; Bocci, E; Valente, Umberto

    2010-05-01

    Use of organs from marginal donors for transplantation is a current strategy to expand the organ donor pool. Its efficacy is universally accepted among data from multicenter studies. Herein, we have reviewed outcomes of double kidney transplantation (DKT) over an 9-year experience in our center. The aim of this study was to evaluate possible important differences between a monocenter versus multicenter studies. Between 1999 and 2008, we performed 59 DKT. Recipient mean age was 63 +/- 5 years. Mean HLA-A, -B, and -DR mismatches were 3.69 +/- 0.922. Donor mean age was 69 +/- 7 years and mean creatinine clearance was 69.8 +/- 30.8 mL/min. Proteinuria was detected in three donors (5%). Mean cold ischemia and warm ischemia times were 1130 +/- 216 and 48 +/- 11 minutes, respectively. The right and left kidney scores were 4.18 +/- 2 and 4.21 +/- 2, respectively. Thirty patients (51%) displayed good postoperative renal function; 22 (37%), acute tubular necrosis with postoperative dialysis; 3 (5%), acute rejection episodes; 4 (7%), single-graft transplantectomy due to vascular thrombosis; 1 (2%), a retransplantation; 5 (8%), a lymphocele; 3 (5%) vescicoureteral reflux or stenosis requiring surgical correction. Cytomegalovirus infection was detected in five patients (8%). In three patients (5%) displayed de novo neoplasia. Three patients showed chronic rejection (5%), whereas we observed a cyclosporine-related toxicity in 7 (12%). Nine patients (15%) developed iatrogenic diabetes. Patient and graft survivals after 3 years from DKT were 93% and 86.3%, respectively. In this study, we applied successfully a widespread score to allocate organs to single kidney transplantation or DKT. In our experience, the score is suitable for the organ allocation but it may be overprotective, excluding potentially suitable organs for a single transplantation. Copyright (c) 2010 Elsevier Inc. All rights reserved.

  11. Transplant Nurses' Work Environment: A Cross-Sectional Multi-Center Study.

    Science.gov (United States)

    Kugler, Christiane; Akca, Selda; Einhorn, Ina; Rebafka, Anne; Russell, Cynthia L

    2016-09-01

    BACKGROUND Numerically, nurses represent the largest healthcare profession, thus setting norms for the quality and safety of direct patient care. Evidence of a global shortage of nurses in all clinical practice settings across different healthcare systems and countries has been documented. The aims of the present study were: (1) to assess work environments in a sample of German transplant nurses, and (2) to compare their statements with a US-based sample. MATERIAL AND METHODS In a cross-sectional study, 181 transplant nurses from 16 German transplant centers provided information on their work environments. The translated version of the Job Design (JD) and Job Satisfaction (JS) survey showed satisfactory internal consistency for the JD (0.78) and JS (0.93) subscales. German nurses' work environments were compared with 331 transplant nurses from the US. RESULTS The majority of transplant nurses were female (81.8%), 55.4% were age 21-40 years, and 78.1% were employed full-time. German (versus US) transplant nurses reported their job design to be best for 'skill varieties' (p≤0.0002), and worst for 'autonomy' (p≤0.01). Job satisfaction was best with 'opportunities for autonomy and growth' (p≤0.0001), and 'pay and benefits' (p≤0.0001) was lowest. A higher professional degree (OR 1.57; p≤0.03; 95% CI 1.19-2.86), and longer time in transplant (OR 1.24; p≤0.001; 95% CI 1.11-1.38) showed a positive impact on German transplant nurses' perceptions of 'job satisfaction'. Nurses with time-dependent working contracts perceived more stress negatively affecting job satisfaction (OR 1.13; p≤0.009; 95% CI 1.02-12.82). CONCLUSIONS German specialty nurses working in the field of solid organ transplantation rate their work environments with respect to job design and job satisfaction as satisfactory. Institutions' investment into satisfactory nurse work environments and specializing nurses might increase the quality of care, thus improving patient outcomes.

  12. Media appeals by pediatric patients for living donors and the impact on a transplant center.

    Science.gov (United States)

    Verghese, Priya S; Garvey, Catherine A; Mauer, Michael S; Matas, Arthur J

    2011-03-27

    Little is published regarding the effect of advertising for kidney donors on transplant centers. At our center, families of nine children used media appeals. Per candidate, there were 8 to 260 potential donor calls, 92 (11.6%) were medically ineligible, 326 (41.1%) voluntarily did not proceed or an alternate donor had been approved, 38 (4.8%) were ABO incompatible, and 327 (41.1%) had positive crossmatch or unsuitable human leukocyte antigens. Media appeals resulted in four living donor transplants and five nondirected donors to other candidates, and we made directed changes in our center. The ethical debate of advertising for organ donors continues.

  13. Cytomegalovirus infection management in solid organ transplant recipients across European centers in the time of molecular diagnostics: An ESGICH survey.

    Science.gov (United States)

    Navarro, David; San-Juan, Rafael; Manuel, Oriol; Giménez, Estela; Fernández-Ruiz, Mario; Hirsch, Hans H; Grossi, Paolo Antonio; Aguado, José María

    2017-12-01

    Scant information is available about how transplant centers are managing their use of quantitative molecular testing (QNAT) assays for active cytomegalovirus (CMV) infection monitoring in solid organ transplant (SOT) recipients. The current study was aimed at gathering information on current practices in the management of CMV infection across European centers in the era of molecular testing assays. A questionnaire-based cross-sectional survey study was conducted by the European Study Group of Infections in Immunocompromised Hosts (ESGICH) of the Society of Clinical Microbiology and Infectious Diseases (ESCMID). The invitation and a weekly reminder with a personal link to an Internet service provider (https://es.surveymonkey.com/) was sent to transplant physicians, transplant infectious diseases specialists, and clinical virologists working at 340 European transplant centers. Of the 1181 specialists surveyed, a total of 173 responded (14.8%): 73 transplant physicians, 57 transplant infectious diseases specialists, and 43 virologists from 173 institutions located at 23 different countries. The majority of centers used QNAT assays for active CMV infection monitoring. Most centers preferred commercially available real-time polymerase chain reaction (RT-PCR) assays over laboratory-developed procedures for quantifying CMV DNA load in whole blood or plasma. Use of a wide variety of DNA extraction platforms and RT-PCR assays was reported. All programs used antiviral prophylaxis, preemptive therapy, or both, according to current guidelines. However, the centers used different criteria for starting preemptive antiviral treatment, for monitoring systemic CMV DNA load, and for requesting genotypic assays to detect emerging CMV-resistant variants. Significant variation in CMV infection management in SOT recipients still remains across European centers in the era of molecular testing. International multicenter studies are required to achieve commutability of CMV testing and

  14. Hematopoietic Stem Cell Transplantation Activity in Pediatric Cancer between 2008 and 2014 in the United States: A Center for International Blood and Marrow Transplant Research Report.

    Science.gov (United States)

    Khandelwal, Pooja; Millard, Heather R; Thiel, Elizabeth; Abdel-Azim, Hisham; Abraham, Allistair A; Auletta, Jeffery J; Boulad, Farid; Brown, Valerie I; Camitta, Bruce M; Chan, Ka Wah; Chaudhury, Sonali; Cowan, Morton J; Angel-Diaz, Miguel; Gadalla, Shahinaz M; Gale, Robert Peter; Hale, Gregory; Kasow, Kimberly A; Keating, Amy K; Kitko, Carrie L; MacMillan, Margaret L; Olsson, Richard F; Page, Kristin M; Seber, Adriana; Smith, Angela R; Warwick, Anne B; Wirk, Baldeep; Mehta, Parinda A

    2017-08-01

    This Center for International Blood and Marrow Transplant Research report describes the use of hematopoietic stem cell transplantation (HSCT) in pediatric patients with cancer, 4408 undergoing allogeneic (allo) and3076 undergoing autologous (auto) HSCT in the United States between 2008 and 2014. In both settings, there was a greater proportion of boys (n = 4327; 57%), children reports of transplant practices in the United States. Copyright © 2017 The American Society for Blood and Marrow Transplantation. Published by Elsevier Inc. All rights reserved.

  15. Renal and obstetric outcomes in pregnancy after kidney transplantation: Twelve-year experience in a Singapore transplant center.

    Science.gov (United States)

    Kwek, Jia Liang; Tey, Vanessa; Yang, Liying; Kanagalingam, Devendra; Kee, Terence

    2015-09-01

    Renal and obstetric outcomes in pregnancy after kidney transplantation in Singapore were last studied in 2002. A review of these outcomes in Singapore is now timely following advances in transplant and obstetric medicine. The aim was to evaluate the renal and obstetric outcomes in pregnancy after kidney transplantation in a Singapore tertiary center. Kidney transplant recipients who underwent pregnancy after transplantation at Singapore General Hospital between January 2001 and December 2012 were identified. Data on demographics, comorbidities and clinical outcomes were collected. There were 10 pregnancies identified in nine recipients. The median age of recipient at childbearing was 34.6 years (IQR, 32.8-36.8) and the median interval from transplantation to conception was 69 months (IQR, 38-97). There was no difference between the median pre-pregnancy estimated glomerular filtration rate (eGFR) (47.9 mL/min/1.73 m(2); IQR, 38.4-56.8) and median eGFR at time of last post-partum follow up (43.9 mL/min/1.73 m(2); IQR, 34.5-48.7, P = 0.549). Borderline allograft rejection occurred in one recipient (10.0%) 36 days after birth due to non-adherence to immunosuppressive medication, with subsequent allograft loss 37 months after birth. No mortalities were recorded during the study period. All the 10 pregnancies (100%) ended in singleton live births. Pre-eclampsia occurred in five pregnancies (50.0%), and there were seven (70.0%) preterm deliveries. The median gestational age was 35.4 weeks (IQR, 32.6-38.2) and the median birthweight was 2353 g (IQR, 1811-2648). Post-transplantation pregnancies ended successfully with no significant worsening of allograft function, but they were associated with risks to both recipients and newborns. © 2015 Japan Society of Obstetrics and Gynecology.

  16. Pancreas transplantation with grafts from donors deceased after circulatory death (DCD) : 5 years single center experience

    NARCIS (Netherlands)

    Kopp, Wouter H; Lam, Hwai-Ding; Schaapherder, Alexander F M; Huurman, Volkert A L; van der Boog, Paul; de Koning, Eelco; de Fijter, Johan W; Baranski, Andrzej; Braat, Andries E

    2017-01-01

    INTRODUCTION: Donation after circulatory death (DCD) pancreas transplantation has been shown to be an additional way to deal with donor organ shortages. The results of 5-year DCD pancreas transplantation are presented. METHODS: A retrospective, single center analysis (2011 - 2015) was performed to

  17. Renal transplantation at the Johns Hopkins Comprehensive Transplant Center.

    Science.gov (United States)

    Montgomery, Robert A; Cooper, Matthew; Kraus, Edward; Rabb, Hamid; Samaniego, Milagros; Simpkins, Christopher E; Sonnenday, Christopher J; Ugarte, Richard M; Warren, Daniel S; Zachary, Andrea A

    2003-01-01

    A stagnant supply of transplantable organs in the face of a relentless burgeoning of transplant waiting lists has created a crisis. Necessity continues to be the mother of invention and as the crisis has deepened it has served as a crucible for the development of new ways to think about perennial problems. Our program has taken a 2-pronged approach to increasing the organ supply for our patients. First, through innovations like the laparoscopic donor nephrectomy, ABO-incompatible and positive-crossmatch transplantation protocols, unconventional paired kidney exchanges, and the use of altruistic donors we have more than doubled our utilization of live donor organs. At the same time, we have developed algorithms and interrogative techniques to enhance the intelligent use of kidneys from expanded criteria donors for patients who do not have an available live donor. The laparoscopic nephrectomy has proven to be a safe and effective way of removing a significant barrier to live donation. Our results from 100 ABOi, (+)XM, and PKE transplants are similar to national statistics for compatible live donor transplants, suggesting that existing paradigms of compatibility can be safely expanded. These encouraging early outcomes and the savings they transmit to the health care system have allowed us to obtain insurance coverage for the InKTP programs, setting the stage for further expansion of these opportunities to broaden the options for patients with end-stage renal disease.

  18. Posttransplant malignancies in renal transplant recipients: 22-years experience from a single center in Pakistan.

    Science.gov (United States)

    Yunus, Mahira; Aziz, Tahir; Mubarak, Muhammed

    2012-01-01

    To study the incidence, types and distribution pattern of malignant tumors in renal transplant recipients at a single center in Pakistan. This retrospective study was conducted at Sindh Institute of Urology and Transplantation (SIUT) and included all transplant patients on regular follow-up from November 1986 to December 2008. The original biopsy reports and case files of all patients who developed posttransplant malignancies were reviewed and relevant demographic, clinical, radiological, and histopathological data were retrieved and analyzed. SPSS version 10.0 was used for statistical analysis. Over 22 years of study period, 1816 renal transplants were carried out at our center. Among these, 44 patients developed malignancies constituting an overall incidence rate of 2.4%. All patients in this study were males with a mean age of 34.9±9.5 years (range: 9 to 60 years). The most common type of malignancy was lymphoma (27 patients, 61.4%), followed by Kaposi's sarcoma (11 patients, 25%) and skin malignancies (3 patients, 6.8%). One case each of adenocarcinoma of the gallbladder, acute myeloid leukemia (AML), conjunctival carcinoma-in-situ and seminoma were also diagnosed. Posttransplant malignancies occurring in our renal transplant recipients show different incidence rates and patterns as compared with western studies.

  19. The benefits of cancer screening in kidney transplant recipients: a single-center experience.

    Science.gov (United States)

    Kato, Taigo; Kakuta, Yoichi; Abe, Toyofumi; Yamanaka, Kazuaki; Imamura, Ryoichi; Okumi, Masayoshi; Ichimaru, Naotsugu; Takahara, Shiro; Nonomura, Norio

    2016-02-01

    The frequency of malignancy is increasing in kidney transplant recipients. Posttransplant malignancy (PTM) is a major cause of long-term graft survival inhibition. In this study, we evaluated the frequency and prognosis of PTM at our center and examined the efficacy of cancer screening. Between 1972 and 2013, 750 patients were followed-up at our center. Annual physical examinations and screenings were performed to detect PTM. We investigated the detail of two distinctive cancer groups: screening-detected cancers and symptom-detected cancers. Seventy-seven PTM were identified during the follow-up period. The mean age at the initial PTM detection was 43.6 ± 12.8 years. The mean interval from transplantation to cancer diagnosis was 134.5 ± 11.3 months. Among the 77 patients, posttransplant lymphoproliferative disease (PTLD) was the most common cancer (19.5%, 15/77), followed by renal cell carcinoma (15.6%, 12/77). Of the cancer cases, 46.8% (36/77) were detected via screening. The most frequently screening-detected cancer was renal cell carcinoma of the native kidney and breast cancer (22.2%, 8/36). However, it was difficult to detect PTLD, urothelial carcinoma, and colorectal cancer via screening. Interestingly, Cox proportional regression analyses revealed nonscreened recipients to be a significant prognostic factor for PTM (P kidney transplant recipients. These findings support the provision of long-term appropriate screening for kidney transplant recipients. © 2015 The Authors. Cancer Medicine published by John Wiley & Sons Ltd.

  20. Person-centered methods configural frequency analysis (CFA) and other methods for the analysis of contingency tables

    CERN Document Server

    Stemmler, Mark

    2014-01-01

    This book takes an easy-to-understand look at the statistical approach called the person-centered method. Instead of analyzing means, variances and covariances of scale scores as in the common variable-centered approach, the person-centered approach analyzes persons or objects grouped according to their characteristic patterns or configurations in contingency tables. The main focus of the book will be on Configural Frequency Analysis (CFA; Lienert and Krauth, 1975) which is a statistical method that looks for over and under-frequented cells or patterns. Over frequented means that the observations in this cell or configuration are observed more often than expected, under-frequented means that this cell or configuration is observed less often than expected. In CFA a pattern or configuration that contains more observed cases than expected is called a type; similarly, a pattern or configuration that is less observed than expected are called an antitype. CFA is similar to log-linear modeling. In log-linear modelin...

  1. Contingent Commitments: Bringing Part-Time Faculty into Focus. Methodology Supplement

    Science.gov (United States)

    Center for Community College Student Engagement, 2014

    2014-01-01

    Center reporting prior to 2013 focused primarily on descriptive statistics (frequencies and means) of student and faculty behaviors. The goal of the analyses reported here and in "Contingent Commitments: Bringing Part-Time Faculty into Focus" is to understand the engagement of part-time or contingent faculty in various activities that…

  2. Cost analysis of living donor kidney transplantation in China: a single-center experience.

    Science.gov (United States)

    Zhao, Wenyu; Zhang, Lei; Han, Shu; Zhu, Youhua; Wang, Liming; Zhou, Meisheng; Zeng, Li

    2012-01-01

    Kidney transplantation is the most cost-effective option for the treatment of end-stage renal disease, but the financial aspects of kidney transplantation have not yet been fully investigated. The purpose of this study was to determine the hospital cost of living donor kidney transplantation in China and to identify factors associated with the high cost. Demographic and clinical data of 103 consecutive patients who underwent living donor kidney transplantation from January 2007 to January 2011 at our center were reviewed, and detailed hospital cost of initial admission for kidney transplantation was analyzed. A stepwise multiple regression analysis was computed to determine predictors affecting the total hospital cost. The median total hospital cost was US $10,531, of which 69.2% was for medications, 13.2% for surgical procedures, 11.4% for para clinics, 3.7% for accommodations, 0.5% for nursing care, and 2.0% for other miscellaneous medical services. A multivariate stepwise logistic regression model for overall cost of transplantation revealed that the length of hospital stay, induction therapy, steroid-resistant rejection, maintenance therapy, infection status and body weight were independent predictors affecting the total hospitalization cost. Although the cost of living donor kidney transplantation in China is much lower than that in developed countries, it is a heavy burden for both the government and the patients. As medications formed the greater proportion of the total hospitalization cost, efforts to reduce the cost of drugs should be addressed.

  3. Career intentions of female surgeons in German liver transplant centers considering family and lifestyle priorities.

    Science.gov (United States)

    Radunz, Sonia; Hoyer, Dieter P; Kaiser, Gernot M; Paul, Andreas; Schulze, Maren

    2017-02-01

    Women represent up to 60 % of students entering the medical profession in many countries in the world. However, the proportion of women to men is not accordingly balanced among surgical residents and especially in leadership positions in surgery. Therefore, we investigated the career goals as well as family and lifestyle priorities of female surgeons in German liver transplant centers. A standardized questionnaire was developed using the web-based survey tool SurveyMonkey®. Questionnaires were distributed electronically to 180 female surgeons in 24 German liver transplant centers. A total of 81 completed questionnaires were analyzed. Female surgeons in German liver transplant centers are eager to assume leadership positions and do not wish to follow traditional role models. After finishing training, most female surgeons plan to continue working at a university hospital. About 80 % of the respondents intend to continue working full time and wish to combine career and family. This is the first survey on career intentions of female surgeons in Germany. In the face of gender changes in the medical profession, we were able to demonstrate that female surgeons are willing to fill leadership positions. Individual and institutional creative modifications are necessary if the advancement of women in surgery is to be promoted.

  4. Pre-liver transplant psychosocial evaluation predicts post-transplantation outcomes.

    Science.gov (United States)

    Benson, Ariel A; Rowe, Mina; Eid, Ahmad; Bluth, Keren; Merhav, Hadar; Khalaileh, Abed; Safadi, Rifaat

    2018-08-01

    Psychosocial factors greatly impact the course of patients throughout the liver transplantation process. A retrospective chart review was performed of patients who underwent liver transplantation at Hadassah-Hebrew University Medical Center between 2002 and 2012. A composite psychosocial score was computed based on the patient's pre-transplant evaluation. Patients were divided into two groups based on compliance, support and insight: Optimal psychosocial score and Non-optimal psychosocial score. Post-liver transplantation survival and complication rates were evaluated. Out of 100 patients who underwent liver transplantation at the Hadassah-Hebrew University Medical Center between 2002 and 2012, 93% had a complete pre-liver transplant psychosocial evaluation in the medical record performed by professional psychologists and social workers. Post-liver transplantation survival was significantly higher in the Optimal group (85%) as compared to the Non-optimal group (56%, p = .002). Post-liver transplantation rate of renal failure was significantly lower in the Optimal group. No significant differences were observed between the groups in other post-transplant complications. A patient's psychosocial status may impact outcomes following transplantation as inferior psychosocial grades were associated with lower overall survival and increased rates of complications. Pre-liver transplant psychosocial evaluations are an important tool to help predict survival following transplantation.

  5. Resource Management and Contingencies in Aerospace Concurrent Engineering

    Science.gov (United States)

    Karpati, Gabe; Hyde, Tupper; Peabody, Hume; Garrison, Matthew

    2012-01-01

    significant concern in designing complex systems implementing new technologies is that while knowledge about the system is acquired incrementally, substantial financial commitments, even make-or-break decisions, must be made upfront, essentially in the unknown. One practice that helps in dealing with this dichotomy is the smart embedding of contingencies and margins in the design to serve as buffers against surprises. This issue presents itself in full force in the aerospace industry, where unprecedented systems are formulated and committed to as a matter of routine. As more and more aerospace mission concepts are generated by concurrent design laboratories, it is imperative that such laboratories apply well thought-out contingency and margin structures to their designs. The first part of this publication provides an overview of resource management techniques and standards used in the aerospace industry. That is followed by a thought provoking treatise on margin policies. The expose presents the actual flight telemetry data recorded by the thermal discipline during several recent NASA Goddard Space Flight Center missions. The margins actually achieved in flight are compared against pre-flight predictions, and the appropriateness and the ramifications of having designed with rigid margins to bounding stacked worst case conditions are assessed. The second half of the paper examines the particular issues associated with the application of contingencies and margins in the concurrent engineering environment. In closure, a discipline-by-discipline disclosure of the contingency and margin policies in use at the Integrated Design Center at NASA s Goddard Space Flight Center is made.

  6. History of Lung Transplantation.

    Science.gov (United States)

    Dabak, Gül; Şenbaklavacı, Ömer

    2016-04-01

    History of lung transplantation in the world can be traced back to the early years of the 20 th century when experimental vascular anastomotic techniques were developed by Carrel and Guthrie, followed by transplantation of thoracic organs on animal models by Demikhov and finally it was James Hardy who did the first lung transplantation attempt on human. But it was not until the discovery of cyclosporine and development of better surgical techniques that success could be achieved in that field by the Toronto Lung Transplant Group led by Joel Cooper. Up to the present day, over 51.000 lung transplants were performed in the world at different centers. The start of lung transplantation in Turkey has been delayed for various reasons. From 1998 on, there were several attempts but the first successful lung transplant was performed at Sureyyapasa Hospital in 2009. Today there are four lung transplant centers in Turkey; two in Istanbul, one in Ankara and another one in Izmir. Three lung transplant centers from Istanbul which belong to private sector have newly applied for licence from the Ministry of Health.

  7. Prevalence and Causes of Proteinuria in Kidney Transplant Recipients: Data from a Single Center

    Directory of Open Access Journals (Sweden)

    Ersan Sibel

    2016-06-01

    Full Text Available Introduction. Proteinuria after renal transplantation increases the risk of graft failure and mortality. The aim of the study was to determine the prevalence and causes of proteinuria in kidney transplant recipients. Methods. All kidney transplant recipients followed up in our clinic were included in the study. As a center protocol 24-hour urine collections were used to quantify protein excretion with 3-month intervals posttransplantation during the first year, and yearly thereafter. The etiology of chronic kidney disease and demographic characteristics of the study group were obtained from outpatient records. Data regarding the immunosuppressive regimens used, 24-hour proteinuria levels and creatinine clearences, new-onset hypertension, new-onset diabetes mellitus, rejection episodes, infections like cytomegalovirus (CMV and polyoma (BK, and biopsy findings were noted. Results. A total of 260 kidney transplant recipients (97 females, mean age 42.3±12.3 years were evaluated. Median follow-up period was 36 months; 137 of all transplantations were from living donors. Mean age of donors was 42.7±15 years and 133 were female. Proteinuria with protein excretion ≥300 mg/d was present in 35.4% of patients. The most common cause of biopsy-proven proteinuria was transplant-specific conditions (acute rejection, and borderline changes. Conclusion. The prevalence of proteinuria was 35.4%. The transplant-specific diagnoses were the most likely causes. Even in nonnephrotic ranges it was associated with decreased graft survival.

  8. Infectious complications as the leading cause of death after kidney transplantation: analysis of more than 10,000 transplants from a single center.

    Science.gov (United States)

    de Castro Rodrigues Ferreira, Flávio; Cristelli, Marina Pontello; Paula, Mayara Ivani; Proença, Henrique; Felipe, Claudia Rosso; Tedesco-Silva, Helio; Medina-Pestana, José Osmar

    2017-08-01

    To identify specific causes of graft failure in a large sample of kidney transplant patients from a middle-income, developing country. Retrospective cohort study analyzing all consecutive single kidney transplants (KTs) performed at a single center in Brazil between January 1st 1998 and December 31st 2013. The database closing date was December 31st 2014. Out of 10,400 KTs, there were 1191 (11.45%) deaths with a functioning graft, 40 cases (0.38%) of primary non-function (PNF) and 1417 cases (13.62%) of graft loss excluding death and PNF as the cause. Infectious complications (404 cases, 34% of all deaths) were the major cause of death. Most deaths due to infection occurred within the first year after transplantation (157 deaths, 38.86%). Immunologic mechanisms, comprising acute rejection and immune-mediated interstitial fibrosis/tubular atrophy (IF/TA), were responsible for 52% of all cases of graft failure not involving recipient death. Half of the losses by acute rejection occurred late after transplantation. Contrary to what is observed in developed countries, infectious complications are the main challenge with kidney transplantation in Brazil. Non-adherence to treatment also appears to contribute significantly to long-term kidney graft loss. Strategies for improvement should focus on better compliance and a greater safety profile of immunosuppressive treatment.

  9. Organ Transplants in Kazakhstan.

    Science.gov (United States)

    Baigenzhin, Abay; Doskaliyev, Zhaksylyk; Tuganbekova, Saltanat; Zharikov, Serik; Altynova, Sholpan; Gaipov, Abduzhappar

    2015-11-01

    The Republic of Kazakhstan is one of the fastest developing countries in the world and has a health care system that is unique in Central Asia. Its organ transplant services are also developing rapidly. We aimed to analyze and briefly report on the current status of organ transplant in the Republic of Kazakhstan. We analyzed organ transplant activities in that country for the period 2012 to 2014. All data were collected from the official database of the National Transplant Coordinating Center of the Republic of Kazakhstan. At the end of 2014, the number of transplant centers had increased to 10, three of which could perform multiorgan transplants; during the same period, the number of deceased-donor organ-donating hospitals increased up to 37. By 2013, the transplant activity rate for all centers had reached 9.22 per million population. During the previous 3 years (2012-2014), there was a 3-fold increase in the number of living donors and an 18-fold increase in the number of kidney transplants. Between 2012 and 2014, the number of living-donor liver transplants increased from 17 to 25, and the number of deceased-donor transplants increased from 3 to 7. During the last 3 years (2012-2014), the number of heart transplants increased to 7 cases. During the last 3 years (2012-2014), Kazakhstan achieved a significant improvement in the organization of its transplant services, and a noticeable upward trend in the system continues.

  10. Transplant tourism: a growing phenomenon.

    Science.gov (United States)

    Cohen, David J

    2009-03-01

    Medical tourism is increasing owing to high costs of care, lack of availability or long waits for procedures, and improvements in technology and standards of care in many countries. Transplant tourism is one example of medical tourism that has been attracting increasing attention because of concerns over poor treatment and outcomes of both donors and recipients. Most such cases involve vended kidneys obtained from vulnerable populations, and both donors and recipients receive inferior care by US standards. This commentary discusses a paper by Gill et al. that compared outcomes of 33 transplant tourists with those of patients transplanted at a US center. Fewer complications and better outcomes were seen in patients transplanted in the US center than among transplant tourists. Large transplant centers with long waiting times are increasingly likely to see patients return newly transplanted from overseas; such patients require urgent attention, with particular consideration to infectious complications.

  11. Too poor for transplant: finance and insurance issues in transplant ethics.

    Science.gov (United States)

    Laurentine, Kyle Alexander; Bramstedt, Katrina A

    2010-06-01

    Donor organs are a scarce gift. Additionally, transplantation is very expensive and the United States lacks universal health insurance for all citizens. These facts combine to make personal finance and insurance some of the criteria for wait listing at US transplant centers. Previous research has shown that the poor and the uninsured (as well as women and nonwhites) are less likely to receive a transplant. Living donor candidates are also limited by the US insurance system. To determine the effect of finance and insurance variables on access to transplant and living donation. A qualitative descriptive study of ethics consultation data contained in a research registry approved by the institutional review board at California Pacific Medical Center. This study analyzes research registry data from a large community hospital in Northern California that serves patients from California, Oregon, and Nevada. The registry data are derived from transplant ethics consultations occurring between January 1, 2007, and June 30, 2009. This study explores the restriction of access to transplantation and of participation in living donation. More than a quarter of all transplant ethics consultation reports described the restriction of transplant-related treatment for reasons rooted in finance or insurance. Individuals on the recipient side and on the donor side were hindered with regard to access. Insurance status and personal ability to pay significantly affect access to transplantation in the United States, and this theme is a frequent feature of ethics consultations at California Pacific Medical Center.

  12. Contingency Management with Human Autonomy Teaming

    Science.gov (United States)

    Shively, Robert J.; Lachter, Joel B.

    2018-01-01

    Automation is playing an increasingly important role in many operations. It is often cheaper faster and more precise than human operators. However, automation is not perfect. There are many situations in which a human operator must step in. We refer to these instances as contingencies and the act of stepping in contingency management. Here we propose coupling Human Autonomy Teaming (HAT) with contingency management. We describe two aspects to HAT, bi-directional communication, and working agreements (or plays). Bi-directional communication like Crew Resource Management in traditional aviation, allows all parties to contribute to a decision. Working agreements specify roles and responsibilities. Importantly working agreements allow for the possibility of roles and responsibilities changing depending on environmental factors (e.g., situations the automation was not designed for, workload, risk, or trust). This allows for the automation to "automatically" become more autonomous as it becomes more trusted and/or it is updated to deal with a more complete set of possible situations. We present a concrete example using a prototype contingency management station one might find in a future airline operations center. Automation proposes reroutes for aircraft that encounter bad weather or are forced to divert for environmental or systems reasons. If specific conditions are met, these recommendations may be autonomously datalinked to the affected aircraft.

  13. Hematopoietic Stem Cell Transplantation in India-2017 Annual Update.

    Science.gov (United States)

    Naithani, Rahul

    2018-01-01

    There has been a steady rise in number of transplant centers in India over last few years. This year many papers related to bone marrow transplants were presented in annual conference of Indian society of Hematology and Transfusion Medicine. All oral and poster presentations which were published were reviewed. There were many publications on autologous transplant, allogeneic transplant and lab aspects of transplant. Centers shared their data on autologous transplants in newly set-up units with resource constraints with good outcomes. Encouraging data from across India is likely to boost more centers to set up transplant centers.

  14. Temporal contingency.

    Science.gov (United States)

    Gallistel, C R; Craig, Andrew R; Shahan, Timothy A

    2014-01-01

    Contingency, and more particularly temporal contingency, has often figured in thinking about the nature of learning. However, it has never been formally defined in such a way as to make it a measure that can be applied to most animal learning protocols. We use elementary information theory to define contingency in such a way as to make it a measurable property of almost any conditioning protocol. We discuss how making it a measurable construct enables the exploration of the role of different contingencies in the acquisition and performance of classically and operantly conditioned behavior. Copyright © 2013 Elsevier B.V. All rights reserved.

  15. Temporal contingency

    Science.gov (United States)

    Gallistel, C.R.; Craig, Andrew R.; Shahan, Timothy A.

    2015-01-01

    Contingency, and more particularly temporal contingency, has often figured in thinking about the nature of learning. However, it has never been formally defined in such a way as to make it a measure that can be applied to most animal learning protocols. We use elementary information theory to define contingency in such a way as to make it a measurable property of almost any conditioning protocol. We discuss how making it a measurable construct enables the exploration of the role of different contingencies in the acquisition and performance of classically and operantly conditioned behavior. PMID:23994260

  16. Barriers to preemptive renal transplantation: a single center questionnaire study.

    Science.gov (United States)

    Knight, Richard J; Teeter, Larry D; Graviss, Edward A; Patel, Samir J; DeVos, Jennifer M; Moore, Linda W; Gaber, A Osama

    2015-03-01

    Preemptive transplantation results in excellent patient and graft survival yet most transplant candidates are referred for transplantation after initiation of dialysis. The goal of this study was to determine barriers to preemptive renal transplantation. A nonvalidated questionnaire was administered to prospective kidney transplant recipients to determine factors that hindered or favored referral for transplantation before the initiation of dialysis. One hundred ninety-seven subjects referred for a primary renal transplant completed the questionnaire. Ninety-one subjects (46%) had been informed of preemptive transplantation before referral, and 80 (41%) were predialysis at the time of evaluation. The median time from diagnosis of renal disease to referral was 60 months (range, 2-444 months). In bivariate analysis, among other factors, knowledge of preemptive transplantation was highly associated (odds ratio=94.69) with referral before initiation of dialysis. Given the strong association between knowledge of preemptive transplantation and predialysis referral, this variable was not included in the multivariate analysis. Using multivariate logistic regression analysis, white recipient race, referral by a transplant nephrologist, recipient employment, and the diagnosis of polycystic kidney disease were significantly associated with presentation to the pretransplant clinic before initiation of dialysis. The principle barrier to renal transplantation referral before dialysis was patient education regarding the option of preemptive transplantation. Factors significantly associated with referral before dialysis were the diagnosis of polycystic kidney disease, white recipient race, referral by a transplant nephrologist, and employed status. Greater effort should be applied to patient education regarding preemptive transplantation early after the diagnosis of end-stage renal disease.

  17. Heart transplant outcomes in recipients of Centers for Disease Control (CDC) high risk donors.

    Science.gov (United States)

    Tsiouris, Athanasios; Wilson, Lynn; Sekar, Rajesh B; Mangi, Abeel A; Yun, James J

    2016-12-01

    A lack of donor hearts remains a major limitation of heart transplantation. Hearts from Centers for Disease Control (CDC) high-risk donors can be utilized with specific recipient consent. However, outcomes of heart transplantation with CDC high-risk donors are not well known. We sought to define outcomes, including posttransplant hepatitis and human immunodeficiency virus (HIV) status, in recipients of CDC high-risk donor hearts at our institution. All heart transplant recipients from August 2010 to December 2014 (n = 74) were reviewed. Comparison of 1) CDC high-risk donor (HRD) versus 2) standard-risk donor (SRD) groups were performed using chi-squared tests for nominal data and Wilcoxon two-sample tests for continuous variables. Survival was estimated with Kaplan-Meier curves. Of 74 heart transplant recipients reviewed, 66 (89%) received a SRD heart and eight (11%) received a CDC HRD heart. We found no significant differences in recipient age, sex, waiting list 1A status, pretransplant left ventricular assist device (LVAD) support, cytomegalovirus (CMV) status, and graft ischemia times (p = NS) between the HRD and SRD groups. All of the eight HRD were seronegative at the time of transplant. Postoperatively, there was no significant difference in rejection rates at six and 12 months posttransplant. Importantly, no HRD recipients acquired hepatitis or HIV. Survival in HRD versus SRD recipients was not significantly different by Kaplan-Meier analysis (log rank p = 0.644) at five years posttransplant. Heart transplants that were seronegative at the time of transplant had similar posttransplant graft function, rejection rates, and five-year posttransplant survival versus recipients of SRD hearts. At our institution, no cases of hepatitis or HIV occurred in HRD recipients in early follow-up. © 2016 Wiley Periodicals, Inc.

  18. Extracorporeal life support as a bridge to lung transplantation-experience of a high-volume transplant center.

    Science.gov (United States)

    Hoetzenecker, Konrad; Donahoe, Laura; Yeung, Jonathan C; Azad, Sassan; Fan, Eddy; Ferguson, Niall D; Del Sorbo, Lorenzo; de Perrot, Marc; Pierre, Andrew; Yasufuku, Kazuhiro; Singer, Lianne; Waddell, Thomas K; Keshavjee, Shaf; Cypel, Marcelo

    2018-03-01

    Extracorporeal life support (ECLS) is increasingly used to bridge deteriorating patients awaiting lung transplantation (LTx), however, few systematic descriptions of this practice exist. We therefore aimed to review our institutional experience over the past 10 years. In this case series, we included all adults who received ECLS with the intent to bridge to LTx. Data were retrieved from patient charts and our institutional ECLS and transplant databases. Between January 2006 and September 2016, 1111 LTx were performed in our institution. ECLS was used in 71 adults with the intention to bridge to LTx; of these, 11 (16%) were bridged to retransplantation. The median duration of ECLS before LTx was 10 days (range, 0-95). We used a single dual-lumen venous cannula in 23 patients (32%). Nine of 13 patients (69%) with pulmonary hypertension were bridged by central pulmonary artery to left atrium Novalung. Twenty-five patients (35%) were extubated while on ECLS and 26 patients (37%) were mobilized. Sixty-three patients (89%) survived to LTx. Survival by intention to treat was 66% (1 year), 58% (3 years) and 48% (5 years). Survival was significantly shorter in patients undergoing ECLS bridge to retransplantation compared with first LTx (median survival, 15 months (95% CI, 0-31) versus 60 months (95% CI, 37-83); P = .041). In our center experience, ECLS bridge to first lung transplant leads to good short-term and long-term outcomes in carefully selected patients. In contrast, our data suggest that ECLS as a bridge to retransplantation should be used with caution. Copyright © 2017 The American Association for Thoracic Surgery. All rights reserved.

  19. Pediatric Liver Transplantation: Our Experiences.

    Science.gov (United States)

    Basturk, Ahmet; Yılmaz, Aygen; Sayar, Ersin; Dinçhan, Ayhan; Aliosmanoğlu, İbrahim; Erbiş, Halil; Aydınlı, Bülent; Artan, Reha

    2016-10-01

    The aim of our study was to evaluate our liver transplant pediatric patients and to report our experience in the complications and the long-term follow-up results. Patients between the ages of 0 and 18 years, who had liver transplantation in the organ transplantation center of our university hospital between 1997 and 2016, were included in the study. The age, sex, indications for the liver transplantation, complications after the transplantation, and long-term follow-up findings were retrospectively evaluated. The obtained results were analyzed with statistical methods. In our organ transplantation center, 62 pediatric liver transplantations were carried out since 1997. The mean age of our patients was 7.3 years (6.5 months-17 years). The 4 most common reasons for liver transplantation were: Wilson's disease (n=10; 16.3%), biliary atresia (n=9; 14.5%), progressive familial intrahepatic cholestasis (n=8; 12.9%), and cryptogenic cirrhosis (n=7; 11.3%). The mortality rate after transplantation was 19.6% (12 of the total 62 patients). The observed acute and chronic rejection rates were 34% and 4.9%, respectively. Thrombosis (9.6%) was observed in the hepatic artery (4.8%) and portal vein (4.8%). Bile leakage and biliary stricture rates were 31% and 11%, respectively. 1-year and 5-year survival rates of our patients were 87% and 84%, respectively. The morbidity and mortality rates in our organ transplantation center, regarding pediatric liver transplantations, are consistent with the literature.

  20. Pediatric Renal Transplantation in Oman: A Single-center Experience

    Directory of Open Access Journals (Sweden)

    Mohamed S. Al Riyami

    2018-01-01

    Full Text Available Objectives: This study sought to report 22 years experience in pediatric kidney transplantation in Oman. Methods: Electronic charts of all Omani children below 13 years of age who received a kidney transplant from January 1994 to December 2015 were reviewed. Data collected included patient demographics, etiology of end-stage kidney disease, modality and duration of dialysis, donor type, complication of kidney transplantation (including surgical complications, infections, graft rejection graft and patient survival, and duration of follow-up. Results: During the study period transplantation from 27 living related donors (LRDs, 42 living unrelated donors (LURDs, also referred to as commercial transplant, and one deceased donor were performed. The median age at transplantation was nine years for both groups. The most common primary diagnosis was congenital anomalies of the kidney and urinary tract in 32.8% of patients followed by familial nephrotic syndrome in 20.0% and polycystic kidney disease in 18.5%. Almost half the patients were on hemodialysis before transplantation, 35.7% were on peritoneal dialysis, and 14.2% received preemptive renal transplantation. Children who received LURD kidneys had high surgical complications (42.8% compared to the LRDs group (17.8%. Five patients from LURDs group had early graft nephrectomy and four patients developed non-graft function or delayed graft function. In addition, patients in the LURDs group had a higher incidence of hypertension and acute rejection. Graft and patient survival were both better in the LRDs than the LURDs group. Conclusions: Although our pediatric kidney transplant program is a young program it has had successful patient outcomes comparable to international programs. Our study provides evidence that in addition to legal and ethical issues with commercial transplant, it also carries significantly higher morbidity and reduced graft and patient survival.

  1. Impact of Pretransplantation Indices in Hematopoietic Stem Cell Transplantation: Knowledge of Center-Specific Outcome Data Is Pivotal before Making Index-Based Decisions.

    Science.gov (United States)

    Törlén, Johan; Remberger, Mats; Le Blanc, Katarina; Ljungman, Per; Mattsson, Jonas

    2017-04-01

    Outcome after allogeneic hematopoietic stem cell transplantation is influenced by patient comorbidity, disease type, and status before treatment. We performed a retrospective study involving 521 consecutive adult hematopoietic stem cell transplantation patients who underwent transplantation for hematological malignancy at our center from 2000 to 2012 to compare the predictive value of the hematopoietic cell transplantation-specific comorbidity index (HCT-CI) and the disease risk index (DRI) for overall survival and transplantation-related mortality. Patients in the highest HCT-CI risk group (HCT-CI score ≥3) had a lower 5-year overall survival rate (50%) than the low-risk group (63%; P 6 [n = 9]). Five-year overall survival in the highest DRI risk group was significantly poorer (44%) than in the low-risk group (63%; P indices failed to predict differences in transplantation-related mortality (HCT-CI, P = .54; DRI, P = .17). We conclude that HCT-CI and DRI were predictive of overall survival in our patient population. Even so, our data show that different patient groups may have different outcomes despite sharing the same index risk group and that indices should, therefore, be evaluated according to local data before clinical implementation at the single-center level. Copyright © 2017 The American Society for Blood and Marrow Transplantation. Published by Elsevier Inc. All rights reserved.

  2. Analysis of hemodialysis patients’ thoughts about kidney transplantation and the national organ transplant system in terms of organ transplantation services management

    Directory of Open Access Journals (Sweden)

    Yasin Uzuntarla

    2017-03-01

    Results: It was determined that the hemodialysis patients responding to the survey were in the 20-95 age group with an average age of 58,64±15,64 years. 87,9% of the patients reported that they had been briefed about kidney transplants, 32,2% of those had been briefed said that the information had been delivered by the dialysis physician, 77,7% stated that they wanted a kidney transplant from a cadaver, 49,5% did not want a kidney transplant from a live donor and 35,5% indicated that the national organ transplant system operated adequately. Furthermore, it was noted that 50,9% of the responders were registered on the waiting lists of kidney transplant centers. Conclusions: It was concluded that it is necessary to provide sufficient information to hemodialysis patients about kidney transplants and the national organ transplant system to steer them to transplant centers. It is anticipated that the results of this study will assist officers of the Ministry of Health, politicians involved in health issues, decision makers and health professionals. [Arch Clin Exp Surg 2017; 6(1.000: 33-37

  3. Transplante de intestino delgado Small intestine transplantation

    Directory of Open Access Journals (Sweden)

    Flávio Henrique Ferreira Galvão

    2003-06-01

    to treat special cases of intestinal failure. AIM: This review highlights recent developments in the area of small bowel transplantation. MATERIAL AND METHODS: Over 600 reports on clinical and experimental small bowel transplantation were reviewed. Aspects concerning research development, different immunosuppressive strategies, patient and graft monitoring, and improvements in surgical techniques are discussed. RESULTS: About 700 small bowel transplantation were performed in 55 transplant centers, 44% intestine-liver, 41% isolated intestinal graft and 15% multivisceral transplantation. Rejection and infection are the main limitation of this procedure. Actual 5 years post transplantation graft survival of the total international experience is 46% for isolated intestinal graft, 43% for combined intestine-liver and nearly 30% for multivisceral transplantation. Higher graft and patient survival are seen at the more experienced centers. In a series of 165 intestinal transplantation at University of Pittsburgh, PA, USA, actuarial patient survival was reported to be over 75% at one year, 54% at 5 years and 42% at 10 years. Over 90% patients from Pittsburgh program resume an unrestricted oral diet. CONCLUSION: Small bowel transplantation has advanced from an experimental strategy to a feasible alternative for patients with permanent intestinal failure. Further refinements in graft acceptance, immunosuppressive regiments, infection management and prophylaxis, surgical techniques as well as appropriated patient referral and selection are crucial to improve outcomes.

  4. Decision Making in Liver Transplant Selection Committees

    Science.gov (United States)

    Volk, Michael L; Biggins, Scott W; Huang, Mary Ann; Argo, Curtis K; Fontana, Robert J; Anspach, Renee R

    2011-01-01

    Background In order to receive a liver transplant, patients must first be placed on the waiting list – a decision made in most transplant centers by a multidisciplinary committee. The function of these committees has never been studied. Objectives To describe decision making in liver transplant committees and identify opportunities for process improvement. Design Observational multi-center Setting We observed 63 meetings and interviewed 50 committee members at 4 liver transplant centers. Study Subjects Transplant committee members. Measurements Recorded transcripts and field notes were analyzed using standard qualitative sociological methods. Results While the structure of meetings varied by center, the process was uniform and involved reviewing possible reasons for patient exclusion using primarily inductive reasoning. Stated justifications for excluding patients were a) too well, b) non-hepatic comorbidities or advanced age, c) too sick in the setting of advanced liver disease, d) substance abuse, or e) other psychosocial barriers. Dominant themes identified included members’ angst over deciding who lives and dies, a high correlation between psychosocial barriers to transplant and patients’ socioeconomic status, and the influence of external forces on decision making. Consistently identified barriers to effective group decision making were: 1) unwritten center policies, and 2) confusion regarding advocacy versus stewardship roles. Limitations The use of qualitative methods provides broad understanding but limits specific inferences. These four centers may not be reflective of every transplant center nationwide. Conclusion The difficult decisions made by these committees are reasonably consistent and always well-intentioned, but might be improved by more explicit written policies and clarifying roles. This process may help inform resource allocation in other areas of medicine. Primary funding source The Greenwall Foundation. PMID:22007044

  5. Efficacy and safety of low-dose valganciclovir for prevention of cytomegalovirus disease in renal transplant recipients: a single-center, retrospective analysis.

    Science.gov (United States)

    Gabardi, Steven; Magee, Colm C; Baroletti, Steven A; Powelson, John A; Cina, Jennifer L; Chandraker, Anil K

    2004-10-01

    To evaluate the safety and efficacy of valganciclovir 450 mg/day for 6 months for cytomegalovirus (CMV) prophylaxis in renal transplant recipients. Single-center, retrospective analysis. Urban, academic medical center. Fifty-eight patients who received de novo renal transplants from August 1, 2001-November 21, 2002. Valganciclovir 450 mg/day was administered to all renal transplant recipients at risk for CMV disease. Therapy was begun postoperatively and was dose adjusted to renal function. Data collected from renal transplant recipients were demographics, immunosuppressive and antiviral drug therapy, and occurrence of CMV disease, acute rejection, allograft loss, and hematologic adverse events. Donor (D)/recipient (R) CMV serostatus was 37.9% D+/R+, 29.3% D-/R+, 17.3% D+/R-, and 15.5% D-/R-. Antithymocyte globulin (ATG) was administered to 62.1% of patients. Most of the transplant recipients received triple immunosuppression as maintenance therapy. Median follow-up was 20 months. The frequency of CMV disease was 1.7% within 6 months after transplantation and 5.2% at any point after transplantation. All patients who developed CMV disease were D+/R- and had received ATG. Leukopenia and thrombocytopenia associated with valganciclovir were seen in 28% and 24% of patients, respectively. One patient developed acute cellular rejection. No graft losses or deaths occurred. Early discontinuation of valganciclovir occurred in 20% of patients secondary to severe, persistent leukopenia, thrombocytopenia, and/or diarrhea. None of these patients developed CMV disease. A high rate of CMV disease was noted among the D+/R- population. Administration of ATG as an induction agent also increased the frequency of CMV disease. Despite the low dosage of valganciclovir, hematologic adverse events were common. However, valganciclovir, administered at 450 mg/day for 6 months, was effective and relatively safe for prophylaxis of CMV disease in renal transplant recipients.

  6. The concept of a composite perioperative quality index in kidney transplantation.

    Science.gov (United States)

    Taber, David J; McGillicuddy, John W; Bratton, Charles F; Lin, Angello; Chavin, Kenneth D; Baliga, Prabhakar K

    2014-04-01

    Public reporting of patient and graft outcomes in a national registry and close Centers for Medicare and Medicaid Services oversight has resulted in transplantation being a highly regulated surgical discipline. Despite this, transplantation surgery lacks comprehensive tracking and reporting of perioperative quality measures. Therefore, the aim of this study was to determine the association between a kidney transplantation centers' perioperative quality benchmarking and graft and patient outcomes. This was an analysis of 2011 aggregate data compiled from 2 national datasets that track outcomes from member hospitals and transplantation centers. The transplantation centers included in this study were composed of accredited US kidney transplantation centers that report data through the national registry and are associate members of the University HealthSystem Consortium. A total of 16,811 kidney transplantations were performed at 236 centers in the United States in 2011, of which 10,241 (61%) from 93 centers were included in the analysis. Of the 6 perioperative quality indicators, 3 benchmarked metrics were significantly associated with a kidney transplantation center's underperformance: mean ICU length of stay (C-statistic 0.731; p = 0.002), 30-day readmissions (C-statistic 0.697; p = 0.012) and in-hospital complications (C-statistic 0.785; p = 0.001). The composite quality index strongly correlated with inadequate center performance (C-statistic 0.854; p < 0.001, R(2) = 0.349). The centers in the lowest quartile of the quality index performed 2,400 kidney transplantations in 2011, which led to 2,640 more hospital days, 4,560 more ICU days, 120 more postoperative complications, and 144 more patients with 30-day readmissions, when compared with centers in the 3 higher-quality quartiles. An objective index of a transplantation center's quality of perioperative care is significantly associated with patient and graft survival. Copyright © 2014 American College of

  7. Access to Grafts in a Liver Transplant Center: Does It Rely on the Severity of the Waiting List Population?

    Science.gov (United States)

    Daciuk, N I; Quiñonez, E G; Poupard, M; Vergara Sandoval, R M; Mattera, F J

    2018-03-01

    The number of transplants performed relies, partially, on recipients' variables on the waiting list. The goal of this study was to compare recipients from a high-volume liver center in Argentina with the rest of the country. This study was a retrospective analysis of liver transplant recipients nationally between January 2013 and April 2017. It involved extracting data from the open database CRESI-SINTRA (the Argentinian database of the National Procurement Organization, an equivalent to the United Network for Organ Sharing); expressing results by percentages, medians, and interquartile ranges (IQRs); and comparing the national population with the population transplanted at Hospital El Cruce (HEC). The Mann-Whitney U test was used for analysis. Nationally, 1434 liver transplants were performed. A total of 177 (12.34%) were emergency status; 811 (56.6%) were by the Model for End-Stage Liver Disease (MELD) (n = 759)/PELD (Pediatric End-Stage Liver Disease) (n = 52), with a median graft assignment position of 5 (IQR, 3-10) in 57.2 days (IQR, 11-217). Median MELD access was 29 points (IQR, 24-33). A total of 446 (31.1%) had MELD exceptions; 249 (55.8%) of these were due to Milan hepatocellular carcinoma. At the HEC, 167 liver transplantations were performed; 26 (15.6%) were emergency status and 97 (58.1%) by MELD (none PELD). Their median graft assignment position was 4 (IQR, 4-16) in 19.1 days (IQR, 4-90); median MELD access was 28 points (IQR, 24-31). Forty-five patients (26.9%) had MELD exceptions; 31 (68.9%) were due to hepatocellular carcinoma. Our center has a larger proportion of recipients transplanted by emergency status and MELD, similar MELD access, and less waiting list time, reflecting our wide policy of liver graft acceptance. Copyright © 2017 Elsevier Inc. All rights reserved.

  8. Transplant tourism: Outcomes of United States residents who undergo kidney transplantation overseas.

    Science.gov (United States)

    Canales, Muna T; Kasiske, Bertram L; Rosenberg, Mark E

    2006-12-27

    Although international commerce in kidney transplantation is a reality, little is known about U.S. residents who travel abroad for kidney transplantation. We retrospectively reviewed the clinical outcomes of patients who were evaluated at the University of Minnesota Medical Center or Hennepin County Medical Center, but then surreptitiously underwent kidney transplantation overseas. We identified 10 patients who underwent kidney transplantation outside the United States between September 16, 2002 and June 30, 2006 and then returned for care in our programs. Eight were transplanted in Pakistan (all Somali), one was transplanted in China (Chinese), and one was transplanted in Iran (Iranian). All but one had a living donor. Mean age was 36.8+/-12.5 years with median follow-up of 2.0 years (range 0.4-3.7). Three patients communicated their intent to travel abroad before transplantation. Induction immunosuppressive therapy (if any) was available in 3/10, and initial maintenance immunosuppression was known in 5/10. Complications were primarily infectious, with six potentially life-threatening infections in four patients. At last follow-up, mean serum creatinine was 1.13+/-0.34 mg/dL, acute rejection occurred in 2/10, 1/10 grafts failed due to acute rejection, and 9/10 patients were alive. Kidney function and graft survival were generally good after surreptitious overseas kidney transplantation. Major problems included incomplete perioperative information communicated to the posttransplant care facility and a high incidence of posttransplant infections. Longer follow-up and detailed cost analysis are needed to better understand the implications of the growing phenomenon of transplant tourism.

  9. Hanford Facility contingency plan

    International Nuclear Information System (INIS)

    Sutton, L.N.; Miskho, A.G.; Brunke, R.C.

    1993-10-01

    The Hanford Facility Contingency Plan, together with each TSD unit-specific contingency plan, meets the WAC 173-303 requirements for a contingency plan. This plan includes descriptions of responses to a nonradiological hazardous materials spill or release at Hanford Facility locations not covered by TSD unit-specific contingency plans or building emergency plans. This plan includes descriptions of responses for spills or releases as a result of transportation activities, movement of materials, packaging, and storage of hazardous materials

  10. Identifying Barriers to Preemptive Kidney Transplantation in a Living Donor Transplant Cohort

    Directory of Open Access Journals (Sweden)

    Ryan A. Helmick, MD

    2018-04-01

    Conclusions. Even among a patient population that is primarily white, educated, and has a spouse or first-degree relative donor, PreKTx rates remain concerningly low. Increased time between diagnosis or education and transplant are predictors of PreKTx. Greater emphasis on transplant education earlier in the stages of chronic kidney disease and community outreach from transplant centers may help to increase the rate of PreKTx.

  11. Allogeneic Stem Cell Transplantation in Congenital Hemoglobinopathies Using a Tailored Busulfan-Based Conditioning Regimen: Single-Center Experience.

    Science.gov (United States)

    Zaidman, Irina; Rowe, Jacob M; Khalil, Abdalla; Ben-Arush, Myriam; Elhasid, Ronit

    2016-06-01

    Hematopoietic stem cell transplantation (HSCT) is the only proven curative option for patients with hemoglobinopathies, both thalassemia and sickle cell anemia (SCA). A busulfan-based myeloablative conditioning regimen is the standard of care for HSCT in these patients, although increased treatment-related morbidity, including veno-occlusive disease (VOD), has been demonstrated. Thirty-eight pediatric patients, median age 8 years (range, 6 months to 22 years), suffering from hemoglobinopathy were treated at Rambam Medical Center in Haifa, Israel, between 1998 and 2011. Thirty-four patients had thalassemia major and 4 had SCA. The 38 patients underwent 40 HSCTs, 34 of which were first transplants and 6 second transplants. Most transplants (32/40) were from matched sibling donors. Sources of stem cells were peripheral blood in 30 transplants, bone marrow in 7 transplants, and cord blood in 3 transplants. All received different customized busulfan-based conditioning regimens tailored by pharmacokinetic analysis of busulfan levels. Primary engraftment occurred in 37 of 40 transplants. Neutrophil engraftment (>.5 × 10(9)/L) occurred at a median of 15.3 days post-transplantation (range, 10 to 45). Platelet transfusion independence (>20 × 10(9)/L) occurred at a median of 22.3 days (range, 11 to 60). The rate of 5-year overall survival for thalassemia patients after first transplantation was 90.5% ± 5.3%. The rate of 5-year thalassemia-free survival was 81.7% ± 6.8%. Cumulative incidence of acute graft-versus-host disease (GVHD) was 17.6%. Rate of grades III to IV GVHD was 8.8%. Cumulative incidence of chronic GVHD was 23.5%, with 11.8% incidence of extensive chronic GVHD. One patient developed VOD. Full donor chimerism occurred in 36.4% of patients with class 1 + 2 thalassemia, compared with 78.6% in class 3 thalassemia (P = .049). Overall survival above 90% in patients undergoing their first transplant was demonstrated using busulfan

  12. Depression, social support, and clinical outcomes following lung transplantation: a single-center cohort study.

    Science.gov (United States)

    Smith, Patrick J; Snyder, Laurie D; Palmer, Scott M; Hoffman, Benson M; Stonerock, Gregory L; Ingle, Krista K; Saulino, Caroline K; Blumenthal, James A

    2018-05-01

    Depressive symptoms are common among lung transplant candidates and have been associated with poorer clinical outcomes in some studies. Previous studies have been plagued by methodologic problems, including small sample sizes, few clinical events, and uncontrolled confounders, particularly perioperative complications. In addition, few studies have examined social support as a potential protective factor. We therefore examined the association between pretransplant depressive symptoms, social support, and mortality in a large sample of lung transplant recipients. As a secondary aim, we also examined the associations between psychosocial factors, perioperative outcomes [indexed by hospital length of stay (LOS)], and mortality. We hypothesized that depression would be associated with longer LOS and that the association between depression, social support, and mortality would be moderated by LOS. Participants included lung transplant recipients, transplanted at Duke University Medical Center from January 2009 to December 2014. Depressive symptoms were evaluated using the Beck Depression Inventory (BDI-II) and social support using the Perceived Social Support Scale (PSSS). Medical risk factors included forced vital capacity (FVC), partial pressure of carbon dioxide (PCO 2 ), donor age, acute rejection, and transplant type. Functional status was assessed using six-minute walk distance (6MWD). We also controlled for demographic factors, including age, gender, and native disease. Transplant hospitalization LOS was examined as a marker of perioperative clinical outcomes. Participants included 273 lung recipients (174 restrictive, 67 obstructive, 26 cystic fibrosis, and six "other"). Pretransplant depressive symptoms were common, with 56 participants (21%) exhibiting clinically elevated levels (BDI-II ≥ 14). Greater depressive symptoms were associated with longer LOS [adjusted b = 0.20 (2 days per 7-point higher BDI-II score), P social support (P social support were

  13. Fuzzy-set based contingency ranking

    International Nuclear Information System (INIS)

    Hsu, Y.Y.; Kuo, H.C.

    1992-01-01

    In this paper, a new approach based on fuzzy set theory is developed for contingency ranking of Taiwan power system. To examine whether a power system can remain in a secure and reliable operating state under contingency conditions, those contingency cases that will result in loss-of-load, loss-of generation, or islanding are first identified. Then 1P-1Q iteration of fast decoupled load flow is preformed to estimate post-contingent quantities (line flows, bus voltages) for other contingency cases. Based on system operators' past experience, each post-contingent quantity is assigned a degree of severity according to the potential damage that could be imposed on the power system by the quantity, should the contingency occurs. An approach based on fuzzy set theory is developed to deal with the imprecision of linguistic terms

  14. Suicidal hanging donors for lung transplantation: Is this chapter still closed? Midterm experience from a single center in United Kingdom.

    Science.gov (United States)

    Ananiadou, Olga; Schmack, Bastian; Zych, Bartlomiej; Sabashnikov, Anton; Garcia-Saez, Diana; Mohite, Prashant; Weymann, Alexander; Mansur, Ashham; Zeriouh, Mohamed; Marczin, Nandor; De Robertis, Fabio; Simon, Andre Rüdiger; Popov, Aron-Frederik

    2018-04-01

    In the context of limited donor pool in cardiothoracic transplantation, utilization of organs from high risk donors, such as suicidal hanging donors, while ensuring safety, is under consideration. We sought to evaluate the outcomes of lung transplantations (LTx) that use organs from this group.Between January 2011 and December 2015, 265 LTx were performed at our center. Twenty-two recipients received lungs from donors after suicidal hanging (group 1). The remaining 243 transplantations were used as a control (group 2). Analysis of recipient and donor characteristics as well as outcomes was performed.No statistically significant difference was found in the donor characteristics between analyzed groups, except for higher incidence of cardiac arrest, younger age and smoking history of hanging donors (P donor cause of death is not associated with poor mid-term survival or chronic lung allograft dysfunction following transplantation. These results encourage assessment of lungs from hanging donors, and their consideration for transplantation.

  15. Contingency planning: preparation of contingency plans

    DEFF Research Database (Denmark)

    Westergaard, J M

    2008-01-01

    . The risk of introducing disease pathogens into a country and the spread of the agent within a country depends on a number of factors including import controls, movement of animals and animal products and the biosecurity applied by livestock producers. An adequate contingency plan is an important instrument...... in the preparation for and the handling of an epidemic. The legislation of the European Union requires that all Member States draw up a contingency plan which specifies the national measures required to maintain a high level of awareness and preparedness and is to be implemented in the event of disease outbreak...

  16. Donor characteristics and hematopoietic stem cell transplantation outcome: experience of a single center in Southern Brazil

    Directory of Open Access Journals (Sweden)

    Alessandra Paz

    2018-04-01

    Full Text Available Background: Hematopoietic stem cell transplantation is a curative treatment for many patients with hematological disorders. Donor–recipient genetic disparity, especially involving the human leukocyte antigen system is a critical factor for transplant outcome. Objective: To evaluate retrospectively donor characteristics and correlations with the occurrence of acute and chronic graft-versus-host disease, disease-free survival and overall survival in a Brazilian population submitted to allogeneic hematopoietic stem cell transplantation between 1994 and 2012 in a single center. Results: Three hundred and forty-seven consecutive transplantations were included. Related transplants (81.2% were significantly more common than unrelated transplants (18.7%; donor and recipient median ages were 34 (range: 1–61 and 33 (range: 3–65 years respectively with donor HLAs being matched for 333 (95.9% patients. Donor gender, cytomegalovirus status and ABO incompatibility did not influence the five-year overall survival. In univariate analyses, overall survival was negatively influenced by the presence of acute graft-versus-host disease (33% vs. 47%, respectively; p-value = 0.04, unrelated transplant (41.5% vs. 50.9%, respectively; p-value = 0.045 and donors aged over 40 years (41% vs. 52%, respectively; p-value = 0.03. Older donors were associated with a higher rate of acute (52% vs. 65.8%; p-value = 0.03 and chronic graft-versus-host disease (60% vs. 43%, respectively; p-value = 0.015. In multivariate analyses, acute graft-versus-host disease [relative risk (RR: 1.8; 95% confidence interval (CI: 1.1–29; p-value = 0.008] and older donors (RR: 1.6; 95% CI 1.11–2.24; p-value = 0.013 were associated with higher transplant-related mortality. Conclusions: In transplant patients, to have a donor older than 40 years of age seems to significantly increase the incidence of acute and chronic graft-versus-host disease and transplant-related mortality

  17. Learning, awareness, and instruction: subjective contingency awareness does matter in the colour-word contingency learning paradigm.

    Science.gov (United States)

    Schmidt, James R; De Houwer, Jan

    2012-12-01

    In three experiments, each of a set colour-unrelated distracting words was presented most often in a particular target print colour (e.g., "month" most often in red). In Experiment 1, half of the participants were told the word-colour contingencies in advance (instructed) and half were not (control). The instructed group showed a larger learning effect. This instruction effect was fully explained by increases in subjective awareness with instruction. In Experiment 2, contingency instructions were again given, but no contingencies were actually present. Although many participants claimed to be aware of these (non-existent) contingencies, they did not produce an instructed contingency effect. In Experiment 3, half of the participants were given contingency instructions that did not correspond to the correct contingencies. Participants with these false instructions learned the actual contingencies worse than controls. Collectively, our results suggest that conscious contingency knowledge might play a moderating role in the strength of implicit learning. Copyright © 2012 Elsevier Inc. All rights reserved.

  18. Empowering Young Abused and Neglected Children through Contingency Play.

    Science.gov (United States)

    Gunsberg, Andrew

    1989-01-01

    Argues that contingency play as an intervention strategy can ameliorate abused and neglected children's alienation from adults, reduce stress, and develop positive modes of behavior. The argument is supported by a case study of a four-year-old girl in a day treatment center for abused and neglected children. (BB)

  19. Market Competition and Density in Liver Transplantation: Relationship to Volume and Outcomes.

    Science.gov (United States)

    Adler, Joel T; Yeh, Heidi; Markmann, James F; Nguyen, Louis L

    2015-08-01

    Liver transplantation centers are unevenly distributed within the Donor Service Areas (DSAs) of the United States. This study assessed how market competition and liver transplantation center density are associated with liver transplantation volume within individual DSAs. We conducted a retrospective cohort study of 53,156 adult liver transplants in 45 DSAs with 110 transplantation centers identified from the Scientific Registry of Transplant Recipients between 2003 and 2012. The following measures were derived annually for each DSA: market competition using the Herfindahl Hirschman Index, transplantation center density by the Average Nearest Neighbor method, liver quality by the Liver Donor Risk Index, and patient risk by the Model for End-Stage Liver Disease. A hierarchical mixed effects negative binomial regression model of the relationship between liver transplants and market factors was created annually. Patient and graft survival were investigated with a Cox proportional hazards model. Transplantation center density was associated with market competition (p market competition (IRR = 1.36; p = 0.02), increased listings (IRR = 1.14; p market variables were associated with increased mortality after transplantation. After controlling for demographic and market factors, a greater concentration of centers was associated with more liver transplants without impacting overall survival. These results warrant additional investigation into the relationship between geospatial factors and liver transplantation volume with consideration for the optimization of scarce resources. Copyright © 2015 American College of Surgeons. Published by Elsevier Inc. All rights reserved.

  20. Outcomes of kidney transplant tourism in children: a single center experience.

    Science.gov (United States)

    Majid, Abdul; Al Khalidi, Lina; Ahmed, Bushra Q; Opelz, Gerhard; Schaefer, Franz

    2010-01-01

    Transplant tourism is a necessity for children with end-stage renal disease living in regions without established local transplantation programs. The use of kidneys from living unrelated donors (LURDs) was common practice in Asia prior to the recent global condemnation of commercial organ transplantation. Objective information on the outcomes of pediatric transplant tourism is scarce. Here, we report the Dubai experience with 45 renal allograft transplantations performed outside the United Arab Emirates (UAE) between 1993 and 2009. Transplantation from 33 LURDs, ten living related donors (LRDs) and two deceased donors was performed in 14 different countries. The mean number of human leukocyte antigen (HLA) A/B/DR allele matches was 1.4 +/- 0.8 in the LURD graft recipients and 3.9 +/- 0.7 in the LRD recipients. Outcomes were compared with those of a matched group of 3,150 pediatric LRD transplantations from the Collaborative Transplant Study (CTS). Ten-year patient survival was 100% in the LRD patients, 91.2% in the LURD patients, and 92% in the CTS patients. The three deaths in the LURD group occurred within the first 4 months after transplantation and were related to acute rejection. One-year and 10-year graft survival was 100% in the LRD group and 94.8% and 66.7% in the CTS-LRD groups, vs 87.8% and 43.4% in the LURD group. Major viral infections [Epstein-Barr virus (EBV), cytomegalovirus (CMV), varicella zoster (VZV)] were four-times more common in patients that had received LURD grafts than in those that had received LRD grafts. In conclusion, whereas LRD kidney transplantation performed abroad yields excellent long-term results, transplantation of LURD kidneys is fraught with a high complication rate affecting graft and even early patient survival.

  1. Implications of Contingency Planning Support for Weather and Icing Information

    Science.gov (United States)

    Vigeant-Langlois, Laurence; Hansman, R. John, Jr.

    2003-01-01

    A human-centered systems analysis was applied to the adverse aircraft weather encounter problem in order to identify desirable functions of weather and icing information. The importance of contingency planning was identified as emerging from a system safety design methodology as well as from results of other aviation decision-making studies. The relationship between contingency planning support and information on regions clear of adverse weather was investigated in a scenario- based analysis. A rapid prototype example of the key elements in the depiction of icing conditions was developed in a case study, and the implications for the components of the icing information system were articulated.

  2. A German survey of the abdominal transplantation surgical work force.

    Science.gov (United States)

    Thomas, Michael N; Nadalin, Silvio; Schemmer, Peter; Pascher, Andreas; Kaiser, Gernot M; Braun, Felix; Becker, Thomas; Nashan, Björn; Guba, Markus

    2015-07-01

    This manuscript reports the results of a nationwide survey of transplant surgeons in Germany, including the demographics, training, position, individual case loads, center volumes, program structure, professional practice, grade of specialization, workload, work hours, salary, and career expectations. We contacted all 32 German transplant centers that perform liver, kidney, and pancreas transplantation. Surgeons engaged in transplantation were asked to reply to the survey. Eighty-five surgeons responded, with a mean age of 44 ± 8 years, 13% of whom were female. The median transplant frequency per active transplant surgeon was relatively low, with 16 liver transplants, 15 kidney transplants, and three pancreas transplants. The median reported center volumes were 45 liver transplants, 90 kidney transplants, and five pancreas transplants per year. Most of the surgeons reported a primary focus on hepato-pancreato-biliary surgery, and only 10% of effective work time was actually dedicated to perform transplant surgeries. The majority of respondents estimated their weekly work hours to be between 55 and 66 h. When asked about their career satisfaction and expectations, most respondents characterized their salaries as inappropriately low and their career prospects as inadequate. This survey provides a first impression of the transplant surgery work force in Germany. © 2015 Steunstichting ESOT.

  3. 77 FR 11127 - Medicaid Program; Announcement of Medicaid Recovery Audit Contractors (RACs) Contingency Fee Update

    Science.gov (United States)

    2012-02-24

    ... DEPARTMENT OF HEALTH AND HUMAN SERVICES Centers for Medicare & Medicaid Services [CMS-6034-N] Medicaid Program; Announcement of Medicaid Recovery Audit Contractors (RACs) Contingency Fee Update AGENCY: Centers for Medicare & Medicaid Services (CMS), HHS. ACTION: Notice. SUMMARY: This notice announces an...

  4. Three-year post-transplant medicare payments in kidney transplant recipients: Associations with pre-transplant comorbidities

    Directory of Open Access Journals (Sweden)

    Gerardo Machnicki

    2011-01-01

    Full Text Available Little is known about the influence of pre-transplant comorbidities on post-transplant expenditures. We estimated the associations between pre-transplant comorbidities and post-transplant Medicare costs, using several comorbidity classification systems. We included recipients of first-kidney deceased donor transplants from 1995 through 2002 for whom Medicare was the primary payer for at least one year pre-transplant (N = 25,175. We examined pre-transplant comorbidities as classified by International Classification of Diseases (ICD-9-CM codes from Medicare claims with the Clinical Cla-ssifications Software (CCS and Charlson and Elixhauser algorithms. Post-transplant costs were calcu-lated from payments on Medicare claims. We developed models considering Organ Procurement and Transplantation Network (OPTN variables plus: 1 CCS categories, 2 Charlson, 3 Elixhauser, 4 num-ber of Charlson and 5 number of Elixhauser comorbidities, independently. We applied a novel regression methodology to account for censoring. Costs were estimated at individual and population levels. The comorbidities with the largest impact on mean Medicare payments included cardiovascular disease, ma-lignancies, cerebrovascular disease, mental conditions and functional limitations. Skin ulcers and infec-tions, rheumatic and other connective tissue disease and liver disease also contributed to payments and have not been considered or described previously. A positive graded relationship was found between costs and the number of pre-transplant comorbidities. In conclusion, we showed that expansion beyond the usually considered pre-transplant comorbidities with inclusion of CCS and Charlson or Elixhauser comorbidities increased the knowledge about comorbidities related to augmented Medicare payments. Our expanded methodology can be used by others to assess more accurately the financial implications of renal transplantation to Medicare and individual transplant centers.

  5. How Should Social Media Be Used in Transplantation? A Survey of The American Society of Transplant Surgeons.

    Science.gov (United States)

    Henderson, Macey L; Adler, Joel T; Van Pilsum Rasmussen, Sarah E; Thomas, Alvin G; Herron, Patrick D; Waldram, Madeleine M; Ruck, Jessica M; Purnell, Tanjala S; DiBrito, Sandra R; Holscher, Courtenay M; Haugen, Christine E; Alimi, Yewande; Konel, Jonathan M; Eno, Ann K; Garonzik Wang, Jacqueline M; Gordon, Elisa J; Lentine, Krista L; Schaffer, Randolph L; Cameron, Andrew M; Segev, Dorry L

    2018-04-21

    Social media platforms are increasingly used in surgery and have shown promise as effective tools to promote deceased donation and expand living donor transplantation. There is growing need to understand how social media-driven communication is perceived by providers in the field of transplantation. We surveyed 299 members of the American Society of Transplant Surgeons (ASTS) about their use of, attitudes toward, and perceptions of social media and analyzed relationships between responses and participant characteristics. Respondents used social media to communicate with: family and friends (76%), surgeons (59%), transplant professionals (57%), transplant recipients (21%), living donors (16%), and waitlisted candidates (15%). Most respondents (83%) reported using social media for at least one purpose. While most (61%) supported sharing information with transplant recipients via social media, 42% believed it should not be used to facilitate living donor-recipient matching. Younger age (p=0.02) and fewer years of experience in the field of transplantation (p=0.03) were associated with stronger belief that social media can be influential in living organ donation. Respondents at transplant centers with higher reported use of social media had more favorable views about sharing information with transplant recipients (psocial media. Transplant center involvement and support for social media may influence clinician perceptions and practices. Increasing use of social media among transplant professionals may provide an opportunity to deliver high quality information to patients.

  6. Gaming the Liver Transplant Market

    OpenAIRE

    Jason Snyder

    2010-01-01

    The liver transplant waiting list is designed to allocate livers to the sickest patients first. Before March 1, 2002, livers were allocated to patients based on objective clinical indicators and subjective factors. In particular, a center placing a prospective transplant recipient in the intensive care unit (ICU) leads to a higher position on the liver transplant waiting list. After March 1, 2002, a policy reform mandated that priority on the liver transplant waiting list no longer be influen...

  7. Waste Management Project Contingency Analysis

    International Nuclear Information System (INIS)

    Edward L. Parsons, Jr.

    1999-01-01

    The purpose of this report is to provide the office of Waste Management (WM) with recommended contingency calculation procedures for typical WM projects. Typical projects were defined as conventional construction-type activities that use innovative elements when necessary to meet the project objectives. Projects involve treatment, storage, and disposal of low level, mixed low level, hazardous, transuranic, and high level waste. Cost contingencies are an essential part of Total Cost Management. A contingency is an amount added to a cost estimate to compensate for unexpected expenses resulting from incomplete design, unforeseen and unpredictable conditions, or uncertainties in the project scope (DOE 1994, AACE 1998). Contingency allowances are expressed as percentages of estimated cost and improve cost estimates by accounting for uncertainties. The contingency allowance is large at the beginning of a project because there are more uncertainties, but as a project develops, the allowance shrinks to adjust for costs already incurred. Ideally, the total estimated cost remains the same throughout a project. Project contingency reflects the degree of uncertainty caused by lack of project definition, and process contingency reflects the degree of uncertainty caused by use of new technology. Different cost estimation methods were reviewed and compared with respect to terminology, accuracy, and Cost Guide standards. The Association for the Advancement of Cost Engineering (AACE) methods for cost estimation were selected to represent best industry practice. AACE methodology for contingency analysis can be readily applied to WM Projects, accounts for uncertainties associated with different stages of a project, and considers both project and process contingencies and the stage of technical readiness. As recommended, AACE contingency allowances taper off linearly as a project nears completion

  8. Use of hematopoietic cell transplants to achieve tolerance in patients with solid organ transplants

    OpenAIRE

    Strober, Samuel

    2016-01-01

    The goals of tolerance in patients with solid organ transplants are to eliminate the lifelong need for immunosuppressive (IS) drugs and to prevent graft loss due to rejection or drug toxicity. Tolerance with complete withdrawal of IS drugs has been achieved in recipients of HLA-matched and mismatched living donor kidney transplants in 3 medical centers using hematopoietic cell transplants to establish mixed or complete chimerism.

  9. Organ Procurement and Transplantation Network/Scientific Registry of Transplant Recipients 2014 Data Report: Intestine.

    Science.gov (United States)

    Cai, Junchao; Wu, Guosheng; Qing, Annie; Everly, Matthew; Cheng, Elaine; Terasaki, Paul

    2014-01-01

    As of September 19, 2014, 2441 cases of intestinal transplantation have been performed in 46 centers (2400 deceased, 41 living). Eight centers did more than 100 transplants. Annual case numbers peaked in 2007 (N = 198) and steadily decreased to 109 cases in 2013. Short gut syndrome (68%) and functional bowel problems (15%) are two major indications for intestinal transplantation. The 3 major types of transplants involving the intestine include: isolated intestine transplant (I); simultaneous intestine, liver, and pancreas transplant (I+L+P); and, combined intestine and liver (I+L) transplant. Graft survival has significantly improved in recent years, mainly due to improved first year graft survival. The 1-, 5-, and 10-year graft survivals were: 74%, 42%,and 26%, respectively (I); 70%, 50%, and 40%, respectively (I+L+P); and 61%, 46%, and 40%, respectively (I+L). The longest graft survivals for I, l+L+P, and l+L were 19 years, 16 years, and 23 years, respectively. Steroids, Thymoglobulin, and rituximab are 3 major induction agents used in recent years. Prograf, steroids, and Cellcept are 3 major maintenance agents. Induction recipients (68% of all patients) had a significantly lower acute rejection rate than nonrecipients before discharge (60% versus 75%, p compatible transplants. ABO identical transplant recipients had a significantly higher 5-year graft survival rate than ABO compatible recipients (39% versus 21%, p compatible (N = 188, 11%) than in the early decade (p compatible transplants were lower than those of ABO identical transplants. However, the difference did not reach statistical significance (46% versus 49%, p = 0.07). The effect of ABO compatibility on graft outcome was further confirmed by Cox Analysis. ABO incompatible transplants are still rarely performed (N = 4) in intestine. In conclusion, annual case numbers of intestinal transplants have been decreasing, regardless of improved graft survival. ABO compatible intestinal transplants previously

  10. Deceased donor renal transplantation: A single center experience

    Directory of Open Access Journals (Sweden)

    N Gopalakrishnan

    2017-01-01

    Full Text Available Deceased donor renal transplantation (DDRT constitutes less than 5% of all kidney transplantats in India. A retrospective analysis of 173 deceased donor renal transplants performed in a public funded government hospital was done. Mean age of the recipients was 36 years (male:female ratio 2.4:1, and that of the donors was 32.3 years (male:female ratio 6:1. The cold ischemic time was 340 ± 170 minutes. Mean follow-up period was 36 months. Forty one patients died, 75% of them in the first post – transplant year. Sepsis and cardiovascular disease were the most common causes of death. Twenty two percent had acute rejection. There was no significant difference in the incidence in the rate of acute rejection, bacterial, fungal infections and death rate between the cohorts of induction and non induction immunosuppression. The patient and death censored graft survival at 1 year were 80 and 82.6% and at 5 years were 76 and 80% respectively.

  11. Future Contingents

    DEFF Research Database (Denmark)

    Øhrstrøm, Peter; Hasle., Per F. V.

    2015-01-01

    contingent statements. The problem of future contingents is interwoven with a number of issues in theology, philosophy, logic, semantics of natural language, computer science, and applied mathematics. The theological issue of how to reconcile the assumption of God's foreknowledge with the freedom and moral...... accountability of human beings has been a main impetus to the discussion and a major inspiration to the development of various logical models of time and future contingents. This theological issue is connected with the general philosophical question of determinism versus indeterminism. Within logic, the relation...... about the future. Finally, it should be mentioned that temporal logic has found a remarkable application in computer science and applied mathematics. In the late 1970s the first computer scientists realised the relevance of temporal logic for the purposes of computer science (see Hasle and Øhrstrøm 2004)....

  12. Future Contingents

    DEFF Research Database (Denmark)

    Øhrstrøm, Peter; Hasle., Per F. V.

    2011-01-01

    contingent statements. The problem of future contingents is interwoven with a number of issues in theology, philosophy, logic, semantics of natural language, computer science, and applied mathematics. The theological issue of how to reconcile the assumption of God's foreknowledge with the freedom and moral...... accountability of human beings has been a main impetus to the discussion and a major inspiration to the development of various logical models of time and future contingents. This theological issue is connected with the general philosophical question of determinism versus indeterminism. Within logic, the relation...... about the future. Finally, it should be mentioned that temporal logic has found a remarkable application in computer science and applied mathematics. In the late 1970s the first computer scientists realised the relevance of temporal logic for the purposes of computer science (see Hasle and Øhrstrøm 2004)....

  13. Decision making in liver transplant selection committees: a multicenter study.

    Science.gov (United States)

    Volk, Michael L; Biggins, Scott W; Huang, Mary Ann; Argo, Curtis K; Fontana, Robert J; Anspach, Renee R

    2011-10-18

    To receive a liver transplant, patients must first be placed on a waiting list-a decision made at most transplant centers by a multidisciplinary committee. The function of these committees has never been studied. To describe decision making in liver transplant committees and identify opportunities for process improvement. Observational multicenter study. 4 liver transplant centers in the United States. 68 members of liver transplant committees across the 4 centers. 63 meetings were observed, and 50 committee members were interviewed. Recorded transcripts and field notes were analyzed by using standard qualitative sociologic methods. Although the structure of the meetings varied by center, the process was uniform and primarily involved inductive reasoning to review possible reasons for patient exclusion. Patients were excluded if they were too well, too sick (in the setting of advanced liver disease), or too old or had nonhepatic comorbid conditions, substance abuse problems, or other psychosocial barriers. Dominant themes in the discussions included member angst over deciding who lived or died, a high correlation between psychosocial barriers to transplantation and the patient's socioeconomic status, and the influence of external forces on decision making. Unwritten center policies and confusion regarding advocacy versus stewardship roles were consistently identified as barriers to effective group decision making. The use of qualitative methods provides broad understanding but limits specific inferences. The 4 centers may not reflect the practices of every transplant center nationwide. The difficult decisions made by liver transplant committees are reasonably consistent and well-intentioned, but the process might be improved by having more explicit written policies and clarifying roles. This may inform resource allocation in other areas of medicine. The Greenwall Foundation and the National Institutes of Health.

  14. Cytomegalovirus disease in renal transplant recipients: a single-center experience.

    Science.gov (United States)

    Bhadauria, Dharmendra; Sharma, R K; Kaul, A; Prasad, Narayan; Gupta, Amit; Gupta, Anurag; Srivastava, Aneesh

    2012-09-01

    Cytomegalovirus (CMV) is the most common viral infection following kidney transplant, has been recognized as a major factor for graft loss and increased incidence of acute rejection. Different studies have reported a variable incidence of CMV disease with the use of Mycophenolate mofetil (MMF). We retrospectively analyzed our renal transplant recipients to review the results of CMV disease and to compare CMV disease in patient on Azathioprine and MMF for this purpose we retrospectively reviewed 521 live related kidney transplant recipients at our institute. 74 (14.2 %) live related allograft recipients developed CMV disease after a median interval of 7.18 ± 4.35 months from transplantation. The mean age was 36.15 ± 10.7 years. 63 of the patients were male. Malaise, fever and diarrhea were among most common symptoms. 20 (27.02 %) of the 74 recipients developed transaminitis, 13 (17.2 %) developed CMV gastritis, 5 (9.13 %) recipients developed pneumonia, and 3 (4.05 %) patient developed colitis. 59 (80 %) patients had leucopenia and 41 (56.5 %) developed thrombocytopenia. Mean serum creatinine level was 1.5 ± 0.4 (0.9-2.4) mg/dl before the disease, 1.9 ± 0.6 (1.3-3.6) mg/dl at the time of the diagnosis, and 1.7 ± 0.06 (0.8-4.2) mg/dl at the end of the treatment. CMV disease developed in 9 (36 %) of recipients who received basiliximab as induction therapy and 13 (30.24 %) of recipients who received ATG (p > 0.05). The incidence of CMV disease was similar in cyclosporine based regimen (13.2 %) and Tacrolimus based regimen 27 (16.16 %) (p = 0.137) and was also similar in Azathioprine 41 (9.5 %) and MMF group 33 (14.3 %) (p = 0.163). There was no significant difference in severity of CMV disease in both groups, except a higher incidence of leucopenia in Azathioprine group (86 vs. 74 %, p < 0.05) as compared to MMF group. 51 (68.91 %) patient developed graft dysfunction during CMV disease. In conclusion we report a low incidence

  15. 49 CFR 1544.301 - Contingency plan.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 9 2010-10-01 2010-10-01 false Contingency plan. 1544.301 Section 1544.301... COMMERCIAL OPERATORS Threat and Threat Response § 1544.301 Contingency plan. Each aircraft operator must adopt a contingency plan and must: (a) Implement its contingency plan when directed by TSA. (b) Ensure...

  16. Supervisory Styles: A Contingency Framework

    Science.gov (United States)

    Boehe, Dirk Michael

    2016-01-01

    While the contingent nature of doctoral supervision has been acknowledged, the literature on supervisory styles has yet to deliver a theory-based contingency framework. A contingency framework can assist supervisors and research students in identifying appropriate supervisory styles under varying circumstances. The conceptual study reported here…

  17. The effect of the Syrian crisis on organ transplantation in Syria.

    Science.gov (United States)

    Saeed, Bassam

    2015-04-01

    The war in Syria that started in March 2011 has destroyed much of the country's infrastructure including many hospitals. The total number of kidney transplants performed in Syria in 2010 was 385 transplants before the number gradually declined to 154 transplants in 2013, a decrease of 60%. In addition, the number of operational kidney transplant centers has decreased from 8 to 4 centers. Unrelated-donor kidney transplant decreased from 70% during the years that preceded the crisis to 47% in 2013. More than 50% of physicians and surgeons involved in kidney transplant are not practicing transplant currently in their centers. Difficulties in the provision of immunosuppressive drugs for all patients in all provinces constitute a major challenge for the health authorities and transplant patients, especially patients who cannot arrange an alternate source. The project to initiate liver transplant came to a halt because foreign trainers could not visit Syria. The autologous bone marrow transplant program continued to function, but in a smaller and irregular manner. The commitment of transplant teams despite the large challenges was, and still is, extraordinary. In conclusion, all aspects of organ transplant have been affected, paralyzing new projects and negatively affecting existing programs.

  18. Significant others and contingencies of self-worth: activation and consequences of relationship-specific contingencies of self-worth.

    Science.gov (United States)

    Horberg, E J; Chen, Serena

    2010-01-01

    Three studies tested the activation and consequences of contingencies of self-worth associated with specific significant others, that is, relationship-specific contingencies of self-worth. The results showed that activating the mental representation of a significant other with whom one strongly desires closeness led participants to stake their self-esteem in domains in which the significant other wanted them to excel. This was shown in terms of self-reported contingencies of self-worth (Study 1), in terms of self-worth after receiving feedback on a successful or unsatisfactory performance in a relationship-specific contingency domain (Study 2), and in terms of feelings of reduced self-worth after thinking about a failure in a relationship-specific contingency domain (Study 3). Across studies, a variety of contingency domains were examined. Furthermore, Study 3 showed that failing in an activated relationship-specific contingency domain had negative implications for current feelings of closeness and acceptance in the significant-other relationship. Overall, the findings suggest that people's contingencies of self-worth depend on the social situation and that performance in relationship-specific contingency domains can influence people's perceptions of their relationships.

  19. Licensee safeguards contingency plans

    International Nuclear Information System (INIS)

    Anon.

    1978-01-01

    The Nuclear Regulatory Commission is amending its regulations to require that licensees authorized to operate a nuclear reactor (other than certain research and test reactors), and those authorized to possess strategic quantities of plutonium, uranium-233, or uranium-235 develop and implement acceptable plans for responding to threats, thefts, and industrial sabotage of licensed nuclear materials and facilities. The plans will provide a structured, orderly, and timely response to safeguards contingencies and will be an important segment of NRC's contingency planning programs. Licensee safeguards contingency plans will result in organizing licensee's safeguards resources in such a way that, in the unlikely event of a safeguards contingency, the responding participants will be identified, their several responsibilities specified, and their responses coordinated

  20. 30 CFR 282.26 - Contingency Plan.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 2 2010-07-01 2010-07-01 false Contingency Plan. 282.26 Section 282.26 Mineral... § 282.26 Contingency Plan. (a) When required by the Director, a lessee shall include a Contingency Plan as part of its request for approval of a Delineation, Testing, or Mining Plan. The Contingency Plan...

  1. Assessment of readiness for clinical decision support to aid laboratory monitoring of immunosuppressive care at U.S. liver transplant centers.

    Science.gov (United States)

    Jacobs, J; Weir, C; Evans, R S; Staes, C

    2014-01-01

    Following liver transplantation, patients require lifelong immunosuppressive care and monitoring. Computerized clinical decision support (CDS) has been shown to improve post-transplant immunosuppressive care processes and outcomes. The readiness of transplant information systems to implement computerized CDS to support post-transplant care is unknown. a) Describe the current clinical information system functionality and manual and automated processes for laboratory monitoring of immunosuppressive care, b) describe the use of guidelines that may be used to produce computable logic and the use of computerized alerts to support guideline adherence, and c) explore barriers to implementation of CDS in U.S. liver transplant centers. We developed a web-based survey using cognitive interviewing techniques. We surveyed 119 U.S. transplant programs that performed at least five liver transplantations per year during 2010-2012. Responses were summarized using descriptive analyses; barriers were identified using qualitative methods. Respondents from 80 programs (67% response rate) completed the survey. While 98% of programs reported having an electronic health record (EHR), all programs used paper-based manual processes to receive or track immunosuppressive laboratory results. Most programs (85%) reported that 30% or more of their patients used external laboratories for routine testing. Few programs (19%) received most external laboratory results as discrete data via electronic interfaces while most (80%) manually entered laboratory results into the EHR; less than half (42%) could integrate internal and external laboratory results. Nearly all programs had guidelines regarding pre-specified target ranges (92%) or testing schedules (97%) for managing immunosuppressive care. Few programs used computerized alerting to notify transplant coordinators of out-of-range (27%) or overdue laboratory results (20%). Use of EHRs is common, yet all liver transplant programs were largely

  2. Use of hematopoietic cell transplants to achieve tolerance in patients with solid organ transplants.

    Science.gov (United States)

    Strober, Samuel

    2016-03-24

    The goals of tolerance in patients with solid organ transplants are to eliminate the lifelong need for immunosuppressive (IS) drugs and to prevent graft loss due to rejection or drug toxicity. Tolerance with complete withdrawal of IS drugs has been achieved in recipients of HLA-matched and mismatched living donor kidney transplants in 3 medical centers using hematopoietic cell transplants to establish mixed or complete chimerism. © 2016 by The American Society of Hematology.

  3. Ten-Year Experience of Renal Transplantation at the Northwest National Medical Center, Sonora Mexico: A Survival Study.

    Science.gov (United States)

    Ma, M A; Laguna-Teniente, I R

    2016-03-01

    To improve survival after kidney transplantation, it is important to identify the variables that affect it. The aim of this work was to determine the survival of renal grafts from living and cadaveric donors and the survival of patients with graft failure in a tertiary medical unit in northwest Mexico. We performed a retrospective cohort study of patients who received transplants since 2004 at the center. Database and medical records of patients were reviewed. The data were captured in a database previously designed in the SPSS v21.1 program for statistical processing. A descriptive analysis with frequencies and percentages and numeric variables measure of central tendency and dispersion was conducted. The survival analysis was made with the Kaplan-Meier method to estimate the graft survive. A total of 412 transplantations were performed during the 2004-2013 period. We analyzed 331 records, and the 10-year survival rates of donor allografts from living and cadaveric donors were 86.64% and 72.78%, respectively. Copyright © 2016 Elsevier Inc. All rights reserved.

  4. Chronic transplant dysfunction: Etiological and pathophysiological aspects

    NARCIS (Netherlands)

    E.A. Kouwenhoven (Ewout)

    1999-01-01

    textabstractOrgan transplantation has saved the life of many people throughout the world, who suffered from end·stage organ failure. The University Hospital Rotterdam·Dijkzigt, is one of the Dutch organ transplant centers, in which kidney, heart and liver transplantation are performed. In close

  5. Socioeconomic aspects of heart transplantation.

    Science.gov (United States)

    Evans, R W

    1995-03-01

    Heart transplantation is an established treatment modality for end-stage cardiac disease. Unfortunately, relative to other health care priorities, heart transplantation has fallen into disrepute. Efforts to reform the health care system have focused on three fundamental issues--cost, quality, and access. On each count, heart transplantation is vulnerable to criticism. Managed care is an incremental approach to health care reform that imposes fiscal constraint on providers. This constraint is expressed in the form of capitation which, in turn, requires providers to assume risk and accept economic responsibility for clinical decisions. While the need for transplantation is considerable, there are both clinical and economic factors limiting the overall level of activity. In 1993, over 2200 heart transplants were performed in the United States on people who were dying of end-stage cardiac disease. The total demand for heart transplantation was estimated to be about 5900 persons, which was not met due to an insufficient supply of donor hearts. Absent donors, the fiscal consequences of heart transplantation are minimized. In 1993, actuaries estimated that the total charge per heart transplant was $209,100. By designating centers based on price and quality considerations, managed care plans have reduced this per procedure expense to less than $100,000. While the benefits of transplantation are noteworthy, there are still concerns. Sixty percent of patients report that they are able to work, but only 30% do so. Employers hope to improve upon this record by expanding the designated center approach. In conclusion, the future of heart transplantation is unclear. Opportunities for innovation are limited, although the management of heart failure is an area of increased interest.

  6. Contingent Conspiracies: Art, Philosophy, Science

    DEFF Research Database (Denmark)

    Wilson, Alexander

    2013-01-01

    The question of whether creativity comes from being “open” or “closed” to contingent processes, deeply intersects art-historical discourse on authorship, style, technique and practice: from the Greek notion of the Daimon, through commedia dell'arte’s improvised styles and romanticism’s investment......, Hegel) contain a deeper tension between contingency and necessity, often revealed in correlate discussions of the sublime. But as artists find themselves returning again to a concern or care for contingency (a thread running through Heidegger, Levinas and Derrida) or the question how to conspire...... with contingency (Negarestani), they do so today with a new paradigm of scientific knowledge at their disposal. For science too has increasingly been forced to respond to the notion of contingency. Progressively discovering the ubiquity of non-linear dynamics, deterministic chaos and emergent complexity...

  7. Contingency diagrams as teaching tools

    OpenAIRE

    Mattaini, Mark A.

    1995-01-01

    Contingency diagrams are particularly effective teaching tools, because they provide a means for students to view the complexities of contingency networks present in natural and laboratory settings while displaying the elementary processes that constitute those networks. This paper sketches recent developments in this visualization technology and illustrates approaches for using contingency diagrams in teaching.

  8. Discontinuation of steroids in ABO-incompatible renal transplantation

    DEFF Research Database (Denmark)

    Novosel, Marija Kristina; Bistrup, C.

    2016-01-01

    A steroid-free protocol for ABO-compatible renal transplantation has been used at our center since 1983. To minimize the adverse effects of steroids, we also developed a steroid sparing protocol for ABO-incompatible renal transplantation in 2008. The present study is a report of our results....... A retrospective review of the first 50 ABO-incompatible renal transplantations performed at a single university center. If no immunological events occurred in the post-transplant period, prednisolone tapering was initiated approximately 3 months after transplantation. Forty-three patients completed prednisolone...... to antirejection treatment. Overall, 1-year rejection rate was 19%. One- and 3-year graft survival was 94% and 91%, respectively. One-year post-transplant median serum creatinine was 123 mol/L. We found acceptable rejection rates, graft survival, and creatinine levels in patients undergoing ABO-incompatible renal...

  9. The National Kidney Registry: 175 transplants in one year.

    Science.gov (United States)

    Veale, Jeffrey; Hil, Garet

    2011-01-01

    Since organizing its first swap in 2008, the National Kidney Registry had facilitated 389 kidney transplants by the end of 2011 across 45 U.S. transplant centers. Rapid innovations, advanced computer technologies, and an evolving understanding of the processes at participating transplant centers and histocompatibility laboratories are among the factors driving the success of the NKR. Virtual cross match accuracy has improved from 43% to 94% as a result of improvements in the HLA typing process for donor antigens and enhanced mechanisms to list unacceptable HLA antigens for sensitized patients. By the end of 2011, the NKR had transplanted 66% of the patients enrolled since 2008. The 2011 wait time (from enrollment to transplant) for the 175 patients transplanted that year averaged 5 months.

  10. Early Non-Immunological Post Transplant complications: A Single Center Experience

    Directory of Open Access Journals (Sweden)

    Jabur Wael

    2008-01-01

    Full Text Available To assess non-immunological complications affecting renal transplant patients in the first six months after transplantation in Al-Karama hospital, Baghdad, Iraq, we studied 68 patients (49 males, 19 females attending the clinic during the year 2006. Forty six (67% patients received kidneys from related and 22 (33% from unrelated donors. The patients revealed the following complications: post transplant hypertension in 28 (41% patient, infection (mostly bacterial in 27 (37%, new onset diabetes in 11 (16%, calcineurin inhibitor toxicity in 10 (14%, anemia in 8 (12%, surgical complications in 7 (10%, slow graft recovery in 4 (6%, cardiovascular complications in 3 (4%, and Kaposi sarcoma in 2 (2.9%.Transient hyperglycemia, hypertension, infection and diabetes mel-litus were the commonest early complications of renal transplantation. The incidence of complications is comparable to the average reported in the literature, especially in this region of the world.

  11. SRTR center-specific reporting tools: Posttransplant outcomes.

    Science.gov (United States)

    Dickinson, D M; Shearon, T H; O'Keefe, J; Wong, H-H; Berg, C L; Rosendale, J D; Delmonico, F L; Webb, R L; Wolfe, R A

    2006-01-01

    Measuring and monitoring performance--be it waiting list and posttransplant outcomes by a transplant center, or organ donation success by an organ procurement organization and its partnering hospitals--is an important component of ensuring good care for people with end-stage organ failure. Many parties have an interest in examining these outcomes, from patients and their families to payers such as insurance companies or the Centers for Medicare and Medicaid Services; from primary caregivers providing patient counseling to government agencies charged with protecting patients. The Scientific Registry of Transplant Recipients produces regular, public reports on the performance of transplant centers and organ procurement organizations. This article explains the statistical tools used to prepare these reports, with a focus on graft survival and patient survival rates of transplant centers--especially the methods used to fairly and usefully compare outcomes of centers that serve different populations. The article concludes with a practical application of these statistics--their use in screening transplant center performance to identify centers that may need remedial action by the OPTN/UNOS Membership and Professional Standards Committee.

  12. Histocompatibility Testing for Organ Transplantation Purposes in Albania: A Single Center Experience

    Directory of Open Access Journals (Sweden)

    Erkena Shyti

    2014-06-01

    Full Text Available Background: Histocompatibility testing (HT which includes donor-recipient human leukocyte antigen (HLA matching, cross-match testing (XMT and anti-HLA antibody searching are crucial examinations in solid organ transplantation aiming to avoid the hyperacute graft rejection and also to predict the immunological outcome of the graft. Aims: The aim of this study was to analyse the tissue typing data collected at the Laboratory of Immunology and Histocompatibility of the University Hospital Center of Tirana, Albania, in order to define those actions that should be taken for improvements in the situation of kidney transplantation in Albania. Design: Descriptive study. Methods: The donor/recipient cross-match testing was performed through a standard complement-dependent cytotoxicity (CDC assay using separated donor T and B cells that were tested in parallel with the recipient serum sample. All recipient sera were screened for anti-Class I and anti-Class II HLA antibodies using a bead based Luminex anti-HLA antibody screening test. In the case of detected positivity, an allele-specific anti-HLA antibody determination was conducted with the respective Luminex anti-Class I and Class II HLA antibody determination kits. Results: A total of 174 recipients and 202 donors were typed for the purpose of living donor kidney transplantation at our laboratory between January 2006 and December 2012. The mean age and female gender proportion of patients were 34.9 years and 34.5%, respectively, and 48.0 years and 65.3% for the donors, respectively. Here, 25.9% of the patients reported a positive complement-dependent cytotoxicity cross-match test and/or a positive anti-HLA antibody testing result. Eighteen patients that were negative for the complement-dependent cytotoxicity cross-match test were positive for anti-HLA antibodies. Conclusion: The predominant causes of end-stage renal disease (ESRD in our patient population are chronic pyelonephritis and

  13. Liver transplantation for severe hepatic trauma: Experience from a single center

    Institute of Scientific and Technical Information of China (English)

    Spiros G Delis; Andreas Bakoyiannis; Gennaro Selvaggi; Debbie Weppler; David Levi; Andreas G Tzakis

    2009-01-01

    Liver transplantation has been reported in the literature as an extreme intervention in cases of severe and complicated hepatic trauma. The main indications for liver transplant in such cases were uncontrollable bleeding and postoperative hepatic insufficiency. We here describe four cases of orthotopic liver transplantation after penetrating or blunt liver trauma. The indications were liver failure, extended liver necrosis, liver gangrene and multiple episodes of gastrointestinal bleeding related to portal hypertension, respectively. One patient died due to postoperative cerebral edema. The other three patients recovered well and remain on immunosuppression. Liver transplantation should be considered as a saving procedure in severe hepatic trauma, when all other treatment modalities fail.

  14. The Start-Up of the first Hematopoietic Stem Cell Transplantation Center in the Iraqi Kurdistan: a Capacity-Building Cooperative Project by the Hiwa Cancer Hospital, Sulaymaniyah, and the Italian Agency for Development Cooperation: an Innovative Approach.

    Science.gov (United States)

    Majolino, Ignazio; Othman, Dosti; Rovelli, Attilio; Hassan, Dastan; Rasool, Luqman; Vacca, Michele; Abdalrahman, Nigar; Abdullah, Chra; Ahmed, Zhalla; Ali, Dlir; Ali, Kosar; Broggi, Chiara; Calabretta, Cinzia; Canesi, Marta; Ciabatti, Gloria; Del Fante, Claudia; De Sapio, Elisabetta; Dore, Giovanna; Frigato, Andrea; Gabriel, Marcela; Ipsevich, Francesco; Kareem, Harem; Karim, Dana; Leone, Rosa; Mahmood, Tavan; Manna, Annunziata; Massei, Maria Speranza; Mastria, Andrea; Mohammed, Dereen; Mohammed, Rebar; Najmaddin, Khoshnaw; Noori, Diana; Ostuni, Angelo; Palmas, Angelo; Possenti, Marco; Qadir, Ali; Real, Giorgio; Shrif, Rebwar; Valdatta, Caterina; Vasta, Stefania; Verna, Marta; Vittori, Mariangela; Yousif, Awder; Zallio, Francesco; Calisti, Alessandro; Quattrocchi, Sergio; Girmenia, Corrado

    2017-01-01

    We describe the entire process leading to the start-up of a hematopoietic stem cell transplantation center at the Hiwa Cancer Hospital, in the city of Sulaymaniyah, Kurdistan Iraqi Region. This capacity building project was funded by the Italian Development Cooperation Agency and implemented with the support of the volunteer work of Italian professionals, either physicians, nurses, biologists and technicians. The intervention started in April 2016, was based exclusively on training and coaching on site, that represent a significant innovative approach, and led to a first autologous transplant in June 2016 and to the first allogeneic transplant in October. At the time of reporting, 9 months from the initiation of the project, 18 patients have been transplanted, 15 with an autologous and 3 with an allogeneic graft. The center at the HCH represents the first transplantation center in Kurdistan and the second in wide Iraq. We conclude that international development cooperation may play an important role also in the field of high-technology medicine, and contribute to improved local centers capabilities through country to country scientific exchanges. The methodology to realize this project is innovative, since HSCT experts are brought as volunteers to the center(s) to be started, while traditionally it is the opposite, i.e. the local professionals to be trained are brought to the specialized center(s).

  15. Mycophenolate mofetil in pediatric renal transplantation: a single center experience.

    LENUS (Irish Health Repository)

    Raheem, Omer A

    2012-02-01

    We assessed our long-term experience with regards to the safety and efficacy of MMF in our pediatric renal transplant population and compared it retrospectively to our previous non-MMF immunosuppressive regimen. Forty-seven pediatric renal transplants received MMF as part of their immunosuppressive protocol in the period from January 1997 till October 2006 (MMF group). A previously reported non-MMF group of 59 pediatric renal transplants was included for comparative analysis (non-MMF group). The MMF group comprised 29 boys and 18 girls, whereas the non-MMF group comprised 34 boys and 25 girls. Mean age was 11.7 and 12 yr in the MMF and non-MMF groups, respectively. The incidence of acute rejection episodes was 11 (23.4%) and 14 (24%) in the MMF and non-MMF group, respectively. Two (3.3%) grafts were lost in the non-MMF group compared with one (2.1%) in the MMF group. Twenty-one (44.68%) patients in the MMF group developed post-transplant infections compared with 12 (20.33%) in the non-MMF group (p < 0.0001). In conclusion, the use of MMF in pediatric renal transplantation was not associated with a lower rejection rate or immunological graft loss. It did, however, result in a significantly higher rate of viral infections.

  16. Contingency Contractor Optimization Phase 3 Sustainment Software Design Document - Contingency Contractor Optimization Tool - Prototype

    Energy Technology Data Exchange (ETDEWEB)

    Durfee, Justin David; Frazier, Christopher Rawls; Bandlow, Alisa; Jones, Katherine A

    2016-05-01

    This document describes the final software design of the Contingency Contractor Optimization Tool - Prototype. Its purpose is to provide the overall architecture of the software and the logic behind this architecture. Documentation for the individual classes is provided in the application Javadoc. The Contingency Contractor Optimization project is intended to address Department of Defense mandates by delivering a centralized strategic planning tool that allows senior decision makers to quickly and accurately assess the impacts, risks, and mitigation strategies associated with utilizing contract support. The Contingency Contractor Optimization Tool - Prototype was developed in Phase 3 of the OSD ATL Contingency Contractor Optimization project to support strategic planning for contingency contractors. The planning tool uses a model to optimize the Total Force mix by minimizing the combined total costs for selected mission scenarios. The model optimizes the match of personnel types (military, DoD civilian, and contractors) and capabilities to meet mission requirements as effectively as possible, based on risk, cost, and other requirements.

  17. [Orthotopic liver transplantation in adult patients with cadaveric grafts. Experience of the Fundeni Center of General Surgery and Liver Transplantation].

    Science.gov (United States)

    Popescu, I; Ionescu, M; Tulbure, D; Ciurea, S; Băilă, S; Braşoveanu, V; Hrehoreţ, D; Sârbu-Boeţi, P; Pietrăreanu, D; Alexandrescu, S; Dorobanţu, B; Gheorghe, L; Gheorghe, C; Mihăilă, M; Boroş, M; Croitoru, M; Herlea, V

    2005-01-01

    We analyze the experience of the Center of General Surgery and Liver Transplantation from the Fundeni Clinical Institute (Bucharest, Romania) regarding orthotopic liver transplantation (OLT) in adult recipients, with whole liver grafts from cadaveric donors, between April 2000 (when the first successful LT was performed in Romania) and December 2004. This series includes 37 OLTs in adult recipients (16 women and 21 men, aged between 29-57 years--average 46 years). Other two LT with whole liver cadaveric grafts and two reduced-size LT were performed in children; also, in the same period, due to the acute organ shortage, other methods of LT were performed in 28 patients (21 living donor LT, 6 split LT and one "do mino" LT), that were not included in the present series. The indications for OLT were HBV cirrhosis--10, HBV+HDV cirrhosis--4, HCV cirrhosis--11, HBV+HCV cirrhosis--2, biliary cirrhosis--5, Wilson disease--2, alcoholic cirrhosis--1, non-alcoholic liver disease--1, autoimmune cirrhosis--1. With three exceptions, in which the classical transplantation technique was used, the liver was grafted following the technique described by Belghiti. Local postoperative complications occurred in 15 patients (41%) and general complications in 17 (46%); late complications were registered in 18 patients (49%) and recurrence of the initial disease in 6 patients (16%). Intrao- and postoperative mortality was 8% (3/37). There were two patients (5%) who died because of immunosuppressive drug neurotoxicity at more than 30 days following LT. Four patients (11%) died lately because of PTLD, liver venoocclusive disease, recurrent autoimmune hepatitis and liver venoocclusive disease, myocardial infarction, respectively. Thirty-four patients survived the postoperative period (92%); according to Kaplan-Meier analysis, actuarial patient-survival rate at month 31 was 75%.

  18. Desensitization for ABO incompatible kidney transplantation: Experience of a single center in Brazil. ABO incompatible kidney transplantation

    Directory of Open Access Journals (Sweden)

    Maria Cristina Ribeiro Castro

    2017-12-01

    Objective: To analyze the patient and the graft survival of the first cohort of Brazilian patients receiving ABO-incompatible transplants. Patients and Methods: From October 2012 to June 2016, we performed 10 ABO incompatible kidney transplantation (KT procedures from a living donor. The desensitization protocol was based on rituximab and PP. All patients received induction with Thymoglobulin and long-term steroids. Tacrolimus and mycophenolate sodium were initiated at the time of desensitization and continued after the transplant. Pre-transplant agglutinin titers varied from 1/32 to 1/512. Five patients also presented anti-HLA specific antibodies, being three T and B positive FCXM at baseline. Results: After a mean follow-up of 30 ( ± 13 months, all patients are alive. One patient lost the graft due to cellular rejection that occurred after reduction of immunosuppressive therapy for an aggressive HPV-related vulvar cancer. The mean serum creatinine concentration is 1.4 ± 0.5 mg/dl. Three episodes of rejection occurred in 3 patients: two cellular and one anti-HLA mediated. Conclusion: Desensitization with Rituximab and PP allowed us to perform transplants from living donors to ABO incompatible recipients in a Brazilian population with good results, even in highly-sensitized patients and in those presenting high anti-ABO agglutinin titers.

  19. Outcome of deceased donor renal transplantation - A single-center experience from developing country

    Directory of Open Access Journals (Sweden)

    Himanshu V Patel

    2013-01-01

    Full Text Available Renal transplantation (RTx is considered as the best therapeutic modality for patient suffering from end-stage renal disease (ESRD. Dearth of donor kidneys is a major problem everywhere, and deceased donor renal transplantation (DDRTx is seen as at least a partial solution. Even so, DDRTx accounts for only less than 4% of RTx in India. We report our 6-year single-center experience on DDRTx vis-à-vis patient/graft survival, graft function in terms of serum creatinine (SCr, rejection episodes, and delayed graft function (DGF. Between January 2005 and March 2011, 236 DDRTx were performed. Majority of the donors were those with brain death due to road traffic/cerebrovascular accidents. The commonest recipient diseases leading to ESRD were chronic glomerulonephritis (42.8%, diabetes (12.7%, and hypertension (10.6%. Mean recipient age was 36.2 ± 14.2 years; 162 were males and 74 were females. Mean donor age was 45.3 ± 17.13 years; 144 were males and 92 were females. Mean dialysis duration pre-transplantation was 18.5 ± 2.5 months. All recipients received single-dose rabbit-anti-thymocyte globulin induction and steroids, calcinueurin inhibitor, and mycophenolate mofetil/azathioprine for maintenance immunosuppression. Delayed graft function was observed in 29.6% patients and 22% had biopsy-proven acute rejection. Over the mean follow-up of 2.18 ± 1.75 years, patient and graft survival rates were 74.57% and 86.8%, respectively, with mean SCr of 1.42 ± 0.66 mg%. DDRTx achieves acceptable graft function with patient/graft survival, encouraging the use of this approach in view of organ shortage.

  20. Contingencies of Value

    DEFF Research Database (Denmark)

    Strandvad, Sara Malou

    2014-01-01

    Based on a study of the admission test at a design school, this paper investigates the contingencies of aesthetic values as these become visible in assessment practices. Theoretically, the paper takes its starting point in Herrnstein Smith’s notion of ‘contingencies of values’ and outlines...... a pragmatist ground where cultural sociology and economic sociology meet. Informed by the literature on cultural intermediaries, the paper discusses the role of evaluators and the devices which accompany them. Whereas studies of cultural intermediaries traditionally apply a Bourdieusian perspective, recent......, the paper does not accept this storyline. As an alternative, the paper outlines the contingencies of values which are at play at the admission test, composed of official assessment criteria and scoring devices together with conventions within the world of design, and set in motion by interactions...

  1. 48 CFR 18.201 - Contingency operation.

    Science.gov (United States)

    2010-10-01

    ... 48 Federal Acquisition Regulations System 1 2010-10-01 2010-10-01 false Contingency operation. 18... METHODS AND CONTRACT TYPES EMERGENCY ACQUISITIONS Emergency Acquisition Flexibilities 18.201 Contingency operation. (a) Contingency operation is defined in 2.101. (b) Micro-purchase threshold. The threshold...

  2. Problems with Contingency Theory: Testing Assumptions Hidden within the Language of Contingency "Theory".

    Science.gov (United States)

    Schoonhoven, Clausia Bird

    1981-01-01

    Discusses problems in contingency theory, which relates organizational structure to the tasks performed and the information needed. Analysis of data from 17 hospitals suggests that traditional contingency theory underrepresents the complexity of relations among technological uncertainty, structure, and organizational effectiveness. (Author/RW)

  3. Optimal self-esteem is contingent: Intrinsic versus extrinsic and upward versus downward contingencies

    NARCIS (Netherlands)

    Vonk, R.; Smit, H.M.M.

    2012-01-01

    We argue that noncontingent, unconditional self-esteem is not optimal but defensive. We introduce the concept of intrinsic contingency, where self-esteem is affected by whether one's actions are self-congruent and conducive to personal growth. Whereas external contingencies, especially social and

  4. Heart transplant centers with multidisciplinary team show a higher level of chronic illness management - Findings from the International BRIGHT Study.

    Science.gov (United States)

    Cajita, Maan Isabella; Baumgartner, Eva; Berben, Lut; Denhaerynck, Kris; Helmy, Remon; Schönfeld, Sandra; Berger, Gabriele; Vetter, Christine; Dobbels, Fabienne; Russell, Cynthia L; De Geest, Sabina

    The objectives of this study were to: (1) explore the proportion of HTx centers that have a multidisciplinary team and (2) assess the relationship between multidisciplinarity and the level of chronic illness management (CIM). The International Society for Heart and Lung Transplantation (ISHLT) recommends a multidisciplinary approach in heart transplant (HTx) follow-up care but little is known regarding the proportion of HTx centers that meet this recommendation and the impact on patient care. HTx centers with a multidisciplinary team may offer higher levels of CIM, a care model that has the potential to improve outcomes after HTx. We conducted a secondary analysis of the BRIGHT study, a cross-sectional study in 11 countries. Multidisciplinarity in the 36 HTx centers was assessed through HTx director reports and was defined as having a team that was composed of physician(s), nurse(s), and another healthcare professional (either a social worker, psychiatrist, psychologist, pharmacist, dietician, physical therapist, or occupational therapist). CIM was assessed with the Patient Assessment of Chronic Illness Care (PACIC). Multiple linear regression assessed the relationship between multidisciplinarity and the level of CIM. Twenty-nine (80.6%) of the HTx centers had a multidisciplinary team. Furthermore, multidisciplinarity was significantly associated with higher levels of CIM (β = 5.2, P = 0.042). Majority of the HTx centers follows the ISHLT recommendation for a multidisciplinary approach. Multidisciplinarity was associated with CIM and point toward a structural factor that needs to be in place for moving toward CIM. Copyright © 2017 Elsevier Inc. All rights reserved.

  5. Contingency Contractor Optimization Phase 3 Sustainment Platform Requirements - Contingency Contractor Optimization Tool - Prototype

    Energy Technology Data Exchange (ETDEWEB)

    Durfee, Justin David [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Frazier, Christopher Rawls [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Bandlow, Alisa [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Gearhart, Jared Lee [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Jones, Katherine A. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2016-06-01

    Sandia National Laboratories (Sandia) is in Phase 3 Sustainment of development of a prototype tool, currently referred to as the Contingency Contractor Optimization Tool - Prototype (CCOTP), under the direction of OSD Program Support. CCOT-P is intended to help provide senior Department of Defense (DoD) leaders with comprehensive insight into the global availability, readiness and capabilities of the Total Force Mix. The CCOT-P will allow senior decision makers to quickly and accurately assess the impacts, risks and mitigating strategies for proposed changes to force/capabilities assignments, apportionments and allocations options, focusing specifically on contingency contractor planning. During Phase 2 of the program, conducted during fiscal year 2012, Sandia developed an electronic storyboard prototype of the Contingency Contractor Optimization Tool that can be used for communication with senior decision makers and other Operational Contract Support (OCS) stakeholders. Phase 3 used feedback from demonstrations of the electronic storyboard prototype to develop an engineering prototype for planners to evaluate. Sandia worked with the DoD and Joint Chiefs of Staff strategic planning community to get feedback and input to ensure that the engineering prototype was developed to closely align with future planning needs. The intended deployment environment was also a key consideration as this prototype was developed. Initial release of the engineering prototype was done on servers at Sandia in the middle of Phase 3. In 2013, the tool was installed on a production pilot server managed by the OUSD(AT&L) eBusiness Center. The purpose of this document is to specify the CCOT-P engineering prototype platform requirements as of May 2016. Sandia developed the CCOT-P engineering prototype using common technologies to minimize the likelihood of deployment issues. CCOT-P engineering prototype was architected and designed to be as independent as possible of the major deployment

  6. 48 CFR 218.201 - Contingency operation.

    Science.gov (United States)

    2010-10-01

    ... 48 Federal Acquisition Regulations System 3 2010-10-01 2010-10-01 false Contingency operation. 218... Flexibilities 218.201 Contingency operation. (1) Selection, appointment, and termination of appointment... in a contingency contracting force. See 201.603-2(2). (2) Policy for unique item identification...

  7. The Necessity of Contingency or Contingent Necessity: Meillassoux, Hegel, and the Subject

    Directory of Open Access Journals (Sweden)

    John Van Houdt

    2011-06-01

    Full Text Available This article addresses the relationship of contingency to necessity as developed by Quentin Meillassoux and G.W.F. Hegel. Meillassoux criticizes the restriction of possibility by modern philosophy to the conditions of the transcendental subject, which he calls ‘correlationism’, and opposes to this correlationism, mathematics as an absolute form of thought. The arch-figure of a metaphysical version of correlationism for Meillassoux is Hegel. This article argues that, while Meillassoux is right to criticize a version of correlationism for restricting the range of contingency, he overlooks Hegel’s unique contribution to this issue. Hegel provides us a version of necessity modeled on the mathematical proof which answers Meillassoux’s concerns about correlationist versions of necessity but does not altogether jettison the concept of the subject. Instead, the subject in Hegel is a contingent interruption which emerges from the breaks in the kinds of necessity we posit about the world. Hegel offers us a way of tying these two concepts together in what I call ‘contingent necessity’.

  8. 40 CFR 264.53 - Copies of contingency plan.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 25 2010-07-01 2010-07-01 false Copies of contingency plan. 264.53... Contingency Plan and Emergency Procedures § 264.53 Copies of contingency plan. A copy of the contingency plan... called upon to provide emergency services. [Comment: The contingency plan must be submitted to the...

  9. Pre-transplant history of mental health concerns, non-adherence, and post-transplant outcomes in kidney transplant recipients.

    Science.gov (United States)

    Gumabay, Franz Marie; Novak, Marta; Bansal, Aarushi; Mitchell, Margot; Famure, Olusegun; Kim, S Joseph; Mucsi, Istvan

    2018-02-01

    The association between pre-transplant mental health concerns and non-adherence and post-transplant outcomes after kidney transplantation is not fully established. We examined the relationship between a pre-transplant history of mental health concerns and non-adherence and post-transplant outcomes among kidney transplant recipients. In this retrospective single center cohort study of adult kidney transplant recipients (n=955) the associations between the history of mental health concerns or non-adherence and the time from kidney transplant to biopsy proven acute rejection; death-censored graft failure and total graft failure were examined using Cox proportional hazards models. Mean (SD) age was 51 (13) years, 61% were male and 27% had a history of diabetes. Twenty-two and 11% of patients had mental health concerns and non-adherence, respectively. Fifteen percent of the patients had acute rejection, 5.6% had death-censored graft failure and 13.0% had total graft failure. The history of mental health concerns was not associated with acute rejection, death-censored graft failure or total graft failure. Patients with versus without a history of non-adherence tended to have higher cumulative incidence of acute rejection (23.3% [95% CI: 16.1, 33.2] vs. 13.6% [95% CI: 11.4, 16.2]) and death-censored graft failure (15.0% [95% CI: 6.9, 30.8] vs. 6.4% [95% CI: 4.7, 8.7]) (log rank p=0.052 and p=0.086, respectively). These trends were not significant after multivariable adjustment. In summary, a history of pre-transplant mental health concerns or non-adherence is not associated with adverse outcomes in patients who completed transplant workup and received a kidney transplant. Copyright © 2018 Elsevier Inc. All rights reserved.

  10. Four decades of kidney transplantation in Cuba.

    Science.gov (United States)

    Alfonzo, Jorge P

    2013-01-01

    This article describes the background, beginnings, development, evolution and outcomes of kidney transplantation in Cuba. Nephrology as a medical specialty in Cuba began in 1962 and was formalized in 1966. Conditions were created to implement renal replacement therapy (including transplants), bring nephrology care to the entire country and train human resources who would assume this responsibility, making Cuba one of the first countries with a comprehensive program for renal patient care. After three unsuccessful cadaveric-donor kidney transplantations in 1968-69, the ensuing history of kidney transplantation can be summarized in the following three stages. 1970-1975: In January 1970, cadaveric-donor kidney transplantation began at the Nephrology Institute. That year, 17 kidney transplantations were performed; four of these patients lived with functional kidneys for 15-25 years; 10-year graft survival was 23.5% (Kaplan-Meier survival curve); HLA typing began in 1974. By December 1975, 170 grafts had been done in three hospitals. 1976-1985: Seven transplantation centers performed 893 grafts during this period. HLA-DR typing was introduced in 1976 and the National Histocompatibility Laboratory Network was founded in 1978. The first related living-donor kidney transplantation was done in 1979. 1986-2011: The National Kidney Transplantation Coordinating Center and the National Kidney Transplantation Program were created in 1986; the first combined kidney-pancreas transplantation was performed the same year. In 1990, cyclosporine and the Cuban monoclonal antibody IOR-T3 were introduced for immunosuppression to prevent rejection, as were other Cuban products (hepatitis B vaccine and recombinant human erythropoietin) for transplant patients. By December 2011, the cumulative number of transplants was 4636 (384 from related living donors). With over 40 years of experience, kidney transplantation is now well established in Cuba; it is free and universally accessible, on the

  11. Clinical Allogeneic and Autologous Islet Cell Transplantation: Update

    Directory of Open Access Journals (Sweden)

    Shinichi Matsumoto

    2011-06-01

    Full Text Available Islet cell transplantation is categorized as a β-cell replacement therapy for diabetic patients who lack the ability to secrete insulin. Allogeneic islet cell transplantation is for the treatment of type 1 diabetes, and autologous islet cell transplantation is for the prevention of surgical diabetes after a total pancreatectomy. The issues of allogeneic islet cell transplantation include poor efficacy of islet isolation, the need for multiple donor pancreata, difficulty maintaining insulin independence and undesirable side effects of immunosuppressive drugs. Those issues have been solved step by step and allogeneic islet cell transplantation is almost ready to be the standard therapy. The donor shortage will be the next issue and marginal and/or living donor islet cell transplantation might alleviate the issue. Xeno-islet cell transplantation, β-cell regeneration from human stem cells and gene induction of the naïve pancreas represent the next generation of β-cell replacement therapy. Autologous islet cell transplantation after total pancreatectomy for the treatment of chronic pancreatitis with severe abdominal pain is the standard therapy, even though only limited centers are able to perform this treatment. Remote center autologous islet cell transplantation is an attractive option for hospitals performing total pancreatectomies without the proper islet isolation facilities.

  12. 49 CFR 1542.301 - Contingency plan.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 9 2010-10-01 2010-10-01 false Contingency plan. 1542.301 Section 1542.301..., DEPARTMENT OF HOMELAND SECURITY CIVIL AVIATION SECURITY AIRPORT SECURITY Contingency Measures § 1542.301 Contingency plan. (a) Each airport operator required to have a security program under § 1542.103(a) and (b...

  13. Transplantation with positive complement-dependent microcytotoxicity crossmatch in contemporary kidney transplantation: Practice patterns and associated outcomes

    Directory of Open Access Journals (Sweden)

    Ralph J Graff

    2012-01-01

    Full Text Available We analyzed clinical factors and graft survival associated with complement-dependent microcytotoxicity (CDC crossmatch (XM positive (+ kidney transplants in 1995 to 2009 United Network of Sharing (UNOS registry data. CDCXM negative (- transplants were selected from centers and years in which at least one CDCXM+ transplant was performed at a given center in a given year. CDCXM+ and CDCXM- results were compared with bivariate and multivariate survival analysis. Our observations are as follows: (1 The risk of graft loss with CDCXM+ vs. CDCXM- results was markedly lower than the risk observed historically, e.g., living donor (LD-CDCXM+ absolute all-cause graft survival reductions were 0.7% at 24 hours (P=0.007, 2.9% at one year (P <0.0001, 3.7% at five years (P<0.0001; deceased donor (DD-CDCXM+ absolute graft survival reductions were 0.7% at 24 hours (P=0.02, 3.5% at one year (P <0.0001, 2.7% at five years (P=0.0009. On covariate adjustment, the only significant association of CDCXM+ vs. CDCXM- results was with one-year graft loss risk: LD aHR 1.44 (95% CI 1.05-1.96, DD aHR 1.33 (CI 1.10-1.61. (2 CDCXM+ transplantation was more commonly performed among groups disadvantaged with respect to transplant access, including sensitized, previously transplanted women and black recipients. (3 In CDCXM+ recipients, there was a high percentage of flow cytometry (FC XM- and autoXM+ results. After removing these groups, outcomes with CDCXM+ results were relatively good. (4 CDCXM+/FCXM+ vs. CDCXM-/FCXM- graft loss risk was observed only in LD recipients transplanted at centers performing fewer than 10 such transplants during the study period: 11.0% reduction (P<0.0001 and aHR of 2.86 (CI 1.18-6.94 at one year; 14.7% reduction (P<0.0001 and aHR of 1.77 (CI 0.88-3.58 at five years. Although using CDCXM+ as a contraindication to transplantation has been associated with virtual elimination of hyperacute rejection, the negative effect of a CDCXM+ in contemporary

  14. Portable EMG devices, Biofeedback and Contingent Electrical Stimulation applications in Bruxism

    DEFF Research Database (Denmark)

    Castrillon, Eduardo

    Portable EMG devices, Biofeedback and Contingent Electrical Stimulation applications in Bruxism Eduardo Enrique, Castrillon Watanabe, DDS, MSc, PhD Section of Orofacial Pain and Jaw Function, Department of Dentistry, Aarhus University, Aarhus, Denmark; Scandinavian Center for Orofacial Neuroscience...... Summary: Bruxism is a parafunctional activity, which involves the masticatory muscles and probably it is as old as human mankind. Different methods such as portable EMG devices have been proposed to diagnose and understand the pathophysiology of bruxism. Biofeedback / contingent electrical stimulation...... characteristics make it complicated to assess bruxism using portable EMG devices. The possibility to assess bruxism like EMG activity on a portable device made it possible to use biofeedback and CES approaches in order to treat / manage bruxism. The available scientific information about CES effects on bruxism...

  15. Changing Patterns of Foreigner Transplants in Korea and Overseas Organ Transplants Among Koreans.

    Science.gov (United States)

    Ahn, Hyung Joon; Kim, Hwi Won; Han, Miyeun; Jeon, Hee Jung; Kwon, Oh Jung; Ahn, Curie

    2018-02-01

    This study aimed to estimate the numbers of foreign patients seeking organ transplantation (OT) in Korea and to examine the relationship between the trend of deceased donors in Korea and number of Korean patients seeking OT overseas since 2000. Data on foreigners who received a transplant in Korea were obtained from the Korean Network for Organ Sharing. Data on overseas transplants were obtained from 42 transplant centers surveyed through transplant coordinators. A total of 336 foreigners underwent OT (kidney transplantation [KT], 174; liver transplantation [LT], 162) in Korea between 2006 and 2016. The Mongolians were the most common foreigners who undergo KTs (32%), followed by the Chinese (18%), Americans (9%), and Emiratis (7%). Among foreigners undergoing LTs, the most common country of origin was Mongolia (39%), followed by United Arab Emirates (23%), China (13%), and the United States (6%). A total of 2206 Korean patients underwent overseas OT (KT, 977; LT, 1229) between 2000 and 2016. In 97% of overseas KT cases (n = 942) and 98% (n = 1205) of overseas LT cases, the transplantations were performed in China. The relationship between the number of deceased donors in Korea and the number of overseas transplants after 2006 indicates a highly negative correlation. (ρ = -0.988, P tourism.

  16. ACCOUNTING FOR CONTINGENT CONSIDERATIONS IN BUSINESS COMBINATIONS

    Directory of Open Access Journals (Sweden)

    Gurgen KALASHYAN

    2017-07-01

    Full Text Available According to IFRS 3 Business Combinations contingent considerations must be included in the total consideration given for the acquired entity along with cash, other assets, ordinary or preference equity instruments, options, warrants. The contingent consideration is the determined amount which acquiring entity has to pay to acquired entity provided, that certain conditions will be fulfilled in the future. In case the provisions are not satisfied, we will get the situation when the amount of contingent consideration has been included in the total consideration given in the business combination, but in fact, the acquirer has not paid that amount. In its turn, the acquired entity will recognize the contingent consideration as a financial asset according to IFRS 9 Financial Instruments. In that case, it would be appropriately to recognize the contingent consideration as a contingent asset applying IAS 37. In the Article the author will explore the challenges of contingent consideration accounting and suggest the ways of solving the above mentioned problems.

  17. Organ acquisition cost centers Part I: medicare regulations--truth or consequence.

    Science.gov (United States)

    Abecassis, M

    2006-12-01

    Organ Acquisition Cost Centers (OACC) were designed to encourage and incentivize hospitals to provide transplantation services. The purpose of this article (Part I) is to familiarize transplant professionals and transplant center administrators with the regulations that govern OACC. An historical perspective of the evolution of these regulations is necessary to better understand the basic principles underlying this complex area of transplant finance. There is a wide variation in transplant center OACC reporting, suggesting under-reporting by some and overreporting by others. Correct reporting is essential since OACC are auditable. We have surveyed 13 audits by the Office of the Inspector General (OIG) of transplant center OACC in an attempt to identify trends in reporting practices by transplant centers that are not deemed acceptable by the OIG. We discuss these findings in the context of some basic definitions that refer specifically to cost accounting principles necessary for accurate reporting of OACC.

  18. Contingency management: perspectives of Australian service providers.

    Science.gov (United States)

    Cameron, Jacqui; Ritter, Alison

    2007-03-01

    Given the very positive and extensive research evidence demonstrating efficacy and effectiveness of contingency management, it is important that Australia explore whether contingency management has a role to play in our own treatment context. Qualitative interviews were conducted with 30 experienced alcohol and drug practitioners, service managers and policy-makers in Victoria. Interviewees were selected to represent the range of drug treatment services types and included rural representation. A semi-structured interview schedule, covering their perceptions and practices of contingency management was used. All interviews were transcribed verbatim and analysed using N2 qualitative data analysis program. The majority of key informants were positively inclined toward contingency management, notwithstanding some concerns about the philosophical underpinnings. Concerns were raised in relation to the use of monetary rewards. Examples of the use of contingency management provided by key informants demonstrated an over-inclusive definition: all the examples did not adhere to the key principles of contingency management. This may create problems if a structured contingency management were to be introduced in Australia. Contingency management is an important adjunctive treatment intervention and its use in Australia has the potential to enhance treatment outcomes. No unmanageable barriers were identified in this study.

  19. Parathyroid hormone in renal transplanted recipients; a single center study

    Directory of Open Access Journals (Sweden)

    Nasri Hamid

    2013-01-01

    Full Text Available This investigation, aimed to study of intact parathormone (iPTH and calcium (Ca in a group of kidney transplanted patients and also we aimed to test the relationship of iPTH with various demographic data of kidney transplanted recipients. We studied 72 kidney transplanted persons with mean ages of 44±12 years. In this study, mean iPTH was 18.4±8.2 Pg/mL (median=16.5. A negative correlation of iPTH with creatinine clearance (r=-0.44, p0.05. In contrast to previous findings, in our patients, there was not secondary hyperparathyroidism. The results revealed suppressed PTH secretion. The reason may be due to excessive intake of calcium and Vitamin D analogues, which may suppress parathyroid hormone secretion.

  20. Pediatric renal transplant practices in India.

    Science.gov (United States)

    Sethi, Sidharth Kumar; Sinha, Rajiv; Rohatgi, Smriti; Kher, Vijay; Iyengar, Arpana; Bagga, Arvind

    2017-05-01

    Limited access to tertiary-level health care, limited trained pediatric nephrologists and transplant physicians, lack of facilities for dialysis, lack of an effective deceased donor program, non-affordability, and non-adherence to immunosuppressant drugs poses a major challenge to universal availability of pediatric transplantation in developing countries. We present the results of a survey which, to the best of our knowledge, is the first such published attempt at understanding the current state of pediatric renal transplantation in India. A designed questionnaire formulated by a group of pediatric nephrologists with the aim of understanding the current practice of pediatric renal transplantation was circulated to all adult and pediatric nephrologists of the country. Of 26 adult nephrologists who responded, 16 (61.5%) were involved in pediatric transplantation, and 10 of 15 (66.6%) pediatric nephrologists were involved in pediatric transplantation. Most of the centers doing transplants were private/trust institution with only three government institutions undertaking it. Induction therapy was varied among pediatric and adult nephrologists. There were only a few centers (n=5) in the country routinely doing >5 transplants per year. Preemptive transplants and protocol biopsies were a rarity. The results demonstrate lower incidence of undertaking pediatric transplants in children below 6 years, paucity of active cadaveric programs and lack of availability of trained pediatric nephrologists and staff. In contrast to these dissimilarities, the immunosuppressant use seems to be quite similar to Western registry data with majority favoring induction agent and triple immunosuppressant (steroid, mycophenolate mofetil and tacrolimus) for maintenance. The survey also identifies major concerns in availability of this service to all regions of India as well as to all economic segments. © 2017 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  1. Rituximab: An emerging therapeutic agent for kidney transplantation

    Directory of Open Access Journals (Sweden)

    Joseph Kahwaji

    2009-10-01

    Full Text Available Joseph Kahwaji, Chris Tong, Stanley C Jordan, Ashley A VoComprehensive Transplant Center, Transplant immunology Laboratory, HLA Laboratory, Cedars-Sinai Medical Center, Los Angeles, CA, USAAbstract: Rituximab (anti-CD20, anti-B-cell is now emerging as an important drug for modification of B-cell and antibody responses in solid-organ transplant recipients. Its uses are varied and range from facilitating desensitization and ABO blood group-incompatible transplantation to the treatment of antibody-mediated rejection (AMR, post-transplant lymphoproliferative disorder (PTLD, and recurrent glomerular diseases in the renal allograft. Despite these uses, prospective randomized trials are lacking. Only case reports exist in regards to its use in de novo and recurrent diseases in the renal allograft. Recent reports suggests that the addition of rituximab to intravenous immunoglobulin (IVIG may have significant benefits for desensitization and treatment of AMR and chronic rejection. Current dosing recommendations are based on data from United States Food and Drug Administration-approved indications for treatment of B-cell lymphomas and rheumatoid arthritis. From the initial reported experience in solid organ transplant recipients, the drug is well tolerated and not associated with increased infectious risks. However, close monitoring for viral infections is recommended with rituximab use. The occurrence of progressive multifocal leukoencephalopathy (PML has been reported with rituximab use. However, this is rare and not reported in the renal transplant population. Here we will review current information regarding the effectiveness of rituximab as an agent for desensitization of highly human leukocyte antigen-sensitized and ABO-incompatible transplant recipients and its use in treatment of AMR. In addition, the post-transplant use of rituximab for treatment of PTLD and for recurrent and de novo glomerulonephritis in the allograft will be discussed. In

  2. Alternative Forms of Fit in Contingency Theory.

    Science.gov (United States)

    Drazin, Robert; Van de Ven, Andrew H.

    1985-01-01

    This paper examines the selection, interaction, and systems approaches to fit in structural contingency theory. The concepts of fit evaluated may be applied not only to structural contingency theory but to contingency theories in general. (MD)

  3. Changing indications and techniques for corneal transplantations at a tertiary referral center in Turkey, from 1995 to 2014

    Directory of Open Access Journals (Sweden)

    Altay Y

    2016-06-01

    Full Text Available Yesim Altay, Ayse Burcu, Gozde Aksoy, Evin Singar Ozdemir, Firdevs Ornek Department of Ophthalmology, Ankara Training and Research Hospital, Ankara, Turkey Background: Indications for corneal transplantation in developed and developing nations differ according to the different spectrum of corneal disease in each country. Objective: The purpose of this study is to analyze the changing indications and surgical techniques for corneal transplantation over the past 20 years at a tertiary referral center in Turkey. Methods: We retrospectively reviewed the records of patients who underwent keratoplasty from January 1995 to December 2014 (between 1995 and 2004, period 1, and between 2005 and 2014, period 2. Patients’ demographic data, indications for corneal transplantation, and the type of surgery were recorded. Results: The number of keratoplasties performed ranged from 548 in period 1 to 782 in period 2. Between 1995 and 2004, the leading indications were keratoconus (34.1%, bullous keratopathy (17%, and non-herpetic corneal scar (13.3%, and between 2005 and 2014, they were keratoconus (33.8%, corneal stromal dystrophy (14.2%, and bullous keratopathy (12.7%. All the keratoplasties performed in the 1995–2004 period were penetrating keratoplasty (PKP. During the period 2005–2014, PKP accounted for 93%, automated lamellar keratoplasty 5.8%, and deep anterior lamellar keratoplasty 1.2% of all corneal transplantations. Conclusion: Keratoconus was the leading indication for keratoplasty in both periods. In the 2005–2014 period, corneal stromal dystrophy increased significantly. All the keratoplasties performed in period 1 and 93% of all keratoplasties performed in period 2 were PKP. Keywords: corneal transplantation, indication, keratoconus, keratoplasty technique, pene­trating keratoplasty

  4. Appendix F - Sample Contingency Plan

    Science.gov (United States)

    This sample Contingency Plan in Appendix F is intended to provide examples of contingency planning as a reference when a facility determines that the required secondary containment is impracticable, pursuant to 40 CFR §112.7(d).

  5. Curative Intent Treatment of Hepatocellular Carcinoma - 844 Cases Treated in a General Surgery and Liver Transplantation Center.

    Science.gov (United States)

    Grigorie, Răzvan; Alexandrescu, Sorin; Smira, Gabriela; Ionescu, Mihnea; Hrehoreţ, Doina; Braşoveanu, Vladislav; Dima, Simona; Ciurea, Silviu; Boeţi, Patricia; Dudus, Ionut; Picu, Nausica; Zamfir, Radu; David, Leonard; Botea, Florin; Gheorghe, Liana; Tomescu, Dana; Lupescu, Ioana; Boroş, Mirela; Grasu, Mugur; Dumitru, Radu; Toma, Mihai; Croitoru, Adina; Herlea, Vlad; Pechianu, Cătălin; Năstase, Anca; Popescu, Irinel

    2017-01-01

    Background: The objective of this study is to assess the outcome of the patients treated for hepatocellular carcinoma (HCC) in a General Surgery and Liver Transplantation Center. Methods: This retrospective study includes 844 patients diagnosed with HCC and surgically treated with curative intent methods. Curative intent treatment is mainly based on surgery, consisting of liver resection (LR), liver transplantation (LT). Tumor ablation could become the choice of treatment in HCC cases not manageable for surgery (LT or LR). 518 patients underwent LR, 162 patients benefited from LT and in 164 patients radiofrequency ablation (RFA) was performed. 615 patients (73%) presented liver cirrhosis. Results: Mordidity rates of patient treated for HCC was 30% and mortality was 4,3% for the entire study population. Five year overall survival rate was 39 % with statistically significant differences between transplanted, resected, or ablated patients (p 0.05) with better results in case of LT followed by LR and RFA. Conclusions: In HCC patients without liver cirrhosis, liver resection is the treatment of choice. For early HCC occurred on cirrhosis, LT offers the best outcome in terms of overall and disease free survival. RFA colud be a curative method for HCC patients not amenable for LT of LR. Celsius.

  6. ORGAN DONATION AND TRANSPLANTATION IN THE RUSSIAN FEDERATION IN 2014 7th REPORT OF NATIONAL REGISTER

    Directory of Open Access Journals (Sweden)

    S. V. Gautier

    2015-01-01

    Full Text Available Aim. To carry out monitoring of the organization and development of organ donation and transplantation in the Russian Federation according to 2014. Materials and methods. Questioning of heads of all the centers of transplantation is carried out. The comparative analysis of the obtained data in dynamics of years, between certain regions of the Russian Federation, the transplantation centers, and also with data of the international registers is made. Results. According to the Register in 2014 in the Russian Federation functioned 36 centers of kidney transplantation, 14 centers of liver transplantation and 9 centers of heart transplantation. The waiting list of kidney transplantation in 2014 included 4636 potential recipients that makes 16% of total number of the patients 29 000 receiving dialysis. The rate of donor activity in 2014 made 3.2 per million population (pmp. Efficiency of donor programs in 2014 continued to increase: the share of effective donors after brain death in 2014 increased to 77.2%, the share of multiorgan explantation made 50.5%, average number of organs received from one effective donor made 2.6. In 2014 the rate of kidney transplantation made 7.0 pmp, the rate of liver transplantation made 2.1 pmp and the rate of heart transplantation made 1.1 pmp. In the Russian Federation the number of transplantations of liver and heart continues to increase. The significant contribution to development of the organ donation and transplantation brings the Moscow region in which 11 centers of transplantation function and nearly a half from all kidney transplantations and more than 65% of all liver and heart transplantations are carried out. Conclusion. In theRussian Federation the potential for further development of the transplantology remains. In particular, at the expense of increase in the efficiency of regional donation programs, introduction of technologies, expansion of the practices of multiorgan donation and transplantations of

  7. A least square support vector machine-based approach for contingency classification and ranking in a large power system

    Directory of Open Access Journals (Sweden)

    Bhanu Pratap Soni

    2016-12-01

    Full Text Available This paper proposes an effective supervised learning approach for static security assessment of a large power system. Supervised learning approach employs least square support vector machine (LS-SVM to rank the contingencies and predict the system severity level. The severity of the contingency is measured by two scalar performance indices (PIs: line MVA performance index (PIMVA and Voltage-reactive power performance index (PIVQ. SVM works in two steps. Step I is the estimation of both standard indices (PIMVA and PIVQ that is carried out under different operating scenarios and Step II contingency ranking is carried out based on the values of PIs. The effectiveness of the proposed methodology is demonstrated on IEEE 39-bus (New England system. The approach can be beneficial tool which is less time consuming and accurate security assessment and contingency analysis at energy management center.

  8. Laparoscopic cholecystectomy in a cardiac transplant recipient.

    Science.gov (United States)

    Pandya, Seema R; Paranjape, Saloni

    2014-04-01

    An increasing number of cardiac transplants are being carried out around the world. With increasing longevity, these patients present a unique challenge to non-transplant anesthesiologists for a variety of transplant related or incidental surgeries. The general considerations related to a cardiac transplant recipient are the physiological and pharmacological problems of allograft denervation, the side-effects of immunosuppression, the risk of infection and the potential for rejection. A thorough understanding of the physiology of a denervated heart, need for direct vasoactive agents and post-transplant morbidities is essential in anesthetic management of such a patient. Here, we describe a case of a heart transplant recipient who presented for a cholecystectomy at our center.

  9. Thevenin Equivalent Method for Dynamic Contingency Assessment

    DEFF Research Database (Denmark)

    Møller, Jakob Glarbo; Jóhannsson, Hjörtur; Østergaard, Jacob

    2015-01-01

    A method that exploits Thevenin equivalent representation for obtaining post-contingency steady-state nodal voltages is integrated with a method of detecting post-contingency aperiodic small-signal instability. The task of integrating stability assessment with contingency assessment is challenged...... by the cases of unstable post-contingency conditions. For unstable postcontingency conditions there exists no credible steady-state which can be used for basis of a stability assessment. This paper demonstrates how Thevenin Equivalent methods can be applied in algebraic representation of such bifurcation...... points which may be used in assessment of post-contingency aperiodic small-signal stability. The assessment method is introduced with a numeric example....

  10. Yampa River Valley sub-area contingency plan

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-08-01

    The Yampa River Valley sub-area contingency plan (Contingency Plan) has been prepared for two counties in northwestern Colorado: Moffat County and Routt County. The Contingency Plan is provided in two parts, the Contingency Plan and the Emergency Response Action Plan (ERAP). The Contingency Plan provides information that should be helpful in planning to minimize the impact of an oil spill or hazardous material incident. It contains discussions of planning and response role, hazards identification, vulnerability analysis, risk analysis, cleanup, cost recovery, training, and health and safety. It includes information on the incident command system, notifications, response capabilities, emergency response organizations, evacuation and shelter-in-place, and immediate actions.

  11. 40 CFR 265.54 - Amendment of contingency plan.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 25 2010-07-01 2010-07-01 false Amendment of contingency plan. 265.54... DISPOSAL FACILITIES Contingency Plan and Emergency Procedures § 265.54 Amendment of contingency plan. The contingency plan must be reviewed, and immediately amended, if necessary, whenever: (a) Applicable regulations...

  12. 40 CFR 264.54 - Amendment of contingency plan.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 25 2010-07-01 2010-07-01 false Amendment of contingency plan. 264.54 Section 264.54 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) SOLID WASTES... Contingency Plan and Emergency Procedures § 264.54 Amendment of contingency plan. The contingency plan must be...

  13. Cytomegalovirus Disease in Renal Transplant Recipients: A Single-Center Experience

    OpenAIRE

    Bhadauria, Dharmendra; Sharma, R. K.; Kaul, A.; Prasad, Narayan; Gupta, Amit; Gupta, Anurag; Srivastava, Aneesh

    2012-01-01

    Cytomegalovirus (CMV) is the most common viral infection following kidney transplant, has been recognized as a major factor for graft loss and increased incidence of acute rejection. Different studies have reported a variable incidence of CMV disease with the use of Mycophenolate mofetil (MMF). We retrospectively analyzed our renal transplant recipients to review the results of CMV disease and to compare CMV disease in patient on Azathioprine and MMF for this purpose we retrospectively review...

  14. Clinical intestinal transplantation: a decade of experience at a single center.

    Science.gov (United States)

    Abu-Elmagd, K; Reyes, J; Bond, G; Mazariegos, G; Wu, T; Murase, N; Sindhi, R; Martin, D; Colangelo, J; Zak, M; Janson, D; Ezzelarab, M; Dvorchik, I; Parizhskaya, M; Deutsch, M; Demetris, A; Fung, J; Starzl, T E

    2001-09-01

    To assess the long-term efficacy of intestinal transplantation under tacrolimus-based immunosuppression and the therapeutic benefit of newly developed adjunct immunosuppressants and management strategies. With the advent of tacrolimus in 1990, transplantation of the intestine began to emerge as therapy for intestinal failure. However, a high risk of rejection, with the consequent need for acute and chronic high-dose immunosuppression, has inhibited its widespread application. During an 11-year period, divided into two segments by a 1-year moratorium in 1994, 155 patients received 165 intestinal allografts under immunosuppression based on tacrolimus and prednisone: 65 intestine alone, 75 liver and intestine, and 25 multivisceral. For the transplantations since the moratorium (n = 99), an adjunct immunosuppressant (cyclophosphamide or daclizumab) was used for 74 transplantations, adjunct donor bone marrow was given in 39, and the intestine of 11 allografts was irradiated with a single dose of 750 cGy. The actuarial survival rate for the total population was 75% at 1 year, 54% at 5 years, and 42% at 10 years. Recipients of liver plus intestine had the best long-term prognosis and the lowest risk of graft loss from rejection (P =.001). Since 1994, survival rates have improved. Techniques for early detection of Epstein-Barr and cytomegaloviral infections, bone marrow augmentation, the adjunct use of the interleukin-2 antagonist daclizumab, and most recently allograft irradiation may have contributed to the better results. The survival rates after intestinal transplantation have cumulatively improved during the past decade. With the management strategies currently under evaluation, intestinal transplant procedures have the potential to become the standard of care for patients with end-stage intestinal failure.

  15. Network location theory and contingency planning

    Energy Technology Data Exchange (ETDEWEB)

    Hakimi, S L

    1983-08-01

    A brief survey of results in network location theory is first presented. Then, a systems view of contingency planning is described. Finally, some results in location theory are re-examined and it is shown that they are motivated by contingency planning considerations. Some new issues and problems in location theory are described, which, if properly tackled, will have a substantial impact on contingency planning in transportation.

  16. Prevalence and correlates of medication non-adherence among kidney transplant recipients more than 6 months post-transplant: a cross-sectional study

    OpenAIRE

    Weng, Francis L; Chandwani, Sheenu; Kurtyka, Karen M; Zacker, Christopher; Chisholm-Burns, Marie A; Demissie, Kitaw

    2013-01-01

    Background Among kidney transplant recipients, non-adherence with immunosuppressive medications frequently precedes allograft loss. We sought to determine the prevalence and correlates of medication non-adherence among kidney transplant recipients. Methods We performed a single-center, cross-sectional study of kidney transplant recipients who were at least 6 months post-transplant. We measured self-reported adherence using the Immunosuppressive Therapy Adherence Scale (ITAS, which is scored f...

  17. Getting help quickly: older people and community worker perspectives of contingency planning for falls management.

    Science.gov (United States)

    Charlton, Kimberly; Murray, Carolyn M; Kumar, Saravana

    2018-01-01

    Older people living in the community need to plan for getting help quickly if they have a fall. In this paper planning for falls is referred to as contingency planning and is not a falls prevention strategy but rather a falls management strategy. This research explored the perspectives of older people and community workers (CWs) about contingency planning for a fall. Using a qualitative descriptive approach, participants were recruited through a community agency that supports older people. In-depth interviews were conducted with seven older people (67-89 years of age) and a focus group was held with seven workers of mixed disciplines from the same agency. Older people who hadn't fallen were included but were assumed to be at risk of falls because they were in receipt of services. Thematic analysis and concept mapping combined the data from the two participant groups. Four themes including preconceptions about planning ahead for falling, a fall changes perception, giving, and receiving advice about contingency plans and what to do about falling. Both CWs and older people agree contingency planning requires understanding of individual identity and circumstances. CWs have limited knowledge about contingency planning and may be directive, informative, or conservative. Implications for Rehabilitation Falls can result in serious consequences for older people. There is an evidence-practice gap as availability of and access to contingency planning does not necessarily mean older people will use it in a falls emergency. Older people prefer community workers to be directive or informative about contingency planning options but they do want choice and control. Increased community workers knowledge of, and collaborative decision-making about, contingency planning may promote patient-centered services and assist in closing the evidence-practice gap.

  18. Evaluation of non-adherence in patients undergoing dialysis and kidney transplantation: United States transplantation practice patterns survey.

    Science.gov (United States)

    Brar, A; Babakhani, A; Salifu, M O; Jindal, R M

    2014-06-01

    We performed a survey of United States transplantation centers to evaluate practice patterns in the assessment of nonadherence before and after kidney transplantation. An electronically administered, anonymous survey was sent to 181 United Network for Organ Sharing (UNOS) approved transplantation centers in 2012. Seventy-nine centers completed our survey. Of them, 51.3% had a protocol to evaluate medication/dialysis adherence before the listing; most common (36.4%) was the Simplified Medication Adherence Questionnaire. As an alternative to a questionnaire, the most common measure of nonadherence was the number of missed hemodialysis sessions (77.0%). The most common reason for poor adherence to dialysis regimens was difficulty with transportation (81.3%). Also, 94.4% noted the lack of a questionnaire to evaluate adherence to medications but relied on drug levels (73.4%) and self report. Only 12.9% used a questionnaire for the measurement of quality of life (Karnofsky performance scale). Of the participating centers, 27.1% used a formal cognitive testing for potential living donors. A social worker was used by most centers for nonadherent patients. Respondents indicated that patients (in the pretransplantation state) were more compliant with dialysis than with medication regimens. Finally, 37.7% of respondents noted graft failure due to medication nonadherence in 15% to 29% of their patients. There was a significant variability in the methods of screening for nonadherence while the patient was on dialysis, during pretransplantation work up, and during post-transplantation follow-up examinations. We recommend that there should be a standardized technique to evaluate nonadherence to facilitate focused clinical trials to improve adherence. Copyright © 2014 Elsevier Inc. All rights reserved.

  19. Outcomes of Highly Sensitized Patients Undergoing Simultaneous Liver and Kidney Transplantation: A Single-Center Experience With Desensitization.

    Science.gov (United States)

    Steggerda, J A; Kang, A; Pan, S-H; Sundaram, V; Nissen, N N; Klein, A S; Todo, T; Annamalai, A; Vo, A; Jordan, S C; Kim, I K

    Preformed donor-specific human leukocyte antigen antibodies (DSAs) in patients undergoing simultaneous liver and kidney transplantation (SLKT) are an independent risk factor for poorer patient and renal allograft survival. The outcomes of patients highly sensitized (HS) against HLA antigens undergoing SLKT and select HS SLKT recipients undergoing desensitization at a high-volume desensitization center were investigated. Seventy-five patients undergoing SLKT at a high-volume desensitization center between January 1, 2001, and December 31, 2015, were retrospectively reviewed. HS patients were defined by panel-reactive antibody (PRA) >30% (n = 17 patients), 11 of whom received pre- or perioperative desensitization with high-dose intravenous immunoglobulin (IVIG) ± rituximab. HS patients had significantly higher class I and class II PRA (class I = 41.3% ± 40.0% vs 2.5% ± 6.3%; class II = 45.7% ± 36.4% vs 1.0% ± 2.9%; P Desensitization in select HS SLKT patients was well tolerated but did not improve patient and allograft survival or significantly curtail rejection. HS SLKT recipients demonstrated increased allograft rejection, particularly CMR, but patient and graft survival were not impacted in the first year post-transplant. Select HS SLKT patients tolerated desensitization with high-dose IVIG ± rituximab and may have received additional immunoprotection against ABMR but survival was not affected. Copyright © 2017 Elsevier Inc. All rights reserved.

  20. A practical approach to anaesthesia for paediatric liver transplantation

    African Journals Online (AJOL)

    Adele

    REVIEW. Introduction. The first liver transplant in children was performed by Starzl in ... program has performed 79 transplants in 76 patients with ... Paediatric liver transplantation in South Africa, up until the present time, has been centered at the Red Cross Children's Hospital ..... infrahepatic connections (i.e. steps 1 and 2).

  1. 30 CFR 218.152 - Fishermen's Contingency Fund.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 2 2010-07-01 2010-07-01 false Fishermen's Contingency Fund. 218.152 Section 218.152 Mineral Resources MINERALS MANAGEMENT SERVICE, DEPARTMENT OF THE INTERIOR MINERALS REVENUE..., Offshore § 218.152 Fishermen's Contingency Fund. Upon the establishment of the Fishermen's Contingency Fund...

  2. 40 CFR 265.53 - Copies of contingency plan.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 25 2010-07-01 2010-07-01 false Copies of contingency plan. 265.53... DISPOSAL FACILITIES Contingency Plan and Emergency Procedures § 265.53 Copies of contingency plan. A copy of the contingency plan and all revisions to the plan must be: (a) Maintained at the facility; and (b...

  3. Vascular complications following 1500 consecutive living and cadaveric donor renal transplantations: A single center study

    International Nuclear Information System (INIS)

    Salehipour, Mehdi; Salahi, Heshmatollah; Jalaeian, Hamed; Bahador, Ali; Nikeghbalian, Saman; Barzideh, Ehsan; Ariafar, Ali; Malek-Hosseini, Seyed Ali

    2009-01-01

    The aim of this study was to document vascular complications that occurred following cadaveric and living donor kidney transplants in order to assess the overall incidence of these complications at our center as well as to identify possible risk factors. In a retrospective cohort study, 1500 consecutive renal transplant recipients who received a living or cadaveric donor kidney between December 1988 and July 2006 were evaluated. The study was performed at the Nemazee Hospital, Shiraz, Iran. The assessment of the anatomy and number of renal arteries as well as the incidence of vascular complications was made by color doppler ultrasonography, angiography, and/or surgical exploration. Clinically apparent vascular complications were seen in 8.86% of all study patients (n = 133) with the most frequent being hemorrhage (n = 91; 6.1%) followed by allograft renal artery stenosis (n = 26; 1.7%), renal artery thrombosis (n = 9; 0.6%), and renal vein thrombosis (n = 7; 0.5%). Vascular complications were more frequent in recipients of cadaveric organs than recipients of allografts from living donors (12.5% vs. 7.97%; P0.017). The occurrence of vascular complications was significantly more frequent among recipients of renal allografts with multiple arteries when compared with recipients of kidneys with single artery (12.3% vs. 8.2%; P0.033). The same was true to venous complications as well (25.4% vs. 8.2%; P< 0.001). Our study shows that vascular complications were more frequent in allografts with multiple renal blood vessels. Also, the complications were much less frequent in recipients of living donor transplants. (author)

  4. O doador marginal: experiência de um centro de transplante de fígado The marginal donor: a single-center experience in orthotopic liver transplantation

    Directory of Open Access Journals (Sweden)

    Olival Cirilo Lucena da Fonseca-Neto

    2008-03-01

    Full Text Available RACIONAL: Desde que o uso de enxertos marginais é solução aceita para escassez de órgãos para transplante, ele tornou-se muito comum em todo mundo e a literatura vem mostrando efetividade desses enxertos no transplante de fígado. OBJETIVO: Apresentar a experiência do Serviço de Transplante Hepático do Hospital Universitário Oswaldo Cruz, em transplante de fígado com o uso de doadores marginais. MÉTODOS: Estudo retrospectivo em 137 transplantes ortotópicos de fígado, usando enxertos marginais entre 1999 e 2006, com acompanhamento mínimo de 180 dias. Os receptores foram classificados de acordo com a função inicial do enxerto no pós-operatório como normal (FN e disfunção primária (DP. RESULTADOS: Não foi observada diferença estatisticamente significante entre os grupos FN e DP com os seguintes parâmetros dos doadores: idade, sódio sérico, tempo de protrombina, esteatose hepática, transaminases sérica, pressão sanguínea, drogas vasoativas, índice de massa corpórea, parada cardíaca antes da doação de órgão, doador em assistolia e tempo de isquemia quente. Análise da curva de sobrevida (Kaplan-Meier de pacientes e de enxertos de fígado de pacientes que receberam fígado de doadores ideais versus doadores marginais não mostrou diferença com significância estatística. CONCLUSÃO: Pode ser recomendado o uso de enxertos marginais para transplantes hepáticos, inclusive os provenientes de doadores com o coração parado.BACKGROUND: Since marginal grafts are a solution to deal with the shortage of organ donors, its use became more common worldwide, and the literature had shown its effectiveness in the liver transplantation (LT outcomes. AIM: To present a single center experience, at the Liver Transplantation Unit of Oswaldo Cruz University Hospital, with orthotopic LT using marginal organ donors. METHODS: Retrospectivety review of 137 orthotopic LT using marginal grafts between 1999 and 2006, with a minimum 180

  5. Equilibria of perceptrons for simple contingency problems.

    Science.gov (United States)

    Dawson, Michael R W; Dupuis, Brian

    2012-08-01

    The contingency between cues and outcomes is fundamentally important to theories of causal reasoning and to theories of associative learning. Researchers have computed the equilibria of Rescorla-Wagner models for a variety of contingency problems, and have used these equilibria to identify situations in which the Rescorla-Wagner model is consistent, or inconsistent, with normative models of contingency. Mathematical analyses that directly compare artificial neural networks to contingency theory have not been performed, because of the assumed equivalence between the Rescorla-Wagner learning rule and the delta rule training of artificial neural networks. However, recent results indicate that this equivalence is not as straightforward as typically assumed, suggesting a strong need for mathematical accounts of how networks deal with contingency problems. One such analysis is presented here, where it is proven that the structure of the equilibrium for a simple network trained on a basic contingency problem is quite different from the structure of the equilibrium for a Rescorla-Wagner model faced with the same problem. However, these structural differences lead to functionally equivalent behavior. The implications of this result for the relationships between associative learning, contingency theory, and connectionism are discussed.

  6. 50 CFR 296.3 - Fishermen's contingency fund.

    Science.gov (United States)

    2010-10-01

    ... 50 Wildlife and Fisheries 7 2010-10-01 2010-10-01 false Fishermen's contingency fund. 296.3... ADMINISTRATION, DEPARTMENT OF COMMERCE CONTINENTAL SHELF FISHERMEN'S CONTINGENCY FUND § 296.3 Fishermen's contingency fund. (a) General. There is established in the Treasury of the United States the Fishermen's...

  7. Motor contingency learning and infants with Spina Bifida.

    Science.gov (United States)

    Taylor, Heather B; Barnes, Marcia A; Landry, Susan H; Swank, Paul; Fletcher, Jack M; Huang, Furong

    2013-02-01

    Infants with Spina Bifida (SB) were compared to typically developing infants (TD) using a conjugate reinforcement paradigm at 6 months-of-age (n = 98) to evaluate learning, and retention of a sensory-motor contingency. Analyses evaluated infant arm-waving rates at baseline (wrist not tethered to mobile), during acquisition of the sensory-motor contingency (wrist tethered), and immediately after the acquisition phase and then after a delay (wrist not tethered), controlling for arm reaching ability, gestational age, and socioeconomic status. Although both groups responded to the contingency with increased arm-waving from baseline to acquisition, 15% to 29% fewer infants with SB than TD were found to learn the contingency depending on the criterion used to determine contingency learning. In addition, infants with SB who had learned the contingency had more difficulty retaining the contingency over time when sensory feedback was absent. The findings suggest that infants with SB do not learn motor contingencies as easily or at the same rate as TD infants, and are more likely to decrease motor responses when sensory feedback is absent. Results are discussed with reference to research on contingency learning in infants with and without neurodevelopmental disorders, and with reference to motor learning in school-age children with SB.

  8. Solid organ transplantation after allogeneic hematopoietic stem cell transplantation: a retrospective, multicenter study of the EBMT

    DEFF Research Database (Denmark)

    Koenecke, C; Hertenstein, B; Schetelig, J

    2010-01-01

    To analyze the outcome of solid organ transplantation (SOT) in patients who had undergone allogeneic hematopoietic stem cell transplantation (HSCT), a questionnaire survey was carried out within 107 European Group of Blood and Marrow Transplantation centers. This study covered HSCT between 1984...... for underlying malignant diseases was 4% at 5 years (95% CI, 0% to 12%). In summary, this study shows that selected patients receiving SOT after HSCT have a remarkably good overall and organ survival. These data indicate that SOT should be considered in selected patients with single organ failure after HSCT....

  9. Comparison of long-term outcomes between spousal transplants and other living unrelated donor transplants: single-center experience.

    Science.gov (United States)

    Yoon, Hye Eun; Song, Joon Chang; Hyoung, Bok Jin; Hwang, Hyeon Seok; Lee, So Young; Jeon, Youn Joo; Park, Sun Cheol; Choi, Bum Soon; Kim, Yong Soo; Moon, In Sung; Yang, Chul Woo

    2009-01-01

    The greater use of living unrelated donors (LUDs) as kidney donors is a worldwide trend in the current era of organ shortage, and spouses are an important source of LUDs. This study was to compare the long-term outcomes of spousal donor grafts with other LUD grafts. Among 445 LUD grafts, 77 were spouses and 368 were other LUDs. The clinical characteristics and long-term survival rates for spousal transplants were compared with those for other LUD transplants, and risk factors affecting graft survival were assessed. Spousal donors had a significantly higher average number of human leukocyte antigen (HLA) mismatches (4.2 vs. 3.4, p HLA mismatching, the spousal donor type or donor age did not affect the graft survival. Renal transplants from spousal donors show similar long-term outcomes to those from better HLA-matched and younger LUDs. (c) 2009 S. Karger AG, Basel.

  10. 10 CFR 72.184 - Safeguards contingency plan.

    Science.gov (United States)

    2010-01-01

    ... 10 Energy 2 2010-01-01 2010-01-01 false Safeguards contingency plan. 72.184 Section 72.184 Energy... Protection § 72.184 Safeguards contingency plan. (a) The requirements of the licensee's safeguards contingency plan for responding to threats and radiological sabotage must be as defined in appendix C to part...

  11. Searching for Plausible N-k Contingencies Endangering Voltage Stability

    DEFF Research Database (Denmark)

    Weckesser, Johannes Tilman Gabriel; Van Cutsem, Thierry

    2017-01-01

    This paper presents a novel search algorithm using time-domain simulations to identify plausible N − k contingencies endangering voltage stability. Starting from an initial list of disturbances, progressively more severe contingencies are investigated. After simulation of a N − k contingency......, the simulation results are assessed. If the system response is unstable, a plausible harmful contingency sequence has been found. Otherwise, components affected by the contingencies are considered as candidate next event leading to N − (k + 1) contingencies. This implicitly takes into account hidden failures...

  12. Bioethics of organ transplantation.

    Science.gov (United States)

    Caplan, Arthur

    2014-03-01

    As the ability to transplant organs and tissues has grown, the demand for these procedures has increased as well--to the point at which it far exceeds the available supply creating the core ethical challenge for transplantation--rationing. The gap between supply and demand, although large, is worse than it appears to be. There are two key steps to gaining access to a transplant. First, one must gain access to a transplant center. Then, those waiting need to be selected for a transplant. Many potential recipients do not get admitted to a program. They are deemed too old, not of the right nationality, not appropriate for transplant as a result of severe mental impairment, criminal history, drug abuse, or simply because they do not have access to a competent primary care physician who can refer them to a transplant program. There are also financial obstacles to access to transplant waiting lists in the United States and other nations. In many poor nations, those needing transplants simply die because there is no capacity or a very limited capacity to perform transplants. Although the demand for organs now exceeds the supply, resulting in rationing, the size of waiting lists would quickly expand were there to suddenly be an equally large expansion in the number of organs available for transplantation. Still, even with the reality of unavoidable rationing, saving more lives by increasing organ supply is a moral good. Current public policies for obtaining organs from cadavers are not adequate in that they do not produce the number of organs that public polls of persons in the United States indicate people are willing to donate.

  13. Psychophysics of associative learning: Quantitative properties of subjective contingency.

    Science.gov (United States)

    Maia, Susana; Lefèvre, Françoise; Jozefowiez, Jérémie

    2018-01-01

    Allan and collaborators (Allan, Hannah, Crump, & Siegel, 2008; Allan, Siegel, & Tangen, 2005; Siegel, Allan, Hannah, & Crump, 2009) recently proposed to apply signal detection theory to the analysis of contingency judgment tasks. When exposed to a flow of stimuli, participants are asked to judge whether there is a contingent relation between a cue and an outcome, that is, whether the subjective cue-outcome contingency exceeds a decision threshold. In this context, we tested the following hypotheses regarding the relation between objective and subjective cue-outcome contingency: (a) The underlying distributions of subjective cue-outcome contingency are Gaussian; (b) The mean distribution of subjective contingency is a linear function of objective cue-outcome contingency; and (c) The variance in the distribution of subjective contingency is constant. The hypotheses were tested by combining a streamed-trial contingency assessment task with a confidence rating procedure. Participants were exposed to rapid flows of stimuli at the end of which they had to judge whether an outcome was more (Experiment 1) or less (Experiment 2) likely to appear following a cue and how sure they were of their judgment. We found that although Hypothesis A seems reasonable, Hypotheses B and C were not. Regarding Hypothesis B, participants were more sensitive to positive than to negative contingencies. Regarding Hypothesis C, the perceived cue-outcome contingency became more variable when the contingency became more positive or negative, but only to a slight extent. (PsycINFO Database Record (c) 2018 APA, all rights reserved).

  14. Kidney transplant survival in pediatric and young adults

    Directory of Open Access Journals (Sweden)

    Acott Phil

    2011-10-01

    Full Text Available Abstract Background There is a perception that kidney transplant recipients transferred from pediatric centers to adult care have an increased risk of graft loss. It is not clear whether young adults transplanted in adult centers also suffer from high graft loss rates. Methods We examined death censored graft survival in 3 cohorts of young patients transplanted at a single center. Pediatric (PED patients transplanted at the pediatric center were compared to a cohort of young adults (YAD; age 18- Results In a multivariate Cox model for death-censored graft survival, PED survival was statistically similar to the YAD (HR 0.86, 95% CI 0.44, 1.7, p = 0.66, however the ADL cohort (HR 0.45, 95% CI 0.25, 0.82, p = 0.009 demonstrated better survival. Admitted non-adherence rates were not different among cohorts. Patients were transferred within a narrow age window (18.6 ± 1.0 age in years but at a wide range of times from the date of transplantation (5.1 ± 3.5 years and with a wide range of graft function (serum creatinine 182 ± 81 μmol/L. Conclusions The perception that pediatric transfers do poorly reflects advanced graft dysfunction in some at the time of transfer. The evidence also suggests that it is not the transfer of care that is the critical issue but rather recipients, somewhere between the ages of 11-14 and 25, are a unique and vulnerable cohort. Effective strategies to improve outcomes across this age group need to be identified and applied consistently.

  15. 48 CFR 225.7303-4 - Contingent fees.

    Science.gov (United States)

    2010-10-01

    ... 48 Federal Acquisition Regulations System 3 2010-10-01 2010-10-01 false Contingent fees. 225.7303....7303-4 Contingent fees. (a) Except as provided in paragraph (b) of this subsection, contingent fees are generally allowable under DoD contracts, provided— (1) The fees are paid to a bona fide employee or a bona...

  16. Rabies in Transplant Recipients

    Centers for Disease Control (CDC) Podcasts

    2016-09-19

    Dr. Richard Franka, a CDC scientist, discusses rabies in organ transplant recipients.  Created: 9/19/2016 by National Center for Emerging and Zoonotic Infectious Diseases (NCEZID).   Date Released: 9/19/2016.

  17. Fecal Transplants: What Is Being Transferred?

    Directory of Open Access Journals (Sweden)

    Diana P Bojanova

    2016-07-01

    Full Text Available Fecal transplants are increasingly utilized for treatment of recurrent infections (i.e., Clostridium difficile in the human gut and as a general research tool for gain-of-function experiments (i.e., gavage of fecal pellets in animal models. Changes observed in the recipient's biology are routinely attributed to bacterial cells in the donor feces (~1011 per gram of human wet stool. Here, we examine the literature and summarize findings on the composition of fecal matter in order to raise cautiously the profile of its multipart nature. In addition to viable bacteria, which may make up a small fraction of total fecal matter, other components in unprocessed human feces include colonocytes (~107 per gram of wet stool, archaea (~108 per gram of wet stool, viruses (~108 per gram of wet stool, fungi (~106 per gram of wet stool, protists, and metabolites. Thus, while speculative at this point and contingent on the transplant procedure and study system, nonbacterial matter could contribute to changes in the recipient's biology. There is a cautious need for continued reductionism to separate out the effects and interactions of each component.

  18. 40 CFR 264.51 - Purpose and implementation of contingency plan.

    Science.gov (United States)

    2010-07-01

    ... contingency plan. 264.51 Section 264.51 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED... DISPOSAL FACILITIES Contingency Plan and Emergency Procedures § 264.51 Purpose and implementation of contingency plan. (a) Each owner or operator must have a contingency plan for his facility. The contingency...

  19. Contingency Theories of Leadership: A Study.

    Science.gov (United States)

    Saha, Sunhir K.

    1979-01-01

    Some of the major contingency theories of leadership are reviewed; some results from the author's study of Fiedler's contingency model are reported; and some thoughts for the future of leadership research are provided. (Author/MLF)

  20. Contingency Management of Health Care Organizations: It Depends.

    Science.gov (United States)

    Olden, Peter C

    Managers in health care organizations (HCOs) must perform many processes and activities, such as planning goals, designing organization structure, leading people, motivating employees, making decisions, and resolving conflict. How they do all this strongly affects the performance and outcomes of their organizations and themselves. Some managers develop a usual way of performing their jobs and achieve some success with a preferred method of leading or a favorite approach to motivating. However, their success will be limited if they always rely on a standard "1-size-fits-all" approach. This is because contingency factors influence the effectiveness of a given approach to managing. The "best" approach depends on contingency factors, including the situation and the people involved. Managers should choose an approach to fit with the changing contingency factors. This article explains why and how managers should develop a contingency approach to managing HCOs. The development of contingency theory is briefly described. Practical application of contingency management is explained for leading, motivating, decision making, and resolving conflict. By using a contingency approach, managers can be more effective when managing their HCOs.

  1. [Contingencies of self-worth in Japanese culture: validation of the Japanese contingencies of self-worth scale].

    Science.gov (United States)

    Uchida, Yukiko

    2008-08-01

    The author developed a Japanese version of the Contingencies of Self-Worth Scale (CSWS) that was originally developed in the United States (Crocker, Luhtanen, Cooper, & Bouvrette, 2003). The Japanese version of the scale measures seven contingencies of self-esteem: Defeating others in competition, appearance, relationship harmony, other's approval, academic competence, virtue, and support of family and friends. Scores on the scale had systematic relationships with related variables, and the scale therefore exhibited satisfactory levels of construct validity: Relationship harmony, other's approval, and support of family and friends were positively correlated with sympathy and interdependence, whereas competitiveness was negatively correlated with sympathy. Moreover, competitiveness and academic achievement contingencies predicted competitive motivation, whereas the support of family and friends contingency predicted self-sufficient motivation. The scale has adequate test-retest reliability and a seven-factor structural model was confirmed. The implications for self-esteem and interpersonal relationships in Japanese culture are discussed.

  2. Inevitability, contingency, and epistemic humility.

    Science.gov (United States)

    Kidd, Ian James

    2016-02-01

    This paper offers an epistemological framework for the debate about whether the results of scientific enquiry are inevitable or contingent. I argue in Sections 2 and 3 that inevitabilist stances are doubly guilty of epistemic hubris--a lack of epistemic humility--and that the real question concerns the scope and strength of our contingentism. The latter stages of the paper-Sections 4 and 5-address some epistemological and historiographical worries and sketch some examples of deep contingencies to guide further debate. I conclude by affirming that the concept of epistemic humility can usefully inform critical reflection on the contingency of the sciences and the practice of history of science. Copyright © 2015 Elsevier Ltd. All rights reserved.

  3. Ethical, financial, and policy considerations in hand transplantation.

    Science.gov (United States)

    Chang, Jeff; Mathes, David W

    2011-11-01

    Currently, more than 65 hand transplants have been performed with studies demonstrating favorable cosmetic and functional outcomes and cortical reintegration of the transplanted hand. Due to such favorable outcomes, many view hand transplant as a potential gold standard for treatment of a double amputee. However, ethical debate continues regarding risks and benefits of this nonlifesaving procedure. Clinicians, patients, and society must agree on whether hand transplantation is ethical and affordable. If a decision is made to transplant a hand, this must be performed in a dedicated center that facilitates integration of multiple specialists, ethicists, pharmacists, and rehabilitationists. Copyright © 2011 Elsevier Inc. All rights reserved.

  4. LIVER TRANSPLANTATION IN JEHOVAH'S WITNESSES PATIENTS IN A CENTER OF NORTHEASTERN BRAZIL

    Directory of Open Access Journals (Sweden)

    José Huygens Parente GARCIA

    2013-04-01

    Full Text Available Context Liver transplantation has been accepted as a therapeutic option for patients with end-stage liver disease and acute liver failure. Currently, Brazil has a well-established public organ transplant program, performing 7,425 solid organs transplants in 2012 alone, among which 1,595 were liver transplants. Jehovah's Witnesses report 7,6 million members worldwide. For religious reasons they refuse transfusion of whole blood or its primary components (red cells, fresh frozen plasma, platelets. Objective This study aims to present the results obtained with Jehovah's Witnesses patients by a liver transplantation service. Method We conducted a retrospective review of medical records from Jehovah's Witnesses patients (n = 4 who underwent orthotopic liver transplantation from September 2009 to September 2011 at the Walter Cantídio University Hospital of the Federal University of Ceará, Fortaleza, CE, Brazil. Coagulation parameters such as Hemoglobin, Hematocrit, Platelets, INR were evaluated during the preoperative, immediate postoperative, postoperative day (POD 7 and POD 30. Results Coagulation parameters were expressed as means: hematocrit, 35.07% ± 6.65%, 24.6% ± 4.74%, 19.85% ± 2.10%, 31.85% ± 5.99%; hemoglobin, 12.57 g/dL ± 2.22, 8.92 g/dL ± 1.75, 6.92 g/dL ± 0.58, 11.17 g/dL ± 0.9; platelets, 160,975 mm 3 ± 148000, 128,000 mm 3 ± 34836, 65,000 mm 3 ± 33496, 234,250 mm 3 ± 287003 and INR, 143 ± 0.10, 2.4 ± 0.34, 1.24 ± 0.10, 1.14 ± 0.09. Conclusion Liver transplantation can successfully be performed in Jehovah's Witnesses patient population provided that: 1 the medical team has extensive expertise in that field, 2 the patient has an adequate level of hematologic factors preoperatively, and 3 there is availability of specialized equipment such as cell saver to minimize blood loss and thus avoid transfusion requirements.

  5. Head Start’s Impact is Contingent on Alternative Type of Care in Comparison Group

    Science.gov (United States)

    Brooks-Gunn, Jeanne; Waldfogel, Jane

    2014-01-01

    Using data (n = 3,790 with 2,119 in the 3-year-old cohort and 1,671 in the 4-year-old cohort) from 353 Head Start centers in the Head Start Impact Study, the only large-scale randomized experiment in Head Start history, this paper examined the impact of Head Start on children’s cognitive and parent-reported social-behavioral outcomes through first grade contingent on the child care arrangements used by children who were randomly assigned to the control group (i.e., parental care, relative/non-relative care, another Head Start program, or other center-based care). A principal score matching approach was adopted to identify children assigned to Head Start who were similar to children in the control group with a specific care arrangement. Overall, the results showed that the effects of Head Start varied substantially contingent on the alternative child care arrangements. Compared to children in parental care and relative/non-relative care, Head Start participants generally had better cognitive and parent-reported behavioral development, with some benefits of Head Start persisting through first grade; in contrast, few differences were found between Head Start and other center-based care. The results have implications regarding the children for whom Head Start is most beneficial as well as how well Head Start compares to other center-based programs. PMID:25329552

  6. 48 CFR 1318.201 - Contingency operation.

    Science.gov (United States)

    2010-10-01

    ... 48 Federal Acquisition Regulations System 5 2010-10-01 2010-10-01 false Contingency operation. 1318.201 Section 1318.201 Federal Acquisition Regulations System DEPARTMENT OF COMMERCE CONTRACTING METHODS AND CONTRACT TYPES EMERGENCY ACQUISITIONS Emergency Acquisition Flexibilities 1318.201 Contingency...

  7. 7 CFR 457.9 - Appropriation contingency.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 6 2010-01-01 2010-01-01 false Appropriation contingency. 457.9 Section 457.9 Agriculture Regulations of the Department of Agriculture (Continued) FEDERAL CROP INSURANCE CORPORATION, DEPARTMENT OF AGRICULTURE COMMON CROP INSURANCE REGULATIONS § 457.9 Appropriation contingency...

  8. PEGYLATED INTERFERON AND RIBAVIRIN FOR TREATMENT OF RECURRENT HEPATITIS C AFTER LIVER TRANSPLANTATION: a single-liver transplant center experience in Brazil

    Directory of Open Access Journals (Sweden)

    José Huygens Parente GARCIA

    2015-09-01

    Full Text Available BackgroundTreatment of hepatitis C virus infection in post-transplantation patients is a challenge due to poor tolerance and low success rates.ObjectiveTo determine the response rate to pegylated interferon and ribavirin in post-liver transplant patients with hepatitis C recurrence.MethodsBetween 18 May 2002 and 18 December 2011, 601 patients underwent liver transplantation at our service (Hospital Universitário Walter Cantídio, University of Ceará, 176 (29.2% of whom were hepatitis C virus positive. Forty received antiviral therapy and were included in this cohort study. Twenty-eight (70% completed the treatment protocol, which consisted of pegylated interferon and ribavirin for 48 weeks.ResultsThe sustained virological response rate was 55% according to intention-to-treat analysis. Recipient age and exposure to antiviral drugs prior to liver transplantation were associated with sustained virological response in the multivariate analysis. Patients were followed for 57 months on the average. Survival at 1 and 5 years was 100% in responders, versus 100% and 78%, respectively, in non-responders.ConclusionSustained virological response rates were satisfactory in our series of liver transplantation patients, and decreased with increasing recipient age. Non-exposure to antiviral drugs prior to liver transplantation was positively associated with sustained virological response. The overall survival of responders and non-responders was similar.

  9. Relative speed of processing determines color-word contingency learning.

    Science.gov (United States)

    Forrin, Noah D; MacLeod, Colin M

    2017-10-01

    In three experiments, we tested a relative-speed-of-processing account of color-word contingency learning, a phenomenon in which color identification responses to high-contingency stimuli (words that appear most often in particular colors) are faster than those to low-contingency stimuli. Experiment 1 showed equally large contingency-learning effects whether responding was to the colors or to the words, likely due to slow responding to both dimensions because of the unfamiliar mapping required by the key press responses. For Experiment 2, participants switched to vocal responding, in which reading words is considerably faster than naming colors, and we obtained a contingency-learning effect only for color naming, the slower dimension. In Experiment 3, previewing the color information resulted in a reduced contingency-learning effect for color naming, but it enhanced the contingency-learning effect for word reading. These results are all consistent with contingency learning influencing performance only when the nominally irrelevant feature is faster to process than the relevant feature, and therefore are entirely in accord with a relative-speed-of-processing explanation.

  10. The incidence of post-transplant cancer among kidney transplant recipients is associated with the level of tacrolimus exposure during the first year after transplantation.

    Science.gov (United States)

    Lichtenberg, Shelly; Rahamimov, Ruth; Green, Hefziba; Fox, Benjamin D; Mor, Eytan; Gafter, Uzi; Chagnac, Avry; Rozen-Zvi, Benaya

    2017-07-01

    Immunosuppressive therapy plays a major role in the development of post-transplant cancer. In this nested case-control study of kidney transplant recipients (KTRs), we investigated whether the incidence of post-transplant cancer is associated with the level of tacrolimus exposure over time. We screened the Rabin Medical Center database for adults who received kidney transplants between 2001 and 2014 and developed post-transplant cancer (excluding basal and squamous cell skin cancers). They were matched against KTRs without cancer. All patients received a maintenance immunosuppressive treatment with tacrolimus, mycophenolate mofetil and corticosteroids. The degree of exposure to tacrolimus was estimated as the time-weighted average (tTWA) value of tacrolimus blood levels. The tTWA was calculated as the area under the curve divided by time at 1, 6, and 12 months after transplantation and at time of cancer diagnosis. Thirty-two cases were matched against 64 controls. tTWA values above 11 ng/mL at 6 and 12 months after transplantation were associated with odds ratio (OR) of 3.1 (95% CI 1.1-9) and 11.7 (95% CI = 1.3-106), respectively, for post-transplant cancer; and with OR of 5.2 (95% CI 1.3-20.5) and 14.1 (95% CI = 1.5-134.3), respectively, for cancer diagnosed more than 3 years after transplantation. Exposure to a tacrolimus time-weighted average level above 11 ng/mL at 6 or 12 months after kidney transplantation is associated with an increased risk of developing cancer.

  11. Cancer risk and mortality after kidney transplantation

    DEFF Research Database (Denmark)

    Engberg, Henriette; Wehberg, Sonja; Bistrup, Claus

    2016-01-01

    BACKGROUND: Kidney recipients receive immunosuppression to prevent graft rejection, and long-term outcomes such as post-transplant cancer and mortality may vary according to the different protocols of immunosuppression. METHODS: A national register-based historical cohort study was conducted......, the Danish National Cancer Registry and the Danish National Patient Register were used. A historical cohort of 1450 kidney recipients transplanted in 1995-2005 was followed up with respect to post-transplant cancer and death until 31 December 2011. RESULTS: Compared with Center 1 the adjusted post...

  12. Hematopoietic stem cell transplantation in Europe 2014: more than 40 000 transplants annually.

    Science.gov (United States)

    Passweg, J R; Baldomero, H; Bader, P; Bonini, C; Cesaro, S; Dreger, P; Duarte, R F; Dufour, C; Kuball, J; Farge-Bancel, D; Gennery, A; Kröger, N; Lanza, F; Nagler, A; Sureda, A; Mohty, M

    2016-06-01

    A record number of 40 829 hematopoietic stem cell transplantation (HSCT) in 36 469 patients (15 765 allogeneic (43%), 20 704 autologous (57%)) were reported by 656 centers in 47 countries to the 2014 survey. Trends include: continued growth in transplant activity, more so in Eastern European countries than in the west; a continued increase in the use of haploidentical family donors (by 25%) and slower growth for unrelated donor HSCT. The use of cord blood as a stem cell source has decreased again in 2014. Main indications for HSCT were leukemias: 11 853 (33%; 96% allogeneic); lymphoid neoplasias; 20 802 (57%; 11% allogeneic); solid tumors; 1458 (4%; 3% allogeneic) and non-malignant disorders; 2203 (6%; 88% allogeneic). Changes in transplant activity include more allogeneic HSCT for AML in CR1, myeloproliferative neoplasm (MPN) and aplastic anemia and decreasing use in CLL; and more autologous HSCT for plasma cell disorders and in particular for amyloidosis. In addition, data on numbers of teams doing alternative donor transplants, allogeneic after autologous HSCT, autologous cord blood transplants are presented.

  13. Mini-Membrane Evaporator for Contingency Spacesuit Cooling

    Science.gov (United States)

    Makinen, Janice V.; Bue, Grant C.; Campbell, Colin; Petty, Brian; Craft, Jesse; Lynch, William; Wilkes, Robert; Vogel, Matthew

    2015-01-01

    The next-generation Advanced Extravehicular Mobility Unit (AEMU) Portable Life Support System (PLSS) is integrating a number of new technologies to improve reliability and functionality. One of these improvements is the development of the Auxiliary Cooling Loop (ACL) for contingency crewmember cooling. The ACL is a completely redundant, independent cooling system that consists of a small evaporative cooler--the Mini Membrane Evaporator (Mini-ME), independent pump, independent feedwater assembly and independent Liquid Cooling Garment (LCG). The Mini-ME utilizes the same hollow fiber technology featured in the full-sized AEMU PLSS cooling device, the Spacesuit Water Membrane Evaporator (SWME), but Mini-ME occupies only approximately 25% of the volume of SWME, thereby providing only the necessary crewmember cooling in a contingency situation. The ACL provides a number of benefits when compared with the current EMU PLSS contingency cooling technology, which relies upon a Secondary Oxygen Vessel; contingency crewmember cooling can be provided for a longer period of time, more contingency situations can be accounted for, no reliance on a Secondary Oxygen Vessel (SOV) for contingency cooling--thereby allowing a reduction in SOV size and pressure, and the ACL can be recharged-allowing the AEMU PLSS to be reused, even after a contingency event. The first iteration of Mini-ME was developed and tested in-house. Mini-ME is currently packaged in AEMU PLSS 2.0, where it is being tested in environments and situations that are representative of potential future Extravehicular Activities (EVA's). The second iteration of Mini-ME, known as Mini-ME2, is currently being developed to offer more heat rejection capability. The development of this contingency evaporative cooling system will contribute to a more robust and comprehensive AEMU PLSS.

  14. Liver transplantation in Greek children: 15 years experience

    Directory of Open Access Journals (Sweden)

    Dimitrios Takoudas

    2010-09-01

    Full Text Available Liver transplantation (LT is the only available live-saving procedure for children with irreversible liver failure. This paper reports our experience from the follow-up of 16 Greek children with end-stage liver failure who underwent a LT. Over a period of 15 years, 16 pediatric liver recipients received follow up after being subjected to OLT (orthotopic liver transplantation due to end-stage liver failure. Nine children initially presented with extrahepatic biliary atresia, 2 with acute liver failure after toxic mushroom ingestion, 2 with intrahepatic cholestasis, 2 with metabolic diseases and one with hepatoblastoma. Ten children received a liver transplant in the Organ Transplantation Unit of Aristotle University of Thessaloniki and the rest in other transplant centers. Three transplants came from a living-related donor and 13 from a deceased donor. Six children underwent immunosuppressive treatment with cyclo­sporine, mycophenolate mofetil and corticosteroids, and 7 with tacrolimus, mycophenolate mofetil and corticosteroids. Three out of 16 children died within the first month after the transplantation due to post-transplant complications. Three children presented with acute rejection and one with chronic organ rejection which was successfully managed. Five children presented with cytomegalovirus infection, 5 with Epstein-Barr virus, 2 with HSV1,2, 2 with ParvoB19 virus, 2 with varicella-zoster virus and one with C. Albicans infection. One child presented with upper gastrointestinal hemorrhage and one with small biliary paucity. A satisfying outcome was achieved in most cases, with good graft function, except for the patient with small biliary paucity who required re-transplantation. The long-term clinical course of liver transplanted children is good under the condition that they are attended in specialized centers.

  15. Contingency learning in human fear conditioning involves the ventral striatum.

    Science.gov (United States)

    Klucken, Tim; Tabbert, Katharina; Schweckendiek, Jan; Merz, Christian Josef; Kagerer, Sabine; Vaitl, Dieter; Stark, Rudolf

    2009-11-01

    The ability to detect and learn contingencies between fearful stimuli and their predictive cues is an important capacity to cope with the environment. Contingency awareness refers to the ability to verbalize the relationships between conditioned and unconditioned stimuli. Although there is a heated debate about the influence of contingency awareness on conditioned fear responses, neural correlates behind the formation process of contingency awareness have gained only little attention in human fear conditioning. Recent animal studies indicate that the ventral striatum (VS) could be involved in this process, but in human studies the VS is mostly associated with positive emotions. To examine this question, we reanalyzed four recently published classical fear conditioning studies (n = 117) with respect to the VS at three distinct levels of contingency awareness: subjects, who did not learn the contingencies (unaware), subjects, who learned the contingencies during the experiment (learned aware) and subjects, who were informed about the contingencies in advance (instructed aware). The results showed significantly increased activations in the left and right VS in learned aware compared to unaware subjects. Interestingly, this activation pattern was only found in learned but not in instructed aware subjects. We assume that the VS is not involved when contingency awareness does not develop during conditioning or when contingency awareness is unambiguously induced already prior to conditioning. VS involvement seems to be important for the transition from a contingency unaware to a contingency aware state. Implications for fear conditioning models as well as for the contingency awareness debate are discussed.

  16. 40 CFR 264.227 - Emergency repairs; contingency plans.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 25 2010-07-01 2010-07-01 false Emergency repairs; contingency plans... FACILITIES Surface Impoundments § 264.227 Emergency repairs; contingency plans. (a) A surface impoundment... days after detecting the problem. (c) As part of the contingency plan required in subpart D of this...

  17. Autologous Transplantation in Follicular Lymphoma with Early Therapy Failure: A National LymphoCare Study and Center for International Blood and Marrow Transplant Research Analysis.

    Science.gov (United States)

    Casulo, Carla; Friedberg, Jonathan W; Ahn, Kwang W; Flowers, Christopher; DiGilio, Alyssa; Smith, Sonali M; Ahmed, Sairah; Inwards, David; Aljurf, Mahmoud; Chen, Andy I; Choe, Hannah; Cohen, Jonathon; Copelan, Edward; Farooq, Umar; Fenske, Timothy S; Freytes, Cesar; Gaballa, Sameh; Ganguly, Siddhartha; Jethava, Yogesh; Kamble, Rammurti T; Kenkre, Vaishalee P; Lazarus, Hillard; Lazaryan, Aleksandr; Olsson, Richard F; Rezvani, Andrew R; Rizzieri, David; Seo, Sachiko; Shah, Gunjan L; Shah, Nina; Solh, Melham; Sureda, Anna; William, Basem; Cumpston, Aaron; Zelenetz, Andrew D; Link, Brian K; Hamadani, Mehdi

    2017-12-11

    Patients with follicular lymphoma (FL) experiencing early therapy failure (ETF) within 2 years of frontline chemoimmunotherapy have poor overall survival (OS). We analyzed data from the Center for International Blood and Marrow Transplant Research (CIBMTR) and the National LymphoCare Study (NLCS) to determine whether autologous hematopoietic cell transplant (autoHCT) can improve outcomes in this high-risk FL subgroup. ETF was defined as failure to achieve at least partial response after frontline chemoimmunotherapy or lymphoma progression within 2 years of frontline chemoimmunotherapy. We identified 2 groups: the non-autoHCT cohort (patients from the NLCS with ETF not undergoing autoHCT) and the autoHCT cohort (CIBMTR patients with ETF undergoing autoHCT). All patients received rituximab-based chemotherapy as frontline treatment; 174 non-autoHCT patients and 175 autoHCT patients were identified and analyzed. There was no difference in 5-year OS between the 2 groups (60% versus 67%, respectively; P = .16). A planned subgroup analysis showed that patients with ETF receiving autoHCT soon after treatment failure (≤1 year of ETF; n = 123) had higher 5-year OS than those without autoHCT (73% versus 60%, P = .05). On multivariate analysis, early use of autoHCT was associated with significantly reduced mortality (hazard ratio, .63; 95% confidence interval, .42 to .94; P = .02). Patients with FL experiencing ETF after frontline chemoimmunotherapy lack optimal therapy. We demonstrate improved OS when receiving autoHCT within 1 year of treatment failure. Results from this unique collaboration between the NLCS and CIBMTR support consideration of early consolidation with autoHCT in select FL patients experiencing ETF. Copyright © 2017 The American Society for Blood and Marrow Transplantation. Published by Elsevier Inc. All rights reserved.

  18. Cytomegalovirus pp65 antigenemia-guided pre-emptive treatment with ganciclovir after allogeneic stem transplantation: a single-center experience.

    Science.gov (United States)

    Manteiga, R; Martino, R; Sureda, A; Labeaga, R; Brunet, S; Sierra, J; Rabella, N

    1998-11-01

    The optimal prophylactic strategy for cytomegalovirus (CMV) disease after allogeneic hematopoietic stem cell transplantation has not yet been established. The aim of this study was to analyze our single-center experience with a uniform protocol of CMV antigenemia-guided pre-emptive treatment with ganciclovir (GCV) after allografting. Fifty-two consecutive adult patients, 48 of them transplanted from HLA-identical matched related donors were included. T cell-depleted marrow or peripheral blood were used in 21 cases. After engraftment, weekly blood samples were tested for CMV pp65 antigenemia and viremia (conventional cultures) until day +100. GCV was started if CMV antigenemia and/or CMV viremia were detected. CMV infection (CMV-I) was found in 19 patients (37%). Seven patients suffered from CMV disease (CMV-D), three colitis and four pneumonias. There was one death directly related to CMV-D and three further cases died from refractory GVHD with CMV-D. Only one patient developed CMV pneumonia without any previous positive antigenemia and/or viremia. Multivariate analysis identified grades II-IV acute GVHD (P = 0.02) and peripheral blood stem cell transplantation (P = 0.03) to be risk factors for developing CMV-I. In conclusion, this monitoring protocol allowed early treatment of CMV-I without progression to CMV-D. Pre-emptive therapy had the additional advantage of avoiding GCV administration in most of our allograft recipients.

  19. Contingent and Alternative Work Arrangements, Defined.

    Science.gov (United States)

    Polivka, Anne E.

    1996-01-01

    Discusses the definitions of contingent workers and alternative work arrangements used by the Bureau of Labor Statistics to analyze data, and presents aggregate estimates of the number of workers in each group. Discusses the overlap between contingent workers and workers in alternative arrangements. (Author/JOW)

  20. 40 CFR 51.1012 - Requirement for contingency measures.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 2 2010-07-01 2010-07-01 false Requirement for contingency measures... Implementation of PM2.5 National Ambient Air Quality Standards § 51.1012 Requirement for contingency measures... contingency measures to be undertaken if the area fails to make reasonable further progress, or fails to...

  1. Soluble CD30 levels in recipients undergoing heart transplantation do not predict post-transplant outcome.

    Science.gov (United States)

    Ypsilantis, Efthymios; Key, Timothy; Bradley, J Andrew; Morgan, C Helen; Tsui, Stephen; Parameshwar, Jayan; Taylor, Craig J

    2009-11-01

    The pre-transplant serum level of soluble CD30 (sCD30), a proteolytic derivative of the lymphocyte surface receptor CD30, has been suggested as a biomarker for immunologic risk after organ transplantation. Pre-transplant serum sCD30 levels were determined in 200 consecutive adult heart transplant recipients undertaken at a single center. Transplant outcome (acute rejection in the first 12 months and patient survival up to 5 years post-transplant) was determined. Patients treated with a left ventricular assist device (LVAD) prior to transplantation (n = 28) had higher levels of sCD30 (median 64 U/ml, range 12 to 112 U/ml) than those (n = 172) with no LVAD (median 36 U/ml, range 1 to 158 U/ml, p sCD30 levels were "low" (lower quartile, 58 U/ml, n = 50). Neither acute rejection nor recipient survival differed according to sCD30 level, with values (mean +/- SEM) of 0.30 +/- 0.04, 0.23 +/- 0.03 and 0.30 +/- 0.05 acute rejection episodes per 100 days in the low, intermediate and high groups, respectively, with recipient survival rates at 1 year of 77.7%, 84.9% and 86% and at 5 years of 73.6%, 67.9% and 75.8%, respectively. Pre-transplant serum sCD30 level does not predict acute allograft rejection or recipient survival after heart transplantation, although sCD30 levels are increased by LVAD, possibly as a result of biomaterial-host immune interaction.

  2. The Role of Feedback Contingency in Perceptual Category Learning

    Science.gov (United States)

    Ashby, F. Gregory; Vucovich, Lauren E.

    2016-01-01

    Feedback is highly contingent on behavior if it eventually becomes easy to predict, and weakly contingent on behavior if it remains difficult or impossible to predict even after learning is complete. Many studies have demonstrated that humans and nonhuman animals are highly sensitive to feedback contingency, but no known studies have examined how feedback contingency affects category learning, and current theories assign little or no importance to this variable. Two experiments examined the effects of contingency degradation on rule-based and information-integration category learning. In rule-based tasks, optimal accuracy is possible with a simple explicit rule, whereas optimal accuracy in information-integration tasks requires integrating information from two or more incommensurable perceptual dimensions. In both experiments, participants each learned rule-based or information-integration categories under either high or low levels of feedback contingency. The exact same stimuli were used in all four conditions and optimal accuracy was identical in every condition. Learning was good in both high-contingency conditions, but most participants showed little or no evidence of learning in either low-contingency condition. Possible causes of these effects are discussed, as well as their theoretical implications. PMID:27149393

  3. An Evidence-based Approach to Developing a Management Strategy for Medical Contingencies on the Lunar Surface: The NASA/Haughton-Mars Project (HMP) 2006 Lunar Medical Contingency Simulation at Devon Island

    Science.gov (United States)

    Scheuring, R. A.; Jones, J. A.; Lee, P.; Comtois, J. M.; Chappell, S.; Rafiq, A.; Braham, S.; Hodgson, E.; Sullivan, P.; Wilkinson, N.; hide

    2007-01-01

    The lunar architecture for future sortie and outpost missions will require humans to serve on the lunar surface considerably longer than the Apollo moon missions. Although the Apollo crewmembers sustained few injuries during their brief lunar surface activity, injuries did occur and are a concern for the longer lunar stays. Interestingly, lunar medical contingency plans were not developed during Apollo. In order to develop an evidence-base for handling a medical contingency on the lunar surface, a simulation using the moon-Mars analog environment at Devon Island, Nunavut, high Canadian Arctic was conducted. Objectives of this study included developing an effective management strategy for dealing with an incapacitated crewmember on the lunar surface, establishing audio/visual and biomedical data connectivity to multiple centers, testing rescue/extraction hardware and procedures, and evaluating in suit increased oxygen consumption. Methods: A review of the Apollo lunar surface activities and personal communications with Apollo lunar crewmembers provided the knowledge base of plausible scenarios that could potentially injure an astronaut during a lunar extravehicular activity (EVA). Objectives were established to demonstrate stabilization and transfer of an injured crewmember and communication with ground controllers at multiple mission control centers. Results: The project objectives were successfully achieved during the simulation. Among these objectives were extraction from a sloped terrain by a two-member crew in a 1 g analog environment, establishing real-time communication to multiple centers, providing biomedical data to flight controllers and crewmembers, and establishing a medical diagnosis and treatment plan from a remote site. Discussion: The simulation provided evidence for the types of equipment and methods for performing extraction of an injured crewmember from a sloped terrain. Additionally, the necessary communications infrastructure to connect

  4. 48 CFR 1632.770 - Contingency reserve payments.

    Science.gov (United States)

    2010-10-01

    ... FINANCING Contract Funding 1632.770 Contingency reserve payments. (a) Payments from the contingency reserve... advise the carrier of its decision. However, OPM shall not unreasonably withhold approval for amounts...

  5. Independent Pre-Transplant Recipient Cancer Risk Factors after Kidney Transplantation and the Utility of G-Chart Analysis for Clinical Process Control.

    Science.gov (United States)

    Schrem, Harald; Schneider, Valentin; Kurok, Marlene; Goldis, Alon; Dreier, Maren; Kaltenborn, Alexander; Gwinner, Wilfried; Barthold, Marc; Liebeneiner, Jan; Winny, Markus; Klempnauer, Jürgen; Kleine, Moritz

    2016-01-01

    The aim of this study is to identify independent pre-transplant cancer risk factors after kidney transplantation and to assess the utility of G-chart analysis for clinical process control. This may contribute to the improvement of cancer surveillance processes in individual transplant centers. 1655 patients after kidney transplantation at our institution with a total of 9,425 person-years of follow-up were compared retrospectively to the general German population using site-specific standardized-incidence-ratios (SIRs) of observed malignancies. Risk-adjusted multivariable Cox regression was used to identify independent pre-transplant cancer risk factors. G-chart analysis was applied to determine relevant differences in the frequency of cancer occurrences. Cancer incidence rates were almost three times higher as compared to the matched general population (SIR = 2.75; 95%-CI: 2.33-3.21). Significantly increased SIRs were observed for renal cell carcinoma (SIR = 22.46), post-transplant lymphoproliferative disorder (SIR = 8.36), prostate cancer (SIR = 2.22), bladder cancer (SIR = 3.24), thyroid cancer (SIR = 10.13) and melanoma (SIR = 3.08). Independent pre-transplant risk factors for cancer-free survival were age 62.6 years (p = 0.001, HR: 1.29), polycystic kidney disease other than autosomal dominant polycystic kidney disease (ADPKD) (p = 0.001, HR: 0.68), high body mass index in kg/m2 (pKaizen events and audits for root-cause analysis of relevant detection rate changes. Further, comparative G-chart analysis would enable benchmarking of cancer surveillance processes between centers.

  6. INVESTIGATION OF CONTINGENCY PATTERNS OF TEACHERS’ SCAFFOLDING IN TEACHING AND LEARNING MATHEMATICS

    Directory of Open Access Journals (Sweden)

    Anwar Anwar

    2016-12-01

    Full Text Available The purpose of this study is to investigate the patterns of scaffolding contingency in teaching and learning mathematics carried out by three teachers. Contingency patterns are obtained by examining the transcription from video recording of conversation fragments between teachers and students during the provision of scaffolding. The contingency patterns are drawn in three strategies: diagnostic strategy, intervention strategy, and checking diagnosis. The result shows that the three teachers expressed different interaction contingencies in their scaffolding activities: contingent dominant, non-contingent dominant, and pseudo-contingent. It is also found that the learning interaction performed by experienced teachers tends to be contingent dominant compared to novice teachers. Keywords: Contingency, Contingent Dominant, Non-Contingent Dominant, Pseudo Contingent, Scaffolding DOI: http://dx.doi.org/10.22342/jme.8.1.3410.65-76

  7. Challenges in renal transplantation in Yemen.

    Science.gov (United States)

    El-Nono, Ibrahiem H; Telha, Khaled A; Al-Alimy, Gamil M; Ghilan, Abdulilah M; Abu Asba, Nagieb W; Al-Zkri, Abdo M; Al-Adimi, Abdulilah M; Al-Ba'adani, Tawfiq H

    2015-02-16

    Background Renal replacement therapy was first introduced in Yemen in 1978 in the form of hemodialysis. Twenty years later, the first renal transplantation was performed. Kidney transplantations were started in socially and financially challenging circumstances in Yemen in 1998. A structured program was established and has been functioning regularly since 2005. A pediatric transplantation program was started in 2011. Material and Methods This was a prospective study of 181 transplants performed at the Urology and Nephrology Center between May 1998 and 2012. All transplants were from living related donors. The immunosuppressive protocol consisted initially of double therapy with steroid and mycophenolate mofetil (MMF). Subsequently, triple therapy with addition of a calcineurin inhibitor was introduced. Primary graft function was achieved in 176 (97.2%) recipients. Results Cold ischemia time was 48-68 min. Episodes of acute rejection in 12 patients were treated with high-dose steroids. Anti-thymocyte globulin (ATG) was used in cases of vascular or steroid-resistant rejection in 2 patients. The post-transplant complications, either surgical or medical, were comparable to those recorded in the literature. Conclusions Renal transplantation is a good achievement in our country. The patients and graft survival rates are comparable to other reports.

  8. Resurgence of instrumental behavior after an abstinence contingency.

    Science.gov (United States)

    Bouton, Mark E; Schepers, Scott T

    2014-06-01

    In resurgence, an extinguished instrumental behavior (R1) recovers when a behavior that has replaced it (R2) is also extinguished. The phenomenon may be relevant to understanding relapse that can occur after the termination of "contingency management" treatments, in which an unwanted behavior (e.g., substance abuse) is reduced by reinforcing an alternative behavior. When reinforcement is discontinued, the unwanted behavior might resurge. However, unlike most resurgence experiments, contingency management treatments also introduce a negative contingency, in which reinforcers are not delivered unless the client has abstained from the unwanted behavior. In two experiments with rats, we therefore examined the effects of adding a negative "abstinence" contingency to the resurgence design. During response elimination, R2 was not reinforced unless R1 had not been emitted for a minimum period of time (45, 90, or 135 s). In both experiments, adding such a contingency to simple R1 extinction reduced, but did not eliminate, resurgence. In Experiment 2, we found the same effect in a yoked group that could earn reinforcers for R2 at the same points in time as the negative-contingency group, but without the requirement to abstain from R1. Thus, the negative contingency per se did not contribute to the reduction in resurgence. These results suggest that the contingency reduced resurgence by making reinforcers more difficult to earn and more widely spaced in time. This could have allowed the animal to learn that R1 was extinguished in the "context" of infrequent reinforcement-a context more like that of resurgence testing. The results are thus consistent with a contextual (renewal) account of resurgence. The method might provide a better model of relapse after termination of a contingency management treatment.

  9. Proteinuria in Egyptian renal transplant recipients

    Directory of Open Access Journals (Sweden)

    Essam Khedr

    2015-01-01

    Full Text Available To evaluate the prevalence, risk factors, possible etiology, prognosis and management of proteinuria in renal transplant recipients, we studied 435 adult renal transplant recipient patients randomly selected from our center; 394 patients were reviewed retrospectively and 41 patients were followed-up prospectively for a period of one year. The patients were classified into three groups according to the results of urinalysis and spot urinary albumin creatinine ratio: Group A patients with normoalbuminuria; Group B patients with microalbuminuria; and Group C patients with macroalbuminuria. Persistent post-transplantation proteinuria was detected in 125 (28.8% patients. The etiology of post-transplantation proteinuria included chronic allograft dysfunction in 44 (35.2% patients, acute rejection in 40 (32% patients, transplant glomerulopathy in eight (6.4% patients, glomerular disease in 16 (12.8% patients and other etiology in 17 (13.6% patients. Proteinuric patients demonstrated significantly lower graft survival rates than did those without proteinuria (48.3% versus 51.7%, respectively; P = 0.017; Risk Ratio = 0.403; 95% confidence interval 0.188-0.862. We conclude that proteinuria is prevalent after kidney transplant in our population, and that it is most commonly associated with chronic allograft nephropathy, transplant glomerulopathy, glomerulonephritis and acute rejection. Post-transplant proteinuria is associated with decreased allograft survival.

  10. 40 CFR 265.51 - Purpose and implementation of contingency plan.

    Science.gov (United States)

    2010-07-01

    ... contingency plan. 265.51 Section 265.51 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED..., STORAGE, AND DISPOSAL FACILITIES Contingency Plan and Emergency Procedures § 265.51 Purpose and implementation of contingency plan. (a) Each owner or operator must have a contingency plan for his facility. The...

  11. The Changing Financial Landscape of Renal Transplant Practice: A National Cohort Analysis.

    Science.gov (United States)

    Axelrod, D A; Schnitzler, M A; Xiao, H; Naik, A S; Segev, D L; Dharnidharka, V R; Brennan, D C; Lentine, K L

    2017-02-01

    Kidney transplantation has become more resource intensive as recipient complexity has increased and average donor quality has diminished over time. A national retrospective cohort study was performed to assess the impact of kidney donor and recipient characteristics on transplant center cost (exclusive of organ acquisition) and Medicare reimbursement. Data from the national transplant registry, University HealthSystem Consortium hospital costs, and Medicare payments for deceased donor (N = 53 862) and living donor (N = 36 715) transplants from 2002 to 2013 were linked and analyzed using multivariate linear regression modeling. Deceased donor kidney transplant costs were correlated with recipient (Expected Post Transplant Survival Score, degree of allosensitization, obesity, cause of renal failure), donor (age, cause of death, donation after cardiac death, terminal creatinine), and transplant (histocompatibility matching) characteristics. Living donor costs rose sharply with higher degrees of allosensitization, and were also associated with obesity, cause of renal failure, recipient work status, and 0-ABDR mismatching. Analysis of Medicare payments for a subsample of 24 809 transplants demonstrated minimal correlation with patient and donor characteristics. In conclusion, the complexity in the landscape of kidney transplantation increases center costs, posing financial disincentives that may reduce organ utilization and limit access for higher-risk populations. © Copyright 2016 The American Society of Transplantation and the American Society of Transplant Surgeons.

  12. Suicidal hanging donors for lung transplantation

    Science.gov (United States)

    Ananiadou, Olga; Schmack, Bastian; Zych, Bartlomiej; Sabashnikov, Anton; Garcia-Saez, Diana; Mohite, Prashant; Weymann, Alexander; Mansur, Ashham; Zeriouh, Mohamed; Marczin, Nandor; De Robertis, Fabio; Simon, Andre Rüdiger; Popov, Aron-Frederik

    2018-01-01

    Abstract In the context of limited donor pool in cardiothoracic transplantation, utilization of organs from high risk donors, such as suicidal hanging donors, while ensuring safety, is under consideration. We sought to evaluate the outcomes of lung transplantations (LTx) that use organs from this group. Between January 2011 and December 2015, 265 LTx were performed at our center. Twenty-two recipients received lungs from donors after suicidal hanging (group 1). The remaining 243 transplantations were used as a control (group 2). Analysis of recipient and donor characteristics as well as outcomes was performed. No statistically significant difference was found in the donor characteristics between analyzed groups, except for higher incidence of cardiac arrest, younger age and smoking history of hanging donors (P donor cause of death is not associated with poor mid-term survival or chronic lung allograft dysfunction following transplantation. These results encourage assessment of lungs from hanging donors, and their consideration for transplantation. PMID:29620623

  13. Contingency planning in southern Africa: Events rather than processes?

    Directory of Open Access Journals (Sweden)

    Elias Mabaso

    2013-09-01

    Full Text Available With the increasing frequency, magnitude and impact of disasters, there is growing focus on contingency planning as a tool for enhancing resilience. Yet, there is little empirical evidence that reflects on the practice of contingency planning systems within the context of disaster risk reduction. This article explores the practice of contingency planning in southern Africa, focussing on Malawi, Mozambique, Namibia, Zambia and Zimbabwe. A qualitative comparative analysis informed by fieldwork was used. The findings show that (1 there was a wide gap between theory and practice in contingency planning, (2 response activities rarely reflected projected scenarios and (3 resources were inadequate for effective contingency planning. We conclude that unless these issues are addressed, contingency planning is likely to remain a theoretical rather than a practical tool for building disaster-resilient communities in southern African countries. Although a generalisation cannot be made on the status of contingency planning and practice in southern Africa without a wider analysis of more examples, the findings may apply beyond the examined contexts and also offer insights into research gaps.

  14. ORGAN DONATION AND TRANSPLANTATION IN RUSSIAN FEDERATION IN 2011

    Directory of Open Access Journals (Sweden)

    S. V. Gautier

    2012-01-01

    Full Text Available Registry data analysis shows stabilization of indicators of donor and transplant activity in 2011 after continuous growth within five years, increase in a share of effective donors after brain death and multi-organ explantation, development of thoracic organs transplantation and living related donor kidney transplantation. In the conditions of decentralization of organ donation and transplant programs it is necessary to develop coope- ration between transplant centers and to expand the practice of an interregional exchange of donor organs. The federal law «About bases of health protection of citizens in the Russian Federation», accepted in 2011, creates a legal basis for development and acceptance of the new legislation in the sphere of organ donation and transplantation

  15. Do the Benefits of Transplant Tourism Amongst Nigerian Patients Outweigh the Risks? A Single-Center Experience.

    Science.gov (United States)

    Amira, C O; Bello, B T

    2017-01-01

    Transplant tourism (TT) is the term used to describe travel outside one's country of abode for the sole purpose of obtaining organ transplantation services. This study describes the characteristics and outcomes of kidney transplant tourists who were followed up in our institution. A retrospective study was conducted on patients who underwent kidney transplantation outside the country and were followed up in our institution from 2007 to 2015. 26 patients were followed up; 19 (73%) were males. The mean±SD age of patients was 40.5±10.3 years. The majority (n=20) of the transplantations were carried out in India. Living-unrelated transplants were most common (54%). Complications encountered were infections in 11 (42%) patients, new-onset diabetes after transplantation in 9 (35%), chronic allograft nephropathy in 8 (31%), biopsy-proven acute rejections in 3 (12%), and primary non-function in 2 (8%). 1-year graft survival was 81% and 1-year patient survival was 85%. Kidney transplant tourism is still common among Nigerian patients with end-stage renal disease. Short-term graft and patient survival rates were poorer than values recommended for living kidney transplants. We therefore advise that TT should be discouraged in Nigeria, given the availability of transplantation services in the country, and also in line with international efforts to curb the practice.

  16. The relationship between social networks and pathways to kidney transplant parity: evidence from black Americans in Chicago.

    Science.gov (United States)

    Browne, Teri

    2011-09-01

    Research has shown that black dialysis patients in the United States are significantly less likely than their white peers to be evaluated and listed for a kidney transplant. Extrapolating from social-network theory, I hypothesize that a lack of access to social contacts with information about kidney transplantation may hinder information transaction regarding the benefits of, and pathway to, transplantation. In 2007-2008, the following research questions were addressed in an investigation in Chicago, USA: (1) What is the role of social networks in providing information about kidney transplantation to black hemodialysis patients? (2) What is the relationship between social networks and a patient's likelihood of being seen at a kidney transplant center? From a stratified sample of dialysis units in the area, a purposive sample of 228 black patients was surveyed while they received treatment about their social networks and kidney transplant status. It was found that the odds of black hemodialysis patients being seen at a kidney transplant center increase with income, and patients who have people in their social network with information about kidney transplant were significantly more likely to be seen at a kidney transplant center. Specifically, black dialysis patients who get informational social support from their dialysis team and social networks were significantly more likely to be seen at kidney transplant centers. I conclude that considering black dialysis patients' social milieu can be complementary to the existing research regarding this public health crisis. Copyright © 2011 Elsevier Ltd. All rights reserved.

  17. Nonmelanoma Skin Cancer in Nonwhite Organ Transplant Recipients.

    Science.gov (United States)

    Pritchett, Ellen N; Doyle, Alden; Shaver, Christine M; Miller, Brett; Abdelmalek, Mark; Cusack, Carrie Ann; Malat, Gregory E; Chung, Christina Lee

    2016-12-01

    Organ transplant recipients have a higher incidence of skin cancer. This risk is magnified over time and with continued exposure to immunosuppression. Skin cancer in nonwhite patients is associated with greater morbidity and mortality owing to diagnosis at a more advanced stage, which suggests that nonwhite organ transplant recipients are at even higher risk. To describe demographic and clinical factors and the incidence of skin cancer in nonwhite organ transplant recipients. We performed a retrospective medical record review of patients who were organ transplant recipients (154 were white and 259 nonwhite [black, Asian, Hispanic, Pacific Islander]) seen from November 1, 2011, to April 18, 2016 at an academic referral center. Variables were analyzed and compared between racial groups, including sex, age, race/ethnicity, Fitzpatrick type, type and location of skin cancer, type of organ transplanted, time to diagnosis of skin cancer after transplantation, and history of condyloma acuminata and/or verruca vulgaris. Most of the 413 patients (62.7%) evaluated were nonwhite organ transplant recipients; 264 were men, and 149 were women. Their mean (SD) age was 60.09 (13.59) years. Nineteen skin cancers were identified in 15 patients (5.8%) representing 3 racial/ethnic groups: black (6 patients), Asian (5), and Hispanic (4). All squamous cell carcinomas in blacks were diagnosed in the in situ stage, located on sun-protected sites, and occurred in patients whose lesions tested positive for human papilloma virus (HPV) and/or who endorsed a history of condyloma acuminata or verruca vulgaris. Most skin cancers in Asians were located on sun-exposed areas and occurred in individuals who emigrated from equatorial locations. Nonwhite organ transplant recipients are at risk for developing skin cancer posttransplantation. Follow-up in a specialized transplant dermatology center and baseline total-body skin examination should be part of posttransplantation care in all organ

  18. Recipient Related Prognostic Factors for Graft Survival after Kidney Transplantation. A Single Center Experience

    Directory of Open Access Journals (Sweden)

    Alina Daciana ELEC

    2012-09-01

    Full Text Available Background and Aim. Advanced chronic kidney disease (CKD severely impairs life expectancy and quality of life in affected patients. Considering its benefits, renal transplantation currently represents the optimal treatment solution for end stage kidney disease patients. Pre-transplant assessment aims to maximize the graft and patient survival by identifying potential factors influencing the post-transplant outcome. The aim of this study has been to analyze recipient related prognostic factors bearing an impact on graft survival. Material and Methods. We analyzed the graft outcomes of 426 renal transplantations performed at the Clinical Institute of Urology and Renal Transplantation of Cluj-Napoca, between January 2004 and December 2008. Variables related to recipient and to potential donor/recipient prognostic factors were studied using univariate and multivariate analysis. Results. Graft survivals at 1, 3, 5 and 7 years were 94.01%, 88.37%, 82.51% and 78.10%, respectively. Chronic rejection (41.11% and death with a functioning graft (18.88% were the main causes of graft loss. In uni and multivariate analysis the recipient related variables found to influence the renal graft outcome were: peritoneal dialysis, pre transplant residual diuresis, grade I hypertension, severe iliac vessel atheromatosis, ischemic heart disease, stroke history, dyslipidemia and denutrition. The worst graft outcomes have been found for recipients on peritoneal dialysis, with anuria, hypotension, severe iliac atheromatosis, ischemic heart disease, stroke history, dyslipidemia and a poor nutritional status. Conclusion. The type of dialysis, the pre transplant residual diuresis, recipient arterial blood pressure, iliac vessel atheromatosis, ischemic heart disease, stroke history, dyslipidemia and denutrition significantly influence graft survival.

  19. Equivalence relations and the reinforcement contingency.

    Science.gov (United States)

    Sidman, M

    2000-07-01

    Where do equivalence relations come from? One possible answer is that they arise directly from the reinforcement contingency. That is to say, a reinforcement contingency produces two types of outcome: (a) 2-, 3-, 4-, 5-, or n-term units of analysis that are known, respectively, as operant reinforcement, simple discrimination, conditional discrimination, second-order conditional discrimination, and so on; and (b) equivalence relations that consist of ordered pairs of all positive elements that participate in the contingency. This conception of the origin of equivalence relations leads to a number of new and verifiable ways of conceptualizing equivalence relations and, more generally, the stimulus control of operant behavior. The theory is also capable of experimental disproof.

  20. Blood stream infections in renal transplant recipients: a single-center study.

    Science.gov (United States)

    Daskalaki, E; Koukoulaki, M; Bakalis, A; Papastamopoulos, V; Belesiotou, E; Perivolioti, E; Skoutelis, A; Drakopoulos, S

    2014-11-01

    Bacteremias among renal transplant recipients are more frequent as a result of immunosuppression. They are considered extremely high-risk because they are correlated with decreased allograft and recipient survival. All episodes of bacteremia among renal transplant recipients were documented following review of medical records, from January 2010 to May 2013. In total 26 episodes of bacteremia were observed in 22 patients. Gram negative bacteremia was identified in 73% (19/26) cases. Pathogens according to their frequency were the following Escherichia coli (6/26, 23%), Klebsiella pneumonia (5/26, 19%), Pseudomonas aeruginosa (3/26, 11%), Staphylococcus epidermidis (3/26, 11%), Acinetobacter baumanni (2/26, 7.7%), Enterococcus faecalis (2/26, 7.7%). The first trimester post renal transplantation 18 episodes (69%) of bacteremia were presented that were not correlated to indwelling urinary catheter or stent. Positive urinary culture with the same pathogen was recognized in 13 patients. All recipients manifested fever, eight recipients had leucocytosis and three cases were complicated by septic shock. Immediate resuscitation with intravenous fluids and non-nephrotoxic antibiotic regimen was initiated. Acute renal allograft dysfunction (defined as an increase in serum creatinine more than 0.5 mg/dL from baseline) was observed in five patients and was restored following infection resolution. Increased prevalence of bacteremia in renal transplant recipients is attributed to immunosuppression and usually bacteremic episodes follow urinary tract infection. The commonest pathogens are Gram negative bacteria with E. coli the most frequent. Early detection and proper management are important as bacteremia affects renal allograft and recipient survival.

  1. Cross-border quest: the reality and legality of transplant tourism.

    Science.gov (United States)

    Ambagtsheer, Frederike; Zaitch, Damián; van Swaaningen, René; Duijst, Wilma; Zuidema, Willij; Weimar, Willem

    2012-01-01

    Background. Transplant tourism is a phenomenon where patients travel abroad to purchase organs for transplants. This paper presents the results of a fieldwork study by describing the experiences of Dutch transplant professionals confronted by patients who allegedly purchased kidney transplants abroad. Second, it addresses the legal definition and prohibition of transplant tourism under national and international law. The final part addresses the legal implications of transplant tourism for patients and physicians. Methods. The study involved seventeen interviews among transplant physicians, transplant coordinators and policy-experts and a review of national and international legislation that prohibit transplant tourism. Results. All Dutch transplant centers are confronted with patients who undergo transplants abroad. The estimated total number is four per year. Transplant tourism is not explicitly defined under national and international law. While the purchase of organs is almost universally prohibited, transplant tourism is hardly punishable because national laws generally do not apply to crimes committed abroad. Moreover, the purchase of organs (abroad) is almost impossible to prove. Conclusions. Transplant tourism is a legally complex phenomenon that warrants closer research and dialogue. The legal rights and obligations of patients and physicians confronted with transplant tourism should be clarified.

  2. Optimal Nonlinear Pricing, Bundling Commodities and Contingent Services

    International Nuclear Information System (INIS)

    Podesta, Marion; Poudou, Jean-Christophe

    2008-01-01

    In this paper, we propose to analyze optimal nonlinear pricing when a firm offers in a bundle a commodity and a contingent service. The paper studies a mechanism design where all private information can be captured in a single scalar variable in a monopoly context. We show that to propose the package for commodity and service is less costly for the consumer, the firm has lower consumers' rent than the situation where it sells their good and contingent service under an independent pricing strategy. In fact, the possibility to use price discrimination via the supply of package is dominated by the fact that it is costly for the consumer to sign two contracts. Bundling energy and a contingent service is a profitable strategy for a energetician monopoly practising optimal nonlinear tariff. We show that the rates of the energy and the contingent service depend to the optional character of the contingent service and depend to the degree of complementarity between commodities and services. (authors)

  3. Contingency blindness: location-identity binding mismatches obscure awareness of spatial contingencies and produce profound interference in visual working memory.

    Science.gov (United States)

    Fiacconi, Chris M; Milliken, Bruce

    2012-08-01

    The purpose of the present study was to highlight the role of location-identity binding mismatches in obscuring explicit awareness of a strong contingency. In a spatial-priming procedure, we introduced a high likelihood of location-repeat trials. Experiments 1, 2a, and 2b demonstrated that participants' explicit awareness of this contingency was heavily influenced by the local match in location-identity bindings. In Experiment 3, we sought to determine why location-identity binding mismatches produce such low levels of contingency awareness. Our results suggest that binding mismatches can interfere substantially with visual-memory performance. We attribute the low levels of contingency awareness to participants' inability to remember the critical location-identity binding in the prime on a trial-to-trial basis. These results imply a close interplay between object files and visual working memory.

  4. Developing standardized facility contingency plans

    International Nuclear Information System (INIS)

    Davidson, D.A.

    1993-01-01

    Texaco consists of several operating departments that are, in effect, independent companies. Each of these departments is responsible for complying with all environmental laws and regulations. This includes the preparation by each facility to respond to an oil spill at that location. For larger spills, however, management of the response will rest with corporate regional response teams. Personnel from all departments make up the regional teams. In 1990, Congress passed the Oil Pollution Act. In 1991, the US Coast Guard began developing oil spill response contingency plan regulations, which they are still working on. Meanwhile, four of the five west coast states have also passed laws requiring contingency plans. (Only Hawaii has chosen to wait and see what the federal regulations will entail). Three of the states have already adopted regulations. Given these laws and regulations, along with its corporate structure, Texaco addressed the need to standardize local facility plans as well as its response organization. This paper discusses how, by working together, the Texaco corporate international oil spill response staff and the Texaco western region on-scene commander developed: A standard contingency plan format crossing corporate boundaries and meeting federal and state requirements. A response organization applicable to any size facility or spill. A strategy to sell the standard contingency plan and response organization to the operating units

  5. Skype me! Socially Contingent Interactions Help Toddlers Learn Language

    Science.gov (United States)

    Roseberry, Sarah; Hirsh-Pasek, Kathy; Golinkoff, Roberta Michnick

    2013-01-01

    Language learning takes place in the context of social interactions, yet the mechanisms that render social interactions useful for learning language remain unclear. This paper focuses on whether social contingency might support word learning. Toddlers aged 24- to 30-months (N=36) were exposed to novel verbs in one of three conditions: live interaction training, socially contingent video training over video chat, and non-contingent video training (yoked video). Results suggest that children only learned novel verbs in socially contingent interactions (live interactions and video chat). The current study highlights the importance of social contingency in interactions for language learning and informs the literature on learning through screen media as the first study to examine word learning through video chat technology. PMID:24112079

  6. QV modal distance displacement - a criterion for contingency ranking

    Energy Technology Data Exchange (ETDEWEB)

    Rios, M.A.; Sanchez, J.L.; Zapata, C.J. [Universidad de Los Andes (Colombia). Dept. of Electrical Engineering], Emails: mrios@uniandes.edu.co, josesan@uniandes.edu.co, cjzapata@utp.edu.co

    2009-07-01

    This paper proposes a new methodology using concepts of fast decoupled load flow, modal analysis and ranking of contingencies, where the impact of each contingency is measured hourly taking into account the influence of each contingency over the mathematical model of the system, i.e. the Jacobian Matrix. This method computes the displacement of the reduced Jacobian Matrix eigenvalues used in voltage stability analysis, as a criterion of contingency ranking, considering the fact that the lowest eigenvalue in the normal operation condition is not the same lowest eigenvalue in N-1 contingency condition. It is made using all branches in the system and specific branches according to the IBPF index. The test system used is the IEEE 118 nodes. (author)

  7. Hepatitis A Virus in Transplants

    Centers for Disease Control (CDC) Podcasts

    2017-05-17

    Dr. Monique Foster, a CDC epidemiologist, discusses an unusual case of hepatitis A virus in a transplant patient.  Created: 5/17/2017 by National Center for Emerging and Zoonotic Infectious Diseases (NCEZID).   Date Released: 5/17/2017.

  8. Contingent Employment in the Netherlands

    OpenAIRE

    Pot, F.; Koene, Bas; Paauwe, Jaap

    2001-01-01

    textabstractIn the last decade the Dutch labour market has demonstrated an admirable capacity to generate jobs. Consequently, the unemployment rate has significantly decreased. However, the newly generated jobs are a-typical in the sense that they are not full-time jobs based on open-ended contracts. Instead, the job growth has relied on the growth of part-time and contingent jobs. While the creation of part-time jobs seems to be employee-driven, contingent employment, in contrast, seems to b...

  9. Reducing liver transplant length of stay: a Lean Six Sigma approach.

    Science.gov (United States)

    Toledo, Alexander H; Carroll, Tracy; Arnold, Emily; Tulu, Zeynep; Caffey, Tom; Kearns, Lauren E; Gerber, David A

    2013-12-01

    Organ transplant centers are under increasing scrutiny to maintain outcomes while controlling cost in a challenging population of patients. Throughout health care and transplant specifically, length of stay is used as a benchmark for both quality and resource utilization. To decrease our length of stay for liver transplant by using Lean Six Sigma methods. The Six Sigma DMAIC (Define, Measure, Analyze, Improve, Control) method was used to systematically analyze our process from transplant listing to hospital discharge after transplant, identifying many factors affecting length of stay. Adult, single-organ, primary liver transplant recipients between July 2008 and June 2012 were included in the study. Recipients with living donors or fulminant liver failure were excluded. Multiple interventions, including a clinical pathway and enhanced communication, were implemented. Length of stay after liver transplant and readmission after liver transplant.R ESULTS: Median length of stay decreased significantly from 11 days before the intervention to 8 days after the intervention. Readmission rate did not change throughout the study. The improved length of stay was maintained for 24 months after the study. Using a Lean Six Sigma approach, we were able to significantly decrease the length of stay of liver transplant patients. These results brought our center's outcomes in accordance with our goal and industry benchmark of 8 days. Clear expectations, improved teamwork, and a multidisciplinary clinical pathway were key elements in achieving and maintaining these gains.

  10. Contingency Management and deliberative decision-making processes

    Directory of Open Access Journals (Sweden)

    Paul S. Regier

    2015-06-01

    Full Text Available Contingency Management is an effective treatment for drug addiction. The current explanation for its success is rooted in alternative reinforcement theory. We suggest that alternative reinforcement theory is inadequate to explain the success of Contingency Management and produce a model based on demand curves that show how little the monetary rewards offered in this treatment would affect drug use. Instead, we offer an explanation of its success based on the concept that it accesses deliberative decision-making processes. We suggest that Contingency Management is effective because it offers a concrete and immediate alternative to using drugs, which engages deliberative processes, improves the ability of those deliberative processes to attend to non-drug options, and offsets more automatic action-selection systems. This theory makes explicit predictions that can be tested, suggests which users will be most helped by Contingency Management, and suggests improvements in its implementation.

  11. Contingency Management and Deliberative Decision-Making Processes.

    Science.gov (United States)

    Regier, Paul S; Redish, A David

    2015-01-01

    Contingency management is an effective treatment for drug addiction. The current explanation for its success is rooted in alternative reinforcement theory. We suggest that alternative reinforcement theory is inadequate to explain the success of contingency management and produce a model based on demand curves that show how little the monetary rewards offered in this treatment would affect drug use. Instead, we offer an explanation of its success based on the concept that it accesses deliberative decision-making processes. We suggest that contingency management is effective because it offers a concrete and immediate alternative to using drugs, which engages deliberative processes, improves the ability of those deliberative processes to attend to non-drug options, and offsets more automatic action-selection systems. This theory makes explicit predictions that can be tested, suggests which users will be most helped by contingency management, and suggests improvements in its implementation.

  12. Haptoglobin 2-2 Genotype, Patient, and Graft Survival in Renal Transplant Recipients

    DEFF Research Database (Denmark)

    Dupont, Laust; Eide, Ivar Anders; Hartmann, Anders

    2017-01-01

    Background: Cardiovascular disease is the leading cause of death in renal transplant recipients. An association between haptoglobin genotype 2-2 and cardiovascular disease has been found in patients with diabetes mellitus and liver transplant recipients. To date, the role of haptoglobin genotype...... after renal transplantation has not been studied. Methods: In this single-center retrospective cohort study of 1975 adult Norwegian transplant recipients, who underwent transplantation between 1999 and 2011, we estimated the risk of all-cause and cardiovascular mortality and overall and death...... transplant recipients, we could not demonstrate any association between haptoglobin 2-2 genotype and patient or graft survival after renal transplantation....

  13. Integrating kidney transplantation into value-based care for people with renal failure.

    Science.gov (United States)

    Hippen, Benjamin E; Maddux, Franklin W

    2018-01-01

    Healthcare reimbursement is increasingly tied to value instead of volume, with special attention paid to resource-intensive populations such as patients with renal disease. To this end, Medicare has sponsored pilot projects to encourage providers to develop care coordination and population health management strategies to provide quality care while reducing resource utilization. In this Personal Viewpoint essay, we argue in favor of expanding one such pilot project-the Comprehensive ESRD Care (CEC) initiative-to include patients with advanced chronic kidney disease and kidney transplant recipients. The implementation of the Medicare Access and CHIP Reauthorization Act (MACRA) offers a time-sensitive incentive for transplant centers in particular to align with extant CECs. An "expanded" CEC model proffers opportunity for robust cooperation between general nephrology practices, dialysis providers, and transplant centers to develop care coordination strategies for all patients with renal disease, realign incentives for all clinical stakeholders to increase kidney transplantation rates, and reduce total costs of care. © 2017 The American Society of Transplantation and the American Society of Transplant Surgeons.

  14. Reduced-Intensity Transplantation for Lymphomas Using Haploidentical Related Donors Versus HLA-Matched Sibling Donors: A Center for International Blood and Marrow Transplant Research Analysis

    Science.gov (United States)

    Ghosh, Nilanjan; Karmali, Reem; Rocha, Vanderson; Ahn, Kwang Woo; DiGilio, Alyssa; Hari, Parameswaran N.; Bachanova, Veronika; Bacher, Ulrike; Dahi, Parastoo; de Lima, Marcos; D’Souza, Anita; Fenske, Timothy S.; Ganguly, Siddhartha; Kharfan-Dabaja, Mohamed A.; Prestidge, Tim D.; Savani, Bipin N.; Smith, Sonali M.; Sureda, Anna M.; Waller, Edmund K.; Jaglowski, Samantha; Herrera, Alex F.; Armand, Philippe; Salit, Rachel B.; Wagner-Johnston, Nina D.; Fuchs, Ephraim; Bolaños-Meade, Javier

    2016-01-01

    Purpose Related donor haploidentical hematopoietic cell transplantation (Haplo-HCT) using post-transplantation cyclophosphamide (PT-Cy) is increasingly used in patients lacking HLA-matched sibling donors (MSD). We compared outcomes after Haplo-HCT using PT-Cy with MSD-HCT in patients with lymphoma, using the Center for International Blood and Marrow Transplant Research registry. Materials and Methods We evaluated 987 adult patients undergoing either Haplo-HCT (n = 180) or MSD-HCT (n = 807) following reduced-intensity conditioning regimens. The haploidentical group received graft-versus-host disease (GVHD) prophylaxis with PT-Cy with or without a calcineurin inhibitor and mycophenolate. The MSD group received calcineurin inhibitor–based GVHD prophylaxis. Results Median follow-up of survivors was 3 years. The 28-day neutrophil recovery was similar in the two groups (95% v 97%; P = .31). The 28-day platelet recovery was delayed in the haploidentical group compared with the MSD group (63% v 91%; P = .001). Cumulative incidence of grade II to IV acute GVHD at day 100 was similar between the two groups (27% v 25%; P = .84). Cumulative incidence of chronic GVHD at 1 year was significantly lower after Haplo-HCT (12% v 45%; P < .001), and this benefit was confirmed on multivariate analysis (relative risk, 0.21; 95% CI, 0.14 to 0.31; P < .001). For Haplo-HCT v MSD-HCT, 3-year rates of nonrelapse mortality (15% v 13%; P = .41), relapse/progression (37% v 40%; P = .51), progression-free survival (48% v 48%; P = .96), and overall survival (61% v 62%; P = .82) were similar. Multivariate analysis showed no significant difference between Haplo-HCT and MSD-HCT in terms of nonrelapse mortality (P = .06), progression/relapse (P = .10), progression-free survival (P = .83), and overall survival (P = .34). Conclusion Haplo-HCT with PT-Cy provides survival outcomes comparable to MSD-HCT, with a significantly lower risk of chronic GVHD. PMID:27269951

  15. Turning negative memories around: Contingency versus devaluation techniques.

    Science.gov (United States)

    Dibbets, Pauline; Lemmens, Anke; Voncken, Marisol

    2018-09-01

    It is assumed that fear responses can be altered by changing the contingency between a conditioned stimulus (CS) and an unconditioned stimulus (US), or by devaluing the present mental representation of the US. The aim of the present study was to compare the efficacy of contingency- and devaluation-based intervention techniques on the diminishment in - and return of fear. We hypothesized that extinction (EXT, contingency-based) would outperform devaluation-based techniques regarding contingency measures, but that devaluation-based techniques would be most effective in reducing the mental representation of the US. Additionally, we expected that incorporations of the US during devaluation would result in less reinstatement of the US averseness. Healthy participants received a fear conditioning paradigm followed by one of three interventions: extinction (EXT, contingency-based), imagery rescripting (ImRs, devaluation-based) or eye movement desensitization and reprocessing (EMDR, devaluation-based). A reinstatement procedure and test followed the next day. EXT was indeed most successful in diminishing contingency-based US expectancies and skin conductance responses (SCRs), but all interventions were equally successful in reducing the averseness of the mental US representation. After reinstatement EXT showed lowest expectancies and SCRs; no differences were observed between the conditions concerning the mental US representation. A partial reinforcement schedule was used, resulting in a vast amount of contingency unaware participants. Additionally, a non-clinical sample was used, which may limit the generalizability to clinical populations. EXT is most effective in reducing conditioned fear responses. Copyright © 2018 Elsevier Ltd. All rights reserved.

  16. Learning New Sensorimotor Contingencies: Effects of Long-Term Use of Sensory Augmentation on the Brain and Conscious Perception

    Science.gov (United States)

    Schumann, Frank; Keyser, Johannes; Goeke, Caspar; Krause, Carina; Wache, Susan; Lytochkin, Aleksey; Ebert, Manuel; Brunsch, Vincent; Wahn, Basil; Kaspar, Kai; Nagel, Saskia K.; Meilinger, Tobias; Bülthoff, Heinrich; Wolbers, Thomas; Büchel, Christian; König, Peter

    2016-01-01

    Theories of embodied cognition propose that perception is shaped by sensory stimuli and by the actions of the organism. Following sensorimotor contingency theory, the mastery of lawful relations between own behavior and resulting changes in sensory signals, called sensorimotor contingencies, is constitutive of conscious perception. Sensorimotor contingency theory predicts that, after training, knowledge relating to new sensorimotor contingencies develops, leading to changes in the activation of sensorimotor systems, and concomitant changes in perception. In the present study, we spell out this hypothesis in detail and investigate whether it is possible to learn new sensorimotor contingencies by sensory augmentation. Specifically, we designed an fMRI compatible sensory augmentation device, the feelSpace belt, which gives orientation information about the direction of magnetic north via vibrotactile stimulation on the waist of participants. In a longitudinal study, participants trained with this belt for seven weeks in natural environment. Our EEG results indicate that training with the belt leads to changes in sleep architecture early in the training phase, compatible with the consolidation of procedural learning as well as increased sensorimotor processing and motor programming. The fMRI results suggest that training entails activity in sensory as well as higher motor centers and brain areas known to be involved in navigation. These neural changes are accompanied with changes in how space and the belt signal are perceived, as well as with increased trust in navigational ability. Thus, our data on physiological processes and subjective experiences are compatible with the hypothesis that new sensorimotor contingencies can be acquired using sensory augmentation. PMID:27959914

  17. Learning New Sensorimotor Contingencies: Effects of Long-Term Use of Sensory Augmentation on the Brain and Conscious Perception.

    Science.gov (United States)

    König, Sabine U; Schumann, Frank; Keyser, Johannes; Goeke, Caspar; Krause, Carina; Wache, Susan; Lytochkin, Aleksey; Ebert, Manuel; Brunsch, Vincent; Wahn, Basil; Kaspar, Kai; Nagel, Saskia K; Meilinger, Tobias; Bülthoff, Heinrich; Wolbers, Thomas; Büchel, Christian; König, Peter

    2016-01-01

    Theories of embodied cognition propose that perception is shaped by sensory stimuli and by the actions of the organism. Following sensorimotor contingency theory, the mastery of lawful relations between own behavior and resulting changes in sensory signals, called sensorimotor contingencies, is constitutive of conscious perception. Sensorimotor contingency theory predicts that, after training, knowledge relating to new sensorimotor contingencies develops, leading to changes in the activation of sensorimotor systems, and concomitant changes in perception. In the present study, we spell out this hypothesis in detail and investigate whether it is possible to learn new sensorimotor contingencies by sensory augmentation. Specifically, we designed an fMRI compatible sensory augmentation device, the feelSpace belt, which gives orientation information about the direction of magnetic north via vibrotactile stimulation on the waist of participants. In a longitudinal study, participants trained with this belt for seven weeks in natural environment. Our EEG results indicate that training with the belt leads to changes in sleep architecture early in the training phase, compatible with the consolidation of procedural learning as well as increased sensorimotor processing and motor programming. The fMRI results suggest that training entails activity in sensory as well as higher motor centers and brain areas known to be involved in navigation. These neural changes are accompanied with changes in how space and the belt signal are perceived, as well as with increased trust in navigational ability. Thus, our data on physiological processes and subjective experiences are compatible with the hypothesis that new sensorimotor contingencies can be acquired using sensory augmentation.

  18. Learning New Sensorimotor Contingencies: Effects of Long-Term Use of Sensory Augmentation on the Brain and Conscious Perception.

    Directory of Open Access Journals (Sweden)

    Sabine U König

    Full Text Available Theories of embodied cognition propose that perception is shaped by sensory stimuli and by the actions of the organism. Following sensorimotor contingency theory, the mastery of lawful relations between own behavior and resulting changes in sensory signals, called sensorimotor contingencies, is constitutive of conscious perception. Sensorimotor contingency theory predicts that, after training, knowledge relating to new sensorimotor contingencies develops, leading to changes in the activation of sensorimotor systems, and concomitant changes in perception. In the present study, we spell out this hypothesis in detail and investigate whether it is possible to learn new sensorimotor contingencies by sensory augmentation. Specifically, we designed an fMRI compatible sensory augmentation device, the feelSpace belt, which gives orientation information about the direction of magnetic north via vibrotactile stimulation on the waist of participants. In a longitudinal study, participants trained with this belt for seven weeks in natural environment. Our EEG results indicate that training with the belt leads to changes in sleep architecture early in the training phase, compatible with the consolidation of procedural learning as well as increased sensorimotor processing and motor programming. The fMRI results suggest that training entails activity in sensory as well as higher motor centers and brain areas known to be involved in navigation. These neural changes are accompanied with changes in how space and the belt signal are perceived, as well as with increased trust in navigational ability. Thus, our data on physiological processes and subjective experiences are compatible with the hypothesis that new sensorimotor contingencies can be acquired using sensory augmentation.

  19. Extracorporeal membrane oxygenation as a bridge to lung transplantation: A single-center experience in the present era.

    Science.gov (United States)

    Todd, Emily M; Biswas Roy, Sreeja; Hashimi, A Samad; Serrone, Rosemarie; Panchanathan, Roshan; Kang, Paul; Varsch, Katherine E; Steinbock, Barry E; Huang, Jasmine; Omar, Ashraf; Patel, Vipul; Walia, Rajat; Smith, Michael A; Bremner, Ross M

    2017-11-01

    Extracorporeal membrane oxygenation has been used as a bridge to lung transplantation in patients with rapid pulmonary function deterioration. The reported success of this modality and perioperative and functional outcomes are varied. We retrospectively reviewed all patients who underwent lung transplantation at our institution over 1 year (January 1, 2015, to December 31, 2015). Patients were divided into 2 groups depending on whether they required extracorporeal membrane oxygenation support as a bridge to transplant; preoperative characteristics, lung transplantation outcomes, and survival were compared between groups. Of the 93 patients, 12 (13%) received bridge to transplant, and 81 (87%) did not. Patients receiving bridge to transplant were younger, had higher lung allocation scores, had lower functional status, and were more often on mechanical ventilation at listing. Most patients who received bridge to transplant (n = 10, 83.3%) had pulmonary fibrosis. Mean pretransplant extracorporeal membrane oxygenation support was 103.6 hours in duration (range, 16-395 hours). All patients who received bridge to transplant were decannulated immediately after lung transplantation but were more likely to return to the operating room for secondary chest closure or rethoracotomy. Grade 3 primary graft dysfunction within 72 hours was similar between groups. Lung transplantation success and hospital discharge were 100% in the bridge to transplant group; however, these patients experienced longer hospital stays and higher rates of discharge to acute rehabilitation. The 1-year survival was 100% in the bridge to transplant group and 91% in the non-bridge to transplant group (log-rank, P = .24). The 1-year functional status was excellent in both groups. Extracorporeal membrane oxygenation can be used to safely bridge high-acuity patients with end-stage lung disease to lung transplantation with good 30-day, 90-day, and 1-year survival and excellent 1-year functional status

  20. Organ donation and transplantation: Awareness and roles of healthcare professionals-A systematic literature review.

    Science.gov (United States)

    Jawoniyi, Oluwafunmilayo; Gormley, Kevin; McGleenan, Emma; Noble, Helen Rose

    2018-03-01

    To examine the role of healthcare professionals in the organ donation and transplantation process. Globally, there remains a perennial disequilibrium between organ donation and organ transplantation. Several factors account for this disequilibrium; however, as healthcare professionals are not only strategically positioned as the primary intermediaries between organ donors and transplant recipients, but also professionally situated as the implementers of organ donation and transplantation processes, they are often blamed for the global organ shortage. Mixed-method systematic review using the Preferred Reporting Items for Systematic review and Meta-Analysis Protocols 2015 checklist. Databases were searched including CINAHL, MEDLINE, Web of Science and EMBASE using the search terms "organ donation," "healthcare professionals," "awareness" and "roles" to retrieve relevant publications. Thirteen publications met the inclusion criteria. The global organ shortage is neither contingent upon unavailability of suitable organs nor exclusively dependent upon healthcare professionals. Instead, the existence of disequilibrium between organ donation and transplantation is necessitated by a web of factors. These include the following: healthcare professionals' attitudes towards, and experience of, the organ donation and transplantation process, underpinned by professional education, specialist clinical area and duration of professional practice; conflicts of interests; ethical dilemmas; altruistic values towards organ donation; and varied organ donation legislations in different legal jurisdictions. This review maintains that if this web of factors is to be adequately addressed by healthcare systems in different global and legal jurisdictions, there should be sufficient organs voluntarily donated to meet all transplantation needs. There is a suggestion that healthcare professionals partly account for the global shortage in organ donation, but there is a need to examine how

  1. Breaking the Myth of Flexible Work: Contingent Work in Toronto. A Study Conducted by the Contingent Workers Project.

    Science.gov (United States)

    de Wolff, Alice

    A survey of 205 people, 4 group interviews with approximately 30 people, and 6 design and analysis meetings involving approximately 40 people were conducted in a 1999 participatory study of contingent workers in Toronto. (Contingent work was defined to be lower-waged forms of non-permanent work arrangements that include contracting, employment…

  2. Four-Way Kidney Exchange Transplant With Desensitization Increases Access to Living-Donor Kidney Transplant: First Report From India.

    Science.gov (United States)

    Kute, Vivek B; Patel, Himanshu V; Shah, Pankaj R; Modi, Pranjal R; Shah, Veena R; Kasat, Govind S; Patil, Mayur V; Patel, Jaydeep C; Kumar, Deepak P; Trivedi, Hargovind L

    2017-09-26

    This study reports our experience of the first 4-way kidney exchange transplant combined with desensitization in India, which allows increased access to living-donor kidney transplant for sensitized patients. Four-way kidney exchange transplant procedures were approved by the ethics committee of our institution and the Organ Transplantation Authorization Committee of state governments of India (as per the Transplantation of Human Organs Act of India). The protocols conformed to Declaration of Istanbul principles and the ethical guidelines of the 1975 Helsinki Declaration. Written informed consent was obtained from patients, donors, and their guardians. In April 2016, our transplant team completed simultaneous 4-way kidney exchange transplant procedures without any medical (rejection and infections) or surgical complications. Reasons for being included for kidney exchange transplant were ABO incom-patible (2 recipients) and sensitization (2 recipients). All 4 recipients had stable graft function with no proteinuria and donor-specific antibody at 11-month follow-up on standard triple immunosup-pression. Patient and graft survival rates were both 100%. To the best of our knowledge, this is the first single-center report of 4-way kidney exchange transplant combined with desensitization from India. This procedure has the potential to expand living-donor kidney transplant in disadvantaged groups (eg, sensitized patients). Recipients who are hard to match due to high panel reactive antibody and difficult to desensitize due to strong donor-specific antibodies can receive a transplant with a combination of kidney exchange and desensitization. Our study suggests that 4-way kidney exchange transplant can be performed in developing countries (India) similar to that shown in programs in developed countries with team work, kidney exchange registry, and counseling.

  3. Reporting, Recording, and Transferring Contingency Demand Data

    National Research Council Canada - National Science Library

    Smith, Bernard

    2000-01-01

    .... In this report, we develop a standard set of procedures for reporting and recording demand data at the contingency location and transferring contingency demand data to the home base - ensuring proper level allocation and valid worldwide peacetime operating stock (POS) and readiness spares package (RSP) requirements.

  4. Sartre's Contingency of Being and Asouzu's Principle of Causality ...

    African Journals Online (AJOL)

    The position of this work is that all contingent beings have a causal agent. This position is taken as a result of trying to delve into the issue of contingency and causality of being which has been discussed by many philosophers of diverse epochs of philosophy. This work tries to participate in the debate of whether contingent ...

  5. The policies of organ transplantation in Europe: issues and problems.

    Science.gov (United States)

    Defever, M

    1990-11-01

    Transplantation has evolved from an experiment to a routinely performed procedure for a widening range of organs. Transplantation in Europe is dominated by the scarcity of organs from deceased donors leading to problems of selection criteria for recipients, of legal protection for donors and of the empowerment of agencies for allocative decisions. Although public involvement is very emotional, there has been a benign neglect in several European countries by policy makers, accepting implicitly organ transplantation leading to a variety of programs for diffusion, organization, and financing of transplantation. Non-transplanting hospitals play a key role in organ procurement and transplant centers are increasingly subject to quality assessment, whereby the issue of the relation between improved outcome at higher volumes comes to the forefront. International cooperation is critical for the development of effective transplant programs in Europe.

  6. 40 CFR 267.54 - When must I amend the contingency plan?

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 26 2010-07-01 2010-07-01 false When must I amend the contingency plan... STANDARDIZED PERMIT Contingency Plan and Emergency Procedures § 267.54 When must I amend the contingency plan? You must review, and immediately amend the contingency plan, if necessary, whenever: (a) The facility...

  7. Kidney transplant and the digital divide: is information and communication technology a barrier or a bridge to transplant for African Americans?

    Science.gov (United States)

    Lockwood, Mark B; Saunders, Milda R; Lee, Christopher S; Becker, Yolanda T; Josephson, Michelle A; Chon, W James

    2013-12-01

    Barriers to kidney transplant for African Americans are well documented in the literature. Little information on ownership of information and communication technology and use of such technology in transplant populations has been published. To characterize racial differences related to ownership and use of information and communication technology in kidney transplant patients. A single-center, cross-sectional survey study. An urban Midwestern transplant center. 78 pretransplant patients and 177 transplant recipients. The survey consisted of 6 demographic questions, 3 disease-related questions, and 9 technology-related questions. Dichotomous (yes/no) and Likert-scale items were the basis for the survey. Cell phone use was high and comparable between groups (94% in African Americans, 90% in whites, P= .22). A vast majority (75% of African Americans and 74% of whites) reported being "comfortable" sending and receiving text messages. Computer ownership (94.3% vs 79.3%) and Internet access (97.7% vs 80.7%) were greater among whites than African Americans (both PInternet (27.1% vs 56.3%) and e-mail (61.6% vs 79.3%) than whites (both Ptechnology and text messaging was ubiquitous and comparable between groups, but computer and Internet access and frequency of use were not. Reaching out to the African American community may best be accomplished by using cell phone/text messaging as opposed to Internet-based platforms.

  8. [Rare diagnostics of infective endocarditis after kidney transplantation].

    Science.gov (United States)

    Dedinská, Ivana; Skalová, Petra; Mokáň, Michal; Martiaková, Katarína; Osinová, Denisa; Pindura, Miroslav; Palkoci, Blažej; Vojtko, Marián; Hubová, Janka; Kadlecová, Denisa; Lendová, Ivona; Zacharovský, Radovan; Pekar, Filip; Kaliská, Lucia

    2016-01-01

    Infective endocarditis in a patient after kidney transplantation is a serious infective complication which increases the risk of loss of the graft and also the mortality of patients. The most important predisposing factor is the immunosuppressive therapy - mainly induction immunosuppression.Material and case description: 250 patients underwent kidney transplantation throughout the period of 12 years in the Transplant Center Martin. This set of patients included 5 patients (2 %) after heart valve replacement. We present the case of a patient after kidney transplantation with development of endocarditis of the bioprosthesis of the aortic valve one month after successful kidney transplantation. Diagnostics of endocarditis by standard procedures (examination by transthoracic echocardiogram, transesophageal echocardiography, hemocultures) was unsuccessful. We rarely diagnosed endocarditis only by PET-CT examination with a consequent change of the antibiotic treatment and successful managing of this post-transplant complication. Endocarditis after kidney transplantation is a serious complication which significantly worsens the mortality of patients. The risk of development of infective endocarditis after transplantation is also increased by induction, mainly by antithymocyte globulin. Diagnostics only by PET-CT examination is rare; however, in this case it fundamentally changed the approach to the patient and led to a successful treatment.

  9. Incidence of and risk factors for skin cancer after heart transplant

    NARCIS (Netherlands)

    Brewer, Jerry D.; Colegio, Oscar R.; Phillips, P. Kim; Roenigk, Randall K.; Jacobs, M. Amanda; van de Beek, Diederik; Dierkhising, Ross A.; Kremers, Walter K.; McGregor, Christopher G. A.; Otley, Clark C.

    2009-01-01

    OBJECTIVE: To examine the incidence, tumor burden, and risk factors for nonmelanoma and other skin cancer types in this heart transplant cohort. DESIGN: Retrospective review of patient medical records. SETTING: Tertiary care center. Patients All heart transplant recipients at Mayo Clinic from 1988

  10. The first clinical liver transplantation of Brazil revisited.

    Science.gov (United States)

    Bacchella, T; Machado, M C C

    2004-05-01

    The first clinical orthotopic liver transplantation in Brazil was performed on August 5, 1968. The patient was awake after surgery and died on the seventh postoperative day due to subdural hematoma, bronchopneumonia, renal failure, and graft rejection. The report of this case is important to understand the evolution of clinical liver transplantation in Brazil, where this procedure is now routinely carried out in many medical centers.

  11. 25 CFR 39.503 - How can a school use contingency funds?

    Science.gov (United States)

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false How can a school use contingency funds? 39.503 Section 39.503 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR EDUCATION THE INDIAN SCHOOL EQUALIZATION PROGRAM Contingency Fund § 39.503 How can a school use contingency funds? Contingency funds can be...

  12. Donor-recipient human leukocyte antigen matching practices in vascularized composite tissue allotransplantation: a survey of major transplantation centers.

    Science.gov (United States)

    Ashvetiya, Tamara; Mundinger, Gerhard S; Kukuruga, Debra; Bojovic, Branko; Christy, Michael R; Dorafshar, Amir H; Rodriguez, Eduardo D

    2014-07-01

    Vascularized composite tissue allotransplant recipients are often highly sensitized to human leukocyte antigens because of multiple prior blood transfusions and other reconstructive operations. The use of peripheral blood obtained from dead donors for crossmatching may be insufficient because of life support measures taken for the donor before donation. No study has been published investigating human leukocyte antigen matching practices in this field. A survey addressing human leukocyte antigen crossmatching methods was generated and sent to 22 vascularized composite tissue allotransplantation centers with active protocols worldwide. Results were compiled by center and compared using two-tailed t tests. Twenty of 22 centers (91 percent) responded to the survey. Peripheral blood was the most commonly reported donor sample for vascularized composite tissue allotransplant crossmatching [78 percent of centers (n=14)], with only 22 percent (n=4) using lymph nodes. However, 56 percent of the 18 centers (n=10) that had performed vascularized composite tissue allotransplantation reported that they harvested lymph nodes for crossmatching. Of responding individuals, 62.5 percent (10 of 16 individuals) felt that lymph nodes were the best donor sample for crossmatching. A slight majority of vascularized composite tissue allotransplant centers that have performed clinical transplants have used lymph nodes for human leukocyte antigen matching, and centers appear to be divided on the utility of lymph node harvest. The use of lymph nodes may offer a number of potential benefits. This study highlights the need for institutional review board-approved crossmatching protocols specific to vascularized composite tissue allotransplantation, and the need for global databases for sharing of vascularized composite tissue allotransplantation experiences.

  13. Estimating state-contingent production functions

    DEFF Research Database (Denmark)

    Rasmussen, Svend; Karantininis, Kostas

    The paper reviews the empirical problem of estimating state-contingent production functions. The major problem is that states of nature may not be registered and/or that the number of observation per state is low. Monte Carlo simulation is used to generate an artificial, uncertain production...... environment based on Cobb Douglas production functions with state-contingent parameters. The pa-rameters are subsequently estimated based on different sizes of samples using Generalized Least Squares and Generalized Maximum Entropy and the results are compared. It is concluded that Maximum Entropy may...

  14. The price of donation after cardiac death in liver transplantation : a prospective cost-effectiveness study

    NARCIS (Netherlands)

    van der Hilst, Christian S.; IJtsma, Alexander J. C.; Bottema, Jan T.; van Hoek, Bart; Dubbeld, Jeroen; Metselaar, Herold J.; Kazemier, Geert; van den Berg, Aad P.; Porte, Robert J.; Slooff, Maarten J. H.

    This study aims to perform a detailed prospective observational multicenter cost-effectiveness study by comparing liver transplantations with Donation after Brain Death (DBD) and Donation after Cardiac Death (DCD) grafts. All liver transplantations in the three Dutch liver transplant centers between

  15. Prognostic Factors for Tumor Recurrence after a 12-Year, Single-Center Experience of Liver Transplantations in Patients with Hepatocellular Carcinoma

    Directory of Open Access Journals (Sweden)

    Matteo Cescon

    2010-01-01

    Full Text Available Background. Factors affecting outcomes after orthotopic liver transplantation (OLT for hepatocellular carcinoma (HCC have been extensively studied, but some of them have only recently been discovered or reassessed. Methods. We analyzed classical and more recently emerging variables with a hypothetical impact on recurrence-free survival (RFS in a single-center series of 283 patients transplanted for HCC between 1997 and 2009. Results. Five-year patient survival and RFS were 75% and 86%, respectively. Thirty-four (12% patients had HCC recurrence. Elevated preoperative alpha-fetoprotein (AFP levels, preoperative treatments of HCC, unfulfilled Milan and up-to-seven criteria at final histology, poor tumor differentiation, and tumor microvascular invasion negatively affected RFS by univariate analysis. Milan and up-to-seven criteria applied preoperatively, and the use of m-TOR inhibitors did not reach statistical significance. Cox's proportional hazard model showed that only elevated AFP levels (Odds Ratio=2.88; 95% C.I.=1.43–5.80; =.003, preoperative tumor treatments (Odds Ratio=4.84; 95% C.I.=1.42–16.42; =.01, and microvascular invasion (Odds Ratio=4.82; 95% C.I.=1.87–12.41; =.001 were predictors of lower RFS. Conclusions. Biological aggressiveness and preoperative tumor treatment, rather than traditional and expanded dimensional criteria, conditioned the outcomes in patients transplanted for HCC.

  16. 25 CFR 39.501 - What is an emergency or unforeseen contingency?

    Science.gov (United States)

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false What is an emergency or unforeseen contingency? 39.501... EQUALIZATION PROGRAM Contingency Fund § 39.501 What is an emergency or unforeseen contingency? An emergency or unforeseen contingency is an event that meets all of the following criteria: (a) It could not be planned for...

  17. 78 FR 46781 - Federal Acquisition Regulation; Definition of Contingency Operation

    Science.gov (United States)

    2013-08-01

    ... Federal Acquisition Regulation; Definition of Contingency Operation AGENCY: Department of Defense (DoD... the Federal Acquisition Regulation (FAR) to revise the definition of ``contingency operation'' to... ``contingency operation'' at FAR 2.101 in accordance with the statutory change to the definition made by...

  18. The double-contingency principle: An historical perspective

    International Nuclear Information System (INIS)

    Knief, R.A.

    1995-01-01

    Standard ANSI/ANS-8.1 states the double contingency principle as: Process designs should, in general, incorporate sufficient factors of safety to require at least two unlikely, independent, and concurrent changes in process conditions before a criticality accident is possible. This paper presents a perspective on the double contingency principle

  19. 40 CFR 300.210 - Federal contingency plans.

    Science.gov (United States)

    2010-07-01

    ... contingency plans under the national response system: The National Contingency Plan, RCPs, and ACPs. These... discharge under § 300.324, and to mitigate or prevent a substantial threat of such a discharge, from a vessel, offshore facility, or onshore facility operating in or near the area. (2) The areas of...

  20. RENAL ALLOGENEIC TRANSPLANTATION IN PATIENT WITH HAEMOPHILIA B

    Directory of Open Access Journals (Sweden)

    N. V. Purlo

    2014-01-01

    Full Text Available We report the case of successful renal allogeneic transplantation and treatment in a 56-year-old patient with haemophilia B at Hematology Research Center. He has received replacement therapy by factor IX since 2010. The transplant is marked with good renal function during 13 post-transplant months without episodes of rejection or bleeding complications. The complicated surgical interventions are possible in patients with haemophilia В аnd end-stage chronic renal failure in the presence of replacement therapy of IX factor for the purpose of achievement of optimum hemostasis.

  1. Comparative study between kidney transplantation with deceased donor expanded criteria and donor standard criteria in a single center in Brazil.

    Science.gov (United States)

    Mota, Luana Soriano; Oliveira, Claudia Maria Costa de; Pinheiro, Francisco Martho Leal; Santos, Larissa Costa de Oliveira; Nóbrega, Danilo Gonçalves; Fernandes, Paula Fbc; Costa, Alda Angélica de Melo; Silva, Sônia Leite da

    2016-01-01

    Kidney transplants with expanded criteria donor have been associated with improved patient survival compared to those who remain on dialysis. To compare renal function and survival of the kidney graft of deceased donor with expanded criteria and standard criteria over a year in a single transplant center. 255 kidney transplant recipients with deceased donor were included in the study between the years 2011 to 2013 and they were separated into two groups according to the type of donor (expanded criteria donor - ECD - and standard criteria donor - SCD). 231 deceased donor transplants (90.6%) were performed with standard criteria donor (SCD) and 24 (9.4%) with expanded criteria donor (ECD). There was no difference in the prevalence of delayed graft function - DGF - (62.9% vs. 70.8%; p = 0.44). Expanded criteria donor group had lower glomerular filtration rate (GFR) at the end of the 1st year (56.8 ± 26.9 vs. 76.9 ± 23.7; p = 0.001). Patient survival was significantly lower in the ECD group, but the graft survival was not different after death-censored analysis. The ECD group was associated with significantly lower levels of GFR during the first year of transplant and a lower patient survival at the 1st year when compared to the SCD. A aceitação dos rins com critério expandido de doação tem sido associada com melhor sobrevida do paciente em comparação àqueles que permanecem em terapia dialítica. Comparar a função renal e a sobrevida do enxerto renal de doador falecido critério expandido com os de doador falecido critério padrão ao longo de um ano em um único centro de transplantes. Foram incluídos 255 receptores de transplante renal com doador falecido, realizados entre os anos de 2011 a 2013, sendo divididos em dois grupos segundo o tipo de doador (critério expandido - DCE - ou padrão -DCP). Foram avaliados 231 receptores com doador critério ideal (90,6%) e 24 com doador critério expandido (9,4%). Não houve diferença na prevalência de fun

  2. Management issues regarding the contingent workforce

    Energy Technology Data Exchange (ETDEWEB)

    Bowen-Smed, S. [Bowen Workforce Solutions, Calgary, AB (Canada)

    2004-07-01

    Fifty per cent of corporate leaders in Calgary today will be eligible for retirement over the next 5 years. In addition, 53 per cent of the entire Calgary workforce is 45 years or older. This paper suggests that only companies that seek aggressive programs to engage immigrants and contractors will weather the skills shortages anticipated in the future. It was noted that contractors care about aligning values to organizations, regardless of the project length, and that professional development is a key consideration when it comes to selecting their next project. Contingent workforce issues include: effectiveness; classification; risk; and cost. It was stated that effectiveness of the contingent workforce is an employer's responsibility. Factors that would strengthen the relationship between corporations and contractors include: proper orientation to manage expectations; training to improve productivity; tracking to enhance the quality of the workforce; and a management process to ensure adherence to protocol. It was concluded that the contingent workforce is an essential component to human capital management strategy, but that key issues must be managed to avoid unnecessary costs. In addition, effectiveness improves when processes are implemented. It was also suggested that technology is an essential component of the solution. Outsourcing is an effective approach to managing the contingent workforce. tabs., figs.

  3. Sound-contingent visual motion aftereffect

    Directory of Open Access Journals (Sweden)

    Kobayashi Maori

    2011-05-01

    Full Text Available Abstract Background After a prolonged exposure to a paired presentation of different types of signals (e.g., color and motion, one of the signals (color becomes a driver for the other signal (motion. This phenomenon, which is known as contingent motion aftereffect, indicates that the brain can establish new neural representations even in the adult's brain. However, contingent motion aftereffect has been reported only in visual or auditory domain. Here, we demonstrate that a visual motion aftereffect can be contingent on a specific sound. Results Dynamic random dots moving in an alternating right or left direction were presented to the participants. Each direction of motion was accompanied by an auditory tone of a unique and specific frequency. After a 3-minutes exposure, the tones began to exert marked influence on the visual motion perception, and the percentage of dots required to trigger motion perception systematically changed depending on the tones. Furthermore, this effect lasted for at least 2 days. Conclusions These results indicate that a new neural representation can be rapidly established between auditory and visual modalities.

  4. 78 FR 13765 - Federal Acquisition Regulation; Definition of Contingency Operation

    Science.gov (United States)

    2013-02-28

    ... Federal Acquisition Regulation; Definition of Contingency Operation AGENCY: Department of Defense (DoD... Regulation (FAR) to revise the definition of ``contingency operation'' to address the statutory change to the... ``contingency operation'' at FAR 2.101 in accordance with the statutory change to the definition made by...

  5. Life after transplantation: new transitions in quality of life and psychological distress.

    Science.gov (United States)

    Muehrer, Rebecca J; Becker, Bryan N

    2005-01-01

    Individuals with kidney failure often elect to undergo kidney transplantation because they believe that they will be more active and return a sense of normality to their lives with a functioning transplant. Therefore it is important to assess whether these objectives are being met. To do so, we can examine health-related quality of life (HRQOL) in transplant recipients. A number of tools have been used for this purpose, including general HRQOL instruments such as the 36-item short-form health survey (SF-36) and transplant-specific surveys such as the Kidney Transplant Questionnaire. In general, HRQOL assessments improve with transplantation in functional and physical domains. However, many factors actually influence HRQOL in a negative way, including comorbid conditions, kidney function per se, rejection episodes and hospitalizations, employment status, and adverse effects of medications. Perceived physical appearance, issues related to sexuality, stress, anxiety, and even guilt complicate the emotional and psychological landscape after transplantation. This constellation of factors may be predictive of posttransplant life events, such as resumption of employment. Posttransplant HRQOL may be exceedingly important in understanding the issues related to adherence with treatment regimens, especially in the pediatric and adolescent transplant populations. HRQOL is now established as an important issue after transplantation. Nonetheless, shortcomings still exist in our ability to address HRQOL after transplantation. In particular, more study of patient-centered interventions is needed. The use of standardized methodologies for patient assessment could improve our ability to identify if such patient-centered interventions actually succeed across populations, and help us further address the panoply of factors encompassed within posttransplant HRQOL.

  6. Treatment of post-transplantation lymphoproliferative disorders after kidney transplant with rituximab and conversion to m-TOR inhibitor.

    Science.gov (United States)

    Nieto-Rios, John Fredy; Gómez de Los Ríos, Sandra Milena; Serna-Higuita, Lina María; Ocampo-Kohn, Catalina; Aristizabal-Alzate, Arbey; Gálvez-Cárdenas, Kenny Mauricio; Zuluaga-Valencia, Gustavo Adolfo

    2016-12-30

    Post-transplantation lymphoproliferative disorders are serious complications of organ transplantation which treatment is not yet standardized. To describe the clinical response, overall and graft survival of patients in our center with this complication after kidney transplantation, which received rituximab as part of their treatment as well as conversion to m-TOR. Retrospective study, which included patients, diagnosed with post-transplant lymphoproliferative disorders after kidney transplantation from January 2011 to July 2014. Eight cases were found with a wide spectrum of clinical presentations. Most had monomorphic histology, 85% were associated with Epstein-Barr virus, 25% of patients had tumor involvement of the renal graft, and 12.5% ​​had primary central nervous system lymphoma. All patients were managed with reduction of immunosuppression, conversion to m-TOR (except one who lost the graft at diagnosis) and rituximab-based therapy. The overall response rate was 87.5% (62.5% complete response, 25% partial response). Survival was 87.5% with a median follow-up of 34 months. An additional patient lost the graft, with chronic nephropathy already known. All the remaining patients had stable renal function. There are no standardized treatment regimens for lymphoproliferative disorders after kidney transplantation, but these patients can be managed successfully with reduction of immunosuppression, conversion to m-TOR and rituximab-based schemes.

  7. Contingent Attentional Capture by Conceptually Relevant Images

    Science.gov (United States)

    Wyble, Brad; Folk, Charles; Potter, Mary C.

    2013-01-01

    Attentional capture is an unintentional shift of visuospatial attention to the location of a distractor that is either highly salient, or relevant to the current task set. The latter situation is referred to as contingent capture, in that the effect is contingent on a match between characteristics of the stimuli and the task-defined…

  8. Predictors of hyperparathyroidism in renal transplant recipients

    International Nuclear Information System (INIS)

    Houssaini, T.S.; Arrayahani, M.; Rhou, H.; Amar, Y.; Benamar, L.; Ouzeddoun, N.; Bayahia, R.

    2008-01-01

    The changes in parathyroid hormone secretion after successful renal transplantation remain to be clearly elucidated. Our study was aimed at identifying the predictors of hyperparathyroidism in renal transplant recipients. A retrospective single center study involving 37 renal transplant recipients, with a follow-up of at least one year, was performed. All transplants were performed using kidneys from living related donors. The average age of study patients was 30+-10 years, with a male-female ratio of 1.31. The mean duration on hemodialysis (HD) prior to transplantation was 25+-18 months. All the grafts but one were functional after a mean follow-up of 41+-21 months. We noted a rapid reduction of the mean parathyroid hormone (iPTH) level from 383+-265 pg/ml before transplantation to 125+-67 pg/ml at one year and 108+-66 pg/ml at two years after transplantation (p=0.01). Bivariate analysis revealed that the level of iPTH obtained during follow-up correlated with the duration on HD (p=0.03), the serum creatinine at 24-months (p=0.013), and to the level of iPTH in the first year post transplantation (P=<0.001). Other clinical or laboratory parameters were not predictive of hyperparathyroidism after kidney transplantation. Liner regression showed that only the serum creatinine at 24-months independently correlated with the level of iPTH at last follow-up (p=0.02). Our study suggests that short duration on HD and a functional graft are the main predictors of correction of hyperparathyroidism after renal transplantation. (author)

  9. Intrahepatic cholangiocarcinoma--a rare indication for liver transplantation. Case report and review of the literature.

    Science.gov (United States)

    Hrehoreţ, D; Alexandrescu, S; Grigorie, R; Herlea, V; Anghel, R; Popescu, I

    2012-01-01

    While hepatocellular carcinoma is a common indication for liver transplantation, intrahepatic cholangiocarcinoma represents a controversial indication for this procedure, due to lower disease-free and overall survival rates achieved by liver transplantation in such patients. Hence, in the last years, few centers reported satisfactory survival rates after liver transplantation for cholangiocarcinoma, in highly selected groups of patients. Herein we present the clinicopathological characteristics, the pre- and postoperative management and the favorable outcome of a patient undergoing liver transplantation for an unresectable intrahepatic cholangiocarcinoma. We consider that reporting the patients with such favorable outcomes is useful, since collecting the data presented by different centers may contribute to identification of a selected group of patients with cholangiocarcinoma who may benefit from liver transplantation. A 62-year old female patient with a primary liver tumor developed on HBV liver cirrhosis, was admitted in our center for therapeutical management. Since preoperative work-up suggested that the tumor is an unresectable hepatocellular carcinoma (due to its location and underlying liver disease), we decided to perform liver transplantation. The pathological examination of the explanted liver revealed that the tumor was a stage I intrahepatic cholangiocarcinoma. The postoperative course was uneventful, and in present, 15 months after transplantation, the patient is alive, without recurrence. Liver transplantation may represent a valid therapeutical option in selected patients with intrahepatic cholangiocarcinoma. Patients with early stage intrahepatic cholangiocarcinomas unresectable due to the underlying liver cirrhosis seem to benefit mostly by liver transplantation. Further studies are needed to identify the favorable prognostic factors in order to select the most appropriate candidates for liver transplantation. The most suitable immunosuppressive

  10. The Effectiveness of Gaze-Contingent Control in Computer Games.

    Science.gov (United States)

    Orlov, Paul A; Apraksin, Nikolay

    2015-01-01

    Eye-tracking technology and gaze-contingent control in human-computer interaction have become an objective reality. This article reports on a series of eye-tracking experiments, in which we concentrated on one aspect of gaze-contingent interaction: Its effectiveness compared with mouse-based control in a computer strategy game. We propose a measure for evaluating the effectiveness of interaction based on "the time of recognition" the game unit. In this article, we use this measure to compare gaze- and mouse-contingent systems, and we present the analysis of the differences as a function of the number of game units. Our results indicate that performance of gaze-contingent interaction is typically higher than mouse manipulation in a visual searching task. When tested on 60 subjects, the results showed that the effectiveness of gaze-contingent systems over 1.5 times higher. In addition, we obtained that eye behavior stays quite stabile with or without mouse interaction. © The Author(s) 2015.

  11. Electrophysiological brain indices of risk behavior modification induced by contingent feedback.

    Science.gov (United States)

    Megías, Alberto; Torres, Miguel Angel; Catena, Andrés; Cándido, Antonio; Maldonado, Antonio

    2018-02-01

    The main aim of this research was to study the effects of response feedback on risk behavior and the neural and cognitive mechanisms involved, as a function of the feedback contingency. Sixty drivers were randomly assigned to one of three feedback groups: contingent, non-contingent and no feedback. The participants' task consisted of braking or not when confronted with a set of risky driving situations, while their electroencephalographic activity was continuously recorded. We observed that contingent feedback, as opposed to non-contingent feedback, promoted changes in the response bias towards safer decisions. This behavioral modification implied a higher demand on cognitive control, reflected in a larger amplitude of the N400 component. Moreover, the contingent feedback, being predictable and entailing more informative value, gave rise to smaller SPN and larger FRN scores when compared with non-contingent feedback. Taken together, these findings provide a new and complex insight into the neurophysiological basis of the influence of feedback contingency on the processing of decision-making under risk. We suggest that response feedback, when contingent upon the risky behavior, appears to improve the functionality of the brain mechanisms involved in decision-making and can be a powerful tool for reducing the tendency to choose risky options in risk-prone individuals. Copyright © 2018 Elsevier B.V. All rights reserved.

  12. Skype me! Socially Contingent Interactions Help Toddlers Learn Language

    OpenAIRE

    Roseberry, Sarah; Hirsh-Pasek, Kathy; Golinkoff, Roberta Michnick

    2013-01-01

    Language learning takes place in the context of social interactions, yet the mechanisms that render social interactions useful for learning language remain unclear. This paper focuses on whether social contingency might support word learning. Toddlers aged 24- to 30-months (N=36) were exposed to novel verbs in one of three conditions: live interaction training, socially contingent video training over video chat, and non-contingent video training (yoked video). Results sugges...

  13. Contingency planning in southern Africa: Events rather than processes?

    OpenAIRE

    Elias Mabaso; Siambabala B. Manyena

    2013-01-01

    With the increasing frequency, magnitude and impact of disasters, there is growing focus on contingency planning as a tool for enhancing resilience. Yet, there is little empirical evidence that reflects on the practice of contingency planning systems within the context of disaster risk reduction. This article explores the practice of contingency planning in southern Africa, focussing on Malawi, Mozambique, Namibia, Zambia and Zimbabwe. A qualitative comparative analysis informed by fieldwork ...

  14. MATERNAL ANXIETY SYMPTOMS AND MOTHER–INFANT SELF- AND INTERACTIVE CONTINGENCY

    Science.gov (United States)

    Beebe, Beatrice; Steele, Miriam; Jaffe, Joseph; Buck, Karen A.; Chen, Henian; Cohen, Patricia; Kaitz, Marsha; Markese, Sara; Andrews, Howard; Margolis, Amy; Feldstein, Stanley

    2014-01-01

    Associations of maternal self-report anxiety-related symptoms with mother–infant 4-month face-to-face play were investigated in 119 pairs. Attention, affect, spatial orientation, and touch were coded from split-screen videotape on a 1-s time base. Self- and interactive contingency were assessed by time-series methods. Because anxiety symptoms signal emotional dysregulation, we expected to find atypical patterns of mother–infant interactive contingencies, and of degree of stability/lability within an individual’s own rhythms of behavior (self-contingencies). Consistent with our optimum midrange model, maternal anxiety-related symptoms biased the interaction toward interactive contingencies that were both heightened (vigilant) in some modalities and lowered (withdrawn) in others; both may be efforts to adapt to stress. Infant self-contingency was lowered (“destabilized”) with maternal anxiety symptoms; however, maternal self-contingency was both lowered in some modalities and heightened (overly stable) in others. Interactive contingency patterns were characterized by intermodal discrepancies, confusing forms of communication. For example, mothers vigilantly monitored infants visually, but withdrew from contingently coordinating with infants emotionally, as if mothers were “looking through” them. This picture fits descriptions of mothers with anxiety symptoms as overaroused/fearful, leading to vigilance, but dealing with their fear through emotional distancing. Infants heightened facial affect coordination (vigilance), but dampened vocal affect coordination (withdrawal), with mother’s face—a pattern of conflict. The maternal and infant patterns together generated a mutual ambivalence. PMID:25983359

  15. Islet transplantation: the quest for an ideal source

    International Nuclear Information System (INIS)

    Younes, Nidal A.; Nothias, J.; Garfinkel, Marc R.

    2008-01-01

    The progress of islet transplantation as a new therapy for patients with diabetes mellitus depends directly upon the development of efficient and practical immunoisolation methods for the supply of sufficient quantities of islet cells. Without these methods, large scale clinical application of this therapy would be impossible. Two eras of advances can be identified in the development of islet transplantation. The first was an era of experimental animal and human research that centered on islet isolation procedures and transplantation in different species as evidence that transplanted islets have the capability to reverse diabetes. The second was the era of Edmonton protocol, when the focus became the standardization of isolation procedures and introduction of new immunosuppressive drugs to maintain human allograft transplantation. The quest for an alternative source for islets (xenographs, stem cells and cell cultures) to overcome the shortage of human islets was an important issue during these eras. This paper reviews the history of islet transplantation and the current procedures in human allotransplantation, as well as different types of immunoisolation methods. It explores novel approaches to enhancing transplantation site vascularity and islet cell function, whereby future immunoisolation technology could offer additional therapeutic advantages to human islet allotransplantation. (author)

  16. The Impact of the Contingency of Robot Feedback for HRI

    DEFF Research Database (Denmark)

    Fischer, Kerstin; Lohan, Katrin Solveig; Saunders, Joe

    2013-01-01

    robot iCub on a set of shapes and on a stacking task in two conditions, once with socially contingent, nonverbal feedback implemented in response to different gaze and looming behaviors of the human tutor, and once with non-contingent, saliency-based feedback. The results of the analysis of participants......’ linguistic behaviors in the two conditions show that contingency has an impact on the complexity and the pre-structuring of the task for the robot, i.e. on the participants’ tutoring behaviors. Contingency thus plays a considerable role for learning by demonstration....

  17. Probabilistic real-time contingency ranking method

    International Nuclear Information System (INIS)

    Mijuskovic, N.A.; Stojnic, D.

    2000-01-01

    This paper describes a real-time contingency method based on a probabilistic index-expected energy not supplied. This way it is possible to take into account the stochastic nature of the electric power system equipment outages. This approach enables more comprehensive ranking of contingencies and it is possible to form reliability cost values that can form the basis for hourly spot price calculations. The electric power system of Serbia is used as an example for the method proposed. (author)

  18. Liver transplantation for HCV cirrhosis at Karolinska University Hospital Huddinge, Stockholm.

    Science.gov (United States)

    Gjertsen, H; Weiland, O; Oksanen, A; Söderdahl, G; Broomé, U; Ericzon, B-G

    2006-10-01

    Hepatitis C virus (HCV)-induced cirrhosis is the major indication for liver transplantation globally, and an increasing indication for liver transplantation in Sweden. We have retrospectively examined the 120 patients transplanted for HCV cirrhosis from 1987 through 2005, including 11 who received more than one graft. The 1-, 3-, and 5-year postoperative survivals for all patients transplanted for HCV with or without hepatocellular cancer (HCC) were 77%, 66%, and 53%, respectively. HCV patients without HCC had a 1-, 3-, and 5-year survivals of 78%, 73%, and 61%, compared with 84%, 79% and 74%, respectively, for patients transplanted with chronic liver diseases without cancer or HCV. The number of patients with HCV cirrhosis transplanted in our center is increasing. Compared with patients transplanted for other chronic liver diseases, we experienced inferior results among patients with HCV cirrhosis.

  19. Risk Factors of Erythrocytosis Post Renal Transplantation

    Directory of Open Access Journals (Sweden)

    Razeghi Effat

    2008-01-01

    Full Text Available Post-transplant erythrocytosis (PTE is characterized by persistently ele-vated hematocrit level 0 51%. This complication is reported to develop in 10-20% of renal allografts recipients, mostly 2 years after kidney transplantation. PTE is self-limited in 25% of the patients; however it may persist in patients with an increased susceptibility for thrombosis and potential fatal outcome. To evaluate the prevalence and risk factors of PTE in our center, we reviewed the records of 235 patients who received renal allografts from 1999 to 2004. Polycythemia was found in 45 (19% patients. There was no significant correlation of polycythemia and age, history of hypertension, diabetes, pre-transplant hematocrit level, pre-transplant history of transfusion, graft′s function, and source of kidney. A significantly higher proportion of PTE patients were males, patients with history of polycystic kidney disease, and patients with glomerulonephritis. We conclude that PTE is an important complication of kidney transplantation. There are several risk factors that should be addressed to prevent this complication.

  20. Oil spill contingency planning in the Ivory coast

    International Nuclear Information System (INIS)

    Bender, K.; Jensen, S.K.; Ostergaerd, J.; Nogbou, P.

    1993-01-01

    The administrative center in charge of handling oil spill pollution situations on the Ivory Coast, West Africa, is named Centre Ivoirien Antipollution (CIAPOL). Its organizational structure has been reshuffled recently. CIAPOL now has three divisions: a laboratory division, a division for cleaning up oil and chemical pollution at sea, and an administrative division. The risk for oil pollution is known: within the past ten years five spills have been reported. All of these have been connected to operations relating to the refinery in Abidjan. More than 2,000 ships call at the port of Abidjan every year. Minor oil slicks are found almost permanently in the harbor and the lagoons around the harbor. Lumps of tar are rather common on the beaches all along the country's coast. This paper focuses on the background investigation in sensitive areas and risk analysis that led to a revision of the oil spill contingency plan, Plan Pollumar, and the recent purchase of oil spill cleanup equipment. The creation of a regional oil pollution response center at CIAPOL for all of the countries in West Africa, is proposed

  1. IS RESECTION OF HEPATOCELLULAR CARCINOMA IN THE ERA OF LIVER TRANSPLANTATION WORTHWILE? A single center experience

    Directory of Open Access Journals (Sweden)

    Paulo HERMAN

    Full Text Available ABSTRACT Background - Liver resection for hepatocellular carcinoma is a potentially curative therapeutic procedure that can be performed readily after its indication, without the need of a long waiting time and lower costs when compared to liver transplantation, being a good alternative in patients with preserved/good liver function. Objective - Evaluate long-term results of liver resection from a high volume single center for selected patients with hepatocellular carcinoma in a context of a long waiting list for liver transplant. Methods - One hundred and one patients with hepatocellular carcinoma, with a mean age of 63.1 years, and preserved liver function were submitted to liver resection. Clinical and pathological data were evaluated as prognostic factors. Mean follow-up was 39.3 months. Results - All patients had a single nodule and 57 (58.2% patients were within the Milan criteria. The size of the nodule ranged from 1 to 24 cm in diameter. In 74 patients, liver resection was performed with the open approach and in 27 (26.7% was done laparoscopically. Postoperative morbidity was 55.3% being 75.5% of the complications classified as Dindo-Clavien I and II and operative mortality was 6.9%. Five-year overall and disease free survival rates were 49.9% and 40.7%, respectively.After a log-rank univariate analysis, the levels of preoperative alpha-fetoprotein (P=0.043, CA19-9 (P=0.028, capsule invasion (P=0.03, positive margin (R1-R2 (P=0.004 and Dindo-Claviens' morbidity classification IV (P=0.001 were the only parameters that had a significant negative impact on overall survival. On the odds-ratio evaluation, the only significant factors for survival were high levels of alpha-fetoprotein (P=0.037, and absence of free margins (P=0.008. Conclusion - Resection, for selected cases, is a potentially curative treatment with acceptable morbidity and mortality and, in a context of a long waiting list for transplant, plays an important role for the

  2. Physicians attitudes toward living non-related renal transplantation (LNRRT). The Living non-Related Renal Transplant Study Group.

    Science.gov (United States)

    1993-06-01

    Renal transplantation is considered now the definitive treatment for patients with end-stage renal disease (ESRD). Unfortunately, the worldwide shortage of kidneys remains the most important obstacle to transplantation. In developing countries, including those of the Middle East, the shortage is even more dramatic. Despite great efforts to establish and maintain successful transplant centers, the number of kidneys that have been transplanted in the last few years has actually declined. The lack of a dependable kidney source played well into the hands of unscrupulous entrepreneurs who started brokerage of organs for profit. In this practice, patients with ESRD travel to India and other countries to purchase kidneys from living genetically non-related poor donors. Patient care was therefore relegated to the laws of the marketplace and both patients and donors were exploited to maximize profit. Additionally, reported results of this type of transplantation were inferior to those of other types of transplantation. Not unexpectedly, these issues have created intense controversy among transplant physicians and the general public in which moral, ethical and medical issues were debated. To investigate these issues, we conducted a large multicenter study in Saudi Arabia, Bahrain and Egypt. In the first phase of this study, we surveyed 50 institutions regarding their attitude toward LNRRT, of which 22 responded. The results of our survey clearly show that patients with ESRD take the initiative in seeking LNRRT despite physician discouragement and significant financial burden.(ABSTRACT TRUNCATED AT 250 WORDS)

  3. Establishing an autologous versus allogeneic hematopoietic cell transplant program in nations with emerging economies.

    Science.gov (United States)

    Chaudhri, Naeem A; Aljurf, Mahmoud; Almohareb, Fahad I; Alzahrani, Hazzaa A; Bashir, Qaiser; Savani, Bipin; Gupta, Vikas; Hashmi, Shahrukh K

    2017-12-01

    More than 70,000 hematopoietic cell transplants are currently performed each year, and these continue to increase every year. However, there is a significant variation in the number of absolute transplants and transplant rates between centers, countries, and global regions. The prospect for emerging countries to develop a hematopoietic cell transplantation (HCT) program, as well as to decide on whether autologous HCT (auto-HCT) or allogeneic HCT (allo-HCT) should be established to start with, relies heavily on factors that can explain differences between these two procedures. Major factors that will influence a decision about establishing the type of HCT program are macroeconomic factors such as organization of the healthcare network, available resources and infrastructure. Prevalence of specific diseases in the region as well genetic background of donors and recipients will also influence the mandate or priority of the HCT in the national healthcare plan to explain some of the country-specific differences. Furthermore, microeconomic factors play a role, such as center-specific experience in treating various disorders requiring hematopoietic stem cell transplantation, along with accreditation status and patient volume. The objective of the transplant procedure was to improve the survival and quality of life of patients. The regional difference that one notices in emerging countries about the higher number of allo-HCT compared with auto-HCT procedures performed is primarily based on suboptimal healthcare network in treating various malignant disorders that are the primary indication for auto-stem cell transplantation. In this context, nonmalignant disorders such as bone marrow failure syndromes, inherited genetic disorders and hemoglobinopathies have become the major indication for stem cell transplantation. Better understanding of these factors will assist in establishing new transplant centers in the emerging countries to achieve their specific objectives and

  4. Lung Transplantation in Cystic Fibrosis and the Impact of Extracorporeal Circulation.

    Science.gov (United States)

    Jauregui, Alberto; Deu, Maria; Romero, Laura; Roman, Antonio; Moreno, Antonio; Armengol, Manuel; Solé, Juan

    2018-03-10

    Lung disease is the major cause of death among cystic fibrosis (CF) patients, affecting 80% of the population. The impact of extracorporeal circulation (ECC) during transplantation has not been fully clarified. This study aimed to evaluate the outcomes of lung transplantation for CF in a single center, and to assess the impact of ECC on survival. We performed a retrospective observational study of all trasplanted CF patients in a single center between 1992 and 2011. During this period, 64 lung transplantations for CF were performed. Five- and 10-year survival of trasplanted patients was 56.7% and 41.3%, respectively. Pre-transplantation supplemental oxygen requirements and non-invasive mechanical ventilation (NIMV) do not seem to affect survival (P=.44 and P=.63, respectively). Five- and 10-year survival among patients who did not undergo ECC during transplantation was 75.69% and 49.06%, respectively, while in those did undergo ECC during the procedure, 5- and 10-year survival was 34.14% and 29.87%, respectively (P=.001). PaCO 2 is an independent risk factor for the need for ECC. The survival rates of CF patients undergoing lung transplantation in our hospital are similar to those described in international registries. Survival is lower among patients receiving ECC during the procedure. PaCO 2 is a risk factor for the need for ECC during lung transplantation. Copyright © 2018 SEPAR. Publicado por Elsevier España, S.L.U. All rights reserved.

  5. Does contingency in adults' responding influence 12-month-old infants' social referencing?

    Science.gov (United States)

    Stenberg, Gunilla

    2017-11-01

    In two experiments we examined the influence of contingent versus non-contingent responding on infant social referencing behavior. EXPERIMENT 1: Forty 12-month-old infants were exposed to an ambiguous toy in a social referencing situation. In one condition an unfamiliar adult who in a previous play situation had responded contingently to the infant's looks gave the infant positive information about the toy. In the other condition an unfamiliar adult who previously had not responded contingently delivered the positive information. EXPERIMENT 2: Forty-eight 12-month-old infants participated in Experiment 2. In this experiment it was examined whether the familiarity of the adult influences infants' reactions to contingency in responding. In one condition a parent who previously had responded contingently to the infant's looks provided positive information about the ambiguous toy, and in the other condition a parent who previously had not responded contingently provided the positive information. The infants looked more at the contingent experimenter in Experimenter 1, and also played more with the toy after receiving positive information from the contingent experimenter. No differences in looking at the parent and in playing with the toy were found in Experiment 2. The results indicate that contingency in responding, as well as the familiarity of the adult, influence infants' social referencing behavior. Copyright © 2017 Elsevier Inc. All rights reserved.

  6. Contingency learning without awareness: evidence for implicit control.

    Science.gov (United States)

    Schmidt, James R; Crump, Matthew J C; Cheesman, Jim; Besner, Derek

    2007-06-01

    The results of four experiments provide evidence for controlled processing in the absence of awareness. Participants identified the colour of a neutral distracter word. Each of four words (e.g., MOVE) was presented in one of the four colours 75% of the time (Experiments 1 and 4) or 50% of the time (Experiments 2 and 3). Colour identification was faster when the words appeared in the colour they were most often presented in relative to when they appeared in another colour, even for participants who were subjectively unaware of any contingencies between the words and the colours. An analysis of sequence effects showed that participants who were unaware of the relation between distracter words and colours nonetheless controlled the impact of the word on performance depending on the nature of the previous trial. A block analysis of contingency-unaware participants revealed that contingencies were learned rapidly in the first block of trials. Experiment 3 showed that the contingency effect does not depend on the level of awareness, thus ruling out explicit strategy accounts. Finally, Experiment 4 showed that the contingency effect results from behavioural control and not from semantic association or stimulus familiarity. These results thus provide evidence for implicit control.

  7. The Contingent Value of Organizational Integration

    Directory of Open Access Journals (Sweden)

    Virpi Turkulainen

    2013-08-01

    Full Text Available We elaborate the link between organizational design and effectiveness by examining organizational integration and performance in the context of modern manufacturing. Through careful contextualization and empirical analysis of 266 manufacturing organizations in three industries and nine countries, we uncover a joint effect of integration and complexity on organizational effectiveness. The results extend structural contingency theory, in particular the mechanisms that link organizational integration to organizational effectiveness. We conclude by discussing the continuing relevance of structural contingency theory.

  8. Distinct changes in CREB phosphorylation in frontal cortex and striatum during contingent and non-contingent performance of a visual attention task

    Directory of Open Access Journals (Sweden)

    Mirjana eCarli

    2011-10-01

    Full Text Available The cyclic-AMP response element binding protein (CREB family of transcription factors has been implicated in numerous forms of behavioural plasticity. We investigated CREB phosphorylation along some nodes of corticostriatal circuitry such as frontal cortex (FC and dorsal (caudate putamen, CPu and ventral (nucleus accumbens, NAC striatum in response to the contingent or non-contingent performance of the five-choice serial reaction time task (5-CSRTT used to assess visuospatial attention. Three experimental manipulations were used; an attentional performance group (contingent, master, a group trained previously on the task but for whom the instrumental contingency coupling responding with stimulus detection and reward was abolished (non-contingent, yoked and a control group matched for food deprivation and exposure to the test apparatus (untrained. Rats trained on the 5-CSRTT (both master and yoked had higher levels of CREB protein in the FC, CPu and NAC compared to untrained controls. Despite the divergent behaviour of master and yoked rats CREB activity in the FC was not substantially different. In rats performing the 5-CSRTT (master, CREB activity was completely abolished in the CPu whereas in the NAC it remained unchanged. In contrast, CREB phosphorylation in CPu and NAC increased only when the contingency changed from goal-dependent to goal-independent reinforcement (yoked. The present results indicate that up-regulation of CREB protein expression across cortical and striatal regions possibly reflects the extensive instrumental learning and performance whereas increased CREB activity in striatal regions may signal the unexpected change in the relationship between instrumental action and reinforcement.

  9. Appraisal of the coordinator-based transplant organizational model.

    Science.gov (United States)

    Filipponi, F; De Simone, P; Mosca, F

    2005-01-01

    In 1999, the Italian Parliament passed a law aimed at setting the standards of practice and quality in organ, tissue and cell donation, and transplantation. For the first time in the history of Italian transplantation, a coordinator-based model reproducing some of the basic principles of the Spanish system was officially enacted by the Parliament, bringing to an end years of lacking regulation. What differentiates those coordinator-based systems adopted in Southern Europe from Northern European national and multinational transplant organizations is the functional integration of donor and transplant care activities enacted by national governments. The Italian model of transplant health care consists of four levels of transplant coordination: local, regional, interregional, and national. The latter is represented by Centro Nazionale Trapianti (CNT; the Italian National Center for Transplantation). CNT objectives consist of ensuring equitable access to donation and transplant care for all citizens according to the principles of the Italian National Health System. In achieving these goals, CNT acts in cooperation with three interregional transplant agencies: the Nord Italia Transplant program, the Associazione InterRegionale Trapianti, and the Organizzazione Centro Sud Trapianti. Whereas local and interregional coordinators are at the front line of all donation and transplant activities, regional and national coordinators function to monitor, direct, and plan donation and transplant health care activities. Based on the increase in donation and transplant activities recently achieved in those countries that have adopted a governmental coordinator-based transplant care model, we believe that such a system is appropriate to serve patients' interests according to the principles of subsidiary and equity. However, it should further be improved by expansion of the governance model throughout Europe, through implementation of current standards of care, and by adopting the

  10. Effectiveness evaluation of contingency sum as a risk management ...

    African Journals Online (AJOL)

    Ethiopian Journal of Environmental Studies and Management ... manage risks prone projects have adopted several methods, one of which is contingency sum. ... initial project cost, cost overrun and percentage allowed for contingency.

  11. The role of the pharmacist in the management of kidney transplant recipients

    Directory of Open Access Journals (Sweden)

    Joshua J Wiegel

    2016-01-01

    Full Text Available Pharmacists may play a key role on the multidisciplinary transplant team. This article describes the development and current status of pharmacists in the management of transplant recipients in the United States. Traditionally, pharmacists played an important support role in transplant medicine. This role has been expanded to include direct patient care for the avoidance, detection, and/or treatment of side effects from the polypharmacy necessary in the management of these complex patients. Pharmacists provide pre- and post-transplant education to transplant recipients to enhance adherence to complicated medical regimens and thereby reduce readmission to hospital and unscheduled, costly visits to urgent care centers and/or hospital emergency departments.

  12. Challenging hepatitis C-infected liver transplant patients

    Directory of Open Access Journals (Sweden)

    Oliver M

    2016-01-01

    Full Text Available Madeleine Oliver,1 Christopher Chiodo Ortiz,2 Jorge Ortiz31University of Toledo College of Medicine, Toledo, OH, 2Bucknell University, Lewisburg, PA, 3Department of Transplant Surgery, University of Toledo Medical Center, Toledo, OH, USA Abstract: Caring for liver transplant patients suffering from chronic hepatitis C virus (HCV infection is a challenging task for transplant surgeons and primary physicians alike. HCV is the leading cause of liver transplantation in the USA and comes with a myriad of complications that increase morbidity and mortality. This review focuses on patient follow-up, spanning from before the liver transplant occurs to the patient's long-term health. Pretransplant, both donor and recipient variables, must be carefully chosen to ensure optimal surgical success. Risk factors must be identified and HCV viral load must be reduced to a minimum. In addition to standard transplant complications, HCV patients suffer from additional problems, such as fibrosing cholestatic hepatitis and widespread viremia. Physicians must focus on the balance of immunosuppressive and antiviral medications, while considering possible side effects from these potent drugs. Over the years following surgery, physicians must identify any signs of failing liver health, as HCV-positive patients have an increased risk for cirrhosis and certain life-threatening malignancies. Keywords: liver transplant, hepatitis C virus, postoperative, cirrhosis, donor and recipient variables, viremia

  13. A Transplant-Specific Quality Initiative-Introducing TransQIP: A Joint Effort of the ASTS and ACS.

    Science.gov (United States)

    Parekh, J; Ko, C; Lappin, J; Greenstein, S; Hirose, R

    2017-07-01

    In an attempt to improve surgical quality in the field of transplantation, the American College of Surgeons (ACS) and American Society of Transplant Surgeons have initiated a national quality improvement program in transplantation. This transplant-specific quality improvement program, called TransQIP, has been built from the ground up by transplant surgeons and captures detailed information on donor and recipient factors as well as transplant-specific outcomes. It is built upon the existing ACS/National Surgical Quality Improvement Program infrastructure and is designed to capture 100% of liver and kidney transplants performed at participating sites. TransQIP has completed its alpha pilot and will embark upon its beta phase at approximately 30 centers in the spring of 2017. Going forward, we anticipate TransQIP will help satisfy Centers for Medicare and Medicaid Services requirements for a quality improvement program, surgeon requirements for maintenance of certification, and qualify as a clinical practice improvement activity under the Merit-Based Incentive Payment System. Most importantly, we believe TransQIP will provide insight into surgical outcomes in transplantation that will allow the field to provide better care to our patients. © 2017 The American Society of Transplantation and the American Society of Transplant Surgeons.

  14. Attitude of Physicians towards the Follow-up of Renal Transplant Patients: A Questionnaire Survey in Saudi Arabia

    Directory of Open Access Journals (Sweden)

    Souqiyyeh Muhammad

    2006-01-01

    Full Text Available The goal of this study was to evaluate the attitude of the physicians towards the follow-up of the renal transplant patients in the Kingdom of Saudi Arabia (KSA. We sent a questionnaire to 168 physicians working in 148 active dialysis centers in the KSA. The study was conducted from June-October 2005. There were 140 physicians (83.3% who answered the questionnaire; they represented 136 (91.9% dialysis centers. There were 43 (31.2% respondents who had a transplant clinic for follow-up of transplant recipients. Of the 96 (69.1% who did not have a clinic, 29 (30.2% claimed expertise for follow-up of transplant recipients, six (6.2% had a laboratory set-up to monitor the immunosuppressive drug levels and 40 (44.4% felt the need for one. There were 121 (89% respondents who would consider the chronic renal failure (CRF patients for transplantation because it is the best form of therapy. Seventy-seven respondents (55% had a protocol for work-up of the CRF patients for transplantation, 31 (22.3% had a coordinator for the work-up of the transplant candidates, 34 (24.5% had regular meetings to decide on the waiting list for transplantation, and 51 (37.8% had affiliation with, or worked at a transplant center. Nevertheless, 127 (90.7% respondents believed that the results of renal transplantation were good enough to recommend the procedure to all patients as early as possible. There were 133 (97.1% respondents who believed that organ shortage was the major factor for the low percentage of renal transplantation. Only 52 (37.1% respondents knew about the recent regulations established by the World Health Organization (WHO for organ donation. There were 63 (48.1% respondents who believed that seeking commercial renal transplantation outside the KSA to be unacceptable because of the medical and ethical complications involved. Many respondents (71.4% from non-MOH hospitals, and those who had transplant clinics believed that the tacrolimus + mycophenolate

  15. Contingent Commitments: Bringing Part-Time Faculty into Focus. A Special Report from the Center for Community College Student Engagement

    Science.gov (United States)

    Center for Community College Student Engagement, 2014

    2014-01-01

    Part-time faculty teach approximately 58% of U.S. community college classes and thus manage learning experiences for more than half (53%) of students enrolled in community colleges (JBL Associates, 2008). Often referred to as "contingent faculty," their work is conditional; the college typically has no obligation to them beyond the…

  16. Contingent capture effects in temporal order judgments.

    Science.gov (United States)

    Born, Sabine; Kerzel, Dirk; Pratt, Jay

    2015-08-01

    The contingent attentional capture hypothesis proposes that visual stimuli that do not possess characteristics relevant for the current task will not capture attention, irrespective of their bottom-up saliency. Typically, contingent capture is tested in a spatial cuing paradigm, comparing manual reaction times (RTs) across different conditions. However, attention may act through several mechanisms and RTs may not be ideal to disentangle those different components. In 3 experiments, we examined whether color singleton cues provoke cuing effects in temporal order judgments (TOJs) and whether they would be contingent on attentional control sets. Experiment 1 showed that color singleton cues indeed produce cuing effects in TOJs, even in a cluttered and dynamic target display containing multiple heterogeneous distractors. In Experiment 2, consistent with contingent capture, we observed reliable cuing effects only when the singleton cue matched participants' current attentional control set. Experiment 3 suggests that a sensory interaction account of the differences found in Experiment 2 is unlikely. Our results help to discern the attentional components that may play a role in contingent capture. Further, we discuss a number of other effects (e.g., reversed cuing effects) that are found in RTs, but so far have not been reported in TOJs. Those differences suggest that RTs are influenced by a multitude of mechanisms; however, not all of these mechanisms may affect TOJs. We conclude by highlighting how the study of attentional capture in TOJs provides valuable insights for the attention literature, but also for studies concerned with the perceived timing between stimuli. (c) 2015 APA, all rights reserved).

  17. 25 CFR 39.502 - How does a school apply for contingency funds?

    Science.gov (United States)

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false How does a school apply for contingency funds? 39.502... EQUALIZATION PROGRAM Contingency Fund § 39.502 How does a school apply for contingency funds? To apply for contingency funds, a school must send a request to the ELO. The ELO must send the request to the Director for...

  18. The detection of contingency and animacy from simple animations in the human brain.

    Science.gov (United States)

    Blakemore, S-J; Boyer, P; Pachot-Clouard, M; Meltzoff, A; Segebarth, C; Decety, J

    2003-08-01

    Contingencies between objects and people can be mechanical or intentional-social in nature. In this fMRI study we used simplified stimuli to investigate brain regions involved in the detection of mechanical and intentional contingencies. Using a factorial design we manipulated the 'animacy' and 'contingency' of stimulus movement, and the subject's attention to the contingencies. The detection of mechanical contingency between shapes whose movement was inanimate engaged the middle temporal gyrus and right intraparietal sulcus. The detection of intentional contingency between shapes whose movement was animate activated superior parietal networks bilaterally. These activations were unaffected by attention to contingency. Additional regions, the right middle frontal gyrus and left superior temporal sulcus, became activated by the animate-contingent stimuli when subjects specifically attended to the contingent nature of the stimuli. Our results help to clarify neural networks previously associated with 'theory of mind' and agency detection. In particular, the results suggest that low-level perception of agency in terms of objects reacting to other objects at a distance is processed by parietal networks. In contrast, the activation of brain regions traditionally associated with theory of mind tasks appears to require attention to be directed towards agency and contingency.

  19. Allogeneic hematopoietic stem cell transplantation in children with primary immunodeficiencies: Hospital Israelita Albert Einstein experience.

    Science.gov (United States)

    Fernandes, Juliana Folloni; Kerbauy, Fabio Rodrigues; Ribeiro, Andreza Alice Feitosa; Kutner, Jose Mauro; Camargo, Luis Fernando Aranha; Stape, Adalberto; Troster, Eduardo Juan; Zamperlini-Netto, Gabriele; Azambuja, Alessandra Milani Prandini de; Carvalho, Bruna; Dorna, Mayra de Barros; Vilela, Marluce Dos Santos; Jacob, Cristina Miuki Abe; Costa-Carvalho, Beatriz Tavares; Cunha, Jose Marcos; Carneiro-Sampaio, Magda Maria; Hamerschlak, Nelson

    2011-06-01

    To report the experience of a tertiary care hospital with allogeneic hematopoietic stem cell transplantation in children with primary immunodeficiencies. Seven pediatric patients with primary immunodeficiencies (severe combined immunodeficiency: n = 2; combined immunodeficiency: n = 1; chronic granulomatous disease: n = 1; hyper-IgM syndrome: n = 2; and IPEX syndrome: n = 1) who underwent eight hematopoietic stem cell transplants in a single center, from 2007 to 2010, were studied. Two patients received transplants from HLA-identical siblings; the other six transplants were done with unrelated donors (bone marrow: n = 1; cord blood: n = 5). All patients had pre-existing infections before hematopoietic stem cell transplants. One patient received only anti-thymocyte globulin prior to transplant, three transplants were done with reduced intensity conditioning regimens and four transplants were done after myeloablative therapy. Two patients were not evaluated for engraftment due to early death. Three patients engrafted, two had primary graft failure and one received a second transplant with posterior engraftment. Two patients died of regimen related toxicity (hepatic sinusoidal obstruction syndrome); one patient died of progressive respiratory failure due to Parainfluenza infection present prior to transplant. Four patients are alive and well from 60 days to 14 months after transplant. Patients' status prior to transplant is the most important risk factor on the outcome of hematopoietic stem cell transplants in the treatment of these diseases. Early diagnosis and the possibility of a faster referral of these patients for treatment in reference centers may substantially improve their survival and quality of life.

  20. CW-FIT: Group Contingency Effects across the Day

    Science.gov (United States)

    Wills, Howard P.; Iwaszuk, Wendy M.; Kamps, Debra; Shumate, Emily

    2014-01-01

    This study explored the effects of a group-contingency intervention on student behavior across academic instructional periods. Research suggests group contingencies are evidence-based practices, yet calls for investigation to determine the best conditions and groups suited for this type of intervention. CW-FIT (Class-Wide Function-related…

  1. State of the Art in Pediatric Lung Transplantation.

    Science.gov (United States)

    Lancaster, Timothy S; Eghtesady, Pirooz

    2018-04-24

    Pediatric lung transplantation is a highly specialized therapy for end stage pulmonary disease in children, performed in only a handful of transplant centers around the world. Advancement in the field has been made on many fronts in recent years, including in public policy and organ allocation strategies, donor selection and management, emerging technologies for donor lung rehabilitation and bridge-to-transplant support of listed candidates, and ongoing refinement of surgical techniques. Despite this progress, children continue to suffer discrepant waitlist mortality and longer waiting times than their adult counterparts, and face special challenges of donor availability and size matching. Here we review the current state of the art in pediatric lung transplantation, reviewing progress made to date and further opportunities to improve care for this unique group of patients. Copyright © 2018 Elsevier Inc. All rights reserved.

  2. Pediatric liver transplantation in 31 consecutive children

    Institute of Scientific and Technical Information of China (English)

    SHEN Zhong-yang; WANG Zi-fa; ZHU Zhi-jun; ZANG Yun-jin; ZHENG Hong; DENG Yong-lin; PAN Cheng; CHEN Xin-guo

    2008-01-01

    Background Although liver transplantation has become a standard therapy for end-stage liver diseases, the experience of pediatric liver transplantation is limited in China. In this article we report our experience in pediatric liver transplantation, and summarize its characters in their indications, surgical techniques, and postoperative managements. Methods Thirty-one children (≤18 years old) underwent liver transplantation in our centers. The mean age at transplantation was 12.4 years old (ranged from 5 months to 18 years) with 7 children being less than 4 years of age at transplantation. The most common diagnosis of patients who underwent liver transplantation were biliary atresia, Wilson's disease, primary biliary cirrhosis, glycogen storage disease, hepatoblastoma, urea cycle defects, fulminant hepatic failure, etc. The surgical procedures included 12 standard (without venovenous bypass), 6 pigyback, 6 reduced-size, 3 split, 3 living donor liver transplantation, and 1 Domino liver transplantation. The triple-drug (FK506, steroid, and mycophenolate mofetil) immunosuppressive regimen was used in most of patients. Patients were followed up for a mean of 21.8 months. Results Five of the 31 patients died during perioperative time; mortality rate was 16.1%. The reasons of death were infections, primary non-function, heart failure, and hypovolemic shock. Postoperative complications in 10 patients included biliary leakage, acute rejection, abdominal infection, hepatitis B virus (HBV) or hepatitis C virus (HCV) infection, and pulmonary infection. Overall patient cumulative survival rate at 1-, 3-, and 5-year was 78.1%, 62.6%, 62.6%, respectively.Conclusions The most common indications of pediatric liver transplantation were congenital end-stage liver diseases. According to patients' age and body weight, standard, piggyback, reduced-size, split, or living donor liver transplantation should be performed. Pediatric liver transplantation especially requires higher

  3. Skype me! Socially contingent interactions help toddlers learn language.

    Science.gov (United States)

    Roseberry, Sarah; Hirsh-Pasek, Kathy; Golinkoff, Roberta M

    2014-01-01

    Language learning takes place in the context of social interactions, yet the mechanisms that render social interactions useful for learning language remain unclear. This study focuses on whether social contingency might support word learning. Toddlers aged 24-30 months (N = 36) were exposed to novel verbs in one of three conditions: live interaction training, socially contingent video training over video chat, and noncontingent video training (yoked video). Results suggest that children only learned novel verbs in socially contingent interactions (live interactions and video chat). This study highlights the importance of social contingency in interactions for language learning and informs the literature on learning through screen media as the first study to examine word learning through video chat technology. © 2013 The Authors. Child Development © 2013 Society for Research in Child Development, Inc.

  4. The seroprevalence of Parvovirus B19 among kidney transplant recipients: a single-center study.

    Science.gov (United States)

    Khameneh, Zakieh Rostamzadeh; Sepehrvand, Nariman; Sohrabi, Vahid; Ghasemzadeh, Nazafarin

    2014-01-01

    Parvovirus B19 is a DNA virus that is responsible for causing several diseases in humans. Parvovirus B19-induced persistent anemia is one of its manifestations that is relatively common in transplant recipients. This study was aimed to investigate the seroprevalence of parvovirus B19 among kidney transplant recipients. Ninety-one transplant recipients were selected randomly and were investigated for several variables including age, gender, educational status, history of hemodialysis (HD), history of blood transfusion and immunosuppressive therapy. Two milliliters of blood samples were collected via venipuncture and evaluated for anti-Parvovirus B19 IgG antibody using enzyme-linked immunosorbent assay. All recipients were anemic, with 72.5% of them suffering from severe anemia (Hb ≤ 11 in men and ≤ 10 in women). Sixty-three patients (69.2%) were seropositive for Parvovirus B19. There was no significant difference in age, sex, educational status, history of blood transfusion, history of HD and immunosuppressive therapy between seropositive and seronegative groups. The seroprevalence of Parvovirus B19 was relatively high in kidney transplant recipients in Urmia, Iran. Our study failed to find a correlation between the severity of anemia and the seropositivity of Parvovirus B19.

  5. Pre- and postmortem imaging of transplanted cells

    Directory of Open Access Journals (Sweden)

    Andrzejewska A

    2015-09-01

    Full Text Available Anna Andrzejewska,1 Adam Nowakowski,1 Miroslaw Janowski,1–4 Jeff WM Bulte,3–7 Assaf A Gilad,3,4 Piotr Walczak,3,4,8 Barbara Lukomska11NeuroRepair Department, 2Department of Neurosurgery, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland; 3Russell H Morgan Department of Radiology and Radiological Science, Division of MR Research, 4Cellular Imaging Section and Vascular Biology Program, Institute for Cell Engineering, 5Department of Biomedical Engineering, 6Department of Chemical & Biomolecular Engineering, 7Department of Oncology, The Johns Hopkins University School of Medicine, Baltimore, MD, USA; 8Department of Radiology, Faculty of Medical Sciences, University of Warmia and Mazury, Olsztyn, PolandAbstract: Therapeutic interventions based on the transplantation of stem and progenitor cells have garnered increasing interest. This interest is fueled by successful preclinical studies for indications in many diseases, including the cardiovascular, central nervous, and musculoskeletal system. Further progress in this field is contingent upon access to techniques that facilitate an unambiguous identification and characterization of grafted cells. Such methods are invaluable for optimization of cell delivery, improvement of cell survival, and assessment of the functional integration of grafted cells. Following is a focused overview of the currently available cell detection and tracking methodologies that covers the entire spectrum from pre- to postmortem cell identification.Keywords: stem cells, transplantation, SPECT, MRI, bioluminescence, cell labeling

  6. Integrating team resource management program into staff training improves staff's perception and patient safety in organ procurement and transplantation: the experience in a university-affiliated medical center in Taiwan.

    Science.gov (United States)

    Hsu, Ya-Chi; Jerng, Jih-Shuin; Chang, Ching-Wen; Chen, Li-Chin; Hsieh, Ming-Yuan; Huang, Szu-Fen; Liu, Yueh-Ping; Hung, Kuan-Yu

    2014-08-11

    The process involved in organ procurement and transplantation is very complex that requires multidisciplinary coordination and teamwork. To prevent error during the processes, teamwork education and training might play an important role. We wished to evaluate the efficacy of implementing a Team Resource Management (TRM) program on patient safety and the behaviors of the team members involving in the process. We implemented a TRM training program for the organ procurement and transplantation team members of the National Taiwan University Hospital (NTUH), a teaching medical center in Taiwan. This 15-month intervention included TRM education and training courses for the healthcare workers, focused group skill training for the procurement and transplantation team members, video demonstration and training, and case reviews with feedbacks. Teamwork culture was evaluated and all procurement and transplantation cases were reviewed to evaluate the application of TRM skills during the actual processes. During the intervention period, a total of 34 staff members participated the program, and 67 cases of transplantations were performed. Teamwork framework concept was the most prominent dimension that showed improvement from the participants for training. The team members showed a variety of teamwork behaviors during the process of procurement and transplantation during the intervention period. Of note, there were two potential donors with a positive HIV result, for which the procurement processed was timely and successfully terminated by the team. None of the recipients was transplanted with an infected organ. No error in communication or patient identification was noted during review of the case records. Implementation of a Team Resource Management program improves the teamwork culture as well as patient safety in organ procurement and transplantation.

  7. Bypass during Liver Transplantation: Anachronism or Revival? Liver Transplantation Using a Combined Venovenous/Portal Venous Bypass—Experiences with 163 Liver Transplants in a Newly Established Liver Transplantation Program

    Directory of Open Access Journals (Sweden)

    Anne Mossdorf

    2015-01-01

    Full Text Available Introduction. The venovenous/portal venous (VVP bypass technique has generally become obsolete in liver transplantation (LT today. We evaluated our experience with 163 consecutive LTs that used a VVP bypass. Patients and Methods. The liver transplant program was started in our center in 2010. LTs were performed using an extracorporal bypass device. Results. Mean operative time was 269 minutes and warm ischemic time 43 minutes. The median number of transfusion of packed cells and plasma was 7 and 14. There was no intraoperative death, and the 30-day mortality was 3%. Severe bypass-induced complications did not occur. Discussion. The introduction of a new LT program requires maximum safety measures for all of the parties involved. Both surgical and anaesthesiological management (reperfusion can be controlled very reliably using a VVP bypass device. Particularly when using marginal grafts, this approach helps to minimise both surgical and anaesthesiological complications in terms of less volume overload, less use of vasopressive drugs, less myocardial injury, and better peripheral blood circulation. Conclusion. Based on our experiences while establishing a new liver transplantation program, we advocate the reappraisal of the extracorporeal VVP bypass.

  8. The Role of Relational Information in Contingent Capture

    Science.gov (United States)

    Becker, Stefanie I.; Folk, Charles L.; Remington, Roger W.

    2010-01-01

    On the contingent capture account, top-down attentional control settings restrict involuntary attentional capture to items that match the features of the search target. Attention capture is involuntary, but contingent on goals and intentions. The observation that only target-similar items can capture attention has usually been taken to show that…

  9. An international perspective: job satisfaction among transplant nurses.

    Science.gov (United States)

    Russell, Cynthia L; Van Gelder, Frank

    2008-03-01

    The high demand for transplant nurses across the world leads us to examine job design and job satisfaction because job satisfaction is linked to better outcomes for patients. To describe international transplant nurses' perspectives of job design and job satisfaction by using Herzberg's theory of motivation. Descriptive, correlational design. An electronic version of the Job Design and Job Satisfaction survey was mailed to all members of the International Transplant Nurses Society. A total of 331 members of the International Transplant Nurses Society responded to the survey. The mean age of respondents was 44.12 years, they had worked a mean of 19.12 years in nursing and 10.22 years in transplantation, and 50.6% of respondents were transplant nurse coordinators. Respondents were very satisfied overall with their jobs; they perceived that transplant nursing requires a high level of nonrepetitive, complex skills, autonomy in personal initiative and judgment, cooperation and collaboration with others, and that the job allows for completion of the work. Respondents were satisfied with pay, fringe benefits, and supervision. The feeling that the job could positively and significantly affect others was very strong. Results of this study provide empirical evidence supporting the perceived benefits and challenges of working in transplantation and support Herzberg's theory that motivators leading to job satisfaction include achievement, recognition, the work itself, responsibility, and advancement. Transplant nursing includes many of these motivators and desirable characteristics, including autonomy and working with a multidisciplinary team on a clear, patient-centered goal.

  10. Contingency Contracting within the Department of Defense: A Comparative Analysis

    National Research Council Canada - National Science Library

    McMillion, Chester

    2000-01-01

    .... The thesis compares and contrasts the regulations governing the contingency contracting operations, the organization structure, contingency contracting support plans, and the training requirements...

  11. Liver transplantation in HIV-positive patients: the position of the Brazilian groups.

    Science.gov (United States)

    Brandão, Ajacio Bandeira de Mello; Mariante-Neto, Guilherme

    2005-01-01

    Patients infected with the human immunodeficiency virus (HIV) have generally been excluded from consideration for liver transplantation. Recent advances in the management and prognosis of these patients suggest that this policy must be reevaluated. To identify the current position of Brazilian transplant centers concerning liver transplantation in asymptomatic HIV-infected patients with end-stage liver disease. A structured questionnaire was submitted by e-mail to Brazilian groups who perform liver transplantation and were active in late 2003, according to the Brazilian Association of Organ Transplantation. Of the 53 active groups, 30 e-mail addresses have been found of professionals working in 41 of these groups. Twenty-one responses (70%) were obtained. Most of the professionals (62%) reported that they do not include HIV-infected patients in waiting lists for transplants, primarily on account of the limited world experience. They also reported, however, that this issue will soon be discussed by the group. Those who accept these patients usually follow the guidelines provided by the literature: patients must fulfill the same inclusion criteria as the other patients with end-stage liver diseases, present low or undetectable HIV viral load, and a CD4 count above 250/mm3. They reported that there are 10 HIV-infected patients in waiting list and that only one patient has received a liver transplant in the country. Most centers do not accept in waiting lists for liver transplantation patients with HIV infection, even asymptomatic ones. However, advances in the management of HIV-infected patients suggest that this policy must be reevaluated. In Brazil, there is practically no experience in liver transplantation in HIV-positive patients.

  12. 48 CFR 403.405 - Misrepresentations or violations of the Covenant Against Contingent Fees.

    Science.gov (United States)

    2010-10-01

    ... violations of the Covenant Against Contingent Fees. 403.405 Section 403.405 Federal Acquisition Regulations... Contingent Fees 403.405 Misrepresentations or violations of the Covenant Against Contingent Fees. (a) A suspected misrepresentation or violation of the Covenant Against Contingent Fees shall be documented in...

  13. Tolerability of sirolimus: a decade of experience at a single cardiac transplant center.

    Science.gov (United States)

    Thibodeau, Jennifer T; Mishkin, Joseph D; Patel, Parag C; Kaiser, Patricia A; Ayers, Colby R; Mammen, Pradeep P A; Markham, David W; Ring, William Steves; Peltz, Matthias; Drazner, Mark H

    2013-01-01

    Sirolimus is used in cardiac transplant recipients to prevent rejection, progression of cardiac allograft vasculopathy, and renal dysfunction. However, sirolimus has many potential side effects and its tolerability when used outside of clinical trials is not well established. We describe a decade of experience with sirolimus in cardiac transplant recipients at our institution. We retrospectively reviewed records of all adult cardiac transplant recipients living between September 1999 and February 2010 (n = 329) and identified 67 patients (20%) who received sirolimus. The indications for sirolimus were cardiac allograft vasculopathy (67%), renal dysfunction (25%), rejection (4%), and intolerability of tacrolimus (3%). One-third of patients discontinued sirolimus at a median (25th, 75th percentiles) of 0.9 (0.2, 1.6) yr of duration. Over 70% of subjects experienced an adverse event attributed to sirolimus. Adverse events were associated with higher average sirolimus levels (9.1 ng/mL vs. 7.1 ng/mL, p = 0.004). We conclude that sirolimus is frequently used in cardiac transplant recipients (20%) and commonly causes side effects, often necessitating discontinuation. Higher average sirolimus levels were associated with adverse events, suggesting that tolerability may improve if levels are maintained within the lower end of the current therapeutic range; however, the improvement in tolerability would need to be balanced with the potential for decreased efficacy. © 2013 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  14. Dengue Contingency Planning: From Research to Policy and Practice

    Science.gov (United States)

    Runge-Ranzinger, Silvia; Kroeger, Axel; Olliaro, Piero; McCall, Philip J.; Sánchez Tejeda, Gustavo; Lloyd, Linda S.; Hakim, Lokman; Bowman, Leigh R.; Horstick, Olaf; Coelho, Giovanini

    2016-01-01

    Background Dengue is an increasingly incident disease across many parts of the world. In response, an evidence-based handbook to translate research into policy and practice was developed. This handbook facilitates contingency planning as well as the development and use of early warning and response systems for dengue fever epidemics, by identifying decision-making processes that contribute to the success or failure of dengue surveillance, as well as triggers that initiate effective responses to incipient outbreaks. Methodology/Principal findings Available evidence was evaluated using a step-wise process that included systematic literature reviews, policymaker and stakeholder interviews, a study to assess dengue contingency planning and outbreak management in 10 countries, and a retrospective logistic regression analysis to identify alarm signals for an outbreak warning system using datasets from five dengue endemic countries. Best practices for managing a dengue outbreak are provided for key elements of a dengue contingency plan including timely contingency planning, the importance of a detailed, context-specific dengue contingency plan that clearly distinguishes between routine and outbreak interventions, surveillance systems for outbreak preparedness, outbreak definitions, alert algorithms, managerial capacity, vector control capacity, and clinical management of large caseloads. Additionally, a computer-assisted early warning system, which enables countries to identify and respond to context-specific variables that predict forthcoming dengue outbreaks, has been developed. Conclusions/Significance Most countries do not have comprehensive, detailed contingency plans for dengue outbreaks. Countries tend to rely on intensified vector control as their outbreak response, with minimal focus on integrated management of clinical care, epidemiological, laboratory and vector surveillance, and risk communication. The Technical Handbook for Surveillance, Dengue Outbreak

  15. Renal transplantation in high cardiovascular risk patients.

    Science.gov (United States)

    Bittar, Julio; Arenas, Paula; Chiurchiu, Carlos; de la Fuente, Jorge; de Arteaga, Javier; Douthat, Walter; Massari, Pablo U

    2009-10-01

    Current transplant success allows recipients with previous contraindications to transplant to have access to this procedure with more frequency and safety. The concept of high-risk patient has changed since the first stages of transplantation. In the first studies, the high-risk concept was based on probability of early graft failure or on a patient's clinical condition to cope with high perioperatory morbimortality. Later on, this concept implied immunological factors that were crucial to ensure transplant success because hypersensitized or polytransfused patients experienced a higher risk of acute rejection and subsequent graft loss. Afterward, the presence of various comorbidities would redefine the high-risk concept for renal transplant mainly considering recipient's clinical aspects. Currently, the change in epidemiological characteristics of patients starting dialysis causes that we now deal with a greater increase of elderly patients, diabetic patients, and patients with history of cardiovascular disease. Today, high-risk patients are those with clinical features that predict an increase in the risk of perioperative morbimortality or death with functioning graft. In this review, we will attempted to analyze currents results of renal transplant outcomes in terms of patients and graft survival in elderly patients, diabetic patients, and patients with previous cardiovascular disease from the most recent experiences in the literature and from experiences in our center. In any of the groups previously analyzed, survival offered by renal transplant is significantly higher compared to dialysis. Besides, these patients are the recipient group that benefit the most with the transplant because their mortality while remaining on dialysis is extremely high. Hence, renal transplantation should be offered more frequently to older patients, diabetic patients, and patients with pretransplant cardiac and peripheral vascular disease. A positive attitude toward renal

  16. Independent Pre-Transplant Recipient Cancer Risk Factors after Kidney Transplantation and the Utility of G-Chart Analysis for Clinical Process Control.

    Directory of Open Access Journals (Sweden)

    Harald Schrem

    Full Text Available The aim of this study is to identify independent pre-transplant cancer risk factors after kidney transplantation and to assess the utility of G-chart analysis for clinical process control. This may contribute to the improvement of cancer surveillance processes in individual transplant centers.1655 patients after kidney transplantation at our institution with a total of 9,425 person-years of follow-up were compared retrospectively to the general German population using site-specific standardized-incidence-ratios (SIRs of observed malignancies. Risk-adjusted multivariable Cox regression was used to identify independent pre-transplant cancer risk factors. G-chart analysis was applied to determine relevant differences in the frequency of cancer occurrences.Cancer incidence rates were almost three times higher as compared to the matched general population (SIR = 2.75; 95%-CI: 2.33-3.21. Significantly increased SIRs were observed for renal cell carcinoma (SIR = 22.46, post-transplant lymphoproliferative disorder (SIR = 8.36, prostate cancer (SIR = 2.22, bladder cancer (SIR = 3.24, thyroid cancer (SIR = 10.13 and melanoma (SIR = 3.08. Independent pre-transplant risk factors for cancer-free survival were age 62.6 years (p = 0.001, HR: 1.29, polycystic kidney disease other than autosomal dominant polycystic kidney disease (ADPKD (p = 0.001, HR: 0.68, high body mass index in kg/m2 (p<0.001, HR: 1.04, ADPKD (p = 0.008, HR: 1.26 and diabetic nephropathy (p = 0.004, HR = 1.51. G-chart analysis identified relevant changes in the detection rates of cancer during aftercare with no significant relation to identified risk factors for cancer-free survival (p<0.05.Risk-adapted cancer surveillance combined with prospective G-chart analysis likely improves cancer surveillance schemes by adapting processes to identified risk factors and by using G-chart alarm signals to trigger Kaizen events and audits for root-cause analysis of relevant detection rate changes

  17. Category learning in the color-word contingency learning paradigm.

    Science.gov (United States)

    Schmidt, James R; Augustinova, Maria; De Houwer, Jan

    2018-04-01

    In the typical color-word contingency learning paradigm, participants respond to the print color of words where each word is presented most often in one color. Learning is indicated by faster and more accurate responses when a word is presented in its usual color, relative to another color. To eliminate the possibility that this effect is driven exclusively by the familiarity of item-specific word-color pairings, we examine whether contingency learning effects can be observed also when colors are related to categories of words rather than to individual words. To this end, the reported experiments used three categories of words (animals, verbs, and professions) that were each predictive of one color. Importantly, each individual word was presented only once, thus eliminating individual color-word contingencies. Nevertheless, for the first time, a category-based contingency effect was observed, with faster and more accurate responses when a category item was presented in the color in which most of the other items of that category were presented. This finding helps to constrain episodic learning models and sets the stage for new research on category-based contingency learning.

  18. Acquisition of automatic imitation is sensitive to sensorimotor contingency.

    Science.gov (United States)

    Cook, Richard; Press, Clare; Dickinson, Anthony; Heyes, Cecilia

    2010-08-01

    The associative sequence learning model proposes that the development of the mirror system depends on the same mechanisms of associative learning that mediate Pavlovian and instrumental conditioning. To test this model, two experiments used the reduction of automatic imitation through incompatible sensorimotor training to assess whether mirror system plasticity is sensitive to contingency (i.e., the extent to which activation of one representation predicts activation of another). In Experiment 1, residual automatic imitation was measured following incompatible training in which the action stimulus was a perfect predictor of the response (contingent) or not at all predictive of the response (noncontingent). A contingency effect was observed: There was less automatic imitation indicative of more learning in the contingent group. Experiment 2 replicated this contingency effect and showed that, as predicted by associative learning theory, it can be abolished by signaling trials in which the response occurs in the absence of an action stimulus. These findings support the view that mirror system development depends on associative learning and indicate that this learning is not purely Hebbian. If this is correct, associative learning theory could be used to explain, predict, and intervene in mirror system development.

  19. Contingency learning in alcohol dependence and pathological gambling: learning and unlearning reward contingencies

    NARCIS (Netherlands)

    Vanes, L.D.; Holst, R.J. van; Jansen, J.M.; Brink, W. van den; Oosterlaan, J.; Goudriaan, A.E.

    2014-01-01

    BACKGROUND: Patients with alcohol dependence (AD) and pathological gambling (PG) are characterized by dysfunctional reward processing and their ability to adapt to alterations of reward contingencies is impaired. However, most neurocognitive tasks investigating reward processing involve a complex

  20. Contingency Learning in Alcohol Dependence and Pathological Gambling: Learning and Unlearning Reward Contingencies

    NARCIS (Netherlands)

    Vanes, L.D.; Holst, R.; Jansen, J.D.; van den Brink, W.A.; Oosterlaan, J.; Goudriaan, A.E.

    2014-01-01

    Background: Patients with alcohol dependence (AD) and pathological gambling (PG) are characterized by dysfunctional reward processing and their ability to adapt to alterations of reward contingencies is impaired. However, most neurocognitive tasks investigating reward processing involve a complex

  1. 75 FR 27986 - Electronic Filing System-Web (EFS-Web) Contingency Option

    Science.gov (United States)

    2010-05-19

    ...] Electronic Filing System--Web (EFS-Web) Contingency Option AGENCY: United States Patent and Trademark Office... contingency option when the primary portal to EFS-Web has an unscheduled outage. Previously, the entire EFS-Web system is not available to the users during such an outage. The contingency option in EFS-Web will...

  2. The Graduate School and Its Organizational Structure: A Contingency Theory Approach.

    Science.gov (United States)

    Sanford, Judith Babcock

    Contingency theory, the formal structure of graduate schools, and the applicability of contingency variables to graduate schools as organizations are examined. Contingency theory is based on an open systems concept that views an organization as composed of many interdependent parts that are interacting with one another. It also holds that under…

  3. Contraception and fertility awareness among women with solid organ transplants.

    Science.gov (United States)

    French, Valerie A; Davis, John S; Sayles, Harlan S; Wu, Serena S

    2013-10-01

    To assess the contraception and fertility counseling provided to women with solid organ transplants. A telephone survey of 309 women aged 19-49 years who had received a solid organ transplant at the University of Nebraska Medical Center was performed. Of the 309 eligible women, 183 responded. Patients were asked 19 questions regarding pretransplant and posttransplant fertility awareness and contraception counseling. Data were summarized using descriptive statistics. Patients had undergone a variety of solid organ transplantations: 40% kidney (n=73); 32% liver (n=59); 6% pancreas (n=11); 5% heart (n=9); 3% intestine (n=5); and 14% multiple organs (n=26). Before their transplantations, 79 women (44%) reported they were not aware that a woman could become pregnant after transplantation. Only 66 women aged 13 and older at the time of transplantation reported that a health care provider discussed contraception before transplantation. Approximately half of women surveyed were using a method of contraception. Oral contraceptive pills were the most commonly recommended method. Twenty-two of the 31 pregnancies after organ transplantation were planned, which is higher than that of the general population. Few women with transplants are educated regarding the effect of organ transplantation on fertility and are not routinely counseled about contraception or the potential for posttransplant pregnancy. Health care providers should incorporate contraceptive and fertility counseling as part of routine care for women with solid organ transplants. : II.

  4. Contingency Table Browser - prediction of early stage protein structure.

    Science.gov (United States)

    Kalinowska, Barbara; Krzykalski, Artur; Roterman, Irena

    2015-01-01

    The Early Stage (ES) intermediate represents the starting structure in protein folding simulations based on the Fuzzy Oil Drop (FOD) model. The accuracy of FOD predictions is greatly dependent on the accuracy of the chosen intermediate. A suitable intermediate can be constructed using the sequence-structure relationship information contained in the so-called contingency table - this table expresses the likelihood of encountering various structural motifs for each tetrapeptide fragment in the amino acid sequence. The limited accuracy with which such structures could previously be predicted provided the motivation for a more indepth study of the contingency table itself. The Contingency Table Browser is a tool which can visualize, search and analyze the table. Our work presents possible applications of Contingency Table Browser, among them - analysis of specific protein sequences from the point of view of their structural ambiguity.

  5. Dissociating Contingency Awareness and Conditioned Attitudes: Evidence of Contingency-Unaware Evaluative Conditioning

    Science.gov (United States)

    Hutter, Mandy; Sweldens, Steven; Stahl, Christoph; Unkelbach, Christian; Klauer, Karl Christoph

    2012-01-01

    Whether human evaluative conditioning can occur without contingency awareness has been the subject of an intense and ongoing debate for decades, troubled by a wide array of methodological difficulties. Following recent methodological innovations, the available evidence currently points to the conclusion that evaluative conditioning effects do not…

  6. Color and Contingency in Robert Boyle's Works.

    Science.gov (United States)

    Baker, Tawrin

    2015-01-01

    This essay investigates the relationship between color and contingency in Robert Boyle's Experiments and Considerations Touching Colours (1664) and his essays on the unsuccessfulness of experiments in Certain Physiological Essays (1661). In these two works Boyle wrestles with a difficult practical and philosophical problem with experiments, which he calls the problem of contingency. In Touching Colours, the problem of contingency is magnified by the much-debated issue of whether color had any deep epistemic importance. His limited theoretical principle guiding him in Touching Colours, that color is but modified light, further exacerbated the problem. Rather than theory, Boyle often relied on craftsmen, whose mastery of color phenomena was, Boyle mentions, brought about by economic forces, to determine when colors were indicators of important 'inward' properties of substances, and thus to secure a solid foundation for his experimental history of color.

  7. Application of the double-contingency principle within BNFL

    International Nuclear Information System (INIS)

    Strafford, P.I.D.

    1995-01-01

    Historically, the double-contingency principle has been used for criticality assessment within British Nuclear Fuels plc (BNFL). This paper outlines what is understood by the double-contingency principle to illustrate how it is applied in criticality safety assessments and to highlight various problem areas that are encountered and, where possible, how they might be solved

  8. Bariatric Surgery to Target Obesity in the Renal Transplant Population: Preliminary Experience in a Single Center.

    Science.gov (United States)

    Gazzetta, P G; Bissolati, M; Saibene, A; Ghidini, C G A; Guarneri, G; Giannone, F; Adamenko, O; Secchi, A; Rosati, R; Socci, C

    2017-05-01

    During the last century, obesity has become a global epidemic. The effect of obesity on renal transplantation may occur in perioperative complications and impairment of organ function. Obese patients have metabolic derangements that can be exacerbated after transplantation and obesity directly impacts most transplantation outcomes. These recipients are more likely to develop adverse graft events, such as delayed graft function and early graft loss. Furthermore, obesity is synergic to some immunosuppressive agents in triggering diabetes and hypertension. As behavioral weight loss programs show disappointing results in these patients, bariatric surgery has been considered as a means to achieve rapid and long-term weight loss. Up-to-date literature shows laparoscopic bariatric surgery is feasible and safe in transplantation candidates and increases the rate of transplantation eligibility in obese patients with end-stage organ disease. There is no evidence that restrictive procedures modify the absorption of immunosuppressive medications. From 2013 to 2016 we performed six bariatric procedures (sleeve gastrectomy) on obese patients with renal transplantation; mean preoperative body mass index (BMI) was 39.8 kg/m 2 . No postoperative complication was observed and no change in the immunosuppressive medications regimen was needed. Mean observed estimated weight loss was 27.6%, 44.1%, 74.2%, and 75.9% at 1, 3, 6, and 12 months follow-up, respectively. Our recommendation is to consider patients with BMI >30 kg/m 2 as temporarily ineligible for transplantation and as candidates to bariatric surgery if BMI >35 kg/m 2 . We consider laparoscopic sleeve gastrectomy as a feasible, first-choice procedure in this specific population. Copyright © 2017 Elsevier Inc. All rights reserved.

  9. Suited Contingency Ops Food - 2

    Science.gov (United States)

    Glass, J. W.; Leong, M. L.; Douglas, G. L.

    2014-01-01

    The contingency scenario for an emergency cabin depressurization event may require crewmembers to subsist in a pressurized suit for up to 144 hours. This scenario requires the capability for safe nutrition delivery through a helmet feed port against a 4 psi pressure differential to enable crewmembers to maintain strength and cognition to perform critical tasks. Two nutritional delivery prototypes were developed and analyzed for compatibility with the helmet feed port interface and for operational effectiveness against the pressure differential. The bag-in-bag (BiB) prototype, designed to equalize the suit pressure with the beverage pouch and enable a crewmember to drink normally, delivered water successfully to three different subjects in suits pressurized to 4 psi. The Boa restrainer pouch, designed to provide mechanical leverage to overcome the pressure differential, did not operate sufficiently. Guidelines were developed and compiled for contingency beverages that provide macro-nutritional requirements, a minimum one-year shelf life, and compatibility with the delivery hardware. Evaluation results and food product parameters have the potential to be used to improve future prototype designs and develop complete nutritional beverages for contingency events. These feeding capabilities would have additional use on extended surface mission EVAs, where the current in-suit drinking device may be insufficient.

  10. Infectious Disease Transmission during Transfusion and Transplantation

    Centers for Disease Control (CDC) Podcasts

    2012-08-13

    Dr. Matthew Kuehnert, Director of the Office of Blood, Organ, and Other Tissue Safety, discusses infections in transplants.  Created: 8/13/2012 by National Center for Emerging and Zoonotic Infectious Diseases (NCEZID).   Date Released: 8/15/2012.

  11. Distinct Motivational Effects of Contingent and Noncontingent Rewards.

    Science.gov (United States)

    Manohar, Sanjay G; Finzi, Rebecca Dawn; Drew, Daniel; Husain, Masud

    2017-07-01

    When rewards are available, people expend more energy, increasing their motivational vigor. In theory, incentives might drive behavior for two distinct reasons: First, they increase expected reward; second, they increase the difference in subjective value between successful and unsuccessful performance, which increases contingency-the degree to which action determines outcome. Previous studies of motivational vigor have never compared these directly. Here, we indexed motivational vigor by measuring the speed of eye movements toward a target after participants heard a cue indicating how outcomes would be determined. Eye movements were faster when the cue indicated that monetary rewards would be contingent on performance than when the cue indicated that rewards would be random. But even when the cue indicated that a reward was guaranteed regardless of speed, movement was still faster than when no reward was available. Motivation by contingent and certain rewards was uncorrelated across individuals, which suggests that there are two separable, independent components of motivation. Contingent motivation generated autonomic arousal, and unlike noncontingent motivation, was effective with penalties as well as rewards.

  12. Contingency learning in alcohol dependence and pathological gambling: learning and unlearning reward contingencies

    NARCIS (Netherlands)

    Vanes, Lucy D.; van Holst, Ruth J.; Jansen, Jochem M.; van den Brink, Wim; Oosterlaan, Jaap; Goudriaan, Anna E.

    2014-01-01

    Patients with alcohol dependence (AD) and pathological gambling (PG) are characterized by dysfunctional reward processing and their ability to adapt to alterations of reward contingencies is impaired. However, most neurocognitive tasks investigating reward processing involve a complex mix of

  13. Graft microvascular disease in solid organ transplantation.

    Science.gov (United States)

    Jiang, Xinguo; Sung, Yon K; Tian, Wen; Qian, Jin; Semenza, Gregg L; Nicolls, Mark R

    2014-08-01

    Alloimmune inflammation damages the microvasculature of solid organ transplants during acute rejection. Although immunosuppressive drugs diminish the inflammatory response, they do not directly promote vascular repair. Repetitive microvascular injury with insufficient regeneration results in prolonged tissue hypoxia and fibrotic remodeling. While clinical studies show that a loss of the microvascular circulation precedes and may act as an initiating factor for the development of chronic rejection, preclinical studies demonstrate that improved microvascular perfusion during acute rejection delays and attenuates tissue fibrosis. Therefore, preservation of a functional microvasculature may represent an effective therapeutic strategy for preventing chronic rejection. Here, we review recent advances in our understanding of the role of the microvasculature in the long-term survival of transplanted solid organs. We also highlight microvessel-centered therapeutic strategies for prolonging the survival of solid organ transplants.

  14. ACCOUNTING FOR CONTINGENT CONSIDERATIONS IN BUSINESS COMBINATIONS

    OpenAIRE

    Gurgen KALASHYAN

    2017-01-01

    According to IFRS 3 Business Combinations contingent considerations must be included in the total consideration given for the acquired entity along with cash, other assets, ordinary or preference equity instruments, options, warrants. The contingent consideration is the determined amount which acquiring entity has to pay to acquired entity provided, that certain conditions will be fulfilled in the future. In case the provisions are not satisfied, we will get the situation when the amount of c...

  15. Evaluation of the stages involved in cold ischemia time in renal transplants in Chile.

    Science.gov (United States)

    Elgueta, S; Fuentes, C; Arenas, A; Labraña, C; Gajardo, J G; Lopez, M; Hernandez, J; Rodriguez, H; Rodriguez, L

    2010-01-01

    Cold ischemia time (CIT) is one of the factors that determine the evolution of a renal transplant; taking measures to reduce this time requires knowledge of its stages. The objective of this study was to evaluate the times in the stages that determine CIT in renal transplants. We analyzed 108 donors and 201 kidney transplantations performed in Chile in 2008, establishing the CIT for the kidney transplanted by the center that extracted the kidneys (local kidney) and for the kidney transplanted in another center (shared kidney). Average CIT was 18.8 hours: namely, 16.9 hours for local and 20.2 hours for shared kidneys (P = .0001484). CIT for cases in which samples were sent to histocompatibility laboratory prior to nephrectomy was 7.3 hours less than for those sent postnephrectomy. The mean time between the allocation of the kidney and the transplant was 7.3 hours; 5.6 hours for local kidneys and 8.4 hours for shared kidneys (P = .000007124). We identified the stages at which intervention is possible to reduce the CIT, mainly for shared kidneys. All involved parties should make an effort to reduce this time.

  16. Allogeneic hematopoietic stem cell transplantation in children with primary immunodeficiencies: Hospital Israelita Albert Einstein experience

    Directory of Open Access Journals (Sweden)

    Juliana Folloni Fernandes

    2011-06-01

    Full Text Available Objective: To report the experience of a tertiary care hospital withallogeneic hematopoietic stem cell transplantation in children withprimary immunodeficiencies. Methods: Seven patients with primaryimmunodeficiencies (severe combined immunodeficiency: n = 2;combined immunodeficiency: n = 1; chronic granulomatous disease:n = 1; hyper-IgM syndrome: n = 2; and IPEX syndrome: n = 1who underwent eight hematopoietic stem cell transplants (HSCTin a single center, from 2007 to 2010, were studied. Results: Twopatients received transplants from HLA-identical siblings; the othersix transplants were done with unrelated donors (bone marrow: n= 1; cord blood: n = 5. All patients had pre-existing infectionsbefore hematopoietic stem cell transplants. One patient receivedonly anti-thymocyte globulin prior to transplant, three transplantswere done with reduced intensity conditioning regimens and fourtransplants were done after myeloablative therapy. Two patientswere not evaluable for engraftment due to early death. Three patientsengrafted, two had primary graft failure and one received a secondtransplant with posterior engraftment. Two patients died of regimenrelated toxicity (hepatic sinusoidal obstruction syndrome; one patient died of progressive respiratory failure due to Parainfluenza infection diagnosed prior to transplant. Four patients are alive and well from 60 days to 14 months after transplant. Conclusion: Patients’ status prior to transplant is the most important risk factor on the outcome of hematopoietic stem cell transplants in the treatment of these diseases. Early diagnosis and the possibility of a faster referral of these patients for treatment in reference centers may substantially improve their survival and quality of life.

  17. The Privilege of Induction Avoidance and Calcineurin Inhibitors Withdrawal in 2 Haplotype HLA Matched White Kidney Transplantation.

    Science.gov (United States)

    Brifkani, Zaid; Brennan, Daniel C; Lentine, Krista L; Horwedel, Timothy A; Malone, Andrew F; Delos Santos, Rowena; Maw, Thin Thin; Alhamad, Tarek

    2017-03-01

    White recipients of 2-haplotype HLA-matched living kidney transplants are perceived to be of low immunologic risk. Little is known about the safety of induction avoidance and calcineurin inhibitor withdrawal in these patients. We reviewed our experience at a single center and compared it to Organ Procurement and Transplantation Network (OPTN) registry data and only included 2-haplotype HLA-matched white living kidney transplants recipients between 2000 and 2013. There were 56 recipients in a single center (where no induction was given) and 2976 recipients in the OPTN. Among the OPTN recipients, 1285 received no induction, 903 basiliximab, 608 thymoglobulin, and 180 alemtuzumab. First-year acute rejection rates were similar after induction-free transplantation among the center and induced groups nationally. Compared with induction-free transplantation in the national data, there was no decrease in graft failure risk over 13 years with use of basiliximab (adjusted hazard ratio [aHR], 0.86; confidence interval [CI], 0.68-1.08), Thymoglobulin (aHR, 0.92; CI, 0.7-1.21) or alemtuzumab (aHR, 1.18; CI, 0.72-1.93). Among induction-free recipients at the center, calcineurin inhibitor withdrawal at 1 year (n = 27) did not significantly impact graft failure risk (HR,1.62; CI, 0.38-6.89). This study may serve as a foundation for further studies to provide personalized, tailored, immunosuppression for this very low-risk population of kidney transplant patients.

  18. The seroprevalence of parvovirus B19 among kidney transplant recipients: A single-center study

    Directory of Open Access Journals (Sweden)

    Zakieh Rostamzadeh Khameneh

    2014-01-01

    Full Text Available Parvovirus B19 is a DNA virus that is responsible for causing several diseases in humans. Parvovirus B19-induced persistent anemia is one of its manifestations that is relatively common in transplant recipients. This study was aimed to investigate the seroprevalence of parvovirus B19 among kidney transplant recipients. Ninety-one transplant recipients were selected randomly and were investigated for several variables including age, gender, educational status, history of hemodialysis (HD, history of blood transfusion and immunosuppressive therapy. Two milliliters of blood samples were collected via venipuncture and evaluated for anti-Parvovirus B19 IgG antibody using enzyme-linked immunosorbent assay. All recipients were anemic, with 72.5% of them suffering from severe anemia (Hb ≤ 11 in men and ≤ 10 in women. Sixty-three patients (69.2% were seropositive for Parvovirus B19. There was no significant difference in age, sex, educational status, history of blood transfusion, history of HD and immunosuppressive therapy between seropositive and seronegative groups. The seroprevalence of Parvovirus B19 was relatively high in kidney transplant recipients in Urmia, Iran. Our study failed to find a correlation between the severity of anemia and the seropositivity of Parvovirus B19.

  19. An Improved On-line Contingency Screening for Power System Transient Stability Assessment

    DEFF Research Database (Denmark)

    Weckesser, Johannes Tilman Gabriel; Jóhannsson, Hjörtur; Glavic, Mevludin

    2017-01-01

    This paper presents a contingency screening method and a framework for its on-line implementation. The proposed method carries out contingency screening and on-line stability assessment with respect to first-swing transient stability. For that purpose, it utilizes the single machine equivalent...... method and aims at improving the prior developed contingency screening approaches. In order to determine vulnerability of the system with respect to a particular contingency, only one time-domain simulation needs to be performed. An early stop criteria is proposed so that in a majority of the cases...... the simulation can be terminated after a few hundred milliseconds of simulated system response. The method's outcome is an assessment of the system's stability and a classification of each considered contingency. The contingencies are categorized by exploiting parameters of an equivalent one machine infinite bus...

  20. Contingency inferences driven by base rates: Valid by sampling

    Directory of Open Access Journals (Sweden)

    Florian Kutzner

    2011-04-01

    Full Text Available Fiedler et al. (2009, reviewed evidence for the utilization of a contingency inference strategy termed pseudocontingencies (PCs. In PCs, the more frequent levels (and, by implication, the less frequent levels are assumed to be associated. PCs have been obtained using a wide range of task settings and dependent measures. Yet, the readiness with which decision makers rely on PCs is poorly understood. A computer simulation explored two potential sources of subjective validity of PCs. First, PCs are shown to perform above chance level when the task is to infer the sign of moderate to strong population contingencies from a sample of observations. Second, contingency inferences based on PCs and inferences based on cell frequencies are shown to partially agree across samples. Intriguingly, this criterion and convergent validity are by-products of random sampling error, highlighting the inductive nature of contingency inferences.

  1. A multivariate analysis of pre-, peri-, and post-transplant factors affecting outcome after pediatric liver transplantation.

    Science.gov (United States)

    McDiarmid, Sue V; Anand, Ravinder; Martz, Karen; Millis, Michael J; Mazariegos, George

    2011-07-01

    The purpose of this study was to identify significant, independent factors that predicted 6 month patient and graft survival after pediatric liver transplantation. The Studies of Pediatric Liver Transplantation (SPLIT) is a multicenter database established in 1995, of currently more than 4000 US and Canadian children undergoing liver transplantation. Previous published analyses from this data have examined specific factors influencing outcome. This study analyzes a comprehensive range of factors that may influence outcome from the time of listing through the peri- and postoperative period. A total of 42 pre-, peri- and posttransplant variables evaluated in 2982 pediatric recipients of a first liver transplant registered in SPLIT significant at the univariate level were included in multivariate models. In the final model combining all baseline and posttransplant events, posttransplant complications had the highest relative risk of death or graft loss. Reoperation for any cause increased the risk for both patient and graft loss by 11 fold and reoperation exclusive of specific complications by 4 fold. Vascular thromboses, bowel perforation, septicemia, and retransplantation, each independently increased the risk of patient and graft loss by 3 to 4 fold. The only baseline factor with a similarly high relative risk for patient and graft loss was recipient in the intensive care unit (ICU) intubated at transplant. A significant center effect was also found but did not change the impact of the highly significant factors already identified. We conclude that the most significant factors predicting patient and graft loss at 6 months in children listed for transplant are posttransplant surgical complications.

  2. The contingent valuation method: a review

    International Nuclear Information System (INIS)

    Venkatachalam, L.

    2004-01-01

    The contingent valuation method (CVM) is a simple, flexible nonmarket valuation method that is widely used in cost-benefit analysis and environmental impact assessment. However, this method is subject to severe criticism. The criticism revolves mainly around two aspects, namely, the validity and the reliability of the results, and the effects of various biases and errors. The major objective of this paper is to review the recent developments on measures to address the validity and reliability issues arising out of different kinds of biases/errors and other related empirical and methodological issues concerning contingent valuation method

  3. The psychosocial implications of pre-emptive transplantation.

    Science.gov (United States)

    Cole, B R

    1991-01-01

    Pre-emptive (primary) renal transplantation is occurring with greater frequency as pediatric transplant centers attempt to initiate renal replacement therapy at a time best designed to optimize growth and development in children. Psychosocial benefits of performing pre-emptive transplant are highlighted by an intervention before the child has symptoms of uremia and, thus, develops a self-image as a "sick patient with end-stage renal disease", avoidance of dependence on machine technology, avoidance of a change in parenting that may occur with fears about dialysis, and maintenance of an orientation toward future goals. In addition, the child will likely have less loss of school time and less disturbance in previously established social patterns. Difficulties that may be enhanced in pre-emptive transplantation arise from potentially decreased involvement of the child and family in the medical (transplant) care system prior to transplantation. The two major issues of concern are: (1) optimal education regarding patient (family) responsibility toward quality care of the graft recipient; (2) the accurate assessment of coping skills coupled with the development of optimum psychosocial support from the health care workers and community support services. The provision of a good educational and supportive program is time consuming and financially draining. We must develop creative approaches to these areas in order to enhance each child's opportunity for family and community interaction, as well as physical well-being.

  4. Post-transplant soluble CD30 levels are associated with early subclinical rejection in kidney transplantation.

    Science.gov (United States)

    Grenzi, Patricia C; Campos, Érika F; Silva, Hélio T; Felipe, Claudia R; Franco, Marcelo F; Soares, Maria F; Medina-Pestana, José O; Gerbase-DeLima, Maria

    2015-03-01

    Several studies have shown association of high pre- or post-transplant levels of soluble CD30 (sCD30) with acute rejection and poor late kidney transplant outcome. Our goal was to investigate whether sCD30 levels at month-3 post-transplant are associated with subclinical rejection, presence of CD30(+) cells within the graft, and expression of immune response genes in peripheral blood mononuclear cells. The study comprised 118 adult first kidney graft recipients, transplanted at a single center, receiving tacrolimus in low concentration. All were submitted to a protocol biopsy at month-3. Subclinical rejection was identified in 10 biopsies and sCD30 levels ≥ 61.88 ng/mL (P = 0.004), younger recipient age (P = 0.030) and non-Caucasian ethnicity (P = 0.011) were independently associated with this outcome. Rare CD30(+) cells were present in only two biopsies. There was a correlation between sCD30 levels and CD30 gene expression in peripheral blood mononuclear cells (r = 0.385, P = 0.043). These results show that high sCD30 levels are independent predictors of graft dysfunction and may contribute to patient selection protocols by indicating those who could benefit from a more thorough evaluation. Copyright © 2015 Elsevier B.V. All rights reserved.

  5. Islet Transplantation without Borders Enabling islet transplantation in Greece with international collaboration and innovative technology

    Science.gov (United States)

    Papas, Klearchos K; Karatzas, Theodore; Berney, Thierry; Minor, Thomas; Pappas, Paris; Pattou, François; Shaw, James; Toso, Christian; Schuurman, Henk-Jan

    2012-01-01

    Recently, initiatives have been undertaken to establish an islet transplantation program in Athens, Greece. A major hurtle is the high cost associated with the establishment and maintenance of a clinical-grade islet manufacturing center. A collaboration was established with the University Hospitals of Geneva, Switzerland, to enable remote islet cell manufacturing with an established and validated fully operational team. However, remote islet manufacturing requires shipment of the pancreas from the procurement to the islet manufacturing site (in this case from anywhere in Greece to Geneva) and then shipment of the islets from the manufacturing site to the transplant site (from Geneva to Athens). To address challenges related to cold ischemia time of the pancreas and shipment time of islets, a collaboration was initiated with the University of Arizona, Tucson, USA. An international workshop was held in Athens, December 2011, to mark the start of this collaborative project. Experts in the field presented in three main sessions: [1] Islet transplantation: state-of-the-art, and the “network approach”; [2] Technical aspects of clinical islet transplantation and outcomes; and [3] Islet manufacturing – from the donated pancreas to the islet product. This manuscript presents a summary of the workshop. PMID:23330863

  6. Recipient characteristics and morbidity and mortality after liver transplantation.

    Science.gov (United States)

    Asrani, Sumeet K; Saracino, Giovanna; O'Leary, Jacqueline G; Gonzales, Stevan; Kim, Peter T; McKenna, Greg J; Klintmalm, Goran; Trotter, James

    2018-02-15

    Over the last decade, liver transplantation of sicker, older non-hepatitis C cirrhotics with multiple co-morbidities has increased in the United States. We sought to identify an easily applicable set of recipient factors among HCV negative adult transplant recipients associated with significant morbidity and mortality within five years after liver transplantation. We collected national (n = 31,829, 2002-2015) and center-specific data. Coefficients of relevant recipient factors were converted to weighted points and scaled from 0-5. Recipient factors associated with graft failure included: ventilator support (five patients; hazard ratio [HR] 1.59; 95% CI 1.48-1.72); recipient age >60 years (three patients; HR 1.29; 95% CI 1.23-1.36); hemodialysis (three patients; HR 1.26; 95% CI 1.16-1.37); diabetes (two patients; HR 1.20; 95% CI 1.14-1.27); or serum creatinine ≥1.5 mg/dl without hemodialysis (two patients; HR 1.15; 95% CI 1.09-1.22). Graft survival within five years based on points (any combination) was 77.2% (0-4), 69.1% (5-8) and 57.9% (>8). In recipients with >8 points, graft survival was 42% (model for end-stage liver disease [MELD] score recipients receiving grafts from donors with a donor risk index >1.7. In center-specific data within the first year, subjects with ≥5 points (vs. 0-4) had longer hospitalization (11 vs. 8 days, p need to be reassessed. The proposed clinical tool may be helpful for center-specific assessment of risk of graft failure in non-HCV patients and for discussion regarding relevant morbidity in selected subsets. Over the last decade, liver transplantation of sicker, older patient with multiple co-morbidities has increased. In this study, we show that a set of recipient factors (recipient age >60 years, ventilator status, diabetes, hemodialysis and creatinine >1.5 mg/dl) can help identify patients that may not do well after transplant. Transplanting sicker organs in patients with certain combinations of these

  7. Analyzing Contingency Contracting Purchases for Operation Iraqi Freedom (Unrestricted Version)

    National Research Council Canada - National Science Library

    Baldwin, Laura H; Ausink, John A; Campbell, Nancy F; Drew, John G; Roll, Jr, Charles R

    2008-01-01

    ...) in an effort to determine the size and extent of contractor support, and how plans for and the organization and execution of contingency contracting activities might be improved so that Contingency...

  8. Contingency Analysis Post-Processing With Advanced Computing and Visualization

    Energy Technology Data Exchange (ETDEWEB)

    Chen, Yousu; Glaesemann, Kurt; Fitzhenry, Erin

    2017-07-01

    Contingency analysis is a critical function widely used in energy management systems to assess the impact of power system component failures. Its outputs are important for power system operation for improved situational awareness, power system planning studies, and power market operations. With the increased complexity of power system modeling and simulation caused by increased energy production and demand, the penetration of renewable energy and fast deployment of smart grid devices, and the trend of operating grids closer to their capacity for better efficiency, more and more contingencies must be executed and analyzed quickly in order to ensure grid reliability and accuracy for the power market. Currently, many researchers have proposed different techniques to accelerate the computational speed of contingency analysis, but not much work has been published on how to post-process the large amount of contingency outputs quickly. This paper proposes a parallel post-processing function that can analyze contingency analysis outputs faster and display them in a web-based visualization tool to help power engineers improve their work efficiency by fast information digestion. Case studies using an ESCA-60 bus system and a WECC planning system are presented to demonstrate the functionality of the parallel post-processing technique and the web-based visualization tool.

  9. Vagal tone during infant contingency learning and its disruption.

    Science.gov (United States)

    Sullivan, Margaret Wolan

    2016-04-01

    This study used contingency learning to examine changes in infants' vagal tone during learning and its disruption. The heart rate of 160 five-month-old infants was recorded continuously during the first of two training sessions as they experienced an audiovisual event contingent on their pulling. Maternal reports of infant temperament were also collected. Baseline vagal tone, a measure of parasympathetic regulation of the heart, was related to vagal levels during the infants' contingency learning session, but not to their learner status. Vagal tone levels did not vary significantly over session minutes. Instead, vagal tone levels were a function of both individual differences in learner status and infant soothability. Vagal levels of infants who learned in the initial session were similar regardless of their soothability; however, vagal levels of infants who learned in a subsequent session differed as a function of soothability. Additionally, vagal levels during contingency disruption were significantly higher among infants in this group who were more soothable as opposed to those who were less soothable. The results suggest that contingency learning and disruption is associated with stable vagal tone in the majority of infants, but that individual differences in attention processes and state associated with vagal tone may be most readily observed during the disruption phase. © 2015 Wiley Periodicals, Inc.

  10. Thévenin equivalent based static contingency assessment

    DEFF Research Database (Denmark)

    2015-01-01

    of the determined present state of the power system and determining a first representation of the network based on the determined Thevenin equivalents, determining a modified representation of the network, wherein the modified representation is a representation of the network having at least one contingency......, wherein at least one Thevenin equivalent of at least one voltage controlled node is modified due to the at least one contingency, the modified network representation being determined on the basis of the modified Thevenin equivalents, calculating voltage angles of the modified Thevenin equivalents......, and evaluating the voltage angles to determine whether the network having at least one contingency admit a steady state. Also a method of providing information on a real time static security assessment of a power system is disclosed....

  11. Contingency management for patients with dual disorders in intensive outpatient treatment for addiction.

    Science.gov (United States)

    Kelly, Thomas M; Daley, Dennis C; Douaihy, Antoine B

    2014-01-01

    This quality improvement program evaluation investigated the effectiveness of contingency management for improving retention in treatment and positive outcomes among patients with dual disorders in intensive outpatient treatment for addiction. The effect of contingency management was explored among a group of 160 patients exposed to contingency management (n = 88) and not exposed to contingency management (no contingency management, n = 72) in a six-week partial hospitalization program. Patients referred to the partial hospitalization program for treatment of substance use and comorbid psychiatric disorders received diagnoses from psychiatrists and specialist clinicians according to the Diagnostic and Statistical Manual of the American Psychiatric Association. A unique application of the contingency management "fishbowl" method was used to improve the consistency of attendance at treatment sessions, which patients attended 5 days a week. Days attending treatment and drug-free days were the main outcome variables. Other outcomes of interest were depression, anxiety and psychological stress, coping ability, and intensity of drug cravings. Patients in the contingency management group attended more treatment days compared to patients in the no contingency management group; M = 16.2 days (SD = 10.0) versus M = 9.9 days (SD = 8.5), respectively; t = 4.2, df = 158, p contingency management and self-reported drug-free days. Contingency management is a valuable adjunct for increasing retention in treatment among patients with dual disorders in partial hospitalization treatment. Exposure to contingency management increases retention in treatment, which in turn contributes to increased drug-free days. Interventions for coping with psychological stress and drug cravings should be emphasized in intensive dual diagnosis group therapy.

  12. Appraisal of the Performance of Contingency Cost Provision for ...

    African Journals Online (AJOL)

    The paper appraised performance of contingency allowance in addressing projects' cost risk. To achieve this aim, impact of contingency provision in some selected building projects were evaluated. Data for the study was collected by means of checklist from 40 completed projects' files. Furthermore, 100 questionnaires on ...

  13. Small intestinal transplantation.

    LENUS (Irish Health Repository)

    Quigley, E M

    2012-02-03

    The past few years have witnessed a considerable shift in the clinical status of intestinal transplantation. A great deal of experience has been gained at the most active centers, and results comparable with those reported at a similar stage in the development of other solid-organ graft programs are now being achieved by these highly proficient transplant teams. Rejection and its inevitable associate, sepsis, remain ubiquitous, and new immunosuppressant regimes are urgently needed; some may already be on the near horizon. The recent success of isolated intestinal grafts, together with the mortality and morbidity attendant upon the development of advanced liver disease related to total parenteral nutrition, has prompted the bold proposal that patients at risk for this complication should be identified and should receive isolated small bowel grafts before the onset of end-stage hepatic failure. The very fact that such a suggestion has begun to emerge reflects real progress in this challenging field.

  14. Re: Does Pre-emptive Transplantation versus Post Start of Dialysis Transplantation with a Kidney from a Living Donor Improve Outcomes After Transplantation? A Systematic Literature Review and Position Statement by the Descartes Working Group and ERBP

    Directory of Open Access Journals (Sweden)

    Yarkın Kamil Yakupoğlu

    2017-03-01

    Full Text Available EDITORIAL COMMENT In case of end stage kidney disease, living donation by expanding the donor pool might give a chance for pre-emptive kidney transplantation, which is defined as having a kidney transplant before initiation of chronic dialysis. In this guideline, Descartes Working Group conducted a systematic review of the literature which included observational data of 29 studies, mainly coming from single center or regional registries, performed after 1990 providing data on aspects of pre-emptive living donation. They found that around half of studies showed improvements in patient and graft survival or reductions in the risk of acute rejection. However, relating to pre-transplant glomerular filtration rate no differences were found between the graft and patient survivals. In the light of the data, the group recommends pre-emptive transplantation where possible, with the timing designed to avoid dialysis in patients who have kidney disease that is indefinitely irreversible and clearly progressive. There is also a selection bias. The characteristics of population who receive a pre-emptive kidney transplantation is very different from those receiving a transplant on the waiting list in the mentioned studies, which is well recognized by the authors.

  15. Contingency in the Cosmos and the Contingency of the Cosmos : Two Theological Approaches

    NARCIS (Netherlands)

    Drees, W.B.

    Contingency in reality may be epistemic, due to incomplete knowledge or the intersection of unrelated causal trajectories. In quantum physics, it appears to be ontological. More fundamental and interesting is the limit-question ‘why is there something rather than nothing,’ pointing out the

  16. Contingency bias in probability judgement may arise from ambiguity regarding additional causes.

    Science.gov (United States)

    Mitchell, Chris J; Griffiths, Oren; More, Pranjal; Lovibond, Peter F

    2013-09-01

    In laboratory contingency learning tasks, people usually give accurate estimates of the degree of contingency between a cue and an outcome. However, if they are asked to estimate the probability of the outcome in the presence of the cue, they tend to be biased by the probability of the outcome in the absence of the cue. This bias is often attributed to an automatic contingency detection mechanism, which is said to act via an excitatory associative link to activate the outcome representation at the time of testing. We conducted 3 experiments to test alternative accounts of contingency bias. Participants were exposed to the same outcome probability in the presence of the cue, but different outcome probabilities in the absence of the cue. Phrasing the test question in terms of frequency rather than probability and clarifying the test instructions reduced but did not eliminate contingency bias. However, removal of ambiguity regarding the presence of additional causes during the test phase did eliminate contingency bias. We conclude that contingency bias may be due to ambiguity in the test question, and therefore it does not require postulation of a separate associative link-based mechanism.

  17. Changing Attitudes Toward Influenza Vaccination in U.S. Kidney Transplant Programs Over the Past Decade

    Science.gov (United States)

    Kadambi, Pradeep V.; Harland, Robert C.; Thistlethwaite, J. Richard; West, Bradford L.; Udani, Suneel; Poduval, Rajiv; Josephson, Michelle A.

    2010-01-01

    Background and objectives: Influenza infection in transplant recipients is often associated with significant morbidity. Surveys were conducted in 1999 and 2009 to find out if the influenza vaccination practices in the U.S. transplant programs had changed over the past 10 years. Design, setting, participants, & measurements: In 1999, a survey of the 217 United Network for Organ Sharing-certified kidney and kidney-pancreas transplant centers in the U.S. was conducted regarding their influenza vaccination practice patterns. A decade later, a second similar survey of 239 transplant programs was carried out. Results: The 2009 respondents, compared with 1999, were more likely to recommend vaccination for kidney (94.5% versus 84.4%, P = 0.02) and kidney-pancreas recipients (76.8% versus 48.5%, P < 0.001), family members of transplant recipients (52.5% versus 21.0%, P < 0.001), and medical staff caring for transplant patients (79.6% versus 40.7%, P < 0.001). Physicians and other members of the transplant team were more likely to have been vaccinated in 2009 compared with 1999 (84.2% versus 62.3% of physicians, P < 0.001 and 91.2% versus 50.3% of nonphysicians, P < 0.001). Conclusions: Our study suggests a greater adoption of the Centers for Disease Control and Prevention influenza vaccination guidelines by U.S. transplant programs in vaccinating solid-organ transplant recipients, close family contacts, and healthcare workers. PMID:20595695

  18. Hypersensitivity to Contingent Behavior in Paranoia: A New Virtual Reality Paradigm.

    Science.gov (United States)

    Fornells-Ambrojo, Miriam; Elenbaas, Maaike; Barker, Chris; Swapp, David; Navarro, Xavier; Rovira, Aitor; Sanahuja, Josep Maria Tomàs; Slater, Mel

    2016-02-01

    Contingency in interpersonal relationships is associated with the development of secure attachment and trust, whereas paranoia arises from the overattribution of negative intentions. We used a new virtual reality paradigm to experimentally investigate the impact of contingent behavior on trust along the paranoia continuum. Sixty-one healthy participants were randomly allocated to have a social interaction with a pleasant virtual human (avatar) programmed to be highly responsive or not (high/low contingency). Perceived trustworthiness and trusting behavior were assessed alongside control variables attachment and anxiety. Higher paranoia and dismissive attachment were associated with larger interpersonal distances. Unexpectedly, extremely paranoid individuals experienced the highly contingent avatar as more trustworthy than their low contingency counterpart. Higher dismissive attachment was also associated with more subjective trust in both conditions. Extreme paranoia is associated with hypersensitivity to noncontingent behavior, which might explain experiences of mistrust when others are not highly responsive in everyday social situations.

  19. A kidney transplantation model in a low-resource country: an experience from Pakistan.

    Science.gov (United States)

    Rizvi, Syed Adibul Hasan; Naqvi, Syed Ali Anwar; Zafar, Mirza Naqi; Akhtar, Syed Fazal

    2013-05-01

    Pakistan is a low-resource country with a population of 185 million where expenditure on health is 1.3% of the gross national product. The estimated incidence of end-stage renal disease (ESRD) is 100 per million of the population. The paucity and high costs of renal replacement therapy render more than 90% of the ESRD population disenfranchised from replacement therapy. Our center, which is a government sector organization, established as an integrated dialysis and living related renal transplant program in the 1980s, where all services were provided free of cost to all patients with life-long follow-up care including medications. The model was based on a concept of community/government partnership where the contributions to funds vary between 40% and 60% for each partner. The model has been self sustaining for 25 years, with an annual budget of $28 million in 2010. Presently, over 600 patients are dialyzed each day and each week, 7-10 patients have received live related transplants. The overall 1- and 5-year graft survival rate of 3150 transplants is 92% and 85%, respectively. Free dialysis and transplantation established our institute as a focus of transplantation in the country. This model therefore allowed the institute to have a vital role in the campaign against transplant tourism and in the promulgation of the transplant law. It shows that in low-resource countries, specialized centers in the government sector can, with community support, provide high-quality ESRD care to the disenfranchised population.

  20. Intercity deceased donor renal transplantation: A single-center experience from a developing country

    Directory of Open Access Journals (Sweden)

    T R Mehta

    2013-01-01

    Full Text Available In a developing country such as India, deceased donor renal transplantation (DDRTx accounts for only about 1% of all renal transplants (RTx. Our institute initiated an intercity DDRTx in the year 2006, which significantly increased the number of RTx. We retrieved 74 kidneys from 37 deceased donors from various cities of Gujarat from January 2006 to December 2009. We transplanted the allografts in 66 recipients and a retrospective analysis of the donor profile and management and recipient outcome was performed. The mean age of the donors was 43.3 ± 18.8 years. The causes of death included road traffic accident in 51.35% of the donors and cerebrovascular stroke in 48.65% of the donors; 83.78% of the donors required ionotropes for hemodynamic stability in addition to vigorous intravenous fluid replacement. The average urine output of the donors was 350 ± 150 mL. The organs were perfused and stored in HTK solution. The mean cold ischemia time (CIT was 9.12 ± 5.25 h. The mean anastomosis time in the recipient was 30.8 ± 8.7 min. 57.6% of the recipients established urine output on the operating table and 42.4% developed delayed graft function. At the end of 1 month after transplantation, the mean serum creatinine was comparable to the Ahmadabad city DDRTx, although the CIT was significantly longer in the intercity patients. Intercity organ harvesting is a viable option to increase the donor pool. Distance may not be an impediment, and good recipient outcome is possible in spite of prolonged CIT in case of proper harvesting and preservation.

  1. Financial considerations insurance and coverage issues in intestinal transplantation.

    Science.gov (United States)

    Chaney, Michael

    2004-12-01

    To increase healthcare workers' knowledge of reimbursement concerns. Chronological survey of transplants reimbursed at the University of Nebraska Medical Center from December 1997 to October 2003, which include accounts of 30 patients who received intestine transplants. Gross billed hospital charges for the past 30 transplantations ranged from dollars 112094 to dollars 667597. Length of stay ranged from 18 to 119 days. Charges include organ procurement fees. All 30 intestine transplants were reimbursed by third-party healthcare coverage; combination of coverage; and/or patient and family payments, which resulted in adherence to financial guidelines prearranged by the hospital. Financial guidelines are usually cost plus a percentage. Thirteen transplantations occurred after April 2001, when Medicare made a national coverage decision to reimburse this form of transplantation. Since then, obtaining surgical authorization and reimbursement is easier. Most insurance companies and state public health agencies accept intestinal transplantations as a form of treatment. Researching transplant coverage before evaluation is essential to be compensated adequately. Financial guidelines will secure the fiscal success of the program. Educating patients to insurance and entitlements may reduce the out-of-pocket cost to patients. Transplant financial coordinators coordinate these efforts for the facility. The best coverage option for the patient and transplant programs is a combination of commercial healthcare coverage, secondary entitlement program, and fund-raising. With length of stay ranging up to 119 days and a lifetime of posttransplant outpatient follow-up care, it is beneficial for the facility to also have a fundraising program to assist patients.

  2. Liver transplant

    Science.gov (United States)

    Hepatic transplant; Transplant - liver; Orthotopic liver transplant; Liver failure - liver transplant; Cirrhosis - liver transplant ... The donated liver may be from: A donor who has recently died and has not had liver injury. This type of ...

  3. Hair Transplants

    Science.gov (United States)

    ... Search Skin Experts Skin Treatments Hair Transplants Share » HAIR TRANSPLANTS Before (left) and after (right) - front of ... transplant. Photo courtesy of N. Sadick What are hair transplants? In punch transplanting, a plug containing hair ...

  4. Reducing contingent self-worth: a defensive response to self-threats.

    Science.gov (United States)

    Buckingham, Justin; Lam, Tiffany A; Andrade, Fernanda C; Boring, Brandon L; Emery, Danielle

    2018-04-10

    Previous research shows that people with high self-esteem cope with threats to the self by reducing the extent to which their self-worth is contingent on the threatened domain (Buckingham, Weber, & Sypher, 2012). The present studies tested the hypothesis that this is a defensive process. In support of this hypothesis, Study 1 (N = 160), showed that self-affirmation attenuates the tendency for people with high self-esteem to reduce their contingencies of self-worth following self-threat. Furthermore, Study 2 (N = 286), showed that this tendency was more prevalent among people with defensive self-esteem than among those with secure self-esteem. The present studies imply that reducing contingent self-worth after self-threat is a defensive process. We discuss implications for theories of contingent self-worth.

  5. Compensating the transplant professional: time for a model change.

    Science.gov (United States)

    Abouljoud, M; Whitehouse, S; Langnas, A; Brown, K

    2015-03-01

    Compensation models for physicians are currently based primarily on the work relative value unit (wRVU) that rewards productivity by work volume. The value-based payment structure soon to be ushered in by the Centers for Medicare and Medicaid Services rewards clinical quality and outcomes. This has prompted changes in wRVU value for certain services that will result in reduced payment for specialty procedures such as transplantation. To maintain a stable and competent workforce and achieve alignment between clinical activity, growth imperatives, and cost effectiveness, compensation of transplant physicians must evolve toward a matrix of measures beyond the procedure-based activity. This personal viewpoint proposes a redesign of transplant physician compensation plans to include the "virtual RVU" to recognize and reward meaningful clinical integration defined as hospital-physician commitment to specified and measurable metrics for current non-RVU-producing activities. Transplantation has been a leader in public outcomes reporting and is well suited to meet the challenges ahead that can only be overcome with a tight collaboration and alignment between surgeons, other physicians, support staff, and their respective institution and leadership. © Copyright 2015 The American Society of Transplantation and the American Society of Transplant Surgeons.

  6. Immune Desensitization Allows Pediatric Blood Group Incompatible Kidney Transplantation.

    Science.gov (United States)

    Stojanovic, Jelena; Adamusiak, Anna; Kessaris, Nicos; Chandak, Pankaj; Ahmed, Zubir; Sebire, Neil J; Walsh, Grainne; Jones, Helen E; Marks, Stephen D; Mamode, Nizam

    2017-06-01

    Blood group incompatible transplantation (ABOi) in children is rare as pretransplant conditioning remains challenging and concerns persist about the potential increased risk of rejection. We describe the results of 11 ABOi pediatric renal transplant recipients in the 2 largest centers in the United Kingdom, sharing the same tailored desensitization protocol. Patients with pretransplant titers of 1 or more in 8 received rituximab 1 month before transplant; tacrolimus and mycophenolate mofetil were started 1 week before surgery. Antibody removal was performed to reduce titers to 1 or less in 8 on the day of the operation. No routine postoperative antibody removal was performed. Death-censored graft survival at last follow-up was 100% in the ABOi and 98% in 50 compatible pediatric transplants. One patient developed grade 2A rejection successfully treated with antithymocyte globulin. Another patient had a titer rise of 2 dilutions treated with 1 immunoadsorption session. There was no histological evidence of rejection in the other 9 patients. One patient developed cytomegalovirus and BK and 2 others EBV and BK viremia. Tailored desensitization in pediatric blood group incompatible kidney transplantation results in excellent outcomes with graft survival and rejection rates comparable with compatible transplants.

  7. Effects of contingent self-esteem on depressive symptoms and suicidal behavior.

    Science.gov (United States)

    Lakey, Chad E; Hirsch, Jameson K; Nelson, Lyndsay A; Nsamenang, Sheri A

    2014-01-01

    Contingent self-esteem, or self-worth hinged upon successfully meeting standards or attaining goals, requires continual maintenance and validation. Despite the inherent instability that accompanies contingent self-esteem, relatively little is known about how it relates to markers of mental health. A sample of 371 college students completed measures of self-esteem, contingent self-esteem, suicidal behaviors, and depression. Individuals with fragile low self-esteem, described as highly contingent, reported greater depressive symptoms and suicidal behavior. Among those with secure high self-esteem, or high yet noncontingent, depression and suicide risk were markedly lower. Therapeutically promoting positive but noncontingent self-worth may reduce poor mental health outcomes.

  8. Step 1: Human System Integration (HSI) FY05 Pilot-Technology Interface Requirements for Contingency Management

    Science.gov (United States)

    2005-01-01

    This document involves definition of technology interface requirements for Contingency Management. This was performed through a review of Contingency Management-related, HSI requirements documents, standards, and recommended practices. Technology concepts in use by the Contingency Management Work Package were considered. Beginning with HSI high-level functional requirements for Contingency Management, and Contingency Management technology elements, HSI requirements for the interface to the pilot were identified. Results of the analysis describe (1) the information required by the pilot to have knowledge of system failures and associated contingency procedures, and (2) the control capability needed by the pilot to obtain system status and procedure information. Fundamentally, these requirements provide the candidate Contingency Management technology concepts with the necessary human-related elements to make them compatible with human capabilities and limitations. The results of the analysis describe how Contingency Management operations and functions should interface with the pilot to provide the necessary Contingency Management functionality to the UA-pilot system. Requirements and guidelines for Contingency Management are partitioned into four categories: (1) Health and Status and (2) Contingency Management. Each requirement is stated and is supported with a rationale and associated reference(s).

  9. Effect of Immigration Status on Outcomes in Pediatric Kidney Transplant Recipients.

    Science.gov (United States)

    McEnhill, M E; Brennan, J L; Winnicki, E; Lee, M M; Tavakol, M; Posselt, A M; Stock, P G; Portale, A A

    2016-06-01

    Kidney transplantation is the optimal treatment for children with end-stage renal disease. For children with undocumented immigration status, access to kidney transplantation is limited, and data on transplant outcomes in this population are scarce. The goal of the present retrospective single-center study was to compare outcomes after kidney transplantation in undocumented children with those of US citizen children. Undocumented residency status was identified in 48 (17%) of 289 children who received a kidney transplant between 1998 and 2010. In undocumented recipients, graft survival at 1 and 5 years posttransplantation was similar, and mean estimated glomerular filtration rate at 1 year was higher than that in recipients who were citizens. The risk of allograft failure was lower in undocumented recipients relative to that in citizens at 5 years posttransplantation, after adjustment for patient age, donor age, donor type, and HLA mismatch (p immigration policies for the undocumented that facilitate access to work-permits and employment-related insurance for this disadvantaged group. © Copyright 2015 The American Society of Transplantation and the American Society of Transplant Surgeons.

  10. Review of Natural History, Benefits and Risk Factors Pediatric Liver Transplantation

    Directory of Open Access Journals (Sweden)

    Manoochehr Karjoo

    2016-03-01

    Full Text Available Liver or hepatic transplantation (LT is the replacement of a diseased liver with part or whole healthy liver from another person (allograft. Human liver transplants were first performed by Thomas Starzl in the United States and Roy Calne in Cambridge, England in 1963 and 1967, respectively. Liver transplantation is a viable treatment option for end-stage liver disease and acute liver failure. Pediatric patients account for about 12.5% of liver transplant recipients. The most commonly used technique is orthotopic transplantation, in which the native liver is removed and replaced by the donor organ in the same anatomic location as the original liver. Cirrhosis, or liver injury, is a common reason why adults need liver transplants and children with bile duct disease issues are often the candidates. Survival statistics depend greatly on the age of donor, age of recipient, skill of the transplant center, compliance of the recipient, whether the organ came from a living or cadaveric donor and overall health of the recipient. Survival rates improve almost yearly, due to improved techniques and medications.

  11. Contingency Cost estimation for Research reactor Decommissioning

    International Nuclear Information System (INIS)

    Jin, Hyung Gon; Hong, Yun Jeong

    2016-01-01

    There are many types of cost items in decommissioning cost estimation, however, contingencies are for unforeseen elements of cost within the defined project scope. Regulatory body wants to reasonable quantification for this issue. Many countries have adopted the breakdown of activity dependent and period-dependent costs to structure their estimates. Period-dependent costs could be broken down into defined time frames to reduce overall uncertainties. Several countries apply this notion by having different contingency factors for different phases of the project. This study is a compilation of contingency cost of research reactor and for each country. Simulation techniques using TRIM, MATLAB, and PSpice can be useful tools for designing detector channels. Thus far TRIM, MATLAB and PSpice have been used to calculate the detector current output pulse for SiC semiconductor detectors and to model the pulses that propagate through potential detector channels. This model is useful for optimizing the detector and the resolution for application to neutron monitoring in the Generation IV power reactors

  12. Contingency Cost estimation for Research reactor Decommissioning

    Energy Technology Data Exchange (ETDEWEB)

    Jin, Hyung Gon; Hong, Yun Jeong [KAERI, Daejeon (Korea, Republic of)

    2016-05-15

    There are many types of cost items in decommissioning cost estimation, however, contingencies are for unforeseen elements of cost within the defined project scope. Regulatory body wants to reasonable quantification for this issue. Many countries have adopted the breakdown of activity dependent and period-dependent costs to structure their estimates. Period-dependent costs could be broken down into defined time frames to reduce overall uncertainties. Several countries apply this notion by having different contingency factors for different phases of the project. This study is a compilation of contingency cost of research reactor and for each country. Simulation techniques using TRIM, MATLAB, and PSpice can be useful tools for designing detector channels. Thus far TRIM, MATLAB and PSpice have been used to calculate the detector current output pulse for SiC semiconductor detectors and to model the pulses that propagate through potential detector channels. This model is useful for optimizing the detector and the resolution for application to neutron monitoring in the Generation IV power reactors.

  13. Financial Management: DoD Process for Reporting Contingent Legal Liabilities

    National Research Council Canada - National Science Library

    Granetto, Paul J; Marsh, Patricia A; Peek, Marvin L; Brittingham, Scott S; Baidridge, Denise E; Egu, Charles O; Schenck, Kristy M; Adams, Carl L; Reiser, Cheri L

    2006-01-01

    ... contingent liabilities should read this report. It identifies areas where DoD and its Components have not fully complied with Federal financial accounting standards and are not consistent in computing and disclosing contingent legal liabilities...

  14. Dual Kidney Transplantation: Is It Worth It?

    Science.gov (United States)

    Snanoudj, Renaud; Timsit, Marc-Olivier; Rabant, Marion; Tinel, Claire; Lazareth, Hélène; Lamhaut, Lionel; Martinez, Frank; Legendre, Christophe

    2017-03-01

    Use of expanded criteria donor (ECD) kidneys, which are associated with a reduced graft survival rate, has become widely adopted in elderly recipients in an old-to-old allocation system. However, the results are frequently unsatisfactory, and a high proportion of these ECD kidneys are discarded. Dual kidney transplantation (DKT) is an underused way to expand the pool of ECD kidneys and to rapidly transplant elderly patients with satisfactory results because of the transplantation of double the nephronic mass. In this overview, we summarize the results of the main studies on DKT. DKT suffers from a prejudice of heaviness and is considered to be useless by transplant centers that do not perform it. The literature is often biased by the heterogeneity of the criteria leading to a DKT and the common refusal of kidneys that are judged too marginal. In fact, we show that when strictly allocated according to reliable clinical or histological scores, dual and single ECD transplantations yield similar results in terms of patient and graft survival rates despite significant differences in donors' characteristics. DKTs are not associated with a higher proportion of surgical complications, except in some studies showing thrombosis of 1 of the 2 grafts. The benefits of dual transplantation are particularly evident for kidneys coming from most ECDs. There is still a need for more studies to find the best allocation criteria that would permit transplantation to the highest number of patients with similar outcomes in recipients of single and dual ECD kidneys.

  15. 10 CFR 72.186 - Change to physical security and safeguards contingency plans.

    Science.gov (United States)

    2010-01-01

    ... 10 Energy 2 2010-01-01 2010-01-01 false Change to physical security and safeguards contingency... contingency plans. (a) The licensee shall make no change that would decrease the safeguards effectiveness of... licensee safeguards contingency plan without prior approval of the Commission. A licensee desiring to make...

  16. Application of the IPEBS method to dynamic contingency analysis

    Energy Technology Data Exchange (ETDEWEB)

    Martins, A C.B. [FURNAS, Rio de Janeiro, RJ (Brazil); Pedroso, A S [Centro de Pesquisas de Energia Eletrica (CEPEL), Rio de Janeiro, RJ (Brazil)

    1994-12-31

    Dynamic contingency analysis is certainly a demanding task in the context of dynamic performance evaluation. This paper presents the results of a test for checking the contingency screening capability of the IPEBS method. A brazilian 1100-bus, 112-gen system was used in the test; the ranking of the contingencies based on critical clearing times obtained with IPEBS, was compared with the ranking derived from detailed time-domain simulation. The results of this comparison encourages us to recommended the use of the method in industry applications, in a complementary basis to the current method of time domain simulation. (author) 5 refs., 1 fig., 2 tabs.

  17. Quality of life in recipients before and after liver transplantation in Turkey.

    Science.gov (United States)

    Ordin, Yaprak S; Dicle, Aklime; Wellard, Sally

    2011-09-01

    Liver transplantation has become the treatment of choice for patients with end-stage liver disease. Most studies show a positive effect on quality of life after liver transplantation, but most studies are based on data from Western countries and little is known about quality of life in liver transplant recipients in Turkey or other developing countries. To investigate liver transplant recipients' quality of life and factors affecting it, before and 3 months after transplantation in western Turkey. Descriptive and comparative, with data collected prospectively. Two medical centers in Western Turkey. Sixty-five adult recipients of a liver transplant between May 15 and December 31,2007. Quality of life was measured by using the Nottingham Health Profile Turkish version, and sociodemographic and clinical data were collected from patients' records. Scores on all subscales of the Nottingham Health Profile differed significantly from before to after liver transplantation. The differences between the mean scores for quality of life before and after transplantation varied significantly with the patients' sex and disease severity.

  18. Italy-Greece cooperation for transplantation of medically urgent Greek patients: is it an effective, efficient model?

    Science.gov (United States)

    Peritore, D; Pretagostini, R; Di Ciaccio, P; Fiaschetti, P; Gabbrielli, F; Oliveti, A; Stabile, D; Ricci, A; Vaia, F; Nanni Costa, A

    2012-09-01

    In 2005 the Italian National Transplant Centre (CNT) signed a cooperation agreement with the Hellenic Transplant Organization (HTO) fostering the transfer and transplantation of urgent Greek liver patients at Italian transplantation centers. So as to not reduce access to transplantation for Italian patients, the agreement provided compensation for organs allocated to Greek transplant recipients. The aim of this study was to analyze the flow of patients from Greece to Italy and the number of received livers to consider the possibility to extend this kind of agreement to other countries, so that this should not penalize Italian recipients. The agreement provides the possibility for Greek patients affected by acute disease to be transferred to Italian transplantation centers participating in the agreement. Until 2008 livers transplanted into Greek recipients were returned through a preferential offer of surplus Greek organs, whereas from 2009 an obligation of payback was introduced. During the reviewed period requests for transfer, transferred patients, and number of patients who later underwent transplantation in Italy were 56, 26, and 23, respectively. Livers offered by the Greek organization that were accepted, transferred, and transplanted in Italy have been 82, 50, and 44, respectively. According to our analysis, the cooperation has had as positive impact for both Greece, which has difficulties transplanting urgent recipient because of the low number of donors, and for Italy, which is not penalized by the use of an organ in a Greek recipients, but is also rewarded for helpfulness. Copyright © 2012 Elsevier Inc. All rights reserved.

  19. Living Donor Liver Transplant is not a Transparent Activity in India.

    Science.gov (United States)

    Naidu, Sudeep

    2013-03-01

    Living donor liver transplant has gained rapid popularity in India as a life saving procedure for end stage liver disease. The undoubted benefit for the recipient is clouded by a few unfavorable outcomes in donors which have led to allegations of lack of transparency. These factors are easily remediable with an attitude of self audit and self disclosure by transplant centers, enabling a truly informed consenting procedure.

  20. Zero-contingent entropy of quantum states of a Hydrogen atom

    International Nuclear Information System (INIS)

    Charvot, R.; Majernik, V.

    1996-01-01

    We calculated the zero-contingent entropy for the position of electron in H-atom as a function of its quantum numbers and compared it with the corresponding value of the Shannon entropy. The values of zero-contingent entropy of quantum states of H-atom correlate well with the corresponding values of Shannon's entropy. This points out that, besides the Shannon entropy, the zero-contingent entropy represents an appropriate, and mathematically rather simple, measure of the spreading out of the wave functions in H-atom. (authors)

  1. A Prospective Study of Depression and Weight Change After Kidney Transplant.

    Science.gov (United States)

    Stanfill, Ansley; Hathaway, Donna; Bloodworth, Robin; Cashion, Ann

    2016-03-01

    Kidney transplant recipients have great risk for gaining significant weight (upward of 10 kg) in the first year posttransplant. Clinical depression can occur in response to life situations and is associated with weight gain. To explore the association between demographic characteristics, weight change, and depression posttransplantation. Secondary data analysis on longitudinal data collected for a larger observational study. Demographic characteristics, weight, and Center for Epidemiologic Studies Depression Scale (CES-D) data were obtained at baseline (BL) (time of transplantation), 6, and 12 months posttransplant. The CES-D scores were compared among time points using means, standard deviations, correlations, t tests, and chi-square as well as by multiple regression modeling. Regional transplant center in the mid-south United States. Forty-seven kidney transplant recipients (55% female, 57% African American, mean age 52.5 years). Weight change ranged from -18.1 to +24.8 kg. In all, 62% reported baseline CES-D scores indicative of depression, with lower scores indicating less psychological distress at 6 and 12 months (47% and 49%, respectively). We found no significant differences among CES-D scores at any time point. Regression models found age, race, gender, and weight change to be predictive of CES-D scores at 6 months (P = .04, R (2) = .137). Age was the most influential (P = .008), with older individuals more likely to obtain higher CES-D scores. Since the experience of depression is common at transplant and during the first year, it is important that transplant recipients be evaluated for depression early in the recovery period. © 2016, NATCO.

  2. 40 CFR 267.53 - Who must have copies of the contingency plan?

    Science.gov (United States)

    2010-07-01

    ... contingency plan? 267.53 Section 267.53 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED... UNDER A STANDARDIZED PERMIT Contingency Plan and Emergency Procedures § 267.53 Who must have copies of the contingency plan? (a) You must maintain a copy of the plan with all revisions at the facility; and...

  3. Nuclear energy center site survey: fuel cycle studies

    International Nuclear Information System (INIS)

    1976-05-01

    Background information for the Nuclear Regulatory Commission Nuclear Energy Center Site Survey is presented in the following task areas: economics of integrated vs. dispersed nuclear fuel cycle facilities, plutonium fungibility, fuel cycle industry model, production controls and failure contingencies, environmental impact, waste management, emergency response capability, and feasibility evaluations

  4. Bone Marrow Transplantation for Leukocyte Adhesion Deficiency-I: Case Report

    International Nuclear Information System (INIS)

    Al-wahadneh, A.M.; Haddadin, I.; Hamouri, M.; Omari, K.; Ajellat, F.

    2006-01-01

    Leukocyte Adhesion Deficiency type-I (LAD-I) is a rare autosomal recessive immunodeficiency syndrome leading recurrent bacterial and fungal infections. Bone marrow transplantation offers the only cure. In this report, we describe the course and outcome of bone marrow transplant in a 4-month-old female infant with LAD-I at King Hussein Medical Center, Jordan. A successful matched HLA-I related allogeneic bone marrow transplantation was performed. Engraftment was demonstrated on the 12th day. The patient developed GradeIII grafts versus host disease (GVHD), veno-occlusive disease of the liver and late onset hemorrhagic cystitis. She recovered with appropriate immune reconstitution. (author)

  5. A contingency table approach to nonparametric testing

    CERN Document Server

    Rayner, JCW

    2000-01-01

    Most texts on nonparametric techniques concentrate on location and linear-linear (correlation) tests, with less emphasis on dispersion effects and linear-quadratic tests. Tests for higher moment effects are virtually ignored. Using a fresh approach, A Contingency Table Approach to Nonparametric Testing unifies and extends the popular, standard tests by linking them to tests based on models for data that can be presented in contingency tables.This approach unifies popular nonparametric statistical inference and makes the traditional, most commonly performed nonparametric analyses much more comp

  6. Hypertension in Renal Transplantation: Saudi Arabian Experience

    Directory of Open Access Journals (Sweden)

    Souqiyyeh Muhammad

    1999-01-01

    Full Text Available To evaluate the prevalence, etiologic factors and therapy of hypertension in actively followed up transplant population in Saudi Arabia; we retrospectively reviewed the records of the active renal transplant patients at two large transplant centers in Riyadh and Jeddah in Saudi Arabia. These subjects were transplanted between January 1979 and November 1998. The patients were grouped according to the measurement of blood pressure; group 1 (considered normo-tensive: blood pressure below 140/90 mmHg, group2: blood pressure between 140-159/90-99, group 3: blood pressure 160-179/100-109 group 4: equal to or above 180/110. There were 1115 patients′ records included in the study. The mean duration of transplantation was 66.9 ± 50.1 months. According to the level of measured blood pressure, there were 641 (57.5% patients in the normotensive group (group 1, 404 (36.3% patients in the mildly hypertensive group (group 2 64 (5.7% patients in the moderately severe hypertension group (group 3 and only six (0.5% patients in the severe hypertension group (group 4. The estimated prevalence of hypertension in this study was almost 85%. We found no significant difference in the prevalence of hypertension in terms of gender, year of transplantation, duration of transplantation, type of donor, number of previous transplants, diagnosis of renal artery stenosis, etiology of kidney disease, diagnosis of diabetes after transplantation, diagnosis of cerebrovascular accidents, or mean dose of prednisolone and cyclosporine. There was a statistically significant association between increased level of blood pressure and old age (above 50 years, original disease associated with hypertension, history of hypertension on dialysis, acute rejection (once or more, presence of protienuria (more than 0.3 mg/day, abnormality of ECG, or serum creatinine above 300 µmol/L. We conclude that hypertension is highly prevalent in the renal transplant population in Saudi Arabia. Risk

  7. [Intestinal transplant: in what phase are we?].

    Science.gov (United States)

    Andrés Moreno, A M; Ramos, E; Hernández, F; Encinas, J L; Leal, N; Gámez, M L; Martínez, L; Sarriá, J; Molina, M; Martínez-Ojinaga, E; Murcia, J; Frauca, E; Delgado, M; Prieto, G; López Santamaría, M; Tovar, J A

    2010-07-01

    To analyze the evolution of Small Bowel Transplantation program since the beginning of the program. [corrected] All children who underwent intestinal transplantation between 1997 and 2009 were retrospectively reviewed: epidemiological data, status before transplant, surgical technique, immunosupression, results, survival and long.term quality of life were analysed. Fifty-two intestinal transplants were performed in 46 children (20 isolated bowel, 20 combined liver and intestine, and 12 multivisceral); median age was 32m (range 7m-19a); weight 12,3 kg (range 3,9-60); 31 had short gut syndrome, 8 dismotility, 5 intractable diarrhea, and two were miscellaneous. Intestinal adaptation was initially attempted in 26 patients, without success, 20 were directly listed for transplant. The modality of transplant was modified in 17 while listed. Baseline immunosupression consisted of tacrolimus and steroids, although 5 required conversion to Sirolimus later. Six died during the first month, due to sepsis/multiorganic failure (poor status at transplant); 13 died during the long-term follow-up. Acute rejection was seen in 20, chronic rejection in 3, PTLD in 8 (6 died) and GVHD in 5 patients (3 died). Overall survival after 5 years of follow-up is 65,2 % (51,7% for the graft). From 2006 to 2008, overall patient/graft survival at 6 m, 1 and 3 years after transplant is 88,7/84,1, 81,2/81,2 and 81,2/71,1%, respectively. After a median follw-up of 39 +/- 29 months, 27 patients are alive (59%), off TPN, (70% had their ostomy taken down), go to school, are scarcely hospitalized and enjoy a good quality of life. Intestinal transplantation has consolided itself as a good choice for irreversible intestinal failure, being feasible to achieve a normal life. Although overall survival diminishes over time, the center experience has improved the results. These patients need a very close follow-up, once transplant is over, in order to get an early diagnose of immunological complications.

  8. Contingency Contractor Optimization Phase 3 Sustainment Database Design Document - Contingency Contractor Optimization Tool - Prototype

    Energy Technology Data Exchange (ETDEWEB)

    Frazier, Christopher Rawls; Durfee, Justin David; Bandlow, Alisa; Gearhart, Jared Lee; Jones, Katherine A

    2016-05-01

    The Contingency Contractor Optimization Tool – Prototype (CCOT-P) database is used to store input and output data for the linear program model described in [1]. The database allows queries to retrieve this data and updating and inserting new input data.

  9. Immediate re-transplantation following early kidney transplant thrombosis.

    LENUS (Irish Health Repository)

    Phelan, Paul J

    2012-02-01

    Allograft thrombosis is a devastating early complication of renal transplantation that ultimately leads to allograft loss. We report here on our experience of nine cases of immediate re-transplantation following early kidney transplant thrombosis at a single centre between January 1990 and June 2009. The mean age was 42.9 years at time of transplant. For seven patients, the allograft thrombosis was their first kidney transplant and seven of the nine cases had a deceased donor transplant. The initial transplants functioned for a mean of 1.67 days and the patients received a second allograft at a mean of 3.1 days after graft failure. All of the re-transplants worked immediately. Four allografts failed after a mean of 52.5 months (2-155 months). Two of these died with a functioning allograft, one failed owing to chronic allograft nephropathy and one owing to persistent acute cellular rejection. The remaining five patients still have a functioning allograft after a mean of 101.8 months (7-187 months). One year allograft and patient survival after re-transplantation were 87.5% and 100% respectively (after 5 years, both were 57%). Immediate re-transplantation following early kidney transplant thrombosis can be a success. It may be considered in selected cases after allograft thrombosis.

  10. Patient-Reported Barriers to the Prekidney Transplant Evaluation in an At-Risk Population in the United States.

    Science.gov (United States)

    Lockwood, Mark B; Saunders, Milda R; Nass, Rachel; McGivern, Claire L; Cunningham, Patrick N; Chon, W James; Josephson, Michelle A; Becker, Yolanda T; Lee, Christopher S

    2017-06-01

    Despite our knowledge of barriers to the early stages of the transplant process, we have limited insight into patient-reported barriers to the prekidney transplant medical evaluation in populations largely at-risk for evaluation failure. One-hundred consecutive adults were enrolled at an urban, Midwestern transplant center. Demographic, clinical, and quality of life data were collected prior to patients visit with a transplant surgeon/nephrologist (evaluation begins). Patient-reported barriers to evaluation completion were collected using the Subjective Barriers Questionnaire 90-days after the initial medical evaluation appointment (evaluation ends), our center targeted goal for transplant work-up completion. At 90 days, 40% of participants had not completed the transplant evaluation. Five barrier categories were created from the 85 responses to the Subjective Barriers Questionnaire. Patient-reported barriers included poor communication, physical health, socioeconomics, psychosocial influences, and access to care. In addition, determinants for successful evaluation completion included being of white race, higher income, free of dialysis, a lower comorbid burden, and reporting higher scores on the Kidney Disease Quality of Life subscale role-emotional. Poor communication between patients and providers, and among providers, was the most prominent patient-reported barrier identified. Barriers were more prominent in marginalized groups such as ethnic minorities and people with low income. Understanding the prevalence of patient-reported barriers may aid in the development of patient-centered interventions to improve completion rates.

  11. Clinical management and outcomes of patients with Hermansky-Pudlak syndrome pulmonary fibrosis evaluated for lung transplantation.

    Science.gov (United States)

    El-Chemaly, Souheil; O'Brien, Kevin J; Nathan, Steven D; Weinhouse, Gerald L; Goldberg, Hilary J; Connors, Jean M; Cui, Ye; Astor, Todd L; Camp, Philip C; Rosas, Ivan O; Lemma, Merte; Speransky, Vladislav; Merideth, Melissa A; Gahl, William A; Gochuico, Bernadette R

    2018-01-01

    Pulmonary fibrosis is a progressive, fatal manifestation of Hermansky-Pudlak syndrome (HPS). Some patients with advanced HPS pulmonary fibrosis undergo lung transplantation despite their disease-associated bleeding tendency; others die while awaiting donor organs. The objective of this study is to determine the clinical management and outcomes of a cohort with advanced HPS pulmonary fibrosis who were evaluated for lung transplantation. Six patients with HPS-1 pulmonary fibrosis were evaluated at the National Institutes of Health Clinical Center and one of two regional lung transplant centers. Their median age was 41.5 years pre-transplant. Three of six patients died without receiving a lung transplant. One of these was referred with end-stage pulmonary fibrosis and died before a donor organ became available, and donor organs were not identified for two other patients sensitized from prior blood product transfusions. Three of six patients received bilateral lung transplants; they did not have a history of excessive bleeding. One patient received peri-operative desmopressin, one was transfused with intra-operative platelets, and one received extracorporeal membrane oxygenation and intra-operative prothrombin complex concentrate, platelet transfusion, and desmopressin. One transplant recipient experienced acute rejection that responded to pulsed steroids. No evidence of chronic lung allograft dysfunction or recurrence of HPS pulmonary fibrosis was detected up to 6 years post-transplant in these three lung transplant recipients. In conclusion, lung transplantation and extracorporeal membrane oxygenation are viable options for patients with HPS pulmonary fibrosis. Alloimmunization in HPS patients is an important and potentially preventable barrier to lung transplantation; interventions to limit alloimmunization should be implemented in HPS patients at risk of pulmonary fibrosis to optimize their candidacy for future lung transplants.

  12. Contingent valuation and incentives

    Science.gov (United States)

    Patricia A. Champ; Nicholas E. Flores; Thomas C. Brown; James Chivers

    2002-01-01

    We empirically investigate the effect of the payment mechanism on contingent values by asking a willingness-to-pay question with one of three different payment mechanisms: individual contribution, contribution with provision point, and referendum. We find statistical evidence of more affirmative responses in the referendum treatment relative to the individual...

  13. Using contingency management procedures to reduce at-risk drinking in heavy drinkers.

    Science.gov (United States)

    Dougherty, Donald M; Lake, Sarah L; Hill-Kapturczak, Nathalie; Liang, Yuanyuan; Karns, Tara E; Mullen, Jillian; Roache, John D

    2015-04-01

    Treatments for alcohol use disorders typically have been abstinence based, but harm reduction approaches that encourage drinkers to alter their drinking behavior to reduce the probability of alcohol-related consequences, have gained in popularity. This study used a contingency management procedure to determine its effectiveness in reducing alcohol consumption among heavy drinkers. Eighty-two nontreatment-seeking heavy drinkers (ages 21 to 54, M = 30.20) who did not meet diagnostic criteria for alcohol dependence participated in the study. The study had 3 phases: (i) an Observation phase (4 weeks) where participants drank normally; (ii) a Contingency Management phase (12 weeks) where participants were paid $50 weekly for not exceeding low levels of alcohol consumption as measured by transdermal alcohol concentrations, contingencies were removed. Transdermal alcohol monitors were used to verify meeting contingency requirements; all other analyses were conducted on self-reported alcohol use. On average 42.3% of participants met the contingency criteria and were paid an average of $222 during the Contingency Management phase, with an average $1,998 in total compensation throughout the study. Compared to the Observation phase, the percent of any self-reported drinking days significantly decreased from 59.9 to 40.0% in the Contingency Management and 32.0% in the Follow-up phases. The percent of self-reported heavy drinking days reported also significantly decreased from 42.4% in the Observation phase to 19.7% in the Contingency Management phase, which was accompanied by a significant increase in percent days of self-reported no (from 40.1 to 60.0%) and low-level drinking (from 9.9 to 15.4%). Self-reported reductions in drinking either persisted, or became more pronounced, during the Follow-up phase. Contingency management was associated with a reduction in self-reported episodes of heavy drinking among nontreatment-seeking heavy drinkers. These effects persisted even

  14. Organ trafficking and transplant tourism: a commentary on the global realities.

    Science.gov (United States)

    Budiani-Saberi, D A; Delmonico, F L

    2008-05-01

    The extent of organ sales from commercial living donors (CLDs) or vendors has now become evident. At the Second Global Consultation on Human Transplantation of the World Health Organization's (WHO) in March 2007, it was estimated that organ trafficking accounts for 5-10% of the kidney transplants performed annually throughout the world. Patients with sufficient resources in need of organs may travel from one country to another to purchase a kidney (or liver) mainly from a poor person. Transplant centers in 'destination' countries have been well known to encourage the sale of organs to 'tourist' recipients from the 'client' countries.

  15. Pre- and postnatal transplantation of fetal mesenchymal stem cells in osteogenesis imperfecta: a two-center experience.

    Science.gov (United States)

    Götherström, Cecilia; Westgren, Magnus; Shaw, S W Steven; Aström, Eva; Biswas, Arijit; Byers, Peter H; Mattar, Citra N Z; Graham, Gail E; Taslimi, Jahan; Ewald, Uwe; Fisk, Nicholas M; Yeoh, Allen E J; Lin, Ju-Li; Cheng, Po-Jen; Choolani, Mahesh; Le Blanc, Katarina; Chan, Jerry K Y

    2014-02-01

    Osteogenesis imperfecta (OI) can be recognized prenatally with ultrasound. Transplantation of mesenchymal stem cells (MSCs) has the potential to ameliorate skeletal damage. We report the clinical course of two patients with OI who received prenatal human fetal MSC (hfMSC) transplantation and postnatal boosting with same-donor MSCs. We have previously reported on prenatal transplantation for OI type III. This patient was retransplanted with 2.8 × 10(6) same-donor MSCs per kilogram at 8 years of age, resulting in low-level engraftment in bone and improved linear growth, mobility, and fracture incidence. An infant with an identical mutation who did not receive MSC therapy succumbed at 5 months despite postnatal bisphosphonate therapy. A second fetus with OI type IV was also transplanted with 30 × 10(6) hfMSCs per kilogram at 31 weeks of gestation and did not suffer any new fractures for the remainder of the pregnancy or during infancy. The patient followed her normal growth velocity until 13 months of age, at which time longitudinal length plateaued. A postnatal infusion of 10 × 10(6) MSCs per kilogram from the same donor was performed at 19 months of age, resulting in resumption of her growth trajectory. Neither patient demonstrated alloreactivity toward the donor hfMSCs or manifested any evidence of toxicities after transplantation. Our findings suggest that prenatal transplantation of allogeneic hfMSCs in OI appears safe and is of likely clinical benefit and that retransplantation with same-donor cells is feasible. However, the limited experience to date means that it is not possible to be conclusive and that further studies are required.

  16. Visual perceptual learning by operant conditioning training follows rules of contingency

    Science.gov (United States)

    Kim, Dongho; Seitz, Aaron R; Watanabe, Takeo

    2015-01-01

    Visual perceptual learning (VPL) can occur as a result of a repetitive stimulus-reward pairing in the absence of any task. This suggests that rules that guide Conditioning, such as stimulus-reward contingency (e.g. that stimulus predicts the likelihood of reward), may also guide the formation of VPL. To address this question, we trained subjects with an operant conditioning task in which there were contingencies between the response to one of three orientations and the presence of reward. Results showed that VPL only occurred for positive contingencies, but not for neutral or negative contingencies. These results suggest that the formation of VPL is influenced by similar rules that guide the process of Conditioning. PMID:26028984

  17. Visual perceptual learning by operant conditioning training follows rules of contingency.

    Science.gov (United States)

    Kim, Dongho; Seitz, Aaron R; Watanabe, Takeo

    2015-01-01

    Visual perceptual learning (VPL) can occur as a result of a repetitive stimulus-reward pairing in the absence of any task. This suggests that rules that guide Conditioning, such as stimulus-reward contingency (e.g. that stimulus predicts the likelihood of reward), may also guide the formation of VPL. To address this question, we trained subjects with an operant conditioning task in which there were contingencies between the response to one of three orientations and the presence of reward. Results showed that VPL only occurred for positive contingencies, but not for neutral or negative contingencies. These results suggest that the formation of VPL is influenced by similar rules that guide the process of Conditioning.

  18. [Kidney transplantation: consecutive one thousand transplants at National Institute of Medical Sciences and Nutrition Salvador Zubirán in Mexico City].

    Science.gov (United States)

    Marino-Vazquez, Lluvia Aurora; Sánchez-Ugarte, Regina; Morales-Buenrostro, Luis Eduardo

    2011-09-01

    The National Institute of Medical Sciences and Nutrition Salvador Zubiran (INCMNSZ) is a specialty hospital for adults and a teaching hospital, which performed the first kidney transplant in 1967; in 1971 it began the formal program of renal transplantation. Recently, it was performed the kidney transplant number 1000, so this article presents the information of these thousand kidney transplants, with special emphasis on survival. Retrospective cohort study which included 1000 consecutive transplants performed at the INCMNSZ between 1967 and June 2011. It describes the general characteristics of kidney transplant recipients, transplant-related variables, initial immunosuppression and complications. Descriptive statistics were used. The survival analysis was performed using the Kaplan-Meier method. It shows the patient survival, graft survival censored for death with functional graft and total graft survival (uncensored). Patient survival at 1, 3, 5, 10, 15, and 20 years was 94.9, 89.6, 86.8, 76.9, 66.1, and 62.2%, respectively. Graft survival censored for death with functional graft at 1, 3, 5, 10, 15, and 20 years was 93.1, 87.1, 83.5, 73.9, 62.7, and 52.5% respectively. Risk factors associated with poorer graft survival were younger age of the recipient, transplant during the first period (1967-1983), and a HLA mismatch. Patient and graft survival have improved over time through the use of better immunosuppression and use of induction therapy. Identification of risk factors affecting graft survival, allows each center to set their strategies to improve the patient's outcome.

  19. Quantifying the risk of incompatible kidney transplantation: a multicenter study.

    Science.gov (United States)

    Orandi, B J; Garonzik-Wang, J M; Massie, A B; Zachary, A A; Montgomery, J R; Van Arendonk, K J; Stegall, M D; Jordan, S C; Oberholzer, J; Dunn, T B; Ratner, L E; Kapur, S; Pelletier, R P; Roberts, J P; Melcher, M L; Singh, P; Sudan, D L; Posner, M P; El-Amm, J M; Shapiro, R; Cooper, M; Lipkowitz, G S; Rees, M A; Marsh, C L; Sankari, B R; Gerber, D A; Nelson, P W; Wellen, J; Bozorgzadeh, A; Gaber, A O; Montgomery, R A; Segev, D L

    2014-07-01

    Incompatible live donor kidney transplantation (ILDKT) offers a survival advantage over dialysis to patients with anti-HLA donor-specific antibody (DSA). Program-specific reports (PSRs) fail to account for ILDKT, placing this practice at regulatory risk. We collected DSA data, categorized as positive Luminex, negative flow crossmatch (PLNF) (n = 185), positive flow, negative cytotoxic crossmatch (PFNC) (n = 536) or positive cytotoxic crossmatch (PCC) (n = 304), from 22 centers. We tested associations between DSA, graft loss and mortality after adjusting for PSR model factors, using 9669 compatible patients as a comparison. PLNF patients had similar graft loss; however, PFNC (adjusted hazard ratio [aHR] = 1.64, 95% confidence interval [CI]: 1.15-2.23, p = 0.007) and PCC (aHR = 5.01, 95% CI: 3.71-6.77, p < 0.001) were associated with increased graft loss in the first year. PLNF patients had similar mortality; however, PFNC (aHR = 2.04; 95% CI: 1.28-3.26; p = 0.003) and PCC (aHR = 4.59; 95% CI: 2.98-7.07; p < 0.001) were associated with increased mortality. We simulated Centers for Medicare & Medicaid Services flagging to examine ILDKT's effect on the risk of being flagged. Compared to equal-quality centers performing no ILDKT, centers performing 5%, 10% or 20% PFNC had a 1.19-, 1.33- and 1.73-fold higher odds of being flagged. Centers performing 5%, 10% or 20% PCC had a 2.22-, 4.09- and 10.72-fold higher odds. Failure to account for ILDKT's increased risk places centers providing this life-saving treatment in jeopardy of regulatory intervention. © Copyright 2014 The American Society of Transplantation and the American Society of Transplant Surgeons.

  20. Outcome of liver transplantation for hepatocellular carcinoma -- a single center experience.

    Science.gov (United States)

    Iacob, R; Iacob, S; Gheorghe, L; Gheorghe, C; Hrehoreţ, D; Brașoveanu, V; Croitoru, A; Herlea, V; Popescu, I

    2013-01-01

    Liver transplantation (LT) is a promising treatment for patients with liver cirrhosis associated with hepatocellular carcinoma (HCC). The aim of our study was to evaluate our experience regarding the clinical and pathological staging of HCC in patients who underwent LT, as well as recurrence free and overall survival. From January 2006 to December 2011, 38 patients with diagnosis of HCC, underwent LT in our Center. Demographic, clinical, imaging and pathologic information were recorded. A Cox proportional hazards survival analysis was performed in order to identify significant predictors of tumor recurrence and patient's death after LT. Eighteen patients (47.4%) in our study group were within Milan criteria. The mean follow-up was 22 months and the recurrence rate of HCC after LT was 13.2%. The 1, 3- year recurrence free survival rates were 85%, 74.3% respectively. The 1 and 3-year overall survival rates were 83.5% and 63.6% respectively. No significant predictor for HCC recurrence was identified in our study group by survival analysis, taking into account 13 different variables. As independent predictors of patient'ss death after LT for HCC however, the presence of diabetes mellitus (p=0.001), presence of more than 3 HCC nodules (p=0.03) and tumor recurrence after LT (p=0.03) were identified by multivariate Cox proportional hazards survival analysis. In our cohort HCC recurrence rate after LT was 13.2%. Diabetes mellitus, presence of more than 3 HCC nodules and HCC recurrence were significant predictors of poor overall survival after LT. Celsius.

  1. Cost and clinical outcome of islet transplantation in Norway 2010-2015.

    Science.gov (United States)

    Schive, Simen W; Foss, Aksel; Sahraoui, Afaf; Kloster-Jensen, Kristine; Hafsahl, Geir; Kvalheim, Gunnar; Lundgren, Torbjørn; von Zur-Mühlen, Bengt; Felldin, Marie; Rafael, Ehab; Lempinen, Marko; Korsgren, Olle; Jenssen, Trond G; Mishra, Vinod; Scholz, Hanne

    2017-01-01

    Islet transplantation is a minimally invasive β-cell replacement strategy. Islet transplantation is a reimbursed treatment in Norway. Here, we summarize the cost and clinical outcome of 31 islet transplantations performed at Oslo University Hospital (OUS) from January 2010 to June 2015. Patients were retrospectively divided into three groups. Thirteen patients received either one or two islet transplantation alone (ITA), while five patients received islet transplantation after previous solid organ transplantation. For the group receiving 2 ITA, Kaplan-Meier estimates show an insulin independence of 20% more than 4 years after their last transplantation. An estimated 70% maintain at least partial graft function, defined as fasting C-peptide >0.1 nmol L -1 , and 47% maintain a HbA1c below 6.5% or 2 percent points lower than before ITA. For all groups combined, we estimate that 44% of the patients have a 50% reduction in insulin requirement 4 years after the initial islet transplantation. The average cost for an islet transplantation procedure was 347 297±60 588 NOK, or 35 424±6182 EUR, of which isolation expenses represent 34%. We hereby add to the common pool of growing experience with islet transplantation and also describe the cost of the treatment at our center. © 2016 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  2. Defibrotide for Treatment of Severe Veno-Occlusive Disease in Pediatrics and Adults: An Exploratory Analysis Using Data from the Center for International Blood and Marrow Transplant Research.

    Science.gov (United States)

    Strouse, Christopher; Richardson, Paul; Prentice, Grant; Korman, Sandra; Hume, Robin; Nejadnik, Bijan; Horowitz, Mary M; Saber, Wael

    2016-07-01

    Veno-occlusive disease (VOD) is an early and serious complication of hematopoietic cell transplantation (HCT) that is associated with inferior survival, particularly when it is complicated by multiorgan failure (severe VOD). We evaluated the efficacy of defibrotide in the treatment of severe VOD using observational data from the Center for International Blood and Marrow Transplant Research (CIBMTR). Eight thousand three hundred forty-one patients treated by HCT between 2008 and 2011 were identified from the CIBMTR clinical database; 3.2% met criteria for VOD and 1.2% met criteria for severe VOD. Patients with a diagnosis of VOD as reported to the CIBMTR by their transplanting centers, who had no prior history of cirrhosis, and who had a maximum total bilirubin level > 2.0 mg/dL by day +100 post-HCT were selected for study. Severe VOD was defined as VOD occurring in the setting of renal impairment requiring dialysis or any noninfectious pulmonary abnormality. Patients with severe VOD were divided into 2 groups for analysis: those treated with defibrotide (n = 41) and those not treated with defibrotide (n = 55). Patients in the nondefibrotide group were older, were more likely to be male, were more likely to have a history of previous fungal infection, and had a higher proportion of clinically significant pre-existing disease or organ impairment. Survival rate at day +100 was 39% (95% CI, 24.8% to 54.3%) in patients receiving defibrotide and 30.9% (95% CI, 19.5% to 43.6%) in those not receiving defibrotide. Resolution rate of VOD at day +100 was 51% in the defibrotide group and 29% in the nondefibrotide group (difference, 22.1%; 95% CI, 2.6% to 42%). The results of our study are consistent with previously reported experiences with defibrotide, confirm the poor outcome of this syndrome, and suggest defibrotide is effective in the treatment of severe VOD. Copyright © 2016 American Society for Blood and Marrow Transplantation. Published by Elsevier Inc. All

  3. Immediate re-transplantation following early kidney transplant thrombosis.

    LENUS (Irish Health Repository)

    Phelan, Paul J

    2011-08-01

    Allograft thrombosis is a devastating early complication of renal transplantation that ultimately leads to allograft loss. We report here on our experience of nine cases of immediate re-transplantation following early kidney transplant thrombosis at a single centre between January 1990 and June 2009. The mean age was 42.9 years at time of transplant. For seven patients, the allograft thrombosis was their first kidney transplant and seven of the nine cases had a deceased donor transplant. The initial transplants functioned for a mean of 1.67 days and the patients received a second allograft at a mean of 3.1 days after graft failure. All of the re-transplants worked immediately. Four allografts failed after a mean of 52.5 months (2-155 months). Two of these died with a functioning allograft, one failed owing to chronic allograft nephropathy and one owing to persistent acute cellular rejection. The remaining five patients still have a functioning allograft after a mean of 101.8 months (7-187 months). One year allograft and patient survival after re-transplantation were 87.5% and 100% respectively (after 5 years, both were 57%). Immediate re-transplantation following early kidney transplant thrombosis can be a success. It may be considered in selected cases after allograft thrombosis.

  4. A comparison of analysis methods to estimate contingency strength.

    Science.gov (United States)

    Lloyd, Blair P; Staubitz, Johanna L; Tapp, Jon T

    2018-05-09

    To date, several data analysis methods have been used to estimate contingency strength, yet few studies have compared these methods directly. To compare the relative precision and sensitivity of four analysis methods (i.e., exhaustive event-based, nonexhaustive event-based, concurrent interval, concurrent+lag interval), we applied all methods to a simulated data set in which several response-dependent and response-independent schedules of reinforcement were programmed. We evaluated the degree to which contingency strength estimates produced from each method (a) corresponded with expected values for response-dependent schedules and (b) showed sensitivity to parametric manipulations of response-independent reinforcement. Results indicated both event-based methods produced contingency strength estimates that aligned with expected values for response-dependent schedules, but differed in sensitivity to response-independent reinforcement. The precision of interval-based methods varied by analysis method (concurrent vs. concurrent+lag) and schedule type (continuous vs. partial), and showed similar sensitivities to response-independent reinforcement. Recommendations and considerations for measuring contingencies are identified. © 2018 Society for the Experimental Analysis of Behavior.

  5. APPROPRIATE ALLOCATION OF CONTINGENCY USING RISK ANALYSIS METHODOLOGY

    Directory of Open Access Journals (Sweden)

    Andi Andi

    2004-01-01

    Full Text Available Many cost overruns in the world of construction are attributable to either unforeseen events or foreseen events for which uncertainty was not appropriately accommodated. It is argued that a significant improvement to project management performance may result from greater attention to the process of analyzing project risks. The objective of this paper is to propose a risk analysis methodology for appropriate allocation of contingency in project cost estimation. In the first step, project risks will be identified. Influence diagramming technique is employed to identify and to show how the risks affect the project cost elements and also the relationships among the risks themselves. The second step is to assess the project costs with regards to the risks under consideration. Using a linguistic approach, the degree of uncertainty of identified project risks is assessed and quantified. The problem of dependency between risks is taken into consideration during this analysis. For the final step, as the main purpose of this paper, a method for allocating appropriate contingency is presented. Two types of contingencies, i.e. project contingency and management reserve are proposed to accommodate the risks. An illustrative example is presented at the end to show the application of the methodology.

  6. Bilateral versus single lung transplant for idiopathic pulmonary fibrosis.

    Science.gov (United States)

    Lehmann, Sven; Uhlemann, Madlen; Leontyev, Sergey; Seeburger, Joerg; Garbade, Jens; Merk, Denis R; Bittner, Hartmuth B; Mohr, Friedrich W

    2014-10-01

    It is unknown if uni- or bilateral lung transplant is best for treatment of usual idiopathic pulmonary fibrosis. We reviewed our single-center experience comparing both treatments. Between 2002 and 2011, one hundred thirty-eight patients at our institution underwent a lung transplant. Of these, 58 patients presented with idiopathic pulmonary fibrosis (56.9%) and were the focus of this study. Thirty-nine patients received a single lung transplant and 19 patients a bilateral sequential lung transplant. The mean patient age was 54 ± 10 years, and 69% were male. The intraoperative course was uneventful, save for 7 patients who needed extracorporeal membrane oxygenation support. Three patients had respiratory failure before the lung transplant that required mechanical ventilation and was supported by extracorporeal membrane oxygenation. Elevated pulmonary artery pressure > 40 mm Hg was identified as an independent predictor of early mortality by uni- and multivariate analysis (P = .01; OR 9.7). Using a Cox regression analysis, postoperative extracorporeal membrane oxyge-nation therapy (P = .01; OR 10.2) and the need for > 10 red blood cell concentrate during the first 72 hours after lung transplant (P = .01; OR 5.6) were independent predictors of long-term survival. Actuarial survival at 1 and 5 years was 65.6% and 55.3%, with no significant between-group differences (70.6% and 54.3%). Lung transplant is a safe and curative treatment for idiopathic pulmonary fibrosis. According to our results, unilateral lung transplant for idiopathic pulmonary fibrosis is an alternative to bilateral lung transplant and may affect the allocation process.

  7. I spy with my little eye - the detection of intentional contingency in early psychosis.

    Science.gov (United States)

    Fett, Anne-Kathrin J; González Berdugo, Clara Isabel; Hanssen, Esther; Lemmers-Jansen, Imke; Shergill, Sukhi S; Krabbendam, Lydia

    2015-01-01

    Paranoid delusions have been associated with a tendency to over-attribute intentionality and contingency to others' actions and incidental events in individuals with chronic psychosis. However, this hyper-associative perception bias has not been investigated in the early illness stages of psychosis, during which it may play a particularly crucial role in the formation of symptoms. We used an experimental paradigm with 20 short film clips of simple animate and inanimate shapes that either moved in a contingent or non-contingent manner to investigate the perception of contingency in 38 adolescents with early psychosis and 93 healthy control adolescents. Participants rated the contingency between the shapes' movements on a scale from 0 to 10. The data were analysed with multilevel regression analyses to account for repeated measures within subjects. There were no significant differences between patients and controls; both perceived the contingency of the shapes' movements similarly across all conditions and patients' contingency perception was unrelated to their levels of paranoid delusions. Contingency perception was unimpaired in patients with early psychosis, suggesting that it might still be intact in the early illness stages. Future studies should set out to determine whether the early illness stages could offer a window for interventions that counteract the development of hyper-associative perceptions of contingency.

  8. Contingency Contractor Optimization Phase 3 Sustainment Third-Party Software List - Contingency Contractor Optimization Tool - Prototype

    Energy Technology Data Exchange (ETDEWEB)

    Durfee, Justin David; Frazier, Christopher Rawls; Bandlow, Alisa

    2016-05-01

    The Contingency Contractor Optimization Tool - Prototype (CCOT-P) requires several third-party software packages. These are documented below for each of the CCOT-P elements: client, web server, database server, solver, web application and polling application.

  9. Flexibility to contingency changes distinguishes habitual and goal-directed strategies in humans.

    Science.gov (United States)

    Lee, Julie J; Keramati, Mehdi

    2017-09-01

    Decision-making in the real world presents the challenge of requiring flexible yet prompt behavior, a balance that has been characterized in terms of a trade-off between a slower, prospective goal-directed model-based (MB) strategy and a fast, retrospective habitual model-free (MF) strategy. Theory predicts that flexibility to changes in both reward values and transition contingencies can determine the relative influence of the two systems in reinforcement learning, but few studies have manipulated the latter. Therefore, we developed a novel two-level contingency change task in which transition contingencies between states change every few trials; MB and MF control predict different responses following these contingency changes, allowing their relative influence to be inferred. Additionally, we manipulated the rate of contingency changes in order to determine whether contingency change volatility would play a role in shifting subjects between a MB and MF strategy. We found that human subjects employed a hybrid MB/MF strategy on the task, corroborating the parallel contribution of MB and MF systems in reinforcement learning. Further, subjects did not remain at one level of MB/MF behaviour but rather displayed a shift towards more MB behavior over the first two blocks that was not attributable to the rate of contingency changes but rather to the extent of training. We demonstrate that flexibility to contingency changes can distinguish MB and MF strategies, with human subjects utilizing a hybrid strategy that shifts towards more MB behavior over blocks, consequently corresponding to a higher payoff.

  10. Role of contingency in striatal response to incentive in adolescents with anxiety.

    Science.gov (United States)

    Benson, Brenda E; Guyer, Amanda E; Nelson, Eric E; Pine, Daniel S; Ernst, Monique

    2015-03-01

    This study examines the effect of contingency on reward function in anxiety. We define contingency as the aspect of a situation in which the outcome is determined by one's action-that is, when there is a direct link between one's action and the outcome of the action. Past findings in adolescents with anxiety or at risk for anxiety have revealed hypersensitive behavioral and neural responses to higher value rewards with correct performance. This hypersensitivity to highly valued (salient) actions suggests that the value of actions is determined not only by outcome magnitude, but also by the degree to which the outcome is contingent on correct performance. Thus, contingency and incentive value might each modulate reward responses in unique ways in anxiety. Using fMRI with a monetary reward task, striatal response to cue anticipation is compared in 18 clinically anxious and 20 healthy adolescents. This task manipulates orthogonally reward contingency and incentive value. Findings suggest that contingency modulates the neural response to incentive magnitude differently in the two groups. Specifically, during the contingent condition, right-striatal response tracks incentive value in anxious, but not healthy, adolescents. During the noncontingent condition, striatal response is bilaterally stronger to low than to high incentive in anxious adolescents, while healthy adolescents exhibit the expected opposite pattern. Both contingency and reward magnitude differentiate striatal activation in anxious versus healthy adolescents. These findings may reflect exaggerated concern about performance and/or alterations of striatal coding of reward value in anxious adolescents. Abnormalities in reward function in anxiety may have treatment implications.

  11. 5-HT modulation by acute tryptophan depletion of human instrumental contingency judgements.

    Science.gov (United States)

    Chase, Henry W; Crockett, Molly J; Msetfi, Rachel M; Murphy, Robin A; Clark, Luke; Sahakian, Barbara J; Robbins, Trevor W

    2011-02-01

    The concept of 'depressive realism', that depression leads to more accurate perception of causal control, has been influential in the field of depression research, but remains controversial. Recent work testing contingency learning has suggested that contextual processing might determine realism-like effects. Serotonin (5-hydroxytryptamine, (5-HT)), which is implicated in the pathophysiology of depression, might also influence contextual processing. Using acute tryptophan depletion (ATD), we tested the hypothesis that dysfunctional serotoninergic neurotransmission influences contingency judgements in dysphoric subjects via an effect on contextual processing. We employed a novel contingency learning task to obtain separate measures (ratings) of the causal effect of participants' responses and efficacy of the background context over an outcome. Participants, without a history of depression, completed this task on and off ATD in a double-blind, placebo-controlled, within-subjects design. As with other work on contingency learning, the effects of ATD were related to baseline mood levels. Although no overall effects of ATD were observed, the subgroup of participants with low Beck depression inventory (BDI) scores showed reduced ratings of contextual control and improved accuracy of contingency judgements under positive contingencies following ATD, compared to placebo. High BDI participants demonstrated low accuracy in contingency judgements, regardless of serotoninergic status. No effect of ATD on contingency judgements was observed in the group as a whole, but effects were observed in a subgroup of participants with low BDI scores. We discuss these data in light of the context processing hypothesis, and prior research on 5-HT and depressive realism.

  12. Flexibility to contingency changes distinguishes habitual and goal-directed strategies in humans.

    Directory of Open Access Journals (Sweden)

    Julie J Lee

    2017-09-01

    Full Text Available Decision-making in the real world presents the challenge of requiring flexible yet prompt behavior, a balance that has been characterized in terms of a trade-off between a slower, prospective goal-directed model-based (MB strategy and a fast, retrospective habitual model-free (MF strategy. Theory predicts that flexibility to changes in both reward values and transition contingencies can determine the relative influence of the two systems in reinforcement learning, but few studies have manipulated the latter. Therefore, we developed a novel two-level contingency change task in which transition contingencies between states change every few trials; MB and MF control predict different responses following these contingency changes, allowing their relative influence to be inferred. Additionally, we manipulated the rate of contingency changes in order to determine whether contingency change volatility would play a role in shifting subjects between a MB and MF strategy. We found that human subjects employed a hybrid MB/MF strategy on the task, corroborating the parallel contribution of MB and MF systems in reinforcement learning. Further, subjects did not remain at one level of MB/MF behaviour but rather displayed a shift towards more MB behavior over the first two blocks that was not attributable to the rate of contingency changes but rather to the extent of training. We demonstrate that flexibility to contingency changes can distinguish MB and MF strategies, with human subjects utilizing a hybrid strategy that shifts towards more MB behavior over blocks, consequently corresponding to a higher payoff.

  13. Economics and Outcome After Hematopoietic Stem Cell Transplantation: A Retrospective Cohort Study.

    Science.gov (United States)

    Gratwohl, Alois; Sureda, Anna; Baldomero, Helen; Gratwohl, Michael; Dreger, Peter; Kröger, Nicolaus; Ljungman, Per; McGrath, Eoin; Mohty, Mohamad; Nagler, Arnon; Rambaldi, Alessandro; de Elvira, Carmen Ruiz; Snowden, John A; Passweg, Jakob; Apperley, Jane; Niederwieser, Dietger; Stijnen, Theo; Brand, Ronald

    2015-12-01

    Hematopoietic stem cell transplantation (HSCT) is a lifesaving expensive medical procedure. Hence, more transplants are performed in more affluent countries. The impact of economic factors on patient outcome is less defined. We analyzed retrospectively a defined cohort of 102,549 patients treated with an allogeneic (N = 37,542; 37%) or autologous (N = 65,007; 63%) HSCT. They were transplanted by one of 404 HSCT centers in 25 European countries between 1999 and 2006. We searched for associations between center-specific microeconomic or country-specific macroeconomic factors and outcome. Center patient-volume and center program-duration were significantly and systematically associated with improved survival after allogeneic HSCT (HR 0·87; 0·84-0·91 per 10 patients; p < 0·0001; HR 0·90;0·85-0·90 per 10 years; p < 0·001) and autologous HSCT (HR 0·91;0·87-0·96 per 10 patients; p < 0·001; HR 0·93;0·87-0·99 per 10 years; p = 0·02). The product of Health Care Expenditures by Gross National Income/capita was significantly associated in multivariate analysis with all endpoints (R(2) = 18%; for relapse free survival) after allogeneic HSCT. Data indicate that country- and center-specific economic factors are associated with distinct, significant, systematic, and clinically relevant effects on survival after HSCT. They impact on center expertise in long-term disease and complication management. It is likely that these findings apply to other forms of complex treatments.

  14. Roentgenologic characteristic of 7 group contingent of dispensary registration

    International Nuclear Information System (INIS)

    Derzhavin, V.I.; Nalivajko, N.N.; Kozlova, L.N.; Petrik, R.N.

    1984-01-01

    9694 persons of 7 group contingent of dispensary registration were examined. Roentgenologic study of posttuberculous changes of 7 group contingent of dispensary registration showed that in people of 7-A subgroup prevail processes of secondary genesis (79.4%) and in people of 7-B subgroup - of primary genesis (55.8%). Consequences of secondary tuberculosis are most recurring

  15. Analisa Kemampuan Saluran Berdasarkan Metode Contingency N-1 Analysis

    OpenAIRE

    Syukriyadin,; Susanti, Rahmi

    2010-01-01

    Sistem transmisi memegang peranan yang sangatpenting dalam proses penyaluran daya. Oleh karena itupengamanan pada saluran transmisi perlu mendapatperhatian yang serius dalam perencanaannya. Analisakemampuan saluran merupakan aplikasi untuk mempelajarikestabilan sistem. Analisa kemampuan saluran dalampenelitian ini menggunakan metode contingency N-1 analysis.Contingency N-1 analysis merupakan sebuah program untukmemperhitungkan berbagi kondisi yang mungkin terjadidalam sistem dimasa yang akan ...

  16. [Transplantation in diabetes type 1--current problems and perspectives].

    Science.gov (United States)

    Wasikowa, Renata; Noczyńska, Anna; Basiak, Aleksander

    2004-01-01

    Diabetes type 1 is, as we know, a chronic progressive disease, which requires a substitutional therapy with insulin for the whole life. The cause is a definite destruction of the pancreatic beta cells. For many years there have been intensive investigations on the possibility to obtain a complete, persistent withdrawal of the symptoms. Substitution of the destroyed, not active cells, could take place after transplantation of the whole pancreas, transplantation of pancreatic islets or transplantation of stem cells. This is now the only method which may cause an independence from exogenous insulin, persistent normoglycemia, normal HbA1c level, without risk of hypoglycemia. Pancreas and islets transplantations, however, are connected till now with the necessity of an immunosuppressive therapy for the whole life, with the toxicity of the drugs, incidence of frequent infections and malignancy. Pancreas transplantation is a serious surgical intervention, connected with numerous risks and complications, considerably less risk appears in islet cell transplantations. Since 2000 exclusively islet cell transplantations have been performed. One of the leading centers is Edmonton, where professor Shapiro prepared the so called. Edmonton protocol which is characterized by using corticosteroid-free immunosuppressive drugs, islet cells from two or more donors, repeated till the attainment of insulin dependence. A problem now is that the islets are obtained from cadavers. Therefore intensive research is conducted for alternative sources of beta cells. At this moment it is mostly preferred for receiving a sufficient number of insulin producing cells to develop stem cells with a subsequent differentiation to insulin producing cells. The mentioned cells have an unlimited ability of reproduction, in this case also immunosuppressive therapy is not necessary. Alternative sources of beta cells are cells achieved on the genetic engineering, embryonic or adult somatic stem cells. It is

  17. Islet transplantation in multicenter networks: the GRAGIL example

    International Nuclear Information System (INIS)

    Thierry Berney; Pierre-Yves Benhamou; Laurence Kessler; Philippe Morel

    2006-01-01

    Purpose of review: The enthusiasm generated by the results of the Edmonton protocol of islet transplantation is inciting a great number of institutions to start such programs. However, the procedure of islet isolation and purification is costly, complex and technically challenging. In order to share costs and to avoid facing the steep learning curve of the procedure, many centers interested in islet transplantation have looked into collaborating with experienced groups serving as core islet isolation facilities. Recent findings: The proof of principle that remote islet processing and shipment could be successfully implemented with obtainng the Portland/Minneapolis, Huddinge/Giessen and Houston/Miami partnerships. Moreover, in order to increase both the donor pool and the number of patients gaining access to islet transplantation, multicenter networks, such as the Swiss-French GRAGIL consortium and the 4-country Nordic Network in Scandinavia have been built. The GRAGIL group has been fully operational since 1999, allowing the transplantation of 27 islet preparations processed in Geneva, Switzerland into 20 recipients in France over the course of 4.5 years. Organizational issues in the design of such networks are discussed based on the example of the GRAGIL experience. Summary: The feasibility and the efficiency of islet transplantation in multicenter networks have been demonstrated. This strategy allows to increase the donor pool and the accessibility to islet transplantation in an extended population area. (authors)

  18. Predicting and preventing readmissions in kidney transplant recipients.

    Science.gov (United States)

    Covert, Kelly L; Fleming, James N; Staino, Carmelina; Casale, Jillian P; Boyle, Kimberly M; Pilch, Nicole A; Meadows, Holly B; Mardis, Caitlin R; McGillicuddy, John W; Nadig, Satish; Bratton, Charles F; Chavin, Kenneth D; Baliga, Prabhakar K; Taber, David J

    2016-07-01

    A lack of research exploring post-transplant process optimization to reduce readmissions and increasing readmission rates at our center from 2009 to 2013 led to this study, aimed at assessing the effect of patient and process factors on 30-d readmission rates after kidney transplantation. This was a retrospective case-control study in adult kidney transplant recipients. Univariate and multivariate analyses were utilized to assess patient and process determinants of 30-d readmissions. 384 patients were included; 30-d readmissions were significantly associated with graft loss and death (p = 0.001). Diabetes (p = 0.049), pharmacist identification of poor understanding or adherence, and prolonged time on hemodialysis prior to transplant were associated with an increased risk of 30-d readmissions. After controlling for risk factors, readmission rates were only independently predicted by pharmacist identification of patient lack of understanding or adherence regarding post-transplant medications and dialysis exposure for more than three yr (OR 2.3, 95% CI 1.10-4.71, p = 0.026 and OR 2.1, 95% CI 1.22, 3.70, respectively), both of which were significantly modified by history of diabetes. Thirty-d readmissions are attributable to both patient and process-level factors. These data suggest that a lack of post-transplant medication knowledge in high-risk patients drives early hospital readmission. © 2016 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  19. Extended child and caregiver benefits of behavior-based child contingency learning games.

    Science.gov (United States)

    Dunst, Carl J; Raab, Melinda; Trivette, Carol M; Wilson, Linda L; Hamby, Deborah W; Parkey, Cindy

    2010-08-01

    Findings from 2 studies of the relationship between response-contingent child behavior and child, caregiver-child, and caregiver behavior not directly associated with child contingency learning are described. The participants were 19 children with significant developmental delays and their mothers in 1 study and 22 children with significant developmental delays and their teachers in the second study. Caregivers engaged the children in learning games characterized by behavior-based contingencies for 15 weeks. Research staff observed the children and their caregivers in everyday routines and activities and rated child and caregiver behavior while the children and caregivers were not playing the games. Results from both studies showed that the degree of response-contingent responding during the games was related to child and caregiver behavior, not the focus of the contingency learning opportunities afforded the children. Implications for practice are described.

  20. When the Battle is Lost and Won: Delayed Chest Closure After Bilateral Lung Transplantation.

    Science.gov (United States)

    Soresi, Simona; Sabashnikov, Anton; Weymann, Alexander; Zeriouh, Mohamed; Simon, André R; Popov, Aron-Frederik

    2015-10-12

    In this article we summarize benefits of delayed chest closure strategy in lung transplantation, addressing indications, different surgical techniques, and additional perioperative treatment. Delayed chest closure seems to be a valuable and safe strategy in managing patients with various conditions after lung transplantation, such as instable hemodynamics, need for high respiratory pressures, coagulopathy, and size mismatch. Therefore, this approach should be considered in lung transplant centers to give patients time to recover before the chest is closed.

  1. Fast and precise method of contingency ranking in modern power system

    DEFF Research Database (Denmark)

    Rather, Zakir Hussain; Chen, Zhe; Thøgersen, Paul

    2011-01-01

    Contingency Analysis is one of the most important aspect of Power System Security Analysis. This paper presents a fast and precise method of contingency ranking for effective power system security analysis. The method proposed in this research work takes due consideration of both apparent power o...... is based on realistic approach taking practical situations into account. Besides taking real situations into consideration the proposed method is fast enough to be considered for on-line security analysis.......Contingency Analysis is one of the most important aspect of Power System Security Analysis. This paper presents a fast and precise method of contingency ranking for effective power system security analysis. The method proposed in this research work takes due consideration of both apparent power...

  2. Living donor liver transplantation for hepatocellular carcinoma achieves better outcomes.

    Science.gov (United States)

    Lin, Chih-Che; Chen, Chao-Long

    2016-10-01

    Liver transplantation (LT) for hepatocellular carcinoma (HCC) at Kaohsiung Chang Gung Memorial Hospital mainly relies on live donor LT (LDLT). Owing to taking the risk of LD, we are obligated to adopt strict selection criteria for HCC patients and optimize the pre-transplant conditions to ensure a high disease-free survival similar to those without HCC, even better than deceased donor LT (DDLT). Better outcomes are attributed to excellent surgical results and optimal patient selection. The hospital mortality of primary and salvage LDLT are lower than 2% in our center. Although Taiwan Health Insurance Policy extended the Milan to University of California, San Francisco (UCSF) criteria in 2006, selection criteria will not be consolidated to take into account only by the morphologic size/number of tumors but also by their biology. The criteria are divided into modifiable image morphology, alpha fetoprotein (AFP), and positron emission tomography (PET) scan with standard uptake value (SUV) and unmodifiable unfavorable pathology such as HCC combined with cholangiocarcinoma (CC), sarcomatoid type, and poor differentiation. Downstaging therapy is necessary for HCC patients beyond criteria to fit all modifiable standards. The upper limit of downstaging treatment seems to be extended by more effective drug eluting transarterial chemoembolization in cases without absolute contraindications. In contrast, the pitfall of unmodifiable tumor pathology should be excluded by the findings of pretransplant core biopsy/resection if possible. More recently, achieving complete tumor necrosis in explanted liver could almost predict no recurrence after transplant. Necrotizing therapy is advised if possible before transplant even the tumor status within criteria to minimize the possibility of tumor recurrence. LDLT with low surgical mortality in experienced centers provides the opportunities of optimizing the pre-transplant tumor conditions and timing of transplant to achieve better

  3. 48 CFR 603.405 - Misrepresentations or violations of the Covenant Against Contingent Fees.

    Science.gov (United States)

    2010-10-01

    ... 48 Federal Acquisition Regulations System 4 2010-10-01 2010-10-01 false Misrepresentations or violations of the Covenant Against Contingent Fees. 603.405 Section 603.405 Federal Acquisition Regulations... Contingent Fees 603.405 Misrepresentations or violations of the Covenant Against Contingent Fees. (a) The...

  4. Contingency Operations of Americas Next Moon Rocket, Ares V

    Science.gov (United States)

    Jaap, John; Richardson, Lea

    2010-01-01

    America has begun the development of a new space vehicle system which will enable humans to return to the moon and reach even farther destinations. The system is called Constellation: it has 2 earth-launch vehicles, Ares I and Ares V; a crew module, Orion; and a lander, Altair with descent and ascent stages. Ares V will launch an Earth Departure Stage (EDS) and Altair into low earth orbit. Ares I will launch the Orion crew module into low earth orbit where it will rendezvous and dock with the Altair and EDS "stack". After rendezvous, the stack will contain four complete rocket systems, each capable of independent operations. Of course this multiplicity of vehicles provides a multiplicity of opportunities for off-nominal behavior and multiple mitigation options for each. Contingency operations are complicated by the issues of crew safety and the possibility of debris from the very large components impacting the ground. This paper examines contingency operations of the EDS in low earth orbit, during the boost to translunar orbit, and after the translunar boost. Contingency operations under these conditions have not been a consideration since the Apollo era and analysis of the possible contingencies and mitigations will take some time to evolve. Since the vehicle has not been designed, much less built, it is not possible to evaluate contingencies from a root-cause basis or from a probability basis; rather they are discussed at an effects level (such as the reaction control system is consuming propellant at a high rate). Mitigations for the contingencies are based on the severity of the off-nominal condition, the time of occurrence, recovery options, options for alternate missions, crew safety, evaluation of the condition (forensics) and future prevention. Some proposed mitigations reflect innovation in thinking and make use of the multiplicity of on-orbit resources including the crew; example: Orion could do a "fly around" to allow the crew to determine the condition

  5. The southern region renal transplant program at armed forces hospital, khamis mushayt.

    Science.gov (United States)

    Mohammed, A S; Al-Hashemy, A; Addous, A J; Ismail, G

    1996-01-01

    The Southern Region renal transplant program was established in February 1989. The appointment of a transplant co-ordinator and creation of a waiting list for the Southern Region as well as tissue typing of all patients in the region were important early steps. Between February 1989 and December 1995, 155 transplants were performed on 152 patients at the Armed Forces Hospital, Southern Region (AFHSR). Of them, 52 were cadaveric donor transplants and the remaining were from living related donors. The overall five-year actuarial patient and graft survival was 93% and 78% respectively. Of the 152 patients who were transplanted, 79 patients were from other hospitals in the region and 73 were from AFHSR. Maintenance immunosuppression consisted of cyclosporin, azathioprine and prednisolone. Use of the spouse as a donor was an early feature of this program. Our results compare favorably with results published from other centers. To cope with the increasing demand of transplantation in the Southern Region, we have to look into ways of increasing our transplant numbers to match the needs.

  6. Hospital-onset Clostridium difficile infection among solid organ transplant recipients.

    Science.gov (United States)

    Donnelly, J P; Wang, H E; Locke, J E; Mannon, R B; Safford, M M; Baddley, J W

    2015-11-01

    Clostridium difficile infection (CDI) is a considerable health issue in the United States and represents the most common healthcare-associated infection. Solid organ transplant recipients are at increased risk of CDI, which can affect both graft and patient survival. However, little is known about the impact of CDI on health services utilization posttransplantation. We examined hospital-onset CDI from 2012 to 2014 among transplant recipients in the University HealthSystem Consortium, which includes academic medical center-affiliated hospitals in the United States. Infection was five times more common among transplant recipients than among general medicine inpatients (209 vs 40 per 10 000 discharges), and factors associated with CDI among transplant recipients included transplant type, risk of mortality, comorbidities, and inpatient complications. Institutional risk-standardized CDI varied more than 3-fold across high-volume hospitals (infection ratio 0.54-1.82, median 1.04, interquartile range 0.78-1.28). CDI was associated with increased 30-day readmission, transplant organ complications, cytomegalovirus infection, inpatient costs, and lengths of stay. Total observed inpatient days and direct costs for those with CDI were substantially higher than risk-standardized expected values (40 094 vs 22 843 days, costs $198 728 368 vs $154 020 528). Further efforts to detect, prevent, and manage CDI among solid organ transplant recipients are warranted. © Copyright 2015 The American Society of Transplantation and the American Society of Transplant Surgeons.

  7. Contingent self-worth moderates the relationship between school stressors and psychological stress responses.

    Science.gov (United States)

    Ishizu, Kenichiro

    2017-04-01

    This study examined the moderating role of contingent self-worth on the relationships between school stressors and psychological stress responses among Japanese adolescents. A total of 371 Japanese junior high school students (184 boys and 187 girls, M age  = 12.79 years, SD = 0.71) completed the Japanese version of the Self-Worth Contingency Questionnaire and a mental health checklist at two points separated by a two-month interval. Hierarchical multiple regression analyses were then used to determine whether contingent self-worth moderated the relationship between school stressors and psychological stress responses. The results indicated that, when psychological stress responses were controlled for at Time 1, contingent self-worth did not predict the psychological stress responses at Time 2. However, a two-way interaction between contingent self-worth and stressors was found to significantly influence psychological stress responses, thus indicating that stressors had a stronger impact on psychological stress responses among those with high contingent self-worth compared to those with low contingent self-worth. Copyright © 2017 The Foundation for Professionals in Services for Adolescents. Published by Elsevier Ltd. All rights reserved.

  8. National Contingency Plan Subpart J

    Science.gov (United States)

    Subpart J of the National Oil and Hazardous Substances Pollution Contingency Plan (NCP) directs EPA to prepare a schedule of dispersants, other chemicals, and oil spill mitigating devices and substances that may be used to remove or control oil discharges.

  9. Power plant construction lead times: The value of contingency planning

    International Nuclear Information System (INIS)

    Rubin, L.J.

    1985-01-01

    In this paper an analysis of two different approaches to the construction of a major power plant (nuclear) is presented. The analysis compares an accelerated, ''go-for-broke'' strategy-which has some risk of being delayed-with a more deliberate contingency construction schedule in terms of revenue requirements and costs of electricity. It is demonstrated that under a wide variety of circumstances there are important advantages to the contingency strategy, but that the magnitude of those advantages is sensitive to the character of the power system being examined and to the flexibility of the contingency approach

  10. International workshop: islet transplantation without borders enabling islet transplantation in Greece with international collaboration and innovative technology.

    Science.gov (United States)

    Papas, Klearchos K; Karatzas, Theodore; Berney, Thierry; Minor, Thomas; Pappas, Paris; Pattou, François; Shaw, James; Toso, Christian; Schuurman, Henk-Jan

    2013-01-01

    Recently, initiatives have been undertaken to establish an islet transplantation program in Athens, Greece. A major hurdle is the high cost associated with the establishment and maintenance of a clinical-grade islet manufacturing center. A collaboration was established with the University Hospitals of Geneva, Switzerland, to enable remote islet cell manufacturing with an established and validated fully operational team. However, remote islet manufacturing requires shipment of the pancreas from the procurement to the islet manufacturing site (in this case from anywhere in Greece to Geneva) and then shipment of the islets from the manufacturing site to the transplant site (from Geneva to Athens). To address challenges related to cold ischemia time of the pancreas and shipment time of islets, a collaboration was initiated with the University of Arizona, Tucson, USA. An international workshop was held in Athens, December 2011, to mark the start of this collaborative project. Experts in the field presented in three main sessions: (i) islet transplantation: state-of-the-art and the "network approach"; (ii) technical aspects of clinical islet transplantation and outcomes; and (iii) islet manufacturing - from the donated pancreas to the islet product. This manuscript presents a summary of the workshop. © 2013 John Wiley & Sons A/S.

  11. Results of renal transplantation of the Hashemi Nejad Kidney Hospital--Tehran.

    Science.gov (United States)

    Ghods, A J; Ossareh, S; Savaj, S

    2000-01-01

    The first renal transplant in Iran was carried out in 1967. The renal transplant program severely lagged behind hemodialysis in growth until 1988. In 1988, a controlled LURD renal transplant program was adopted to provide kidneys for the large number of dialysis patients needing a renal transplant. There was no cadaveric donor transplant program. By the end of 1999, a total of 9,535 renal transplants were performed and the renal transplant waiting list of the country had been eliminated. In Iran's LURD renal transplant program, the Dialysis and Transplant Patients Association introduces the volunteer LURD to the recipient and the transplant team. There are no middlemen and no incentives for transplant teams. The government pays all of the hospital expenses for transplantation. Many poor patients are able to afford LURD transplantation and more than 50% of our LURD transplant recipients are from the poor socioeconomic class. Ethical issues within the program are under the strict observation of the transplant teams and the Iranian Society for Organ Transplantation. We have noted that many LURD transplant recipients had a potential LRD who did not donate for cultural reasons or who was reluctant to donate. In the presence of a controlled LURD renal transplant program, we feel it is more ethical to perform a paid renal transplant from volunteer LURD than a renal transplant from an LRD who may be under family pressure or coerced. The patient and graft survival rates reported from our unit are comparable to the results of renal transplants reported from centers of some other countries. Some patient deaths and graft losses could have been prevented if our transplant units were not deficient with respect to laboratory facilities and access to pharmaceutical agents. In April 2000, legislation recognizing brain death and cadaveric organ transplantation passed our parliament. Strong cultural barriers may limit the scale of cadaver donor transplantation in the coming years and

  12. Public education programme for nuclear contingency planning in Hong Kong

    International Nuclear Information System (INIS)

    Wong, M. C.; Li, S. W.

    2002-01-01

    Two nuclear power stations on the coast of southern China are situated some 50 kilometers to the northeast of Hong Kong. Although the stations are far away from Hong Kong, the construction and operation of the nuclear power stations have generated public anxiety locally, in particular, after the Chernobyl accident in 1986. A comprehensive contingency plan which takes into account such concerns of the public has been implemented in Hong Kong. Cooperation by the public is vital to the effective implementation of any contingency plan. Understanding of the basics of radiation protection as well as the contingency plan will help the public to appreciate the situation and react in a rational manner. A public education program to promote awareness of the contingency plan has been implemented in Hong Kong. In particular, a Virtual Exhibition Hall on radiation has been developed and launched in February 2002 for access by the public via Internet. A video and a set of web pages will be launched in the later part of 2002 to inform and educate the public on matters related to nuclear accident response in Hong Kong. This paper describes the public education programme in Hong Kong to promote public awareness and understanding of the nuclear contingency plan

  13. Use of the quality management system "JACIE" and outcome after hematopoietic stem cell transplantation.

    Science.gov (United States)

    Gratwohl, Alois; Brand, Ronald; McGrath, Eoin; van Biezen, Anja; Sureda, Anna; Ljungman, Per; Baldomero, Helen; Chabannon, Christian; Apperley, Jane

    2014-05-01

    Competent authorities, healthcare payers and hospitals devote increasing resources to quality management systems but scientific analyses searching for an impact of these systems on clinical outcome remain scarce. Earlier data indicated a stepwise improvement in outcome after allogeneic hematopoietic stem cell transplantation with each phase of the accreditation process for the quality management system "JACIE". We therefore tested the hypothesis that working towards and achieving "JACIE" accreditation would accelerate improvement in outcome over calendar time. Overall mortality of the entire cohort of 107,904 patients who had a transplant (41,623 allogeneic, 39%; 66,281 autologous, 61%) between 1999 and 2006 decreased over the 14-year observation period by a factor of 0.63 per 10 years (hazard ratio: 0.63; 0.58-0.69). Considering "JACIE"-accredited centers as those with programs having achieved accreditation by November 2012, at the latest, this improvement was significantly faster in "JACIE"-accredited centers than in non-accredited centers (approximately 5.3% per year for 49,459 patients versus approximately 3.5% per year for 58,445 patients, respectively; hazard ratio: 0.83; 0.71-0.97). As a result, relapse-free survival (hazard ratio 0.85; 0.75-0.95) and overall survival (hazard ratio 0.86; 0.76-0.98) were significantly higher at 72 months for those patients transplanted in the 162 "JACIE"-accredited centers. No significant effects were observed after autologous transplants (hazard ratio 1.06; 0.99-1.13). Hence, working towards implementation of a quality management system triggers a dynamic process associated with a steeper reduction in mortality over the years and a significantly improved survival after allogeneic stem cell transplantation. Our data support the use of a quality management system for complex medical procedures.

  14. Two-as-one monolateral dual kidney transplantation.

    Science.gov (United States)

    Veroux, Pierfrancesco; Giuffrida, Giuseppe; Cappellani, Alessandro; Caglià, Pietro; Palmucci, Stefano; Sorbello, Massimiliano; Puzzo, Lidia; Veroux, Massimiliano

    2011-01-01

    Dual kidney transplantation (DKT) of marginal kidneys could offer transplant candidates a very satisfactory kidney transplantation in terms of renal function. However, DKT might be considered a major surgical procedure and, in older recipients, has a potentially greater risk of surgical complications compared with single kidney transplantation. Because of these findings, some transplant centers have replaced the classic bilateral placement of 2 kidneys with the monolateral placement of both kidneys. In a group of 35 DKTs performed during a 5-year period, we applied a new technique of monolateral placement of DKT in 10 recipients. In these 10 patients, the arteries and veins of the 2 kidneys were joined through a running suture, and the joined kidneys were anastomosed into the external iliac vessels in the recipient. The delayed graft function rate was 20%. No surgical complications developed in the entire series. One patient experienced late rejection with ureteral stricture. The graft and patient survival rate at a median follow-up of 30 months was 90%. To reduce the surgical risk and morbidity rate, the monolateral placement of both kidneys seems the safest method to perform DKT. The joined monolateral DKT, by reducing the cold ischemia time and the surgical trauma, could represent a step forward in the delicate treatment of these patients. Copyright © 2011 Elsevier Inc. All rights reserved.

  15. Successful introduction of Model for End-stage Liver Disease scoring in deceased donor liver transplantation in Korea: analysis of first 1 year experience at a high-volume transplantation center.

    Science.gov (United States)

    Ha, Soo-Min; Hwang, Shin; Song, Gi-Won; Ahn, Chul-Soo; Moon, Deok-Bog; Ha, Tae-Yong; Jung, Dong-Hwan; Park, Gil-Chun; Kim, Ki-Hun; Kim, Dae-Yeon; Namgung, Jungman; Kang, Woo-Hyoung; Kim, Seok-Hwan; Jwa, Eunkyoung; Kwon, Jae-Hyeon; Cho, Hui-Dong; Jung, Yong-Kyu; Kang, Sang-Hyeon; Lee, Sung-Gyu

    2017-11-01

    Model for End-stage Liver Disease (MELD) score was adopted in June 2016 in Korea. We analyzed changes in volumes and outcomes of deceased donor liver transplantation (DDLT) for 1 year before and after introduction of MELD scoring at Asan Medical Center. There were 64 cases of DDLT in 1 year before MELD introduction and 106 in 1 year after MELD introduction, an increase of 65%. The volume of DDLTs abruptly increased during first 3 months, but then returned to its usual level before MELD introduction, which indicated 3-month depletion of accumulated recipient pool with high MELD scores. The number of pediatric DDLT cases increased from 3 before MELD introduction to 11 after it, making up 21.4% and 47.8% of all cases of pediatric liver transplantation, respectively. The number of cases of retransplanted DDLTs increased from 4 to 27, representing 6.3% and 25.5% of all DDLT cases, respectively. The number of status 1 DDLT cases increased from 5 to 12, being 7.8% and 11.3% of all cases. Patient survival outcomes were similar before and after MELD introduction. The number of DDLTs temporarily increased after adoption of MELD scoring due to accumulated recipient pool with high MELD scores. The numbers of retransplanted and pediatric DDLT cases significantly increased. Patient survival in adult and pediatric DDLT was comparable before and after adoption of MELD scoring. These results imply that Korean MELD score-based allocation system was successfully established within its first year.

  16. Sodium bicarbonate infusion in patients undergoing orthotopic liver transplantation: a single center randomized controlled pilot trial.

    Science.gov (United States)

    Weinberg, Laurence; Broad, Jeremy; Pillai, Param; Chen, Guangjun; Nguyen, Micheline; Eastwood, Glenn M; Scurrah, Nick; Nikfarjam, Mehrdad; Story, David; McNicol, Larry; Bellomo, Rinaldo

    2016-05-01

    Liver transplantation-associated acute kidney injury (AKI) carries significant morbidity and mortality. We hypothesized that sodium bicarbonate would reduce the incidence and/or severity of liver transplantation-associated AKI. In this double-blinded pilot RCT, adult patients undergoing orthotopic liver transplantation were randomized to an infusion of either 8.4% sodium bicarbonate (0.5 mEq/kg/h for the first hour; 0.15 mEq/kg/h until completion of surgery); (n = 30) or 0.9% sodium chloride (n = 30). AKI within the first 48 h post-operatively. There were no significant differences between the two treatment groups with regard to baseline characteristics, model for end-stage liver disease and acute physiology and chronic health evaluation (APACHE) II scores, and pre-transplantation renal function. Intra-operative factors were similar for duration of surgery, blood product requirements, crystalloid and colloid volumes infused and requirements for vasoactive therapy. Eleven patients (37%) in the bicarbonate group and 10 patients (33%) in the sodium chloride group developed a post-operative AKI (p = 0.79). Bicarbonate infusion attenuated the degree of immediate post-operative metabolic acidosis; however, this effect dissipated by 48 h. There were no significant differences in ventilation hours, ICU or hospital length of stay, or mortality. The intra-operative infusion of sodium bicarbonate did not decrease the incidence of AKI in patients following orthotopic liver transplantation. © 2016 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  17. Collectivists' contingency and autonomy as predictors of buffet preferences among Taiwanese adolescents.

    Science.gov (United States)

    Chiou, Wen-Bin

    2006-01-01

    In a culture or society with high collectivism, contingent orientation and constrained autonomy are the prominent characteristics of adolescents' self-construal. This article examined whether Taiwanese adolescents' contingency and autonomy were associated with their prevalent preferences for buffet consumption. Findings in a panel survey indicated that contingency was positively correlated with adolescents' buffet preference, whereas autonomy was negatively correlated. Moreover, the results showed that adolescents' contingent orientation and perceived autonomy could predict their subsequent buffet preference over a half-year period. A laboratory experiment showed that adolescents who perceived lower autonomy exhibited greater preferences for buffet over the other diet consumption. In general, the results suggest that collectivist adolescents' contingency and autonomy were related to their trait-like preferences for buffet, and the state-like preferences for buffet were affected by their perceived levels of autonomy. Findings provide further insights into the impact of adolescents' self-construal on their diet consumption.

  18. Tests of the power PC theory of causal induction with negative contingencies.

    Science.gov (United States)

    Shanks, David R

    2002-01-01

    The power PC theory of causal induction (Cheng, 1997) proposes that causal estimates are based on the power p of a potential cause, where p is the contingency between the cause and effect normalized by the base rate of the effect. Previous tests of this theory have concentrated on generative causes that have positive contingencies with their associated outcomes. Here we empirically test this theory in two experiments using preventive causes that have negative contingencies for their outcomes. Contrary to the power PC theory, the results show that causal judgments vary with contingency across conditions of constant power p. This pattern is consistent, however, with several alternative accounts of causal judgment.

  19. An analysis of contingency statements in a DRO procedure: A case report.

    Science.gov (United States)

    Gerow, Stephanie; Rispoli, Mandy; Boles, Margot B; Neely, Leslie C

    2015-06-01

    To examine latency to criterion for reduction of challenging behaviour with and without stating a contingency statement immediately prior to a DRO procedure. An ABAC design in which A was baseline, B was used to evaluate the efficacy of a DRO procedure, and C was used to evaluate the efficacy of a DRO procedure with a contingency statement. The DRO with the contingency statement intervention was associated with a shorter latency to behaviour change than the DRO procedure without the contingency statement. These preliminary findings from this case study highlight the importance of examining the efficiency of behaviour change procedures. Directions for future research are provided.

  20. The budget impact and cost-effectiveness of defibrotide for treatment of veno-occlusive disease with multi-organ dysfunction in patients post-hematopoietic stem cell transplant.

    Science.gov (United States)

    Veenstra, David L; Guzauskas, Gregory F; Villa, Kathleen F; Boudreau, Denise M

    2017-05-01

    A Phase-3 study of defibrotide compared with historical controls demonstrated a 23% improvement in 100-day survival post-hematopoietic stem cell transplantation (HSCT) among patients with veno-occlusive disease with multi-organ dysfunction (VOD with MOD). To estimate the budget impact and cost-effectiveness of introducing defibrotide to a transplant center. The authors developed a budget impact model from the perspective of a bone-marrow transplant center. It was estimated that 2.3% of adults and 4.2% of children would develop VOD with MOD following HSCT based on a retrospective hospital database analysis and the effect that treating patients with defibrotide would have on costs for adult and pediatric centers was estimated. A cost-utility analysis (CUA) was also developed to capture the long-term cost-effectiveness of defibrotide. Projected life expectancies in the two groups were estimated based on trial data, transplant registry data, studies of long-term survival among HSCT patients, and US population life-tables. There was an estimated 3% increase ($330,706) per year in total adult transplantation center costs associated with adopting defibrotide, and a incremental cost-effectiveness ratio (ICER) was $47,736 per QALY gained; 88% probability defibrotide was cost-effective at a $100,000/QALY threshold. The budget impact of defibrotide for a transplant center is relatively modest compared to the overall cost of transplantation. Defibrotide provides an important survival advantage for VOD with MOD patients, and the life years gained lead to defibrotide being highly cost-effective.

  1. Long-Term Outcomes of Intestinal and Multivisceral Transplantation at a Single Center in Argentina.

    Science.gov (United States)

    Ramisch, D; Rumbo, C; Echevarria, C; Moulin, L; Niveyro, S; Orce, G; Crivelli, A; Martinez, M I; Chavez, L; Paez, M A; Trentadue, J; Klein, F; Fernández, A; Solar, H; Gondolesi, G E

    2016-03-01

    Intestinal failure (IF) patients received parenteral nutrition (PN) as the only available therapy until intestinal transplantation (ITx) evolved as an accepted treatment. The aim of this article is to report the long-term outcomes of a series of ITx performed in pediatric and adult patients at a single center 9 years after its creation. This is a retrospective analysis of the ITx performed between May 2006 and January 2015. Diagnoses, pre-ITx mean time on PN, indications for ITx, time on the waiting list for types of ITx, mean total ischemia time, and warm ischemia time, time until PN discontinuation, incidence of acute and chronic rejection, and 5-year actuarial patient survival are reported. A total of 42 patients received ITx; 80% had short gut syndrome (SG); the mean time on PN was 1620 days. The main indication for ITx was lack of central venous access followed by intestinal failure-associated liver disease (IFALD) and catheter-related infectious complications. The mean time on the waiting list was 188 days (standard deviation, ±183 days). ITx were performed in 26 children and 14 adults. In all, 32 procedures were isolated ITx (IITX); 10 were multiorgan Tx (MOT; 3 combined, 7 multivisceral Tx (MVTx), 1 modified MVTx and 2 with kidney); 2 (4.7 %) were retransplantations: 1 IITx, 1 MVTx, and 5 including the right colon. Thirteen patients (31%) received abdominal rectus fascia. All procedures were performed by the same surgical team. Total ischemia time was 7:53 ± 2:04 hours, and warm ischemia time was 40.2 ± 10.5 minutes. The mean length of implanted intestine was 325 ± 63 cm. Bishop-Koop ileostomy was performed in 67% of cases. In all, 16 of 42 Tx required early reoperations. The overall mean follow-up time was 41 ± 35.6 months. The mean time to PN discontinuation after Tx was 68 days (P = .001). The total number of acute cellular rejection (ACR) episodes until the last follow-up was 83; the total number of grafts lost due to ACR was 4; and the total

  2. A single-center epidemiological study of BK virus infection and analysis of risk factors in patients with renal transplantation

    Directory of Open Access Journals (Sweden)

    Ji-gang LI

    2014-10-01

    Full Text Available Objective To investigate the epidemiological characteristics of BK virus (BKV infection in living renal transplantation patients, and analyze the risk factors of BKV infection and BKV nephropathy (BKVN. Methods The BKV DNA load in urine and blood samples of 43 renal transplant recipients, who had received renal transplantation in 309 Hospital from Feb. 2012 to Feb. 2013, was determined at preoperative period and 0.5, 1, 3, 6, 9, 12 and 15 months after transplantation. Meanwhile, the biopsy of grafted kidney was performed in those patients with continuously elevated serum creatinine and those with higher BKV DNA load. Patients were divided into 3 groups as follows according to the test results: BK viruria group, BK viremia group and pathologically diagnosed BKVN group. Data of each group were then recorded, including gender, age, postoperative diabetes (PTDM, acute rejection (AR, delayed recovery of graft function (DGF, postoperative pulmonary infection, preoperative immune induction therapy, postoperative immunosuppressive regimen, and other information. The risk factors for postoperative BKV infection and BKVN were analyzed. Results After an average of 15-month follow-up, it was found that the incidence of BKV viruria was 46.5%, that of BKV viremia was 14.0%, and that of BKVN was 2.3%. Sixth month after transplantation was found to be the peak time of viruria and viremia. FK506 was significantly associated with viremia in living donor renal transplantation. The immunosuppressive regimen was the immune related independent risk factor for BK viremia developing BKVN after living renal transplantation. Conclusion The incidence of BK viremia and BKVN is lower in living donor renal transplantation than in cadaver renal transplantation, but that of viruria is similar in both groups. Immunosuppressive scheme based on FK506 is an immune related independent risk factor leading to BK viremia proceeding to BKVN in living donor kidney

  3. Autologous or reduced-intensity conditioning allogeneic hematopoietic cell transplantation for chemotherapy-sensitive mantle-cell lymphoma: analysis of transplantation timing and modality.

    Science.gov (United States)

    Fenske, Timothy S; Zhang, Mei-Jie; Carreras, Jeanette; Ayala, Ernesto; Burns, Linda J; Cashen, Amanda; Costa, Luciano J; Freytes, César O; Gale, Robert P; Hamadani, Mehdi; Holmberg, Leona A; Inwards, David J; Lazarus, Hillard M; Maziarz, Richard T; Munker, Reinhold; Perales, Miguel-Angel; Rizzieri, David A; Schouten, Harry C; Smith, Sonali M; Waller, Edmund K; Wirk, Baldeep M; Laport, Ginna G; Maloney, David G; Montoto, Silvia; Hari, Parameswaran N

    2014-02-01

    To examine the outcomes of patients with chemotherapy-sensitive mantle-cell lymphoma (MCL) following a first hematopoietic stem-cell transplantation (HCT), comparing outcomes with autologous (auto) versus reduced-intensity conditioning allogeneic (RIC allo) HCT and with transplantation applied at different times in the disease course. In all, 519 patients who received transplantations between 1996 and 2007 and were reported to the Center for International Blood and Marrow Transplant Research were analyzed. The early transplantation cohort was defined as those patients in first partial or complete remission with no more than two lines of chemotherapy. The late transplantation cohort was defined as all the remaining patients. Auto-HCT and RIC allo-HCT resulted in similar overall survival from transplantation for both the early (at 5 years: 61% auto-HCT v 62% RIC allo-HCT; P = .951) and late cohorts (at 5 years: 44% auto-HCT v 31% RIC allo-HCT; P = .202). In both early and late transplantation cohorts, progression/relapse was lower and nonrelapse mortality was higher in the allo-HCT group. Overall survival and progression-free survival were highest in patients who underwent auto-HCT in first complete response. Multivariate analysis of survival from diagnosis identified a survival benefit favoring early HCT for both auto-HCT and RIC allo-HCT. For patients with chemotherapy-sensitive MCL, the optimal timing for HCT is early in the disease course. Outcomes are particularly favorable for patients undergoing auto-HCT in first complete remission. For those unable to achieve complete remission after two lines of chemotherapy or those with relapsed disease, either auto-HCT or RIC allo-HCT may be effective, although the chance for long-term remission and survival is lower.

  4. Contingency Teaching during Close Reading

    Science.gov (United States)

    Fisher, Douglas; Frey, Nancy

    2015-01-01

    12 teachers were interviewed and observed as they engaged students in close reading. We analyzed their responses and instruction to determine the scaffolds that were used as well as the contingency teaching plans they implemented when students were unable to understand the text.

  5. A Profile of Contingent Workers.

    Science.gov (United States)

    Polivka, Anne E.

    1996-01-01

    Based on data from the supplement to the February 1995 Current Population Survey, contingent workers were more likely to be female, black, young, enrolled in school, and employed in services and construction industries than were noncontingent workers. More than 10% were teachers. (Author)

  6. Post-transplant monitoring of soluble CD30 level as predictor of graft outcome: a single center experience from China.

    Science.gov (United States)

    Wang, Dong; Wu, Weizhen; Yang, Shunliang; Wang, Qinghua; Tan, Jianming

    2012-12-01

    There are no reliable parameters for post-transplantation immunological monitoring, which might enable recipient-tailored immunosuppressive therapy. 250 renal graft recipients were enrolled and detected for sCD30 level pre-transplantation, and on days 5 and 14, and on months 1, 3, 6, 12, 24, 36, 48 and 60 post-transplantation. Analysis was performed on correlation between sCD30 level and acute rejection, lung infection, or graft loss respectively. sCD30 levels descended to a nadir with a mean of 10.2 ± 3.8 U/mL on day 30 post-transplantation, then rose gradually, and approached 21.8 ± 10.1 U/mL on month 3, 34.2 ± 16.5 U/mL on month 6, and 42.9 ± 29.5 U/mL on month 12, then presented a stable level. Recipients with AR had significantly higher sCD30 levels than those without AR on days 5 and 14 post-transplantation. Recipients with pneumonia had significantly lower sCD30 levels within 3 months post-transplantation than those without pneumonia. Significantly higher sCD30 levels were recorded in recipients who suffered graft loss than those with normal graft function on days 5 and 14, and on months 6, 12, and 24. High sCD30 level (≥ 48.3 U/mL) at month 12 post-transplantation has an obvious detrimental effect on renal graft survival (p=0.000, HR=9.075). Serum sCD30 level might reflect immune state of renal graft recipients. Post-transplantation sequential monitoring of sCD30 level is necessary, which might not only identify recipients at the risk of acute rejection and graft loss, but also chosen as an independent predictor of pneumonia in renal transplant recipients. Copyright © 2012 Elsevier B.V. All rights reserved.

  7. Post-transplant lymphoproliferative disorder following kidney transplantation

    DEFF Research Database (Denmark)

    Maksten, Eva Futtrup; Vase, Maja Ølholm; Kampmann, Jan

    2016-01-01

    after long-term post-transplantation follow-up. A retrospective population-based cohort study including all kidney transplant recipients at two Danish centres (1990-2011; population covered 3.1 million; 2175 transplantations in 1906 patients). Pathology reports were reviewed for all patient biopsies...

  8. Radiological Contingency Planning for the Mars Science Laboratory Launch

    Energy Technology Data Exchange (ETDEWEB)

    Paul P. Guss

    2008-04-01

    This paper describes the contingency planning for the launch of the Mars Science Laboratory scheduled for the 21-day window beginning on September 15, 2009. National Security Technologies, LLC (NSTec), based in Las Vegas, Nevada, will support the U.S. Department of Energy (DOE) in its role for managing the overall radiological contingency planning support effort. This paper will focus on new technologies that NSTec’s Remote Sensing Laboratory (RSL) is developing to enhance the overall response capability that would be required for a highly unlikely anomaly. This paper presents recent advances in collecting and collating data transmitted from deployed teams and sensors. RSL is responsible to prepare the contingency planning for a range of areas from monitoring and assessment, sample collection and control, contaminated material release criteria, data management, reporting, recording, and even communications. The tools RSL has available to support these efforts will be reported. The data platform RSL will provide shall also be compatible with integration of assets and field data acquired with other DOE, National Space and Aeronautics and Space Administration (NASA), state, and local resources, personnel, and equipment. This paper also outlines the organizational structure for response elements in radiological contingency planning.

  9. Social Sensorimotor Contingencies

    OpenAIRE

    Bütepage, Judith

    2016-01-01

    As the field of robotics advances, more robots are employed in our everyday environment. Thus, the implementation of robots that can actively engage in physical collaboration and naturally interact with humans is of high importance. In order to achieve this goal, it is necessary to study human interaction and social cognition and how these aspects can be implemented in robotic agents. The theory of social sensorimotor contingencies hypothesises that many aspects of human-human interaction de...

  10. Perioperative Prophylaxis for Total Artificial Heart Transplantation.

    Science.gov (United States)

    Chambers, H E; Pelish, P; Qiu, F; Florescu, D F

    2017-11-01

    Practice variation regarding perioperative antimicrobial prophylaxis in total artificial heart transplantations (TAH-t) across institutions is unknown. The aim of our survey was to assess the current practices for prevention of infection in TAH-t recipients among different programs. An electronic survey was sent to programs that implant Syncardia TAH (Syncardia Systems, Tuscon, Ariz, USA). Proportions were analyzed for categorical variables; means and SDs were analyzed for continuous variables. The majority of centers (80.8%) had a formal surgical infection prophylaxis protocol. For non-penicillin-allergic patients, five (20.1%) institutions reported using a 4-drug regimen, seven (29.2%) used a 3-drug regimen, five (20.1%) used a 2-drug regimen, and seven (29.2%) used a cephalosporin alone. Similar data was seen in the penicillin-allergic patients. Infections were reported to occur postoperatively in 52.2% centers. During the first month after TAH-t, bacteremia represented 27.3%, driveline infections 27.2%, pulmonary infections 9%, and mediastinal infections 18.2%. The most common organisms seen within the first month were Candida spp., Escherichia coli, and Pseudomonas aeruginosa (21.4%). In 65% of centers, the mean rate of death post-TAH-t due to infection was 14.5% (SD, 22.3%). The mean rate of patients surviving until orthotopic heart transplantation was 58.6% (SD, 27.7%). Preventing infections post-TAH-t is key to decreasing morbidity and mortality. All institutions administered perioperative prophylaxis for TAH-t with significant variation among the centers. The majority of the centers have a formal perioperative prophylactic protocol. Copyright © 2017. Published by Elsevier Inc.

  11. Perceived Workforce Challenges among Clinical Social Workers in Hematopoietic Cell Transplantation Programs.

    Science.gov (United States)

    Stickney Ferguson, Stacy; Randall, Jill; Dabney, Jane; Kalbacker, Marion E; Boyle, Nancy; Thao, Viengneesee; Murphy, Elizabeth A; Denzen, Ellen M

    2018-05-01

    Clinical social workers are psychosocial care experts who provide interventions that aim to address the emotional, relational, financial, and logistical challenges that arise throughout the hematopoietic cell transplantation (HCT) treatment and recovery process. Interventions that contribute to better patient outcomes can include cognitive behavioral therapy and counseling for adaptation to illness, family planning for 24/7 caregiver availability and strategies to support patient activities of daily living, instruction on guided imagery and relaxation techniques for symptom management and to decrease anxiety, psychoeducation on the treatment trajectory, and linkage with financial resources. A Social Work Workforce Group (SWG) was established through the System Capacity Initiative, led by the National Marrow Donor Program/Be The Match, to characterize the current social work workforce capacity and challenges. The SWG conducted a web-based survey of HCT clinical social workers in the United States. The response rate was 57% (n = 90), representing 76 transplant centers. Survey results indicated that the clinical social worker role and scope of practice varies significantly between centers; less than half of respondents reported that their clinical social work expertise was used to its fullest potential. With an estimated 3-fold increase in HCT patient volume by 2020, the need for specialized psychosocial health services will increase. The SWG makes recommendations to build capacity for the psychosocial care of HCT patients and to more fully integrate the social worker as a core member of the HCT team. The SWG created a Blood and Marrow Transplant (BMT) Clinical Social Worker role description that can be used by transplant centers to educate healthcare professionals, benchmark utilization of clinical social workers, and improve comprehensive psychosocial health programs. Copyright © 2018 The American Society for Blood and Marrow Transplantation. Published by

  12. Transplante hepático pediátrico: experiência de 10 anos em um único centro no Brasil Pediatric liver transplantation: 10 years of experience at a single center in Brazil

    Directory of Open Access Journals (Sweden)

    Marta Celeste de Oliveira Mesquita

    2008-10-01

    Full Text Available OBJETIVOS: Avaliar a experiência dos primeiros 10 anos de transplante hepático em crianças e adolescentes do Serviço de Transplante Hepático do Instituto Alfa de Gastroenterologia do Hospital das Clínicas da Universidade Federal de Minas Gerais. MÉTODOS: Estudo descritivo de 84 pacientes menores de 18 anos inscritos em lista para transplante, no período de março de 1995 a janeiro de 2006, quanto às seguintes variáveis: idade, indicação do transplante, escores de gravidade (Child-Pugh, Malatack, PELD/MELD, tempo de espera em lista, complicações pós-operatórias e sobrevida. RESULTADOS: De 84 pacientes inscritos, 40 foram submetidos ao transplante, ocorrendo dois retransplantes. Vinte e seis faleceram na lista de espera. A atresia biliar foi a indicação mais freqüente. A mediana da idade no momento do transplante foi de 6,6 anos (variou de 1,9 a 16,8 anos. A mortalidade no pós-transplante foi de 32,5% (13 de 40 crianças. O tempo de espera em lista dos 40 pacientes transplantados apresentou mediana de 291 dias. As complicações relacionadas ao enxerto ocorreram em 24 dos 42 transplantes (57,1%, sendo que as vasculares representaram 30,8%, prevalecendo a trombose da artéria hepática (16,6%; episódio de rejeição aguda ocorreu em 16,6% dos casos. CONCLUSÃO: Os resultados encontrados são semelhantes ao que é observado na literatura em relação às indicações e sobrevida no pós-transplante. No entanto, houve elevada taxa de complicações não relacionadas ao enxerto e daquelas relacionadas à artéria hepática.OBJECTIVES: To evaluate the first 10 years' experience of the liver transplantation department at the Alfa Institute, Hospital das Clínicas da Universidade Federal de Minas Gerais, Brazil. METHODS: A descriptive study, based on a retrospective analysis of 84 children and adolescents enrolled on a liver transplantation waiting list, from March 1995 to January 2006, based on the following variables: age, etiology

  13. The impact of the model for end-stage liver disease (MELD on liver transplantation in one center in Brazil O impacto do MELD no transplante de fígado em um centro no Brasil

    Directory of Open Access Journals (Sweden)

    Alexandre Coutinho Teixeira de Freitas

    2010-09-01

    survival were the same: 76% and 74.6% on pre-MELD era and 75% and 70.9% on MELD era. CONCLUSION: In our center, after the introduction of MELD score as the priority criterion for liver transplantation there were an increased number of transplants with hepatocellular carcinoma. Excluding these patients, the receptors were operated upon with more advanced cirrhosis. Nevertheless the patients had the same need for red blood cells transfusion, intensive care unit and hospital stay and 3 months and 1 year survival.CONTEXTO: Atualmente o MELD é utilizado no Brasil como critério de seleção de receptores na lista de espera para transplante hepático. Esse sistema prioriza para o transplante os pacientes com cirrose hepática mais avançada. OBJETIVO: comparar os resultados do transplante hepático quando o tempo em lista de espera era o critério de alocação de órgãos (era pré-MELD em relação ao período em que se utiliza o MELD (era MELD. MÉTODOS: Foram revisados os prontuários dos pacientes submetidos a transplante hepático no Hospital de Clínicas da Universidade Federal do Paraná no período de janeiro de 2001 até agosto de 2008. Os pacientes foram divididos em dois grupos: era pré-MELD e era MELD. Foram comparados em relação aos dados demográficos dos doadores e dos receptores, à etiologia da cirrose, ao tempo de isquemia morna e fria, à presença de carcinoma hepatocelular, ao escore do MELD e ao escore e à classificação de Child-Pugh no momento do transplante, às unidades de concentrado de plaquetas transfundidas durante o transplante, ao tempo de permanência na UTI, ao tempo de permanência hospitalar e à sobrevida do paciente em 3 meses e em 1 ano. RESULTADOS: Inicialmente 205 transplantes foram avaliados. Noventa e quatro foram excluídos e 111 foram incluídos: 71 na era pré-MELD e 40 na era MELD. Os dois grupos foram semelhantes em relação à idade e ao sexo dos doadores e receptores, à etiologia da cirrose e ao tempo de isquemia morna e

  14. Associationism and cognition: human contingency learning at 25.

    Science.gov (United States)

    Shanks, David R

    2007-03-01

    A major topic within human learning, the field of contingency judgement, began to emerge about 25 years ago following publication of an article on depressive realism by Alloy and Abramson (1979). Subsequently, associationism has been the dominant theoretical framework for understanding contingency learning but this has been challenged in recent years by an alternative cognitive or inferential approach. This article outlines the key conceptual differences between these approaches and summarizes some of the main methods that have been employed to distinguish between them.

  15. [Making up tuberculosis risk groups from decreed contingents].

    Science.gov (United States)

    Kucherov, A L; Il'icheva, E Iu

    2001-01-01

    The paper provides materials to make up risk groups from decreed contingents by using the database developed and introduced in the Novomoskovsk district, as well as a programme for rapid determination of the risk of tuberculosis. This procedure reduces a scope of fluorographic surveys among the decreed contingents, as well as their expenditures by 60%. Moreover, it may be useful for professional choice in the employment of the decreed persons, which may promote a decrease in the incidence of tuberculosis among them.

  16. Delayed hyperacute rejection in a patient who developed clostridium difficile infection after ABO-incompatible kidney transplantation

    Directory of Open Access Journals (Sweden)

    Gerald S Lipshutz

    2010-11-01

    Full Text Available Gerald S Lipshutz1, Elaine F Reed2, Phuong-Chi Pham3, Jeffrey M Miller4, Jennifer S Singer5, Gabriel M Danovitch6, Alan H Wilkinson6, Dean W Wallace7, Suzanne McGuire6, Phuong-Truc Pham8, Phuong-Thu Pham61Department of Surgery, Kidney and Pancreas Transplant Program, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA; 2Department of Pathology and Laboratory Medicine-Immunogenetics, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA; 3Department of Medicine, Nephrology Division, UCLA-Olive View Medical Center, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA; 4Department of Medicine, Hematology Oncology Division, UCLA-Olive View Medical Center, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA; 5Department of Surgery and Urology, Kidney and Pancreas Transplant Program, 6Department of Medicine, Nephrology Division, Kidney and Pancreas Transplant Program, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA; 7Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA; 8Department of Science, Penn State University, Worthington-Scranton, Dunmore, PA, USAAbstract: Over the past decade ABO incompatible transplantation has emerged as an important potential source for increasing living kidney transplantation in selected transplant centers. Early reports suggest that patients who have elevated serum anti-blood group antibody titers (anti-A/B before transplantation and a rebound antibody production after antibody removal may be at high immunological risk. With currently available immune modulation protocols and immunosuppressive therapy, excellent short- and long-term patient and graft survival rates have been achieved even in those with high anti-A/B antibody titers before plasmapheresis or immunoadsorption. Nonetheless, acute infection with an organism possessing surface markers analogous to blood group antigens such as carbohydrate structures on

  17. Estimating demand and unmet need for allogeneic hematopoietic cell transplantation in the United States using geographic information systems.

    Science.gov (United States)

    Besse, Kelsey L; Preussler, Jaime M; Murphy, Elizabeth A; Denzen, Ellen M; Lill, Michael C; Chell, Jeffrey W; Senneka, Mary K; Majhail, Navneet S; Williams, Eric P

    2015-03-01

    Allogeneic hematopoietic cell transplantation (HCT) is an increasingly used therapy for many patients with hematologic malignancies and other marrow failure or immune system disorders. The purpose of this study was to quantify and visualize both the demand and unmet need for HCT. HCT use for 2012 was described using the Center for International Blood and Marrow Transplant Research registry. Potential demand for HCT was calculated using 2012 SEER data and published literature for HCT-treatable conditions. Point locations of transplant centers were geocoded using geographic information system (GIS) software; Thiessen polygons were created to establish adult (age 20 to 74 years) and pediatric (age 0 to 19 years) market areas. Market-area population estimates were calculated using 2012 population estimates by age aggregated by census block. US market areas for HCTs were identified separately for transplant centers treating adult (n = 62) and pediatric patients (n = 52). Overall HCT demand among adults was 16,096, with an unmet need for HCTs of 10,276 patients. For pediatric patients, the total demand was 4,561, with an unmet need of 3,213 potential recipients. Evaluation of adult and pediatric market areas indicated that the largest unmet needs tended to be in areas with large populations. Market-area maps and statistics developed using GIS will help communicate the unmet need for HCT, inform policy, and assist transplant centers in planning for the anticipated growth in HCT use. Copyright © 2015 by American Society of Clinical Oncology.

  18. The effective application of contingency theory in health settings: problems and recommended solutions.

    Science.gov (United States)

    Strasser, S

    1983-01-01

    Contingency theory as a managerial perspective is conceptually elegant, but it may cause a number of unforeseen problems when applied in real work settings. Health care administrators can avoid many of these problems by using a hybrid contingency theory framework that blends the manager's own perceptions and experience with established contingency models.

  19. Allogeneic hematopoietic stem-cell transplantation for leukocyte adhesion deficiency

    DEFF Research Database (Denmark)

    Qasim, Waseem; Cavazzana-Calvo, Marina; Davies, E Graham

    2009-01-01

    OBJECTIVES: Leukocyte adhesion deficiency is a rare primary immune disorder caused by defects of the CD18 beta-integrin molecule on immune cells. The condition usually presents in early infancy and is characterized by deep tissue infections, leukocytosis with impaired formation of pus, and delayed...... of leukocyte adhesion deficiency who underwent hematopoietic stem-cell transplantation between 1993 and 2007 was retrospectively analyzed. Data were collected by the registries of the European Society for Immunodeficiencies/European Group for Blood and Marrow Transplantation, and the Center for International......, with full donor engraftment in 17 cases, mixed multilineage chimerism in 7 patients, and mononuclear cell-restricted chimerism in an additional 3 cases. CONCLUSIONS: Hematopoietic stem-cell transplantation offers long-term benefit in leukocyte adhesion deficiency and should be considered as an early...

  20. Breakdown concepts for contingency tables

    NARCIS (Netherlands)

    Kuhnt, S.

    2010-01-01

    Loglinear Poisson models are commonly used to analyse contingency tables. So far, robustness of parameter estimators as well as outlier detection have rarely been treated in this context. We start with finite-sample breakdown points. We yield that the breakdown point of mean value estimators

  1. Job satisfaction and contingent employment

    NARCIS (Netherlands)

    de Graaf-Zijl, M.

    2012-01-01

    This paper analyses job satisfaction as an aggregate of satisfaction with several job aspects, with special focus on the influence of contingent-employment contracts. Fixed-effect analysis is applied on a longitudinal sample of Dutch employees in four work arrangements: regular, fixed-term, on-call

  2. Baseline Response Levels Are a Nuisance in Infant Contingency Learning

    Science.gov (United States)

    Millar, W. S.; Weir, Catherine

    2015-01-01

    The impact of differences in level of baseline responding on contingency learning in the first year was examined by considering the response acquisition of infants classified into baseline response quartiles. Whereas the three lower baseline groups showed the predicted increment in responding to a contingency, the highest baseline responders did…

  3. Body Image Concerns and Contingent Self-Esteem in Male and Female College Students.

    Science.gov (United States)

    Grossbard, Joel R; Lee, Christine M; Neighbors, Clayton; Larimer, Mary E

    2009-02-01

    Body dissatisfaction in females, and to a lesser extent males, is associated with low self-esteem, depression, and eating disorders. This research examined gender as a moderator of the association between contingent self-esteem and body image concerns, including weight and muscularity. Participants included 359 (59.1% female) heavy drinking first-year U.S. undergraduate students who completed a survey assessing health-related risk behaviors. Hierarchical multiple regression was used to examine relations among gender, contingent self-esteem, and body image. Females reported higher levels of contingent self-esteem and greater concerns about their weight, although males reported a greater drive for muscularity. The relationship between contingent self-esteem and weight concerns was stronger among females, and for males, greater contingent self-esteem was associated with a greater drive for muscularity.

  4. Wind Turbine Contingency Control Through Generator De-Rating

    Science.gov (United States)

    Frost, Susan; Goebel, Kai; Balas, Mark

    2013-01-01

    Maximizing turbine up-time and reducing maintenance costs are key technology drivers for wind turbine operators. Components within wind turbines are subject to considerable stresses due to unpredictable environmental conditions resulting from rapidly changing local dynamics. In that context, systems health management has the aim to assess the state-of-health of components within a wind turbine, to estimate remaining life, and to aid in autonomous decision-making to minimize damage to the turbine. Advanced contingency control is one way to enable autonomous decision-making by providing the mechanism to enable safe and efficient turbine operation. The work reported herein explores the integration of condition monitoring of wind turbines with contingency control to balance the trade-offs between maintaining system health and energy capture. The contingency control involves de-rating the generator operating point to achieve reduced loads on the wind turbine. Results are demonstrated using a high fidelity simulator of a utility-scale wind turbine.

  5. Contingency table analysis methods and implementation using R

    CERN Document Server

    Kateri, Maria

    2014-01-01

    Combining theory and applications, this book presents models and methods for the analysis of two‐ and multi‐dimensional contingency tables. The author uses a threefold approach: fundamental models and related inferences are presented, their interpretational aspects are highlighted, and their practical usefulness is demonstrated. Throughout, practical guidance for using R is provided along with a comprehensive R-functions web-appendix.   Contingency tables arise in diverse fields, including the life, pedagogic, social and political sciences. They also play a prominent role in market research and opinion surveys. The analysis of contingency tables can provide insight into essential structures, relevant quantities and their interactions, and thus leads to improved decision-making.   Special features include:   ·         A motivating example for each topic ·         Applications and implementations in R for all models discussed ·         Emphasis on association and symmetry model...

  6. NextGen Flight Deck Surface Trajectory-Based Operations (STBO): Contingency Holds

    Science.gov (United States)

    Bakowski, Deborah Lee; Hooey, Becky Lee; Foyle, David C.; Wolter, Cynthia A.; Cheng, Lara W. S.

    2013-01-01

    The purpose of this pilot-in-the-loop taxi simulation was to investigate a NextGen Surface Trajectory-Based Operations (STBO) concept called "contingency holds." The contingency-hold concept parses a taxi route into segments, allowing an air traffic control (ATC) surface traffic management (STM) system to hold an aircraft when necessary for safety. Under nominal conditions, if the intersection or active runway crossing is clear, the hold is removed, allowing the aircraft to continue taxiing without slowing, thus improving taxi efficiency, while minimizing the excessive brake use, fuel burn, and emissions associated with stop-and-go taxi. However, when a potential traffic conflict exists, the hold remains in place as a fail-safe mechanism. In this departure operations simulation, the taxi clearance included a required time of arrival (RTA) to a specified intersection. The flight deck was equipped with speed-guidance avionics to aid the pilot in safely meeting the RTA. On two trials, the contingency hold was not released, and pilots were required to stop. On two trials the contingency hold was released 15 sec prior to the RTA, and on two trials the contingency hold was released 30 sec prior to the RTA. When the hold remained in place, all pilots complied with the hold. Results also showed that when the hold was released at 15-sec or 30-sec prior to the RTA, the 30-sec release allowed pilots to maintain nominal taxi speed, thus supporting continuous traffic flow; whereas, the 15-sec release did not. The contingency-hold concept, with at least a 30-sec release, allows pilots to improve taxiing efficiency by reducing braking, slowing, and stopping, but still maintains safety in that no pilots "busted" the clearance holds. Overall, the evidence suggests that the contingency-hold concept is a viable concept for optimizing efficiency while maintaining safety.

  7. Contingency planning for nuclear plants: an approach for use in industrial plants and hazardous products storage facilities

    Energy Technology Data Exchange (ETDEWEB)

    Carvalho, Paulo Roberto Werneck de, E-mail: paulo@pwerneck.com [Universidade Federal Fluminense (UFF), Angra dos Reis, RJ (Brazil); Hora, Antonio Ferreira da, E-mail: dahora@vm.uff.br [Universidade Federal Fluminense (UFF), Niteroi, RJ (Brazil)

    2015-07-01

    The purpose of this paper is establishing a basic system model for the development of contingency plans for emergencies. This includes the identification of agents involved in aid and assistance planning, pointing out communication chains among them, the delegation of action coordination and control, as well as the composition and structure of crisis centers equipped with physical and technological resources, the development of emergency procedures, the training of the teams involved, drill planning, and a policy for interactions with community members and the media in the course of a crisis. This paper aims at proposing actions in case an emergency affects the surroundings areas to the accident site. The outlined propositions are not to be adopted only under nuclear or radiological emergencies, since Brazil has specific legislation for this purpose, as established in the Brazilian Nuclear Program Protection System (SIPRON), in addition to the structures and contingency plans currently implemented, validated and periodically tested. (author)

  8. Contingency planning for nuclear plants: an approach for use in industrial plants and hazardous products storage facilities

    International Nuclear Information System (INIS)

    Carvalho, Paulo Roberto Werneck de; Hora, Antonio Ferreira da

    2015-01-01

    The purpose of this paper is establishing a basic system model for the development of contingency plans for emergencies. This includes the identification of agents involved in aid and assistance planning, pointing out communication chains among them, the delegation of action coordination and control, as well as the composition and structure of crisis centers equipped with physical and technological resources, the development of emergency procedures, the training of the teams involved, drill planning, and a policy for interactions with community members and the media in the course of a crisis. This paper aims at proposing actions in case an emergency affects the surroundings areas to the accident site. The outlined propositions are not to be adopted only under nuclear or radiological emergencies, since Brazil has specific legislation for this purpose, as established in the Brazilian Nuclear Program Protection System (SIPRON), in addition to the structures and contingency plans currently implemented, validated and periodically tested. (author)

  9. Economics and Outcome After Hematopoietic Stem Cell Transplantation: A Retrospective Cohort Study

    Directory of Open Access Journals (Sweden)

    Alois Gratwohl

    2015-12-01

    Full Text Available Hematopoietic stem cell transplantation (HSCT is a lifesaving expensive medical procedure. Hence, more transplants are performed in more affluent countries. The impact of economic factors on patient outcome is less defined. We analyzed retrospectively a defined cohort of 102,549 patients treated with an allogeneic (N = 37,542; 37% or autologous (N = 65,007; 63% HSCT. They were transplanted by one of 404 HSCT centers in 25 European countries between 1999 and 2006. We searched for associations between center-specific microeconomic or country-specific macroeconomic factors and outcome. Center patient-volume and center program-duration were significantly and systematically associated with improved survival after allogeneic HSCT (HR 0·87; 0·84–0·91 per 10 patients; p < 0·0001; HR 0·90;0·85–0·90 per 10 years; p < 0·001 and autologous HSCT (HR 0·91;0·87–0·96 per 10 patients; p < 0·001; HR 0·93;0·87–0·99 per 10 years; p = 0·02. The product of Health Care Expenditures by Gross National Income/capita was significantly associated in multivariate analysis with all endpoints (R2 = 18%; for relapse free survival after allogeneic HSCT. Data indicate that country- and center-specific economic factors are associated with distinct, significant, systematic, and clinically relevant effects on survival after HSCT. They impact on center expertise in long-term disease and complication management. It is likely that these findings apply to other forms of complex treatments.

  10. New Partnership Seeks to Increase Availability of Lifesaving Transplants | FNLCR

    Science.gov (United States)

    The Frederick National Laboratory for Cancer Research has entered into a new partnership with Fred Hutchinson Cancer Research Center that if successful, could improve current methods of donor selection and thereby make lifesaving transplant procedure

  11. Contingencies and metacontingencies: Toward a synthesis of behavior analysis and cultural materialism

    Science.gov (United States)

    Glenn, Sigrid S.

    1988-01-01

    A synthesis of cultural materialism and behavior analysis might increase the scientific and technological value of both fields. Conceptual and substantive relations between the two fields show important similarities, particularly with regard to the causal role of the environment in behavioral and cultural evolution. Key concepts in Marvin Harris's cultural materialist theories are outlined. A distinction is made between contingencies at the behavioral level of analysis (contingencies of reinforcement) and contingencies at the cultural level of analysis (metacontingencies). Relations between the two kinds of contingencies are explored in cultural practices from paleolithic to industrial sociocultural systems. A synthesis of these two fields may offer the opportunity to resolve serious problems currently facing modern cultures. PMID:22478011

  12. The Contingent Unknowability of Facts and its Relation with Informal, Epistemological Contexts

    Directory of Open Access Journals (Sweden)

    Stanley Kreiter Bezerra Medeiros

    2017-11-01

    Full Text Available This paper focuses on elements that are involved in a specific type of judgment, namely, those involving facts that, in virtue of contingent reasons, are out of our epistemic reach. Its goal is to propose a philosophical explanation about why we, in informal contexts, take some facts as contingently unknowable. In order to accomplish that goal, we develop a theory that defines contingently unknowable facts in a very specific way. We establish three clauses that are jointly necessary and sufficient — so we argue — for taking an arbitrary fact as contingently unknowable. In a variety of contexts, this strategy has the potential of reducing efforts in an epistemological analysis of this particular type of unknowability.

  13. Negotiating contingent knowledges in a time of epistemic doubt

    DEFF Research Database (Denmark)

    Phillips, Louise Jane

    How can/should we produce and communicate social scientific knowledge with authority under conditions of epistemic doubt? If all knowledge is contingent and if truth is a discursive effect rather than the final claim about reality - as post-foundationalism suggests - how can we formulate...... and provide support for contingent knowledge-claims? And how can the communication of social scientificknowlege be theorised and practised as the negotiation between social scientific knowledge and other forms of contingent knowledge rather than the one-way transmission of universal, value-free truth......-claims? In the paper, I outline an approach to addressing the final question. The approach is based on a combination of approaches to the production of knowledge developed in post-foundationalist sociology and philosophy of science, approaches to the communication of knowlege developed within communication studies...

  14. BMT Roadmap: A User-Centered Design Health Information Technology Tool to Promote Patient-Centered Care in Pediatric Hematopoietic Cell Transplantation.

    Science.gov (United States)

    Runaas, Lyndsey; Hanauer, David; Maher, Molly; Bischoff, Evan; Fauer, Alex; Hoang, Tiffany; Munaco, Anna; Sankaran, Roshun; Gupta, Rahael; Seyedsalehi, Sajjad; Cohn, Amy; An, Larry; Tewari, Muneesh; Choi, Sung Won

    2017-05-01

    Health information technology (HIT) has great potential for increasing patient engagement. Pediatric hematopoietic cell transplantation (HCT) is a setting ripe for using HIT but in which little research exists. "BMT Roadmap" is a web-based application that integrates patient-specific information and includes several domains: laboratory results, medications, clinical trial details, photos of the healthcare team, trajectory of transplant process, and discharge checklist. BMT Roadmap was provided to 10 caregivers of patients undergoing first-time HCT. Research assistants performed weekly qualitative interviews throughout the patient's hospitalization and at discharge and day 100 to assess the impact of BMT Roadmap. Rigorous thematic analysis revealed 5 recurrent themes: emotional impact of the HCT process itself; critical importance of communication among patients, caregivers, and healthcare providers; ways in which BMT Roadmap was helpful during inpatient setting; suggestions for improving BMT Roadmap; and other strategies for organization and management of complex healthcare needs that could be incorporated into BMT Roadmap. Caregivers found the tool useful and easy to use, leading them to want even greater access to information. BMT Roadmap was feasible, with no disruption to inpatient care. Although this initial study is limited by the small sample size and single-institution experience, these initial findings are encouraging and support further investigation. Copyright © 2017 The American Society for Blood and Marrow Transplantation. Published by Elsevier Inc. All rights reserved.

  15. On-Shore Pipeline Emergency Repair Center; Centro de Reparos Emergenciais de Dutos Terrestres

    Energy Technology Data Exchange (ETDEWEB)

    Souza Filho, Byron Goncalves de [TRANSPETRO - PETROBRAS Transportes, Rio de Janeiro, RJ (Brazil)

    2003-07-01

    After the accidents happened on years 2000 and 2001, in TRANSPETRO's operated pipelines, appeared a common conscientiousness about the necessity for the creation of a basic infrastructure for emergency and contingency pipeline repair that centralize equipment, procedures and technologies applied to pipeline maintenance. Then, it was planned the creation of the On-Shore Pipeline Emergency Center (CRE-DUT), following the model of the Off-Shore Pipelines Repair Group from PETROBRAS/EP, (Exploration and Production) and other similar centers of pipeline transport companies worldwide (Canada, Colombia, Mexico, Argentina). The CRE-DUT has the Mission of offering contingency; emergency and specials on-shore pipelines repair services, with safety, quality and at the less possible time, seeking for the leadership on applying new technologies and the excellency in repair activities. (author)

  16. Task-Contingent Conscientiousness as a Unit of Personality at Work

    Science.gov (United States)

    Minbashian, Amirali; Wood, Robert E.; Beckmann, Nadin

    2010-01-01

    The present study examined the viability of incorporating task-contingent units into the study of personality at work, using conscientiousness as an illustrative example. We used experience-sampling data from 123 managers to show that (a) momentary conscientiousness at work is contingent on the difficulty and urgency demands of the tasks people…

  17. A perspective on the selection of unrelated donors and cord blood units for transplantation

    Science.gov (United States)

    Spellman, Stephen R.; Eapen, Mary; Logan, Brent R.; Mueller, Carlheinz; Rubinstein, Pablo; Setterholm, Michelle I.; Woolfrey, Ann E.; Confer, Dennis L.; Hurley, Carolyn K.

    2012-01-01

    Selection of a suitable graft for allogeneic hematopoietic stem cell transplantation involves consideration of both donor and recipient characteristics. Of primary importance is sufficient donor-recipient HLA matching to ensure engraftment and acceptable rates of GVHD. In this Perspective, the National Marrow Donor Program and the Center for International Blood and Marrow Transplant Research provide guidelines, based on large studies correlating graft characteristics with clinical transplantation outcomes, on appropriate typing strategies and matching criteria for unrelated adult donor and cord blood graft selection. PMID:22596257

  18. How Precarious Is Contingent Work?

    DEFF Research Database (Denmark)

    Scheuer, Steen

    2015-01-01

    agree. This study focuses on a number of non-pay conditions for contingent employees, compared to permanent staff, under the assumption that these conditions are cumulatively negative. The article is based on utilizes a survey of app.4,900 employees (response rate 57%), asking questions concerning...

  19. Transplant tourism and invasive fungal infection

    Directory of Open Access Journals (Sweden)

    I. Al Salmi

    2018-04-01

    Full Text Available Background: Deceased and live-related renal transplants (RTXs are approved procedures that are performed widely throughout the world. In certain regions, commercial RTX has become popular, driven by financial greed. Methods: This retrospective, descriptive study was performed at the Royal Hospital from 2013 to 2015. Data were collected from the national kidney transplant registry of Oman. All transplant cases retrieved were divided into two groups: live-related RTX performed in Oman and commercial-unrelated RTX performed abroad. These groups were then divided again into those with and without evidence of fungal infection, either in the wound or renal graft. Results: A total of 198 RTX patients were identified, of whom 162 (81.8% had undergone a commercial RTX that was done abroad. Invasive fungal infections (IFIs were diagnosed in 8% of patients who had undergone a commercial RTX; of these patients, 76.9% underwent a nephrectomy and 23.1% continued with a functioning graft. None of the patients with RTXs performed at the Royal Hospital contracted an IFI. The most common fungal isolates were Aspergillus species (including Aspergillus flavus, Aspergillus fumigatus, Aspergillus nidulans, and Aspergillus nigricans, followed by Zygomycetes. However, there was no evidence of fungal infection including Aspergillus outside the graft site. Computed tomography (CT findings showed infarction of the graft, renal artery thrombosis, aneurysmal dilatation of the external iliac artery, fungal ball, or just the presence of a perigraft collection. Of the total patients with IFIs, 23.1% died due to septic shock and 53.8% were alive and on hemodialysis. The remaining 23.1% who did not undergo nephrectomy demonstrated acceptable graft function. Conclusions: This is the largest single-center study on commercial RTX reporting the highest number of patients with IFI acquired over a relatively short period of time. Aspergillus spp were the main culprit fungi, with no

  20. Why are cadaveric renal transplants so hard to find in Japan? An analysis of economic and attitudinal aspects.

    Science.gov (United States)

    Ohi, G; Hasegawa, T; Kumano, H; Kai, I; Takenaga, N; Taguchi, Y; Saito, H; Ino, T

    1986-01-01

    In view of the fact that in Japan treatment of end-stage renal disease depends disproportionately heavily on hemodialysis and almost negligible on transplants from cadaveric donors (hemodialysis 44.4/100,000; renal transplants 0.31/100,000 per year; cadaveric renal transplants 0.11/100,000 per year (1983 data)), we analysed the cost-effectiveness of hemodialysis and renal transplantation, predicted economic gains under expected changes in variables and described attitudes of the Japanese hampering cadaveric renal transplantation. Adjusted life expectancy of transplant recipients (live and cadaveric combined) under the current technical conditions is longer than that of those on hemodialysis (18.3 vs. 14.7 years) and the cost per year for maintaining the transplant is approximately one third of hemodialysis ($12,000 vs $32,000). If the proportion of cadaveric transplant recipients would increase to the levels of the USA (hemodialysis 30.8/100,000; transplants 2.6/100,000 per year; cadaveric transplants 1.9/100,000 per year (1983 data)) along with improvement in graft survival rate, the life expectancy for transplant recipients in Japan could increase by 2 years, thus reducing the annual cost even further. The current number of patients starting hemodialysis (11,500 cases per year) coupled with their life expectancy predicts the number of patients on hemodialysis to reach equilibrium at around 174,000 in a decade (Japanese population 110 million). Based on current price, their annual cost will be about 5.3 billion dollars. Medical expenditure of this magnitude for such a small fraction of people is expected to become an increasingly strong economic incentive for cadaveric renal transplantation. A review of studies on Japanese attitudes toward cadaveric renal transplantation in both urban and rural areas shows that approximately 60% are in favor of donating their kidney after death, though with the majority of cases the donation is contingent upon agreement of their

  1. Successful Pregnancies Post Renal Transplantation

    Directory of Open Access Journals (Sweden)

    Alfi Adnan

    2008-01-01

    Full Text Available To evaluate the maternal and fetal outcomes in renal transplant female recipients who became pregnant from 1989 to 2005 in our center, we retrospectively studied 20 incident pregnancies in 12 renal transplant recipients; 5 (41.7 % of them from living related, 4 (33.3% from deceased, and 3 (25% from living unrelated donors. The mean age at pregnancy was 30.5 ± 4.5 years and mean interval from transplantation to pregnancy was 21 ± 5.7 months with the interval was < 1 year in one patient. The mean serum creatinine (SCr before pregnancy vs 6 months post delivery was 110 ± 24.3, and 156 ± 190 µmol/ L, respectively, (p = 0.2. All patients were normotensive during the prenatal period except two who were hypertensive, none was markedly proteinuric, and only one acute rejection episode occurred during one pregnancy. Graft loss one year post delivery occurred in 2 patients; one with elevated prenatal SCr > 132 µmol/L, and another with short interval from transplantation to pregnancy < 1 year, while the remaining 10 patients revealed current mean SCr of 105 ± 18.2 µmol/L. Complications during pregnancy inclu-ded pre-eclampsia in (25%, UTI (25%, preterm delivery < 37 weeks (30%, however, none of the pregnancies ended by abortion. Normal vaginal delivery vs cesarean section was 70% vs 30%, respectively. Gestational age at delivery was 36.3 ± 3.9 weeks, and mean fetal birth weight was 2349 ± 574 gm. Apgar score was 9-10 in all of the 20 babies, and none revealed intrauterine growth retardation or congenital anomalies. We conclude that consecutive pregnancies demons-trate long-term maternal and fetal survival and function. The major risk factors are elevated starting serum creatinine, hypertension, and short time interval from transplantation to pregnancy.

  2. [Contraception and pregnancy after liver transplantation: an update overview].

    Science.gov (United States)

    Parolin, Mônica Beatriz; Coelho, Júlio Cezar Uili; Urbanetz, Almir Antônio; Pampuch, Melina

    2009-01-01

    Successful liver transplantation not only treats the underlying liver disease but also restores libido and fertility in female recipients. Although reports of successful pregnancy after liver transplantation continue to increase, these pregnancies are considered of high-risk because they are associated with increase maternofetal morbidity. A MEDLINE search (1978-2007) was conducted using the terms 'liver transplantation', 'pregnancy', 'immunosuppressive agents', 'sexual function'. Reviews, retrospective series, long-term clinical follow-up of case series and original articles containing basic scientific observations were included. Although no formal guidelines have been established there are some 'golden rules' to improve the probability of favorable maternal and fetal outcome. Most transplant centers recommend to delay pregnancy for at least 1-year after transplantation. The recipient should be on a stable immunosuppression regimen, with good graft function and no evidence of renal dysfunction or uncontrolled arterial hypertension. Considering the increased incidence of prematurity, low birth weight, hypertension and preeclampsia reported during pregnancy post-LT, these high-risk patients should be managed by a multidisciplinary team, including an obstetrician specialized in high-risk pregnancies. Carefully monitoring of immunosuppressive drugs serum level is prudent to avoid graft rejection episodes and drugs with teratogenic potential should be discontinued. Breastfeeding is usually not recommended. Successful pregnancies are the rule after liver transplantation. A carefully monitoring by an experience multidisciplinary team increases the chances of favorable maternofetal outcome.

  3. Exploring the Effect of Parathyroidectomy for Tertiary Hyperparathyroidism After Kidney Transplantation

    Science.gov (United States)

    Kandil, Emad; Florman, Sandy; Alabbas, Haythem; Abdullah, Obai; McGee, Jennifer; Noureldine, Salem; Slakey, Douglas; Zhang, Rubin

    2010-01-01

    Tertiary hyperparathyroidism (tHPT) usually regresses after renal transplantation. Persistent tHPT after successful renal transplantation may require parathyroidectomy (PTX). PTX has been reported to be associated with deterioration of renal function and graft survival. We retrospectively analyzed 794 kidney transplants performed at our center with at least 3 years of follow-up to examine the effect of PTX on the renal function and graft survival. Forty-nine of the 794 renal transplant recipients were diagnosed with hyperparathyroidism (HPT) before transplant. Nineteen of 49 patients had persistent tHPT and underwent PTX after kidney transplants. Patients with HPT and non-HPT had similar 3-year graft survival (88% versus 84%, P = 0.51). PTX was associated with a decreased glomerular filtration rate at 3 years (44.7 ± 20.0 versus 57.7 ± 23.7 mL/min, P = 0.04); however, there was no statistical difference in the 3-year graft survival (71% versus 88%, P = 0.06). PTX in renal transplant recipients seems to be a safe and effective therapy for persistent tHPT. PTX may be associated with worsening glomerular filtration rate, but it may not be associated with significantly decreased long-term graft survival. PMID:20234299

  4. Defining kidney allograft benefit from successful pancreas transplant: separating fact from fiction.

    Science.gov (United States)

    Wiseman, Alexander C; Stites, Erik; Kennealey, Peter

    2018-06-06

    To define the natural history of kidney allograft loss related to recurrent diabetes following transplant, and to understand the potential benefit of pancreas transplantation upon kidney allograft survival. A postulated benefit of simultaneous pancreas kidney transplant is that, unlike kidney transplant alone, euglycemia from the added pancreas allograft may confer a nephroprotective benefit and prevent recurrent diabetic nephropathy in the renal allograft. Recent large database analyses and long-term histological assessments have been published that assist in quantifying the problem of recurrent diabetic nephropathy and answering the question of the potential benefits of euglycemia. Further data may be extrapolated from larger single-center series that follow the prognosis of early posttransplant diabetes mellitus as another barometer of risk from diabetic nephropathy and graft loss. Recurrent diabetic nephropathy following kidney transplant is a relatively rare, late occurrence and its clinical significance is significantly diminished by the competing risks of death and chronic alloimmune injury. Although there are hints of a protective effect upon kidney graft survival with pancreas transplant, these improvements are small and may take decades to appreciate. Clinical decision-making regarding pancreas transplant solely based upon nephroprotective effects of the kidney allograft should be avoided.

  5. Effects of Individual and Group Contingency Interventions on Attendance in Adolescent Part-Time Employees

    Science.gov (United States)

    Berkovits, Shira Melody; Sturmey, Peter; Alvero, Alicia M.

    2012-01-01

    This study examined the effects of individual and group monetary contingencies on the attendance of adolescent part-time employees. Attendance increased in both individual and group contingency phases; however staff questionnaire responses indicated a preference for the individual contingencies. Future research should consider staff acceptability…

  6. 78 FR 53113 - Approval and Promulgation of Implementation Plans; California; San Joaquin Valley; Contingency...

    Science.gov (United States)

    2013-08-28

    ...] Approval and Promulgation of Implementation Plans; California; San Joaquin Valley; Contingency Measures for... California to address Clean Air Act nonattainment area contingency measure requirements for the 1997 annual... Air Act Requirements for Contingency Measures III. Review of the Submitted San Joaquin Valley PM 2.5...

  7. Long-term use of amiodarone before heart transplantation significantly reduces early post-transplant atrial fibrillation and is not associated with increased mortality after heart transplantation

    Directory of Open Access Journals (Sweden)

    Rivinius R

    2016-02-01

    Full Text Available Rasmus Rivinius,1 Matthias Helmschrott,1 Arjang Ruhparwar,2 Bastian Schmack,2 Christian Erbel,1 Christian A Gleissner,1 Mohammadreza Akhavanpoor,1 Lutz Frankenstein,1 Fabrice F Darche,1 Patrick A Schweizer,1 Dierk Thomas,1 Philipp Ehlermann,1 Tom Bruckner,3 Hugo A Katus,1 Andreas O Doesch1 1Department of Cardiology, Angiology and Pneumology, 2Department of Cardiac Surgery, Heidelberg University Hospital, 3Institute for Medical Biometry and Informatics, University of Heidelberg, Heidelberg, Germany Background: Amiodarone is a frequently used antiarrhythmic drug in patients with end-stage heart failure. Given its long half-life, pre-transplant use of amiodarone has been controversially discussed, with divergent results regarding morbidity and mortality after heart transplantation (HTX.Aim: The aim of this study was to investigate the effects of long-term use of amiodarone before HTX on early post-transplant atrial fibrillation (AF and mortality after HTX.Methods: Five hundred and thirty patients (age ≥18 years receiving HTX between June 1989 and December 2012 were included in this retrospective single-center study. Patients with long-term use of amiodarone before HTX (≥1 year were compared to those without long-term use (none or <1 year of amiodarone. Primary outcomes were early post-transplant AF and mortality after HTX. The Kaplan–Meier estimator using log-rank tests was applied for freedom from early post-transplant AF and survival.Results: Of the 530 patients, 74 (14.0% received long-term amiodarone therapy, with a mean duration of 32.3±26.3 months. Mean daily dose was 223.0±75.0 mg. Indications included AF, Wolff–Parkinson–White syndrome, ventricular tachycardia, and ventricular fibrillation. Patients with long-term use of amiodarone before HTX had significantly lower rates of early post-transplant AF (P=0.0105. Further, Kaplan–Meier analysis of freedom from early post-transplant AF showed significantly lower rates of AF in this

  8. Transplant Tourism Following the Declaration of Istanbul: Poor Outcomes and Nephrologist Dilemma.

    Science.gov (United States)

    AlBugami, Meteb M; AlOtaibe, Fahad E; AlAbadi, Abdulnaser M; Hamawi, Khaled; Bel'eed-Akkari, Khalid

    2017-10-14

    Transplant tourism (TT) violates many international laws and documents. Despite all efforts, TT seems to be increasing. The aim of this study is to review outcomes of recipients of commercially transplanted kidneys since the Declaration of Istanbul. All recipients of kidney transplantation done abroad and then returned to our center, from September 2008 to December 2015, were included (tourists). Demographics and outcomes were collected from patients' charts. All data were compared with all recipients of living donor kidney transplants done at our center (locals). A total of 86 tourists and 365 locals were included. Both groups had similar age and gender. Re-grafting rates were the same, however, more preemptive transplants were done abroad. TT was increasing over time. Tourists presented early after TT, median 17.5 (IQR 7 - 30) days, and 47.7% were encountered initially in the emergency department. 1-year graft and patient survivals were significantly lower among tourists compared with locals (87.2% vs. 98.0%, P<0.001 and 90.7% vs. 98.0%, P<0.001, respectively). Tourists had a significantly higher rate of acute cellular rejection (19.8% vs. 7.1%, P<0.001), and they sustained significantly higher rates of serious viral, bacterial and fungal infections compared with the locals. TT seems to be increasing despite international condemnation and efforts to stop it. Outcomes are significantly worse when compared to local transplant recipients. Concerted effort is needed to better inform patients about the ethical and physical harms related to TT, and to point them towards ethically sound and medically safer alternatives. This article is protected by copyright. All rights reserved.

  9. 48 CFR 2132.770 - Insurance premium payments and special contingency reserve.

    Science.gov (United States)

    2010-10-01

    ... 48 Federal Acquisition Regulations System 6 2010-10-01 2010-10-01 true Insurance premium payments... GENERAL CONTRACTING REQUIREMENTS CONTRACT FINANCING Contract Funding 2132.770 Insurance premium payments and special contingency reserve. Insurance premium payments and a special contingency reserve are made...

  10. Hematopoietic stem cell transplantation in sickle cell disease: patient selection and special considerations

    Directory of Open Access Journals (Sweden)

    Bhatia M

    2015-07-01

    Full Text Available Monica Bhatia,1 Sujit Sheth21Division of Pediatric Hematology/Oncology/Stem Cell Transplantation, Columbia University Medical Center, 2Division of Pediatric Hematology and Oncology, Weill Cornell Medical College, New York, NY, USAAbstract: Hematopoietic stem cell transplantation remains the only curative treatment currently in use for patients with sickle cell disease (SCD. The first successful hematopoietic stem cell transplantation was performed in 1984. To date, approximately 1,200 transplants have been reported. Given the high prevalence of this disorder in Africa, and its emergence in the developed world through immigration, this number is relatively small. There are many reasons for this; primary among them are the availability of a donor, the risks associated with this complex procedure, and the cost and availability of resources in the developing world. Of these, it is fair to say that the risks associated with the procedure have steadily decreased to the point where, if currently performed in a center with experience using a matched sibling donor, overall survival is close to 100% and event-free survival is over 90%. While there is little controversy around offering hematopoietic stem cell transplantation to symptomatic SCD patients with a matched sibling donor, there is much debate surrounding the use of this modality in “less severe” patients. An overview of the current state of our understanding of the pathology and treatment of SCD is important to show that our current strategy is not having the desired impact on survival of homozygous SCD patients, and should be changed to significantly impact the small proportion of these patients who have matched siblings and could be cured, especially those without overt clinical manifestations. Both patient families and providers must be made to understand the progressive nature of SCD, and should be encouraged to screen full siblings of patients with homozygous SCD for their potential to

  11. Organ donation and transplantation statistics in Belgium for 2012 and 2013.

    Science.gov (United States)

    Desschans, B; Evrard, P

    2014-11-01

    The 2012 and 2013 solid organ transplantation statistics were presented during the annual mee