WorldWideScience

Sample records for calculi

  1. Vaginal calculi in the dolphin.

    Science.gov (United States)

    Sawyer, J E; Walker, W A

    1977-10-01

    Examination of the reproductive tract of a mature spotted dolphin, Stenella attenuata , revealed 13 vaginal calculi, composed primarily of calcium phosphate compounds. Vaginal calculi also were found in two mature Lagenorhynchus obliquidens and in six mature Delphinus delphis . PMID:24228951

  2. Lambda Calculi: A Guide

    Science.gov (United States)

    Hankin, Chris

    One of the universal notions of programming languages is functional abstraction. The methods of Java and the functions defined and used in functional programming languages, such as Haskell, are instances of this general notion. The inspiration for this form of abstraction mechanism comes from Mathematical Logic; notably Church's λ(lambda)-calculi and Schönfinkel's and Curry's Combinatory Logic. A proper study of these foundations leads to a better understanding of some of the fundamental issues in Computer Science.

  3. Drug-Induced Urinary Calculi

    Science.gov (United States)

    Matlaga, Brian R; Shah, Ojas D; Assimos, Dean G

    2003-01-01

    Urinary calculi may be induced by a number of medications used to treat a variety of conditions. These medications may lead to metabolic abnormalities that facilitate the formation of stones. Drugs that induce metabolic calculi include loop diuretics; carbonic anhydrase inhibitors; and laxatives, when abused. Correcting the metabolic abnormality may eliminate or dramatically attenuate stone activity. Urinary calculi can also be induced by medications when the drugs crystallize and become the primary component of the stones. In this case, urinary supersaturation of the agent may promote formation of the calculi. Drugs that induce calculi via this process include magnesium trisilicate; ciprofloxacin; sulfa medications; triamterene; indinavir; and ephedrine, alone or in combination with guaifenesin. When this situation occurs, discontinuation of the medication is usually necessary. PMID:16985842

  4. Observational Calculi and Association Rules

    CERN Document Server

    Rauch, Jan

    2013-01-01

    Observational calculi were introduced in the 1960’s as a tool of logic of discovery. Formulas of observational calculi correspond to assertions on analysed data. Truthfulness of suitable assertions can lead to acceptance of new scientific hypotheses. The general goal was to automate the process of discovery of scientific knowledge using mathematical logic and statistics. The GUHA method for producing true formulas of observational calculi relevant to the given problem of scientific discovery was developed. Theoretically interesting and practically important results on observational calculi were achieved. Special attention was paid to formulas - couples of Boolean attributes derived from columns of the analysed data matrix. Association rules introduced in the 1990’s can be seen as a special case of such formulas. New results on logical calculi and association rules were achieved. They can be seen as a logic of association rules. This can contribute to solving contemporary challenging problems of data minin...

  5. Calculi of meta-variables

    Institute of Scientific and Technical Information of China (English)

    Masahiko SATO; Takafumi SAKURAI; Yukiyoshi KAMEYAMA; Atsushi IGARASH

    2008-01-01

    The notion of meta-variable plays a fun-damental role when we define formal systems such as logical and computational calculi. Yet it has been usually understood only informally as is seen in most textbooks of logic. Based on our observations of the usages of meta-variables in textbooks, we propose two formal systems that have the notion of meta-variable. In both calculi, each variable is given a level (non-negative integer), which classifies variables into object variables (level 0), meta-variables (level 1), metameta-variables (level 2) and so on. Then, simple arity systems are. used to exclude meaningless terms like a meta-level function operating on the metameta-level. A main difference of the two calculi lies in the definitions of substitution. The first calculus uses textual substitution, which can often be found in definitions of quantified formulae: when a term is substituted for a meta-variable, free object-level variables in the term may be captured. The second cal-culus is based on the observation that predicates can be regarded as meta-level functions on object-level terms, hence uses capture-avoiding substitution. We show that both calculi enjoy a number of properties including Church-Rosser and Strong Normalization, which are indispensable when we use them as frameworks to define logical systems.

  6. Renal pelvic calculi and neoplasm. New indication for treatment of asymptomatic renal pelvic calculi?

    DEFF Research Database (Denmark)

    Vibitis, H; Jørgensen, J B

    1990-01-01

    Metaplasia of the renal pelvis caused by chronic irritation, calculi, infection is a reversible pre-malignant condition. The application of ESWL on renal calculi as a safe treatment in relation to metaplasia is discussed and a case history is presented.......Metaplasia of the renal pelvis caused by chronic irritation, calculi, infection is a reversible pre-malignant condition. The application of ESWL on renal calculi as a safe treatment in relation to metaplasia is discussed and a case history is presented....

  7. Computed tomographic analysis of renal calculi

    Energy Technology Data Exchange (ETDEWEB)

    Hillman, B.J.; Drach, G.W.; Tracey, P.; Gaines, J.A.

    1984-03-01

    An in vitro study sought to determine the feasibility of using computed tomography (CT) to analyze the chemical composition of renal calculi and thus aid in selecting the best treatment method. Sixty-three coded calculi were scanned in a water bath. Region-of-interest measurements provided the mean, standard deviation, and minimum and maximum pixel values for each stone. These parameters were correlated with aspects of the stones' chemical composition. A multivariate analysis showed that the mean and standard deviation of the stones' pixel values were the best CT parameters for differentiating types of renal calculi. By using computerized mapping techniques, uric acid calculi could be perfectly differentiated from struvite and calcium oxalate calculi. The latter two types also were differentiable, but to a lesser extent. CT has a potential role as an adjunct to clinical and laboratory methods for determining the chemical composition of renal calculi in an effort to select optimal treatment.

  8. Verification of Stochastic Process Calculi

    DEFF Research Database (Denmark)

    Skrypnyuk, Nataliya

    process calculi. The description of a system in the syntax of a particular stochastic process calculus can be analysed in a compositional way, without expanding the state space by explicitly resolving all the interdependencies between the subsystems which may lead to the state space explosion problem....... In support of this claim we have developed analysis methods that belong to a particular type of Static Analysis { Data Flow / Pathway Analysis. These methods have previously been applied to a number of non-stochastic process calculi. In this thesis we are lifting them to the stochastic calculus...... description of a system. The presented methods have a clear application in the areas of embedded systems, (randomised) protocols run between a fixed number of parties etc....

  9. Differential calculi on noncommutative bundles

    OpenAIRE

    Pflaum, Markus J.; Schauenburg, Peter

    1996-01-01

    We introduce a category of noncommutative bundles. To establish geometry in this category we construct suitable noncommutative differential calculi on these bundles and study their basic properties. Furthermore we define the notion of a connection with respect to a differential calculus and consider questions of existence and uniqueness. At the end these constructions are applied to basic examples of noncommutative bundles over a coquasitriangular Hopf algebra.

  10. Computed tomographic analysis of urinary calculi

    Energy Technology Data Exchange (ETDEWEB)

    Newhouse, J.H.; Prien, E.L.; Amis, E.S. Jr.; Dretler, S.P.; Pfister, R.C.

    1984-03-01

    Excised urinary calculi were subjected to computed tomographic (CT) scanning in an attempt to determine whether CT attenuation values would allow accurate analysis of stone composition. The mean, maximum, and modal pixel densities of the calculi were recorded and compared; the resulting values reflected considerable heterogeneity in stone density. Although uric acid and cystine calculi could be identified by their discrete ranges on one or more of these criteria, calcium-containing stones of various compositions, including struvite, could not be distinguished reliably. CT analysis of stone density is not likely to be more accurate than standard radiography in characterizing stone composition in vivo.

  11. Retroperitoneal Pyelolithotomy for Management of Renal Calculi

    OpenAIRE

    Chander, Jagdish; Suryavanshi, Manav; Lal, Pawan; Singh, Lakvinder; Ramteke, V. K.

    2005-01-01

    Objective: We evaluated the role of retroperitoneoscopic pyelolithotomy in the management of renal calculi. Methods: Fifty-six cases (male, 27; female, 29) of solitary or multiple renal calculi were evaluated in the study. There were 46 patients with a single calculus, 4 patients with a staghorn calculus, and 6 with a caliceal calculus. Retroperitoneoscopic pyelolithotomy was carried out after creating a retroperitoneal space with the balloon dissection method. Pneumoretroperitoneum was maint...

  12. Flow Logic for Process Calculi

    DEFF Research Database (Denmark)

    Nielson, Hanne Riis; Nielson, Flemming; Pilegaard, Henrik

    2012-01-01

    Flow Logic is an approach to statically determining the behavior of programs and processes. It borrows methods and techniques from Abstract Interpretation, Data Flow Analysis and Constraint Based Analysis while presenting the analysis in a style more reminiscent of Type Systems. Traditionally dev...... considerations. The electronic supplements present an application of the analysis techniques to a version of the π-calculus incorporating distribution and code mobility; also the proofs of the main results can be found in the electronic supplements....... developed for programming languages, this article provides a tutorial development of the approach of Flow Logic for process calculi based on a decade of research. We first develop a simple analysis for the π-calculus; this consists of the specification, semantic soundness (in the form of subject reduction...

  13. Observations of vaginal calculi in dolphins.

    Science.gov (United States)

    Woodhouse, C D; Rennie, C J

    1991-07-01

    Vaginal calculi have been described from the common (Delphinus delphis), Pacific white-sided (Lagenorhynchus obliquidens) and spotted (Stenella attenuata) dolphins. We describe additional calculi found in six sexually mature D. delphis from southern California. Three calculi were large (ca. 7 x 5 cm), exhibited concentric layer crystallization, and were unique from previously published descriptions. One calculus described previously and one in our sample appeared to be a fetal skeleton and skull respectively. Using CAT scans of a first trimester northern right whale dolphin (Lissodelphis borealis) and of a near term Delphinus delphis, we discuss the potential origin and development of vaginal calculi through analysis of ossification in embryonic delphinids. We hypothesize that the calculi represented spontaneous incomplete abortion with retention of part or all of the fetus in the distal reproductive tract. The form of the calculus relates to the degree of skeletal development at the time of fetal death. Calculi from a pregnant dolphin provided one measure of residence time. PMID:1920661

  14. Holmium laser lithotripsy of bladder calculi

    Science.gov (United States)

    Beaghler, Marc A.; Poon, Michael W.

    1998-07-01

    Although the overall incidence of bladder calculi has been decreasing, it is still a significant disease affecting adults and children. Prior treatment options have included open cystolitholapaxy, blind lithotripsy, extracorporeal shock wave lithotripsy, and visual lithotripsy with ultrasonic or electrohydraulic probes. The holmium laser has been found to be extremely effective in the treatment of upper tract calculi. This technology has also been applied to the treatment of bladder calculi. We report our experience with the holmium laser in the treatment of bladder calculi. Twenty- five patients over a year and a half had their bladder calculi treated with the Holmium laser. This study was retrospective in nature. Patient demographics, stone burden, and intraoperative and post-operative complications were noted. The mean stone burden was 31 mm with a range of 10 to 60 mm. Preoperative diagnosis was made with either an ultrasound, plain film of the abdomen or intravenous pyelogram. Cystoscopy was then performed to confirm the presence and determine the size of the stone. The patients were then taken to the operating room and given a regional or general anesthetic. A rigid cystoscope was placed into the bladder and the bladder stone was then vaporized using the holmium laser. Remaining fragments were washed out. Adjunctive procedures were performed on 10 patients. These included transurethral resection of the prostate, transurethral incision of the prostate, optic internal urethrotomy, and incision of ureteroceles. No major complications occurred and all patients were rendered stone free. We conclude that the Holmium laser is an effective and safe modality for the treatment of bladder calculi. It was able to vaporize all bladder calculi and provides a single modality of treating other associated genitourinary pathology.

  15. A criterion for separating process calculi

    CERN Document Server

    Banti, Federico; Tiezzi, Francesco; 10.4204/EPTCS.41.2

    2010-01-01

    We introduce a new criterion, replacement freeness, to discern the relative expressiveness of process calculi. Intuitively, a calculus is strongly replacement free if replacing, within an enclosing context, a process that cannot perform any visible action by an arbitrary process never inhibits the capability of the resulting process to perform a visible action. We prove that there exists no compositional and interaction sensitive encoding of a not strongly replacement free calculus into any strongly replacement free one. We then define a weaker version of replacement freeness, by only considering replacement of closed processes, and prove that, if we additionally require the encoding to preserve name independence, it is not even possible to encode a non replacement free calculus into a weakly replacement free one. As a consequence of our encodability results, we get that many calculi equipped with priority are not replacement free and hence are not encodable into mainstream calculi like CCS and pi-calculus, t...

  16. Measure permutation formulas in Feynman's operational calculi

    Science.gov (United States)

    Chang, K. S.; Kim, B. S.; Park, Y. H.

    2010-03-01

    In Jefferies-Johnson’s theory of Feynman’s operational calculi for noncommuting operators, the two operators T µ 1,µ 2 f( Ã, tilde B ) and T µ 2,µ1 f( Ã, tilde B ) are not equal. Relationships between these two operators are given, i.e., “measure permutation formulas” in Feynman’s operational calculi are developed; they correspond to the “index permutation formula” in Maslov’s discretized version of Feynman’s operational calculus.

  17. Dietary dissolution of urinary calculi in cats

    International Nuclear Information System (INIS)

    A young adult, castrated male DSH cat was admitted for pollakiuria, hematuria and dysuria. The cat was being fed a commercial dry grocery brand cat food. Radiographs demonstrated multiple radiodense cystic calculi and urinalysis showed hematuria but no crystalluria. A tentative diagnosis of struvite urolithiasis was made. The cat was fed s/d® Feline food exclusively. Clinical signs disappeared within a week and no calculi were visible radiographically within three weeks. s/d® Feline food was continued an additional two weeks. This case study shows that s/d® Feline therapeutic food can be used to successfully manage struvite urolithiasis in cats

  18. Mobility in process calculi and natural computing

    CERN Document Server

    Aman, Bogdan

    2011-01-01

    The design of formal calculi in which fundamental concepts underlying interactive systems can be described and studied has been a central theme of theoretical computer science in recent decades, while membrane computing, a rule-based formalism inspired by biological cells, is a more recent field that belongs to the general area of natural computing. This is the first book to establish a link between these two research directions while treating mobility as the central topic. In the first chapter the authors offer a formal description of mobility in process calculi, noting the entities that move

  19. Stochastic Simulation of Process Calculi for Biology

    Directory of Open Access Journals (Sweden)

    Andrew Phillips

    2010-10-01

    Full Text Available Biological systems typically involve large numbers of components with complex, highly parallel interactions and intrinsic stochasticity. To model this complexity, numerous programming languages based on process calculi have been developed, many of which are expressive enough to generate unbounded numbers of molecular species and reactions. As a result of this expressiveness, such calculi cannot rely on standard reaction-based simulation methods, which require fixed numbers of species and reactions. Rather than implementing custom stochastic simulation algorithms for each process calculus, we propose to use a generic abstract machine that can be instantiated to a range of process calculi and a range of reaction-based simulation algorithms. The abstract machine functions as a just-in-time compiler, which dynamically updates the set of possible reactions and chooses the next reaction in an iterative cycle. In this short paper we give a brief summary of the generic abstract machine, and show how it can be instantiated with the stochastic simulation algorithm known as Gillespie's Direct Method. We also discuss the wider implications of such an abstract machine, and outline how it can be used to simulate multiple calculi simultaneously within a common framework.

  20. Internalization of Calcium Oxalate Calculi Developed in Narrow Cavities

    Directory of Open Access Journals (Sweden)

    Fèlix Grases

    2014-03-01

    Full Text Available We describe the case of a patient with calcium oxalate monohydrate and calcium oxalate dihydrate calculi occluded in cavities. All those calculi were located inside narrow cavities covered with a thin epithelium that permits their visualization. Urinary biochemical analysis showed high calciuria, not hypercalciuria, hypocitraturia, and a ratio [calcium]/[citrate] >0.33. The existence of cavities of very low urodynamic efficacy was decisive in the formation of such calculi. It is important to emphasize that we observed a thin epithelium covering such cavities, demonstrating that this epithelium may be formed after the development of the calculi through a re-epithelialization process.

  1. Endoscopic treatment of large vesical calculi

    International Nuclear Information System (INIS)

    Objective: To determine the efficiency and safety of endoscopic treatment of large vesical calculi with the available modern endoscopic instruments. Methology: In case series, patients were collected randomly from 2007 to 2014. Patients were diagnosed with ultrasound and Nephroscope with Swiss pneumatic lithoclast, lithotrite and stone punch were used for treatment. Results: Majority of the patient could be managed with the method adopted. Stone size, hardness or softness, gender were the factors affecting treatment. Associated prostate pathology was seen in four patients. Postoperative complications included hemorrhage, perforation, residual stone and transurethral resection of prostate syndrome. Conclusion: Overall, it is a safe procedure except in patients with large enlarged prostate and large vesical calculi. Very hard vesical calculus may need vesicolithotomy. (author)

  2. Neutron activation analysis of urinary calculi

    International Nuclear Information System (INIS)

    Urinary calculi resulting from disorders in the urinary system are mostly composed of uric acid, urates, calcium oxalate, alkaline earth phosphates (Ca and Mg), triple phosphate (magnesium ammonium phosphate), calcium carbonate, cystine, xanthine, and traces of proteins. The determination of these macro-constituents has been carried out by different analytical procedures. No attempts however, have been reported regarding the determination of trace elements in urinary stones, apart from that of Herring et al., who investigated the consumption of strontium by urolithiasis patients. The present work is a non-destructive neutron activation analysis of urinary calculi, to search the variation in concentration of certain trace elements with the chemical composition of the calculus

  3. More on differential calculi on bicrossproducts

    International Nuclear Information System (INIS)

    We extend a previous classification of differentials and Cartan calculus on the bicrossproduct quantum group k(M)-blacktriangleright triangleleft-kG to its dual Hopf algebra H = kM-triangleright blacktriangleleft-k(G). It turns out that the usual bicovariant differential calculi on kM and on k(G) extend naturally to H. We explicitly work out the examples of kZ2-triangleright blacktriangleleft (Z3) and kZ6-triangleright 3). (author)

  4. Renal calculi in wild Eurasian otters (Lutra lutra) in England.

    Science.gov (United States)

    Simpson, V R; Tomlinson, A J; Molenaar, F M; Lawson, B; Rogers, K D

    2011-07-01

    Macroscopic renal calculi were seen in 50 of 492 (10.2 per cent) wild Eurasian otters found dead in England from 1988 to 2007. Forty-eight adults and two subadults were affected. Calculi were present in 15.7 per cent (31 of 197) of adult males and 12.7 per cent (17 of 134) of adult females. There was an increase in prevalence in the study population over time; no calculi were found in 73 otters examined between 1988 and 1996, but in most subsequent years they were observed with increased frequency. Calculi occurred in both kidneys but were more common in the right kidney. They varied greatly in shape and size; larger calculi were mostly seen in the calyces while the smallest ones were commonly found in the renal medulla. Calculi from 45 cases were examined by x-ray diffraction analysis; in 43 (96 per cent), they were composed solely of ammonium acid urate. Affected otters had heavier adrenal glands relative to their body size than unaffected otters (P0.05). Many otters had fresh bite wounds consistent with intraspecific aggression. The proportion bitten increased over time and this coincided with the increased prevalence of renal calculi. PMID:21676988

  5. Renal calculi: emergency department diagnosis and treatment.

    Science.gov (United States)

    Carter, Michelle R; Green, Brad R

    2011-07-01

    The acute treatment of kidney stones (urolithiasis) addresses pain management and focuses on the effects of the morbidity associated with an obstructed renal system. Minimal fluid intake, resulting in decreased urine production and a high concentration of stone-forming salts, is a leading factor in renal calculi development. Radio-opaque calcareous stones account for 70% to 75% of renal calculi. Microscopic hematuria in the presence of acute flank pain is suggestive of renal colic, but the absence of red blood cells does not exclude urolithiasis. Furthermore, many inflammatory and infectious conditions cause hematuria, demonstrating the low specificity of urinalysis testing. The diagnostic modality of choice is a noncontrast computed tomography (CT); ultrasonography s preferred in pregnant patients and children. Combining opioids with non-steroidal anti-inflammatory drugs (NSAIDs) is the optimal evidence-based regimen to treat severe symptoms. Rapid intravenous (IV) hydration has not shown a benefit. Potentially life-threatening diagnoses including abdominal aortic aneurysm, ovarian torsion, and appendicitis may mimic renal colic and must be ruled out. PMID:22164398

  6. SEM and X-ray microanalysis of human prostatic calculi

    Energy Technology Data Exchange (ETDEWEB)

    Vilches, J.; Lopez, A.; De Palacio, L.; Munoz, C.; Gomez, J.

    1982-02-01

    Calculi removed from human prostates affected with nodular hyperplasia were analyzed with scanning electron microscopy and EDAX system. The general spectrum was made up of Na, Al, Mg, S, P, Ca and Zn. Two types of stone were identified morphostructurally and microanalytically: calculi type I of nodular surface with high peaks of S, and calculi type II polyfaceted with high peaks of P and Ca. Their formation from corpora amylacea and/or exogenous constituents is discussed. The superficial deposit of Zn suggests its incorporation from the prostatic liquid and does not seem to play an important role in the genesis.

  7. TREATMENT WITH TAMSULOSIN IN PATIENTS WITH DISTAL URETERAL CALCULI

    OpenAIRE

    Jagodic, K.; Bizjak, I.; Erklavec, M.; Poteko, S.; Korosec-Jagodic, H.

    2008-01-01

    Background: Symptomatic ureteral calculi are one of the most important issues in urologist emergency clinical settings. Spontaneous passage of distal ureteral calculi is usually achieved with good hydration and spasmoanalgetic drugs. alpha-blocker therapy may facilitate and accelerate the spontaneous passage of ureteral stones.Patients and methodsIn retrospective study we analyzed patients with renal colic admitted to our department in 2006. All of them had clinical examination, urine and blo...

  8. Large bilateral star-shaped calculi in the seminal vesicles.

    Directory of Open Access Journals (Sweden)

    Namjoshi S

    2002-04-01

    Full Text Available Calculi in the seminal vesicles (SV are extremely rare. A patient having large bilateral star-shaped calculi in the SV is reported. They were seen on plain x-ray and confirmed by computed tomography. On the reconstructed CT scans the large stone on the right side measured about 35 X 35 X 50 mm and the one on the left, 30 X 20 X 45 mm. They were not felt on rectal examination, as they were situated laterally.

  9. Combined calculi for photon orbital and spin angular momenta

    Science.gov (United States)

    Elias, N. M.

    2014-08-01

    Context. Wavelength, photon spin angular momentum (PSAM), and photon orbital angular momentum (POAM), completely describe the state of a photon or an electric field (an ensemble of photons). Wavelength relates directly to energy and linear momentum, the corresponding kinetic quantities. PSAM and POAM, themselves kinetic quantities, are colloquially known as polarization and optical vortices, respectively. Astrophysical sources emit photons that carry this information. Aims: PSAM characteristics of an electric field (intensity) are compactly described by the Jones (Stokes/Mueller) calculus. Similarly, I created calculi to represent POAM characteristics of electric fields and intensities in an astrophysical context. Adding wavelength dependence to all of these calculi is trivial. The next logical steps are to 1) form photon total angular momentum (PTAM = POAM + PSAM) calculi; 2) prove their validity using operators and expectation values; and 3) show that instrumental PSAM can affect measured POAM values for certain types of electric fields. Methods: I derive the PTAM calculi of electric fields and intensities by combining the POAM and PSAM calculi. I show how these quantities propagate from celestial sphere to image plane. I also form the PTAM operator (the sum of the POAM and PSAM operators), with and without instrumental PSAM, and calculate the corresponding expectation values. Results: Apart from the vector, matrix, dot product, and direct product symbols, the PTAM and POAM calculi appear superficially identical. I provide tables with all possible forms of PTAM calculi. I prove that PTAM expectation values are correct for instruments with and without instrumental PSAM. I also show that POAM measurements of "unfactored" PTAM electric fields passing through non-zero instrumental circular PSAM can be biased. Conclusions: The combined PTAM calculi provide insight into mathematically modeling PTAM sources and calibrating POAM- and PSAM-induced measurement errors.

  10. Nonlocal Operational Calculi for Dunkl Operators

    Directory of Open Access Journals (Sweden)

    Ivan H. Dimovski

    2009-03-01

    Full Text Available The one-dimensional Dunkl operator $D_k$ with a non-negative parameter $k$, is considered under an arbitrary nonlocal boundary value condition. The right inverse operator of $D_k$, satisfying this condition is studied. An operational calculus of Mikusinski type is developed. In the frames of this operational calculi an extension of the Heaviside algorithm for solution of nonlocal Cauchy boundary value problems for Dunkl functional-differential equations $P(D_ku = f$ with a given polynomial $P$ is proposed. The solution of these equations in mean-periodic functions reduces to such problems. Necessary and sufficient condition for existence of unique solution in mean-periodic functions is found.

  11. Ureteroscopic Holmium:YAG Laser Lithotripsy for Managing Ureteral Calculi (A Report of 168 Cases)

    Institute of Scientific and Technical Information of China (English)

    庞自力; 肖传国; 曾甫清

    2004-01-01

    Summary: The effectiveness and safety of ureteroscopic holmium: YAG laser lithotripsy for managing ureteral calculi was evaluated. Ureteroscopic holmium:YAG laser lithotripsy was performed in 168 ureteral calculi (upper 27 cases, middle 33 cases and lower 108 cases). The results showed that the stone-free rate was 92.6 % in the upper ureteral calculi, 93.9 % in the middle ureteral calculi and 94.4 % in the lower ureteral calculi, respectively. The complication rate was 4.8 % (8 cases).It was suggested that ureteroscopic holmium: YAG laser lithotripsy is a highly effective and safe treatment modality for managing ureteral calculi.

  12. Site of impaction of ureteric calculi requiring surgical intervention.

    Science.gov (United States)

    El-Barky, Ehab; Ali, Yusuf; Sahsah, Mohammed; Terra, Ali A; Kehinde, Elijah O

    2014-02-01

    Textbooks describe three narrowest anatomic sites in the ureter as the most likely places for ureteral calculi to lodge, these are: the pelvi-ureteric junction (PUJ), the point where the ureters cross over the iliac vessels and the ureterovesical junction (UVJ). The purpose of this study is to determine whether calculi causing ureteric obstruction and requiring surgical treatment are found mostly at these three narrowest anatomic points of the ureter. Three hundred consecutive patients with impacted ureteric calculi who required surgical intervention were studied. The location of the impacted calculus on the day of surgical intervention was categorized according to nine predetermined levels outlined in a designed diagram based on findings on non-contrast CT of kidneys, ureters and bladder. Two peaks in stone distribution in the ureters were encountered; the first was above the ischial spine in the proximal part of the lower third ureter (84 patients, 28%), while the second was at the level between L3 and L4 lumbar vertebrae (66 patients, 22%). Overall, the location of impacted calculi was as follows, 53, 34, 10 and 3% in the lower third ureter, upper third ureter, PUJ and mid ureter, respectively. This study demonstrates two peaks of calculi distribution in the ureter where ureteric calculi become impacted: the upper ureter below the PUJ and a second in the lower ureter, more proximal than the UVJ. There was an absence of the peak in stone location over the iliac vessels, that is, the mid ureter.

  13. The incidence and location of prostatic calculi on noncontrast computed tomography images in patients with renal calculi.

    Science.gov (United States)

    Balasar, Mehmet; Poyraz, Necdet; Göğer, Yunus Emre; Unal, Yunus; Pişkin, Mehmet Mesut

    2015-08-01

    In this study, the incidence and location of prostatic calculi on noncontrast abdominal computed tomography (NCACT) images of patients with and without renal stones were investigated. Between 2006 and 2013, NCACT images were taken of 133 patients treated for renal stones (Group I) and of 100 age-matched control patients with putative urinary stone disease (Group II) in our clinic. The incidence and location of prostatic calculi on these images were determined. The location of prostatic calculus was classified as type A if they were located in the main prostatic ducts, and type B if they were located outside the ducts. Prostatic calculi were present in 44.4% of patients in Group I and 21.0% of patients in Group II. The incidence of prostatic calculi was significantly higher in patients with urinary stones compared with those without (Pincidence of prostatic calculi is more prevalent in patients with renal stones. On NCACT images, prostatic calculi were mostly detected in the main prostatic ducts, which were defined as type A.

  14. The incidence and location of prostatic calculi on noncontrast computed tomography images in patients with renal calculi.

    Science.gov (United States)

    Balasar, Mehmet; Poyraz, Necdet; Göğer, Yunus Emre; Unal, Yunus; Pişkin, Mehmet Mesut

    2015-08-01

    In this study, the incidence and location of prostatic calculi on noncontrast abdominal computed tomography (NCACT) images of patients with and without renal stones were investigated. Between 2006 and 2013, NCACT images were taken of 133 patients treated for renal stones (Group I) and of 100 age-matched control patients with putative urinary stone disease (Group II) in our clinic. The incidence and location of prostatic calculi on these images were determined. The location of prostatic calculus was classified as type A if they were located in the main prostatic ducts, and type B if they were located outside the ducts. Prostatic calculi were present in 44.4% of patients in Group I and 21.0% of patients in Group II. The incidence of prostatic calculi was significantly higher in patients with urinary stones compared with those without (PII the locations were 76.2% type A and 23.8% type B. The incidence of prostatic calculi is more prevalent in patients with renal stones. On NCACT images, prostatic calculi were mostly detected in the main prostatic ducts, which were defined as type A. PMID:25991494

  15. Extensive prostatic calculi in alkaptonuria: An unusual manifestation of rare disease

    Directory of Open Access Journals (Sweden)

    Gaurav Sali

    2015-07-01

    Full Text Available Extensive prostatic calculi in a young man should always elicit the suspicion of alkaptonuria. Although prostatic calculi are seen in chronic prostatitis, chronic pelvic pain syndrome and benign prostate hyperplasia, none of these have prostatic calculi or calcification as extensive as in alkaptonuria. A 36 years young man who had severed obstructive lower urinary tract symptoms with extensive prostatic calculi was found to be alkaptonuric on further evaluation.

  16. Extensive prostatic calculi in alkaptonuria: An unusual manifestation of rare disease

    OpenAIRE

    Gaurav Sali; Appu Thomas; Ginil Kumar; Balagopalan Nair; Kalvampara Sanjeevan; Georgie Mathew; Kannan Nair

    2015-01-01

    Extensive prostatic calculi in a young man should always elicit the suspicion of alkaptonuria. Although prostatic calculi are seen in chronic prostatitis, chronic pelvic pain syndrome and benign prostate hyperplasia, none of these have prostatic calculi or calcification as extensive as in alkaptonuria. A 36 years young man who had severed obstructive lower urinary tract symptoms with extensive prostatic calculi was found to be alkaptonuric on further evaluation.

  17. Percutaneous retrieval of upper urinary tract foreign bodies and calculi

    International Nuclear Information System (INIS)

    To determine, when extracorporeal shockwave lithotripsy is contraindicated, the usefulness and safety of percutaneous management in the removal from the upper urinary tract of foreign bodies and calculi, or small remnants of these, retained after percutaneous nephrolithotomy. Between January 1996 and May 2001, We attempted to retrieve foreign bodies or calculi from the upper urinary tract of 20 patients, using various percutaneous technique. There were eleven foreign bodies, namely fragmented nephrostomy catheters (n=2), migrated ureteric stents inaccessible to retrograde ureteroscopic management (n=8), and one metallic radiopaque marker which was separated from the pusher of the internal ureteral stent. Nine urinary tract calculi were present. These ranged in radiographically measured size from 4 to 8 mm in their largest diameter, and were found in the renal pelvis or calyx (n=5) and ureter (n=4). After percutaneous nephrostomy, all procedures involved the use of a 7-F to 14-F sheath, inserted under fluoroscopic guidance. Devices used for the retrieval of these objects include a stone basket retriever, loop snare, grasping forceps, and balloon catheter. In all cases except one, it was possible to retrieve calculi or other items from the upper urinary tract. No surgical procedure was required and no significant complications were encountered in any of the cases during or after the procedures. The percutaneous technique can be useful and safe in the management of foreign bodies or calculi present in the upper urinary tract

  18. Existence families, functional calculi and evolution equations

    CERN Document Server

    deLaubenfels, Ralph

    1994-01-01

    This book presents an operator-theoretic approach to ill-posed evolution equations. It presents the basic theory, and the more surprising examples, of generalizations of strongly continuous semigroups known as 'existent families' and 'regularized semigroups'. These families of operators may be used either to produce all initial data for which a solution in the original space exists, or to construct a maximal subspace on which the problem is well-posed. Regularized semigroups are also used to construct functional, or operational, calculi for unbounded operators. The book takes an intuitive and constructive approach by emphasizing the interaction between functional calculus constructions and evolution equations. One thinks of a semigroup generated by A as etA and thinks of a regularized semigroup generated by A as etA g(A), producing solutions of the abstract Cauchy problem for initial data in the image of g(A). Material that is scattered throughout numerous papers is brought together and presented in a fresh, ...

  19. Intracorporeal Lithotripsy for Ureteral Calculi Using Swiss Lithoclast : SKIMS Experience

    Directory of Open Access Journals (Sweden)

    Arif Hamid, M. Saleem Wani, B. S. Wazir

    2005-10-01

    Full Text Available At present the techniques available for performing intracorporeal lithotripsy include electrohydraulic,ultrasonic, laser, and ballistic lithotripsy. We present our experience with a unique technology forperforming intracorporeal lithotripsy, namely the Swiss lithoclast, which is a form of ballistic lithotripsy.This simple and inexpensive device uses compressed air to activate a solid probe in a manner similarto that of a jackhammer. We report the use of this lithoclast in 92 patients involving a total of 95ureteral calculi. The lithoclast successfully fragmented 81 of the 95 calculi, a success rate of 85.26%.There were no major complications directly related to the use of this device. The Swiss lithoclastseems to be a safe, effective and an inexpensive means of performing intracorporeal lithotripsy forureteral calculi

  20. Percutaneous Removal of Retained Calculi from the Abdomen

    International Nuclear Information System (INIS)

    With rising pressure placed on health service resources minimally invasive techniques requiring only short hospital admissions are increasing in importance. We describe the techniques used to remove calculi from the peritoneal cavity which had been retained after surgery and continued to cause clinical problems. In both cases described the calculi lay within abscess cavities associated with fistulous tracks to the skin. The fistulae were dilated to allow passage of therapeutic radiologic and endoscopic equipment enabling manipulation and subsequent extraction of the stones. In both cases removal of the calculi allowed complete resolution of the fistulae and the patients made a full clinical recovery. Removal of gallstones which have escaped into the peritoneum at laparoscopic cholecystectomy leading to sepsis has been described; we describe the novel management of a patient in whom extraction had already been attempted, at another hospital, without success. Removal of an appendicolith, described herein another patient, does not appear to have been reported previously

  1. Treatment of giant ureterocele calculi by Holmium Laser Lithotripsy

    Directory of Open Access Journals (Sweden)

    Haluk Söylemez

    2009-01-01

    Full Text Available Aim: Most ureteral stones pass spontaneously. But patients who have a calculi in an ureterocele could not pass their stone, because of narrow ureteral orifice. These stones may remain asymptomatic until hematuria or obstruction occurs.Materials and Methods: Holmium laser has many uses in urology, including soft tissue incision and calculus fragmentation. These properties are ideal for endoscopic management of the ureterocele calculusResults: We present a young patient who has no spesific and severe symptoms with a hypofunctional left kidney because of giant calculi in an ureterocele Conclusion: Its imaging characteristics on intravenous pyelography and endoscopic treatment were emphasized.

  2. Raman spectroscopic investigation of urinary calculi and salivary stones

    International Nuclear Information System (INIS)

    Full text: The capabilities and limitations of determining the composition of urinary calculi (34 patients) and salivary stones (27 patients) by Raman spectroscopy have been investigated by analysing Raman spectra obtained with 1064 nm laser excitation, and comparing them with Raman spectra both from specific reference substances and from a commercial Raman database. The composition results were also compared with those obtained by other analytical methods e.g. powder diffraction. Raman spectroscopy proves to be an analytical method which provides reliable results on the composition of urinary calculi and salivary stones quickly, non-destructively and without any need of sample preparation. (author)

  3. Labelled Lambda-calculi with Explicit Copy and Erase

    Directory of Open Access Journals (Sweden)

    Maribel Fernández

    2010-03-01

    Full Text Available We present two rewriting systems that define labelled explicit substitution lambda-calculi. Our work is motivated by the close correspondence between Levy's labelled lambda-calculus and paths in proof-nets, which played an important role in the understanding of the Geometry of Interaction. The structure of the labels in Levy's labelled lambda-calculus relates to the multiplicative information of paths; the novelty of our work is that we design labelled explicit substitution calculi that also keep track of exponential information present in call-by-value and call-by-name translations of the lambda-calculus into linear logic proof-nets.

  4. Dissolution of Ureteral Uric Acid Calculi with Local Litholytic Irrigation

    Institute of Scientific and Technical Information of China (English)

    CHEN Zhiqiang; YAO Linfang; YE Zhangqun; YANG Weimin

    2005-01-01

    Summary: This study was designed to evaluate the efficacy of local litholytic irrigation (LLI) in the treatment of ureteral uric acid calculi. Fourteen cases of ureteral uric acid calculi were diagnosed by abdominal plain radiography (KUB),retrograde urography,ultrasonography(B-mode ultrasound),spiral computerized tomography(CT) and blood biochemical examinations. A ureteral catheter was passed retrogradely across ureteral calculi by cystoscopy. LLI with tromethamine-E(THAM-E) was performed via the ureteral catheter after the improvement of renal function and general situation and the control of urinary tract infection under the condition of intravenous application of antibiotics. The irrigation rate varied from 1000 to 1500 ml per day. Retrograde pyelography demonstrated complete dissolution of all the stones,13 cases within 10 days and 1 within 12 days. Mild hematuria was observed in the majority of the cases and temporary aggravated lumbago in 1 case,with no other side effects. It is concluded that LLI is a practical and effective method in the treatment of ureteral uric acid calculi for its advantages of shorter duration,lower cost,less physical suffering and no severe complications.

  5. Papillary and Nonpapillary Calcium Oxalate Monohydrate Renal Calculi: Comparative Study of Etiologic Factors

    OpenAIRE

    Enrique Pieras; Antonia Costa-Bauz; Margarita Ramis; Felix Grases

    2006-01-01

    Calcium oxalate monohydrate (COM) renal calculi can be classified into two groups: papillary and nonpapillary. In this paper, a comparative study between etiologic factors of COM papillary and nonpapillary calculi is performed. The study included 40 patients with COM renal calculi. The urine of these individuals was analyzed. Case history, lifestyle, and dietetic habits were obtained.No significant differences between urinary biochemical data of both groups were observed; 50% of COM papillary...

  6. Determination of Lead in Human Calculi and Its Effects on Renal Function of Lead Occupational Workers

    Directory of Open Access Journals (Sweden)

    F. Memon

    2016-06-01

    Full Text Available Seventy five samples of renal and eighteen samples of supra gingival calculi of lead recycling workers were collected over the period of seven years (2008-2014 and studied for the accumulation of lead. The results were compared with those of non exposed subjects. The lead content of calculi was investigated for its dependence on type and composition of calculi, blood lead, job status and duration of exposure. The effect of blood lead and renal calculi was also investigated in relation to kidney function of respective subjects. The mean lead levels of various types of calculi were found to follow the order as phosphate > oxalate > urate .> cystine while single principal group of supra gingival calculi resulted in lower levels of metal. The lead content of calculi positively correlated with phosphate content of both of the renal (r = 0.655 and supra gingival calculi (r= 0.866, Impaired renal function was more pronounced in active workers and depended on blood lead levels in addition to presence of metal in renal calculi

  7. Bacterial spectrum of urine in staghorn calculi nephrolithiasis

    Directory of Open Access Journals (Sweden)

    Kogan М.I

    2011-09-01

    Full Text Available Purpose: to study the role of the bacterial spectrum of urine in the development and clinical course of staghorn calculi nephrolithiasis. Patients and Methods. From 2008 to 2010 in the urological department of Rostov State Medical University urine culture was assessed in 86 patients with staghorn calculi. Mean age was 50,4±5,9 (25-73 years. Results: Most of the patients with staghorn calculus (89,5% have microbial contamination of urine, which has a high correlation with leucocituria, and the spectrum of microorganisms often has the various bacterial associations, which caused more infection complications during treatment. Conclusion: In the urine urease-producing bacteria, E. Coli, gram-positive organisms, nonclostridial anaerobic bacteria were predominated

  8. Ureteroscopy assisted retrograde nephrostomy for complete staghorn renal calculi.

    Science.gov (United States)

    Kawahara, Takashi; Ito, Hiroki; Terao, Hideyuki; Ogawa, Takehiko; Uemura, Hiroji; Kubota, Yoshinobu; Matsuzaki, Junichi

    2012-09-01

    Complete staghorn calculi are typically managed with percutaneous nephrolithotomy (PCNL). However, dilating nephrostomy and inserting a nephro access sheath can be difficult to perform without hydronephrosis. We reported the procedure of ureteroscopy-assisted retrograde nephrostomy (UARN) during PCNL. UARN is effective without dilating the renal collecting system in cases of complete staghorn calculi. A 63-year old female with a left complete staghorn renal calculus was referred to our hospital. Under general and epidural anesthesia, the patient was placed in a modified-Valdivia position. A flexible ureteroscope was inserted and a Lawson retrograde nephrostomy puncture wire was advanced into the flexible ureteroscope. The puncture wire was forwarded along the route from the renal pelvis to the exit skin. Calculus fragmentation was done using a pneumatic lithotripter and the Ho: YAG laser. UARN during PCNL was effective for the treatment of a complete staghorn calculus.

  9. A Fully Abstract Symbolic Semantics for Psi-Calculi

    CERN Document Server

    Johansson, Magnus; Parrow, Joachim; 10.4204/EPTCS.18.2

    2010-01-01

    We present a symbolic transition system and bisimulation equivalence for psi-calculi, and show that it is fully abstract with respect to bisimulation congruence in the non-symbolic semantics. A psi-calculus is an extension of the pi-calculus with nominal data types for data structures and for logical assertions representing facts about data. These can be transmitted between processes and their names can be statically scoped using the standard pi-calculus mechanism to allow for scope migrations. Psi-calculi can be more general than other proposed extensions of the pi-calculus such as the applied pi-calculus, the spi-calculus, the fusion calculus, or the concurrent constraint pi-calculus. Symbolic semantics are necessary for an efficient implementation of the calculus in automated tools exploring state spaces, and the full abstraction property means the semantics of a process does not change from the original.

  10. Relating Sequent Calculi for Bi-intuitionistic Propositional Logic

    Directory of Open Access Journals (Sweden)

    Luís Pinto

    2011-01-01

    Full Text Available Bi-intuitionistic logic is the conservative extension of intuitionistic logic with a connective dual to implication. It is sometimes presented as a symmetric constructive subsystem of classical logic. In this paper, we compare three sequent calculi for bi-intuitionistic propositional logic: (1 a basic standard-style sequent calculus that restricts the premises of implication-right and exclusion-left inferences to be single-conclusion resp. single-assumption and is incomplete without the cut rule, (2 the calculus with nested sequents by Gore et al., where a complete class of cuts is encapsulated into special "unnest" rules and (3 a cut-free labelled sequent calculus derived from the Kripke semantics of the logic. We show that these calculi can be translated into each other and discuss the ineliminable cuts of the standard-style sequent calculus.

  11. Treatment of giant ureterocele calculi by Holmium Laser Lithotripsy

    OpenAIRE

    Haluk Söylemez; Bülent Altınoluk; Murat Y. Uğraş

    2009-01-01

    Aim: Most ureteral stones pass spontaneously. But patients who have a calculi in an ureterocele could not pass their stone, because of narrow ureteral orifice. These stones may remain asymptomatic until hematuria or obstruction occurs.Materials and Methods: Holmium laser has many uses in urology, including soft tissue incision and calculus fragmentation. These properties are ideal for endoscopic management of the ureterocele calculusResults: We present a young patient who has no spesific and ...

  12. [Renal staghorn calculi in small children - presentation of two cases].

    Science.gov (United States)

    Krzemień, Grażyna; Szmigielska, Agnieszka; Jankowska-Dziadak, Katarzyna; Pańczyk-Tomaszewska, Małgorzata

    2016-01-01

    Urolithiasis in children occurs with the incidence of 0.1-5%. Risk factors such as metabolic disorders, recurrent urinary tract infections and/or congenital abnormalities of urinary tract are detected in 75-85% of children with urolithiasis. Staghorn calculi is associated with delayed diagnosis and treatment of urinary tract infection caused by specific organisms, which produce the enzyme urease, promoting generation of ammonia and hydroxide from urea. We present two boys with staghorn calculi recognized in 8th and 31st month of age. The reason for performing ultrasonography was urinary tract infection in both boys. The younger child was previously healthy, with no symptoms of urolithiasis, the older one had recurrent urinary tract infections caused by Proteus mirabilis, episodes of anxiety and abdominal pain. Laboratory test and imaging studies excluded congenital abnormalities in the urinary tract and typical metabolic causes of urolithiasis in both boys. Treatment of infection-related stones in the younger child included two extracorporeal shock-wave lithotripsy (ESWL). In the older child, both ESWL and operation were performed. Staghorn calculi were composed of mixtures of magnesium ammonium phosphate (struvite) and calcium carbonate (apatite) and confirmed to be identified as infection-related stones. During follow-up in a nephrology outpatient clinic, values of blood pressure, renal ultrasonography, kidney function test were normal and no symptoms of urinary tract infections were clinically present. In patients with recurrent urinary tract infections, urolithiasis should be taken into consideration. The majority of staghorn calculi is often asymptomatic and can be diagnosed with an ultrasonography study performed routine or during urinary tract infection. PMID:27416622

  13. Conformal and Poincare tensor calculi in N=1 supergravity

    International Nuclear Information System (INIS)

    We present the superconformal tensor calculus for N=1 supergravity in a complete form; irreducible multiplets, their multiplication and embedding formulae and invariant action formulae. It is further clarified in detail how the various versions of N=1 Poincare supergravity (i.e. with different sets of auxiliary fields) are reproduced from the unique superconformal theory. The tensor calculi for all the known versions of Poincare supergravity are derived explicitly. (orig.)

  14. The efficacy of tamsulosin in lower ureteral calculi

    Directory of Open Access Journals (Sweden)

    Griwan M

    2010-01-01

    Full Text Available Context: There has been a paradigm shift in the management of ureteral calculi in the last decade with the introduction of new less invasive methods, such as ureterorenoscopy and extracorporeal shock wave lithotripsy (ESWL. Aims: Recent studies have reported excellent results with medical expulsive therapy (MET for distal ureteral calculi, both in terms of stone expulsion and control of ureteral colic pain. Settings and Design: We conducted a comparative study in between watchful waiting and MET with tamsulosin. Materials and Methods: We conducted a comparative study in between watchful waiting (Group I and MET with tamsulosin (Group II in 60 patients, with a follow up of 28 days. Statistical Analysis: Independent ′t′ test and chi-square test. Results: Group II showed a statistically significant advantage in terms of the stone expulsion rate. The mean number of episodes of pain, mean days to stone expulsion and mean amount of analgesic dosage used were statistically significantly lower in Group II (P value is 0.007, 0.01 and 0.007, respectively as compared to Group I. Conclusions: It is concluded that MET should be considered for uncomplicated distal ureteral calculi before ureteroscopy or extracorporeal lithotripsy. Tamsulosin has been found to increase and hasten stone expulsion rates, decrease acute attacks by acting as a spasmolytic, reduces mean days to stone expulsion and decreases analgesic dose usage.

  15. Unenhanced CT findings can predict the development of urinary calculi in stone-free patients

    International Nuclear Information System (INIS)

    To determine if calcium deposits in the papillae can be identified by unenhanced computed tomography (uCT) even before renal stones develop. A retrospective review of 413 patients with calculi identified 31 patients (stone-forming group) with a history of urinary tract calculi with a calculus demonstrated by uCT and a stone-free uCT before calculi had developed. The control group (n = 31) was composed of live kidney donors with no history of calculi and a stone-free uCT. CT attenuation was measured in all CTs using two regions of interest of 0.05 cm2 and 0.1 cm2 over the tip and the neighbouring area of the papillae. Student's and Wilcoxon t-tests were used for comparing results in the two groups. The attenuation of the tip of the papilla was higher in the stone-forming group when compared to the controls after (45.2 HU versus 32.1 HU, P = 0.001) and even before frank calculi had developed (44.2 HU versus 32.1 HU, P = 0.003). There was no significant difference in papillary attenuation in the stone group before and after calculi had developed (45.2 HU versus 44.2 HU, P = 0.82). Stone-forming patients exhibit higher papillary density even before calculi develop. This could define a population at risk of developing calculi. (orig.)

  16. Parotid and submandibular duct calculi in three successive generations of one family.

    OpenAIRE

    Bullock, K N

    1982-01-01

    A case is reported of chronic calculous parotitis beginning in a 12-month-old child. Further questioning revealed a history of parotid calculi in her mother and submandibular calculi in her maternal grandmother. The features which indicate the diagnosis of parotid calculous disease are discussed and, from a review of the literature, some observations are made on management.

  17. A Syntactic Correspondence between Context-Sensitive Calculi and Abstract Machines

    DEFF Research Database (Denmark)

    Biernacka, Malgorzata; Danvy, Olivier

    2005-01-01

    We present a systematic construction of environment-based abstract machines from context-sensitive calculi of explicit substitutions, and we illustrate it with ten calculi and machines for applicative order with an abort operation, normal order with generalized reduction and call/cc, the lambda-mu-calculus...

  18. A Syntactic Correspondence between Context-Sensitive Calculi and Abstract Machines

    DEFF Research Database (Denmark)

    Biernacka, Malgorzata; Danvy, Olivier

    2007-01-01

    We present a systematic construction of environment-based abstract machines from context-sensitive calculi of explicit substitutions, and we illustrate it with ten calculi and machines for applicative order with an abort operation, normal order with generalized reduction and call/cc, the lambda-mu-calculus...

  19. Psi-calculi: a framework for mobile processes with nominal data and logic

    CERN Document Server

    Bengtson, Jesper; Parrow, Joachim; Victor, Björn

    2011-01-01

    The framework of psi-calculi extends the pi-calculus with nominal datatypes for data structures and for logical assertions and conditions. These can be transmitted between processes and their names can be statically scoped as in the standard pi-calculus. Psi-calculi can capture the same phenomena as other proposed extensions of the pi-calculus such as the applied pi-calculus, the spi-calculus, the fusion calculus, the concurrent constraint pi-calculus, and calculi with polyadic communication channels or pattern matching. Psi-calculi can be even more general, for example by allowing structured channels, higher-order formalisms such as the lambda calculus for data structures, and predicate logic for assertions. We provide ample comparisons to related calculi and discuss a few significant applications. Our labelled operational semantics and definition of bisimulation is straightforward, without a structural congruence. We establish minimal requirements on the nominal data and logic in order to prove general alge...

  20. Papillary and Nonpapillary Calcium Oxalate Monohydrate Renal Calculi: Comparative Study of Etiologic Factors

    Directory of Open Access Journals (Sweden)

    Enrique Pieras

    2006-01-01

    Full Text Available Calcium oxalate monohydrate (COM renal calculi can be classified into two groups: papillary and nonpapillary. In this paper, a comparative study between etiologic factors of COM papillary and nonpapillary calculi is performed. The study included 40 patients with COM renal calculi. The urine of these individuals was analyzed. Case history, lifestyle, and dietetic habits were obtained.No significant differences between urinary biochemical data of both groups were observed; 50% of COM papillary stone formers and 40% of COM nonpapillary stone formers had urolithiasis family history. A low consumption of phytate-rich products was observed for both groups. A relationship between profession with occupational exposure to cytotoxic products and COM papillary renal lithiasis was detected.The results suggest that COM papillary calculi would be associated to papillary epithelium alterations together with a crystallization inhibitors deficit, whereas COM nonpapillary calculi would be associated to the presence of heterogeneous nucleants and a crystallization inhibitors deficit.

  1. Types of Renal Calculi and Management Regimen for Chinese Minimally Invasive Percutaneous Nephrolithotomy.

    Science.gov (United States)

    Gu, Si-Ping; Zeng, Guo-Hua; You, Zhi-Yuan; Lu, Yi-Jin; Huang, Yun-Teng; Wang, Qing-Mao; He, Zhao-Hui

    2015-12-01

    Strict selection of patients for minimally invasive percutaneous nephrolithotomy could effectively improve the success rate of surgery. This study aimed to understand the required skills and the efficacy of mini-PCNL in the treatment of five types of upper ureteral calculi. Data collected after X-ray analysis and B mode ultrasound from 633 patients with upper ureteral and renal pelvis calculi who underwent B ultrasound-guided lithotomy was reviewed, including the following: type I, upper ureteral or renal pelvis calculi with moderate hydronephrosis (154 cases); type II, upper ureteral or renal pelvis calculi with severe hydronephrosis (157 cases); type III, upper ureteral or renal pelvis calculi without hydronephrosis (61 cases); type IV, renal pelvis calculi, one or two renal calyx calculi (206 cases); and type V, renal staghorn calculi (55 cases). Operations on 611 cases were successful. The treatment method for five patients was converted to open surgery. Twelve cases were treated by indwelling double-J tube retro-catheterization and extracorporeal shock wave lithotripsy. Five patients gave up the treatment. The rate of calculus clearance was 82.3 %, and the rate of residual calculus was 17.6 %. Selective renal artery embolization was performed in nine cases. Hydropneumothorax occurred in nine cases. No intestinal fistula occurred, and no patient had to undergo nephrectomy. The difficulty and the curative effect of the operation were different because the types of calculi varied. Selection of the procedure based on the different types of calculi could effectively improve the success rate of the procedure, reduce complications, and shorten the learning curve.

  2. Types of Renal Calculi and Management Regimen for Chinese Minimally Invasive Percutaneous Nephrolithotomy.

    Science.gov (United States)

    Gu, Si-Ping; Zeng, Guo-Hua; You, Zhi-Yuan; Lu, Yi-Jin; Huang, Yun-Teng; Wang, Qing-Mao; He, Zhao-Hui

    2015-12-01

    Strict selection of patients for minimally invasive percutaneous nephrolithotomy could effectively improve the success rate of surgery. This study aimed to understand the required skills and the efficacy of mini-PCNL in the treatment of five types of upper ureteral calculi. Data collected after X-ray analysis and B mode ultrasound from 633 patients with upper ureteral and renal pelvis calculi who underwent B ultrasound-guided lithotomy was reviewed, including the following: type I, upper ureteral or renal pelvis calculi with moderate hydronephrosis (154 cases); type II, upper ureteral or renal pelvis calculi with severe hydronephrosis (157 cases); type III, upper ureteral or renal pelvis calculi without hydronephrosis (61 cases); type IV, renal pelvis calculi, one or two renal calyx calculi (206 cases); and type V, renal staghorn calculi (55 cases). Operations on 611 cases were successful. The treatment method for five patients was converted to open surgery. Twelve cases were treated by indwelling double-J tube retro-catheterization and extracorporeal shock wave lithotripsy. Five patients gave up the treatment. The rate of calculus clearance was 82.3 %, and the rate of residual calculus was 17.6 %. Selective renal artery embolization was performed in nine cases. Hydropneumothorax occurred in nine cases. No intestinal fistula occurred, and no patient had to undergo nephrectomy. The difficulty and the curative effect of the operation were different because the types of calculi varied. Selection of the procedure based on the different types of calculi could effectively improve the success rate of the procedure, reduce complications, and shorten the learning curve. PMID:27011473

  3. A rare entity in adults: Bilateral Hutch diverticulum with calculi.

    Science.gov (United States)

    Telli, Onur; Guclu, Adil Gucal; Haciyev, Perviz; Burgu, Berk; Gogus, Cagatay

    2015-01-01

    Congenital bladder diverticulum (CBD) is a very uncommon entity in adults. CBD could be unilateral or bilateral and is caused by a congenital weakness in the bladder musculature. CBD is differentiated from the paraureteral or Hutch type of diverticula. A 42-year-old male presented with bilateral Hutch diverticulum and multiple diverticulum calculus on intravenous pyelography. Cystoscopy revealed bladder diverticulum just medial to the left ureteral orifice with multiple calculi; the patient successfully underwent endoscopic laser cystolithotripsy with resolution of his urinary tract infection. To the best of our knowledge, this is the first case report presenting stone formation of CBD in an adult. PMID:26029313

  4. Ultrasonic fragmentation in the treatment of male urethral calculi.

    Science.gov (United States)

    Durazi, M H; Samiei, M R

    1988-11-01

    In the last 8 months, 7 patients have presented with acute retention of urine due to impacted urethral stones. Four stones were in the posterior urethra, 2 in the penile urethra and 1 proximal to the external urethral meatus. The patients were managed as emergencies. Stone fragmentation by ultrasound (US) through a 24F obliquely offset eyepiece nephroscope was achieved with minimal urethral trauma. Follow-up was for 6 months and no evidence of urethral stricture or recurrent stones was found. It was concluded that US fragmentation of urethral calculi is a safe and efficient procedure with minimal complications when used in the management of impacted urethral stones.

  5. How accurate is unenhanced multidetector-row CT (MDCT) for localization of renal calculi?

    Energy Technology Data Exchange (ETDEWEB)

    Goetschi, Stefan, E-mail: goetschi@gmx.net [Institute of Radiology, Triemli Hospital, Birmensdorferstrasse 497, 8063 Zuerich (Switzerland); Umbehr, Martin, E-mail: martin.umbehr@triemli.ch [Urology Clinic, Department of Surgery, Triemli Hospital, Birmensdorferstrasse 497, 8063 Zuerich (Switzerland); Ullrich, Stephan, E-mail: stephan.ullrich@triemli.ch [Institute of Radiology, Triemli Hospital, Birmensdorferstrasse 497, 8063 Zuerich (Switzerland); Glenck, Michael, E-mail: michael.glenck@triemli.ch [Institute of Radiology, Triemli Hospital, Birmensdorferstrasse 497, 8063 Zuerich (Switzerland); Suter, Stefan, E-mail: stefan.suter@triemli.ch [Urology Clinic, Department of Surgery, Triemli Hospital, Birmensdorferstrasse 497, 8063 Zuerich (Switzerland); Weishaupt, Dominik, E-mail: dominik.weishaupt@triemli.ch [Institute of Radiology, Triemli Hospital, Birmensdorferstrasse 497, 8063 Zuerich (Switzerland)

    2012-11-15

    Purpose: To investigate the correlation between unenhanced MDCT and intraoperative findings with regard to the exact anatomical location of renal calculi. Design, setting, and participants: Fifty-nine patients who underwent unenhanced MDCT for suspected urinary stone disease, and who underwent subsequent flexible ureterorenoscopy (URS) as treatment of nephrolithiasis were included in this retrospective study. All MDCT data sets were independently reviewed by three observers with different degrees of experience in reading CT. Each observer was asked to indicate presence and exact anatomical location of any calcification within pyelocaliceal system, renal papilla or renal cortex. Results were compared to intraoperative findings which have been defined as standard of reference. Calculi not described at surgery, but present on MDCT data were counted as renal cortex calcifications. Results: Overall 166 calculi in 59 kidneys have been detected on MDCT, 100 (60.2%) were located in the pyelocaliceal system and 66 (39.8%) in the renal parenchyma. Of the 100 pyelocaliceal calculi, 84 (84%) were correctly located on CT data sets by observer 1, 62 (62%) by observer 2, and 71 (71%) by observer 3. Sensitivity/specificity was 90-94% and 50-100% if only pyelocaliceal calculi measuring >4 mm in size were considered. For pyelocaliceal calculi {<=}4 mm in size diagnostic performance of MDCT was inferior. Conclusion: Compared to flexible URS, unenhanced MDCT is accurate for distinction between pyelocaliceal calculi and renal parenchyma calcifications if renal calculi are >4 mm in size. For smaller renal calculi, unenhanced MDCT is less accurate and distinction between a pyelocaliceal calculus and renal parenchyma calcification is difficult.

  6. How accurate is unenhanced multidetector-row CT (MDCT) for localization of renal calculi?

    International Nuclear Information System (INIS)

    Purpose: To investigate the correlation between unenhanced MDCT and intraoperative findings with regard to the exact anatomical location of renal calculi. Design, setting, and participants: Fifty-nine patients who underwent unenhanced MDCT for suspected urinary stone disease, and who underwent subsequent flexible ureterorenoscopy (URS) as treatment of nephrolithiasis were included in this retrospective study. All MDCT data sets were independently reviewed by three observers with different degrees of experience in reading CT. Each observer was asked to indicate presence and exact anatomical location of any calcification within pyelocaliceal system, renal papilla or renal cortex. Results were compared to intraoperative findings which have been defined as standard of reference. Calculi not described at surgery, but present on MDCT data were counted as renal cortex calcifications. Results: Overall 166 calculi in 59 kidneys have been detected on MDCT, 100 (60.2%) were located in the pyelocaliceal system and 66 (39.8%) in the renal parenchyma. Of the 100 pyelocaliceal calculi, 84 (84%) were correctly located on CT data sets by observer 1, 62 (62%) by observer 2, and 71 (71%) by observer 3. Sensitivity/specificity was 90–94% and 50–100% if only pyelocaliceal calculi measuring >4 mm in size were considered. For pyelocaliceal calculi ≤4 mm in size diagnostic performance of MDCT was inferior. Conclusion: Compared to flexible URS, unenhanced MDCT is accurate for distinction between pyelocaliceal calculi and renal parenchyma calcifications if renal calculi are >4 mm in size. For smaller renal calculi, unenhanced MDCT is less accurate and distinction between a pyelocaliceal calculus and renal parenchyma calcification is difficult.

  7. Percutaneous Endoscopic Holmium Laser Lithotripsy for Management of Complicated Biliary Calculi

    OpenAIRE

    Healy, Kelly; Chamsuddin, Abbas; Spivey, James; Martin, Louis; Nieh, Peter; Ogan, Kenneth

    2009-01-01

    Background and Objectives: Advances in endoscopic techniques have transformed the management of urolithiasis. We sought to evaluate the role of such urological interventions for the treatment of complex biliary calculi. Methods: We conducted a retrospective review of all patients (n=9) undergoing percutaneous holmium laser lithotripsy for complicated biliary calculi over a 4-year period (12/2003 to 12/2007). All previously failed standard techniques include ERCP with sphincterotomy (n=6), PTH...

  8. PA03.12. Role of stonvil capsule with varunadi kwath in renal & ureteric calculi

    OpenAIRE

    Khandare, Dnyaneshwar; ,

    2013-01-01

    Purpose: Now a day's Renal & Ureteric calculi is very common problem in our society. In this patient experiences so much Renal pain, Ureteric colic, Haematuria, Recurrent UTI & they disturbed his daily routine work. Modern Medicines have limitations to treat it & advised Surgery to many patients. A poor & middle class patient was not tolerating surgical expenses. And there were chances of recurrences also. So I thought to use combinations to dissolve renal & Ureteric calculi and cure patients...

  9. Notes on the differential calculi on quantum linear groups

    International Nuclear Information System (INIS)

    This talk is devoted to the problem of constructing differential calculi on quantum linear groups. Based on the natural algebraic postulates, we examine the possible commutation relations for the GLq(N)- and SLq(N)-invariant differential forms and vector fields. It turns out that there exist several families of admissible commutation rules for GLq(N), but, in contrast. the commutation prescription for SLq(N) is unique. The stochastic quantization of dissipative systems is discussed. It is shown that in order to stochastically quantize a sys- tem with dissipation, one has to restrict the Fourier transform of the space-time variable to the positive half domain in the complex plane. This breaks the time-reversal invariance, which manifests itself in the formulation through the re- sulting noninvaxiant forms for the propagators. The relation of the stochastic approach with the Caldeira and Leggett path-integral method is also analyzed

  10. Association between schizophrenia and urinary calculi: a population-based case-control study.

    Directory of Open Access Journals (Sweden)

    Shih-Ping Liu

    Full Text Available BACKGROUND: People with schizophrenia have been demonstrated to have higher overall morbidity and all-cause mortality rates from general medical conditions. However, little attention has been given to the urinary system of people with schizophrenia. As no direct evidence has been reported demonstrating a link between schizophrenia and urinary calculi, this study utilized a population-based case-control study design to investigate the possibility of an association between schizophrenia and the occurrence of urinary calculi. METHOD: This study used data from the Taiwan Longitudinal Health Insurance Database. Cases consisted of 53,965 urinary calculi patients newly diagnosed between 2002 and 2008. In total, 269,825 controls were randomly selected and matched with the cases in terms of age and sex. Each person was traced to discern whether he had previously received a diagnosis of schizophrenia. Conditional logistic regression models were performed for the analysis. RESULTS: A total of 3,119 (1.0% subjects had been diagnosed with schizophrenia prior to the index date. This included 0.7% of the patients with urinary calculi, and 1.0% of the controls. A prior diagnosis of schizophrenia was independently associated with a 30% decrease (95% CI = 0.62-0.76 in the occurrence of urinary calculi. The reduction was even more remarkable in males (38%, 95% CI = 0.55-0.71 and in elder individuals independent of gender (48% in those aged >69, 95% CI = 0.36-0.77. CONCLUSION: Our findings suggest that there is an inverse association between schizophrenia and urinary calculi. Future studies are needed to elucidate the mechanisms by which schizophrenia negatively associates with urinary calculi.

  11. Nondestructive analysis of urinary calculi using micro computed tomography

    Directory of Open Access Journals (Sweden)

    Lingeman James E

    2004-12-01

    Full Text Available Abstract Background Micro computed tomography (micro CT has been shown to provide exceptionally high quality imaging of the fine structural detail within urinary calculi. We tested the idea that micro CT might also be used to identify the mineral composition of urinary stones non-destructively. Methods Micro CT x-ray attenuation values were measured for mineral that was positively identified by infrared microspectroscopy (FT-IR. To do this, human urinary stones were sectioned with a diamond wire saw. The cut surface was explored by FT-IR and regions of pure mineral were evaluated by micro CT to correlate x-ray attenuation values with mineral content. Additionally, intact stones were imaged with micro CT to visualize internal morphology and map the distribution of specific mineral components in 3-D. Results Micro CT images taken just beneath the cut surface of urinary stones showed excellent resolution of structural detail that could be correlated with structure visible in the optical image mode of FT-IR. Regions of pure mineral were not difficult to find by FT-IR for most stones and such regions could be localized on micro CT images of the cut surface. This was not true, however, for two brushite stones tested; in these, brushite was closely intermixed with calcium oxalate. Micro CT x-ray attenuation values were collected for six minerals that could be found in regions that appeared to be pure, including uric acid (3515 – 4995 micro CT attenuation units, AU, struvite (7242 – 7969 AU, cystine (8619 – 9921 AU, calcium oxalate dihydrate (13815 – 15797 AU, calcium oxalate monohydrate (16297 – 18449 AU, and hydroxyapatite (21144 – 23121 AU. These AU values did not overlap. Analysis of intact stones showed excellent resolution of structural detail and could discriminate multiple mineral types within heterogeneous stones. Conclusions Micro CT gives excellent structural detail of urinary stones, and these results demonstrate the feasibility

  12. "THE ROLE OF HARDNESS OF POTABLE WATER IN THE FORMATION OF URINARY CALCULI IN UROMIEH, Iran"

    Directory of Open Access Journals (Sweden)

    K.Imandel

    1995-06-01

    Full Text Available The formation of renal and urinary calculi is not due to a single cause but occurs as a multifactor entity, by which some of them still are unknown. Three theories of Stones formation including nucleation, stone matrix and inhibition of crystallization do not accuse water hardness as a main cause of the formation of urinary calculi 120 patients suffering from renal and urinary calculi and the same number of control persons were studied in the city of Uromieh. The analysis of uroliths and water samples fulfilled the laboratory Standard methods Chi-square test was done on the results obtained The results of water analyses showed that the total hardness of Calcium and Magnesium were 300, 69, 32 mg/I as CaCo3 , TDS , 410 mg/I, electrical conductivity 600 us/cm and water classified as very hard. The abundance of uroliths were, oxalate, cystjne, uric acid infectious respectively, There was no statistical significant association between water hardness and urinary calculi of patients under study with respect to age and sex. The abundance blood groups in patients were A , 0 , AB and B respectively and the occurrence of 3 renal calculi mentioned above were more in men than Women The formation of renal stones were most occurred in summer season. The most abundant was calcium oxalate, the incidence was between the ages 30 to 50 years old and calcium stones were 2.7 times more in men than woman.

  13. The feasibility of using microwave-induced thermoacoustic tomography for detection and evaluation of renal calculi.

    Science.gov (United States)

    Cao, Caijun; Nie, Liming; Lou, Cunguang; Xing, Da

    2010-09-01

    Imaging of renal calculi is important for patients who suffered a urinary calculus prior to treatment. The available imaging techniques include plain x-ray, ultrasound scan, intravenous urogram, computed tomography, etc. However, the visualization of a uric acid calculus (radiolucent calculi) is difficult and often impossible by the above imaging methods. In this paper, a new detection method based on microwave-induced thermoacoustic tomography was developed to detect the renal calculi. Thermoacoustic images of calcium oxalate and uric acid calculus were compared with their x-ray images. The microwave absorption differences among the calcium oxalate calculus, uric acid calculus and normal kidney tissue could be evaluated by the amplitude of the thermoacoustic signals. The calculi hidden in the swine kidney were clearly imaged with excellent contrast and resolution in the three orthogonal thermoacoustic images. The results indicate that thermoacoustic imaging may be developed as a complementary method for detecting renal calculi, and its low cost and effective feature shows high potential for clinical applications.

  14. Matrix effects in PIXE elemental analysis of thick calculi targets

    Science.gov (United States)

    Kwiatek, Wojciech M.; Lekki, Janusz; Nowak, Tomasz; Dutkiewicz, Erazm M.; Paluszkiewicz, Czeslawa

    1997-02-01

    The PIXE technique for Trace Element Analysis have been applied to the studies of mineral deposits such as kidney stones in human organism. The calculi mainly composed of phosphates, oxalates and uric acid were extracted during surgical operations and were measured at the proton beam as thick targets. Trace elements studies of such samples are influenced by the thick targets matrix effects and by the sample composition changes caused by energy deposition in the target due to the proton beam irradiation. These both difficulties are especially pronounced in the case of the biological samples. In this paper the procedure dealing with the above problems is described, basing on calculations with the use of principal formula for the detected X-ray yields and two complementary techniques for PIXE experiments such as Fourier Transform InfraRed Spectroscopy (FTIR) and Elastic Back Scattering (EBS). A rough estimation of sample chemical composition was achieved by means of the FTIR analysis, which also may serve as a tool for local sample temperature estimation during beam irradiation. Composition of major target elements, needed for beam stopping and X-rays attenuation calculations were determined using the EBS technique applied simultaneously with PIXE. The above approach was used to estimate elemental contents of several samples. Comparison between traditionally calculated and improved results is presented.

  15. MEDICAL EXPULSIVE THERAPY OF URETERIC CALCULI - OUR EXPERIENCE

    Directory of Open Access Journals (Sweden)

    Ramesh

    2015-09-01

    Full Text Available INTRODUCTION: Uretric stones can be treated with multiple modalities including medical therapy, uretroscopy, shockwave lithotripsy (SWS, percutaneous nephrolithotomy, open/laparoscopic stone removal, and/or combinations of these modalities. The aim is to study the effectivene ss of medical management of uretric stones and to compare the effectiveness of Tamsulosin and Tamsulosin with steroid . MATERIALS & METHODS: 120 Patients who came with acute uretric colic were categorized into III categories of less than 5mm, 5mm to 7mm and more than 7mm based on NCCT. They were consecutively allotted to one of the three groups, the group I patients received Anti - Biotics with NSAIDs group II received Tamsulosin in addition Anti - Biotics and NSAIDs and III rd group received Anti - Biotics, Tamsu losin, NSAIDs in addition Deflazacart 30mg for a period of 10 days. The results were evaluated at the end of 10 days medical treatment. RESULTS : 90 out of 120 patients were re - evaluated at the end of 10 days. The calculi of 7mm should be removed as the chances of passage is <20%. The medical treatment with Tamsulosin or Tamsulosin with Deflazacart does not offer significant benefit.

  16. Computer-aided detection of renal calculi from noncontrast CT images using TV-flow and MSER features

    International Nuclear Information System (INIS)

    Purpose: Renal calculi are common extracolonic incidental findings on computed tomographic colonography (CTC). This work aims to develop a fully automated computer-aided diagnosis system to accurately detect renal calculi on CTC images. Methods: The authors developed a total variation (TV) flow method to reduce image noise within the kidneys while maintaining the characteristic appearance of renal calculi. Maximally stable extremal region (MSER) features were then calculated to robustly identify calculi candidates. Finally, the authors computed texture and shape features that were imported to support vector machines for calculus classification. The method was validated on a dataset of 192 patients and compared to a baseline approach that detects calculi by thresholding. The authors also compared their method with the detection approaches using anisotropic diffusion and nonsmoothing. Results: At a false positive rate of 8 per patient, the sensitivities of the new method and the baseline thresholding approach were 69% and 35% (p < 1e − 3) on all calculi from 1 to 433 mm3 in the testing dataset. The sensitivities of the detection methods using anisotropic diffusion and nonsmoothing were 36% and 0%, respectively. The sensitivity of the new method increased to 90% if only larger and more clinically relevant calculi were considered. Conclusions: Experimental results demonstrated that TV-flow and MSER features are efficient means to robustly and accurately detect renal calculi on low-dose, high noise CTC images. Thus, the proposed method can potentially improve diagnosis

  17. Computer-aided detection of renal calculi from noncontrast CT images using TV-flow and MSER features

    Energy Technology Data Exchange (ETDEWEB)

    Liu, Jianfei; Wang, Shijun; Turkbey, Evrim B.; Yao, Jianhua; Summers, Ronald M., E-mail: rms@nih.gov [Radiology and Imaging Sciences, National Institutes of Health Clinical Center, Bethesda, Maryland 20892-1182 (United States); Linguraru, Marius George [Sheikh Zayed Institute for Pediatric Surgical Innovation, Children’s National Health System Center, Washington, DC 20010 and School of Medicine and Health Sciences, George Washington University, Washington, DC 20010 (United States)

    2015-01-15

    Purpose: Renal calculi are common extracolonic incidental findings on computed tomographic colonography (CTC). This work aims to develop a fully automated computer-aided diagnosis system to accurately detect renal calculi on CTC images. Methods: The authors developed a total variation (TV) flow method to reduce image noise within the kidneys while maintaining the characteristic appearance of renal calculi. Maximally stable extremal region (MSER) features were then calculated to robustly identify calculi candidates. Finally, the authors computed texture and shape features that were imported to support vector machines for calculus classification. The method was validated on a dataset of 192 patients and compared to a baseline approach that detects calculi by thresholding. The authors also compared their method with the detection approaches using anisotropic diffusion and nonsmoothing. Results: At a false positive rate of 8 per patient, the sensitivities of the new method and the baseline thresholding approach were 69% and 35% (p < 1e − 3) on all calculi from 1 to 433 mm{sup 3} in the testing dataset. The sensitivities of the detection methods using anisotropic diffusion and nonsmoothing were 36% and 0%, respectively. The sensitivity of the new method increased to 90% if only larger and more clinically relevant calculi were considered. Conclusions: Experimental results demonstrated that TV-flow and MSER features are efficient means to robustly and accurately detect renal calculi on low-dose, high noise CTC images. Thus, the proposed method can potentially improve diagnosis.

  18. Proceedings Fourth Workshop on Membrane Computing and Biologically Inspired Process Calculi 2010

    CERN Document Server

    Ciobanu, Gabriel; 10.4204/EPTCS.40

    2010-01-01

    The 4th Workshop on Membrane Computing and Biologically Inspired Process Calculi (MeCBIC 2010) is organized in Jena as a satellite event of the Eleventh International Conference on Membrane Computing (CMC11). Biological membranes play a fundamental role in the complex reactions which take place in cells of living organisms. The importance of this role has been considered in two different types of formalisms introduced recently. Membrane systems were introduced as a class of distributed parallel computing devices inspired by the observation that any biological system is a complex hierarchical structure, with a flow of biochemical substances and information that underlies their functioning. The modeling and analysis of biological systems has also attracted considerable interest of the process algebra research community. Thus the notions of membranes and compartments have been explicitly represented in a family of calculi, such as ambients and brane calculi. A cross fertilization of these two research areas has ...

  19. First-order differential calculi over multi-braided quantum groups

    CERN Document Server

    Durdevic, M

    1996-01-01

    A differential calculus of the first order over multi-braided quantum groups is developed. In analogy with the standard theory, left/right-covariant and bicovariant differential structures are introduced and investigated. Furthermore, antipodally covariant calculi are studied. The concept of the *-structure on a multi-braided quantum group is formulated, and in particular the structure of left-covariant *-covariant calculi is analyzed. A special attention is given to differential calculi covariant with respect to the action of the associated braid system. In particular it is shown that the left/right braided-covariance appears as a consequence of the left/right-covariance relative to the group action. Braided counterparts of all basic results of the standard theory are found.

  20. PROSPECTIVE STUDY OF TAMSULOSIN IN THE MANAGEMENT OF CALCULI IN LOWER THIRD OF URETER

    Directory of Open Access Journals (Sweden)

    Arunabha

    2015-04-01

    Full Text Available INTRODUCTION: Urinary calculus disease is one of the 3 most common urological diseases . It affects about 12 % of the world population and has become a worldwide health problem . Of all the urinary tract stones 20% are ureteral stones , of which 70% are found in the lower third of ureter . Patients with ureteric calculi have wide range of complications which includes acute pain necessitating hospitalization , urinary tract infection , anuria , acute renal failure , chronic renal failure , hydronephrosis , pyonephrosis , pyelonephritis . The objective of the study is , t o study the effect of Tamsulosin in the passage of calculi in the lower one third of the ureter compared to NSAIDs and oral and IV fluids . MATERI AL AND METHOD: This study included a total of 82 patients between the study period from Nov 20 10 to May 201 3 . 42 patients were chosen randomly and advised to take plenty of oral fluids and treated with NSAIDs ( Diclofenac sodium and the other 40 patients w ere treated with Tamsulosin ( alpha blocker 0 . 4mg HS for one month along with oral fluids and NSAIDs ( Diclofenac sodium . RESULTS: Majority of the patients were in the age group of 20 - 40 yrs . The mean size of the calculus was 6 . 62 cms on the right side and 6 . 07 cms on the left side . Out of the 40 patients who were on alpha 1 blocker ( Tamsulosin 31 patients had passed the calculi and 9 patients had no results with a success rate of 77 . 5% . In the 42 patients who were not on Tamsulosin , 8 patients passed the calculi and 34 patients did not pass the calculi . 9 patients among the 42 underwent ureterorenoscopy ( URS . CONCLUSION : Tamsulosin is an effective and safe drug in the management of calculi in the lower 1/3 rd of the ureter . Most patients with ureteric calc uli were rendered stone free with endourological procedures if conservative treatment failed .

  1. US and MDCT findings in a caudal blind ending bifid ureter with calculi

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    Caglar Uzun

    2011-09-01

    Full Text Available Herein we present a rare ureteric duplication anomaly; blind ending bifid ureter with calculi which is asymptomatic unless complicated by infection, reflux, calculi or malignancy. The diagnosis is often missed at intravenous urography (IVU and US because the ipsilateral ureter and kidney are grossly normal. In this case the diagnosis was established with ultrasound (US and mainly with multidetector computerized tomography (MDCT imaging using multiplanar reformats and 3-D reconstructions which were unique to this case. MDCT scans not only revealed the exact diagnosis and anatomic relationships but also ruled out other pathologies included in the differential diagnosis as well, such as ureter and bladder diverticula.

  2. US and MDCT findings in a caudal blind ending bifid ureter with calculi

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    Evren Ustuner

    2011-11-01

    Full Text Available Herein we present a rare ureteric duplication anomaly; blind ending bifid ureter with calculi which is asymptomatic unless complicated by infection, reflux, calculi or malignancy. The diagnosis is often missed at intravenous urography (IVU and US because the ipsilateral ureter and kidney are grossly normal. In this case the diagnosis was established with ultrasound (US and mainly with multidetector computerized tomography (MDCT imaging using multiplanar reformats and 3-D reconstructions which were unique to this case. MDCT scans not only revealed the exact diagnosis and anatomic relationships but also ruled out other pathologies included in the differential diagnosis as well, such as ureter and bladder diverticula.

  3. Weak Convergence and Vector-Valued Functions: Improving the Stability Theory of Feynman's Operational Calculi

    International Nuclear Information System (INIS)

    In this paper we present a theorem that establishes a relation between continuous, norm-bounded functions from a metric space into a separable Hilbert space and weak convergence of sequences of probability measures on the metric space. After establishing this result, it's application to the stability theory of Feynman's operational calculi will be illustrated. We will see that the existing time-dependent stability theory of the operational calculi will be significantly improved when the operator-valued functions take their values in LH,H a separable Hilbert space

  4. Management of Ureteric Calculi in Dhule City of North-western Maharashtra

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    Lokesh Patni

    2013-01-01

    Full Text Available Background: Urolithiasis, usually affecting people in the prime of life, causes significant morbidity and loss of productivity. Uretericstones account for 2/3rd of all urinary calculi brought to attention of doctors. The damaging effects of the calculi may result in obstruction with dilatation of the urinary tract, leading to stasis and severe infection. Aims and Objectives: To evaluate patients with urinary stones with regards to the incidence, age, sex,clinical presentation, site, size, side, management and their complications. Material and Methods:It was a prospective study carried out by Department of Surgery at Annasaheb Chudaman Patil Memorial Medical College, and Hospital Dhule for a period of two years. Patients were selected after they were diagnosed as having ureteric calculi. The patients were treated by conservative or surgical methods, and the outcome was monitored. Statistical analysis of the data was done for obtaining results.Result: The majority of the patients were males with peak age group in the second and third decade. Pain in abdomen or loin tenderness was the most common presenting symptom. Most of the patients were treated by conservative medical management. Endourological procedures were the most commonly performed surgical intervention. Conclusion: Most of the patients with ureteric calculi present with painin abdomen and majority can be treated by medical management. With the availability of better facilities the requirement for open surgery is decreasing and endourological procedures are becoming the means of surgical intervention.Complications are minimal with surgical expertise for endourological procedures.

  5. From exponential coordinates to bicovariant differential calculi on matrix quantum groups

    NARCIS (Netherlands)

    Hijligenberg, N.W. van den; Martini, R.

    1995-01-01

    A procedure to obtain bicovariant differential calculi on matrix quantum groups is presented. The construction is based on the description of the matrix quantum group as a quantized universal enveloping algebra by the use of exponential coordinates. The procedure is illustrated by applying it to the

  6. Robotic extended pyelolithotomy for treatment of renal calculi: a feasibility study.

    Science.gov (United States)

    Badani, Ketan K; Hemal, Ashok K; Fumo, Michael; Kaul, Sanjeev; Shrivastava, Alok; Rajendram, Arumuga Kumar; Yusoff, Noor Ashani; Sundram, Murali; Woo, Susan; Peabody, James O; Mohamed, Sahabudin Raja; Menon, Mani

    2006-06-01

    Percutaneous nephrolithotomy (PCNL) remains the treatment of choice for staghorn renal calculi. Many reports suggest that laparoscopy can be an alternative treatment for large renal stones. We wished to evaluate the role and feasibility of laparoscopic extended pyelolithotomy (REP) for treatment of staghorn calculi. Thirteen patients underwent REP for treatment of staghorn calculi over a 12-day period. Twelve patients had partial staghorn stones and one had a complete staghorn stone. All patients had pre-operative and post-operative imaging including KUB and computed tomography. All procedures were completed robotically without conversion to laparoscopy or open surgery. Mean operative time was 158 min and mean robotic console time was 108 min. Complete stone removal was accomplished in all patients except the one with a complete staghorn calculus. Estimated blood loss was 100 cc, and no patient required post-operative transfusion. REP is an effective treatment alternative to PCNL in some patients with staghorn calculi. However, patients with complete staghorn stones are not suitable candidates for this particular technique. PMID:16758250

  7. Renal colic: comparison of spiral CT, US and IVU in the detection of ureteral calculi

    Energy Technology Data Exchange (ETDEWEB)

    Yilmaz, S.; Sindel, T.; Arslan, G.; Oezkaynak, C.; Karaali, K.; Kabaalioglu, A.; Lueleci, E. [Department of Radiology, Akdeniz University Medical Faculty, Arapsuyu, Antalya (Turkey)

    1998-03-01

    The aim of our study was to compare noncontrast spiral CT, US and intravenous urography (IVU) in the evaluation of patients with renal colic for the diagnosis of ureteral calculi. During a period of 17 months, 112 patients with renal colic were examined with spiral CT, US and IVU. Fifteen patients were lost to follow-up and excluded. The remaining 97 patients were defined to be either true positive or negative for ureterolithiasis based on the follow-up data. Sensitivity, specificity, positive and negative predictive value and accuracy of spiral CT, US and IVU were determined, and secondary signs of ureteral stones and other pathologies causing renal colic detected with these modalities were noted. Of 97 patients, 64 were confirmed to have ureteral calculi based on stone recovery or urological interventions. Thirty-three patients were proved not to have ureteral calculi based on failure to recover a stone and diagnoses unrelated to ureterolithiasis. Spiral CT was found to be the best modality for depicting ureteral stones with a sensitivity of 94 % and a specificity of 97 %. For US and IVU, these figures were 19, 97, 52, and 94 %, respectively. Spiral CT is superior to US and IVU in the demonstration of ureteral calculi in patients with renal colic, but because of its high cost, higher radiation dose and high workload, it should be reserved for cases where US and IVU do not show the cause of symptoms. (orig.) With 4 figs., 3 tabs., 12 refs.

  8. Disintegration of urinary calculi by laser beam: drilling experiment in extracted urinary stones.

    Science.gov (United States)

    Tanahashi, Y; Orikasa, S; Chiba, R; Tahira, K; Fukatsu, T; Miyakawa, T

    1979-06-01

    Disintegration of urinary calculi was attempted by the use of laser beam. As a first step, drilling of extracted urinary stones was attempted using a continuous wave CO2 laser and a pulse ruby laser. Stones were drilled easily by either laser beam. The power around 10 W of continuous CO2 laser beam was sufficient to drill through the stone. PMID:462477

  9. Ureteropyeloscopy and homium: YAG laser lithotripsy for treatment of ureteral calculi (report of 356 cases)

    Science.gov (United States)

    Wu, Zhong; Din, Qiang; Jiang, Hao-wen; Zen, Jing-cun; Yu, Jiang; Zhang, Yuanfang

    2005-07-01

    Objective: To evaluate the efficacy and safety of holmium YAG laser lithotripsy for the treatment of ureteral calculi. Methods: A total of 356 patients underwent ureteropyeloscopic lithotripsy using holmium YAG laser with a semirigid uretesopyeloscope, 93 upper, 135 middle, and 128 lower ureteral stones were treated. Results: The overall successful fragmentation rate for all ureteral stones in a single session achieved 98% (349/356). The successful fragmentation rate stratified by stone location was 95% 88/93 in the upper ureter, 99% (134/135) in the mid ureter , and 99%(127/128) in the distal ureter. 12 cases with bilateral ureteral stones which caused acute renal failure and anuria were treated rapidly and effectively by the holmium YAG laser lithotripsy. No complications such as perforation and severe trauma were encountered during the operations. 2 weeks 17months (with an average of 6.8 month ) follow up postoperatively revealed that the overall stone-free rate was 98%(343/349) and no ureteral stenosis was found. Conclusions Holmium YAG laser lithotripsy is a highly effective, minimally invasive and safe therapy for ureteral calculi. It is indicated as a first choice of treatment for patients with ureteral calculi, especially for the ones with mid- lower levels of ureteral calculi.

  10. Successful Management of Repetitive Urinary Obstruction and Anuria Caused by Double J Stent Calculi Formation after Renal Transplantation

    Directory of Open Access Journals (Sweden)

    Zongyao Hao

    2014-01-01

    Full Text Available This report firstly describes an extremely rare case of repetitive double J stent calculi formation after renal transplantation caused by the antihyperparathyroidism (HPT drug calcitriol. In 2012, a woman initially presented to our hospital for anuria with lower abdominal pain. She was diagnosed with allograft hydronephrosis and double J stents obstruction by calculi formation after transplantation and treated with triplicate stents replacements in another hospital without clinical manifestations improvements. Through detailed exploration of medical history, we conclude that the abnormal calculi formation is due to the calcitriol (1,25-dihydroxyvitamin D3 administration, a drug which can increase renal tubular reabsorption of calcium for treating posttransplant HPT bone disease. After discontinuing calcitriol, the patient was stone-free and had a good recovery without severe complications during the 9-month follow-up. Our novel findings may provide an important clue and approach to managing formidable repetitive double J stent calculi formation in the clinical trial.

  11. Comparative study of minimally invasive endoscopic surgery and extracorporeal shock wave lithotripsy (ESWL) for proximal ureteral calculi in pilots

    OpenAIRE

    Guo, He-Qing; Li, Jian-Ye; Zhou, Gao-Biao; Mu, Da-Wei; Jing-min YAN; Wang, Guang-Feng; Sun, Bin; Liu, Hong-Ming; Ji-zhang XING; Hong, Quan

    2014-01-01

    Objective To observe and compare the therapeutic effect of extracorporeal shock wave lithotripsy (ESWL) and minimally invasive endoscopic surgery (URL/PCNL) for proximal urinary calculi in pilots. Methods A retrospective analysis was conducted for the clinical data of 115 pilots who had received ESWL, URL and PCNL for the treatment of proximal urinary tract calculi from Sep, 2005 to Sep, 2012. The patients were divided into two groups according to the way of treatment: ESWL group (n=83) and U...

  12. Robust detection of renal calculi from non-contract CT images using TV-flow and MSER features

    Science.gov (United States)

    Liu, Jianfei; Wang, Shijun; Linguraru, Marius George; Summers, Ronald M.

    2013-03-01

    Renal calculi are one of the most painful urologic disorders causing 3 million treatments per year in the United States. The objective of this paper is the automated detection of renal calculi from CT colonography (CTC) images on which they are one of the major extracolonic findings. However, the primary purpose of the CTC protocols is not for the detection of renal calculi, but for screening of colon cancer. The kidneys are imaged with significant amounts of noise in the non-contrast CTC images, which makes the detection of renal calculi extremely challenging. We propose a computer-aided diagnosis method to detect renal calculi in CTC images. It is built on three novel techniques: 1) total variation (TV) flow to reduce image noise while keeping calculi, 2) maximally stable extremal region (MSER) features to find calculus candidates, 3) salient feature descriptors based on intensity properties to train a support vector machine classifier and filter false positives. We selected 23 CTC cases with 36 renal calculi to analyze the detection algorithm. The calculus size ranged from 1.0mm to 6.8mm. Fifteen cases were selected as the training dataset, and the remaining eight cases were used for the testing dataset. The area under the receiver operating characteristic curve (AUC) values were 0.92 in the training datasets and 0.93 in the testing datasets. The testing dataset confidence interval for AUC reported by ROCKIT was [0.8799, 0.9591] and the training dataset was [0.8974, 0.9642]. These encouraging results demonstrated that our detection algorithm can robustly and accurately identify renal calculi from CTC images.

  13. PHARMACOLOGICAL SCREENING OF MUSA PARADISICA LINN AGAINST ETHYLENE GLYCOL INDUCED RENAL CALCULI

    Directory of Open Access Journals (Sweden)

    Jha U

    2011-03-01

    Full Text Available The effect of ethanol extract of dried roots of Musa paradisica Linn against ethylene glycol induced renal calculi in albino wistar rats are studied in this research. A renal calculus was induced in rats by ingesting 0.75% ethylene glycol in drinking water for 28 days and was manifested by high urinary calcium, oxalate, and low urinary magnesium contents. Simultaneous administration of 1ml (1 in 10 Musa paradisica Linn orally for 28 days along with ethylene glycol (0.75% v/v reduced urinary calcium, oxalate and elevated urinary magnesium level. It also increased urinary volume thereby reducing the tendency for crystallization. The histopathological studies confirmed the induction as degenerated glomeruli, necrotic tubule and inflammatory cells was observed in section of kidney from animals treated with ethylene glycol. This was reduced; however after treatment with Musa paradisica Linn. These observations enable to conclude that Musa paradisica Linn is effective against ethylene glycol induced renal calculi.

  14. Trace element studies in urolithiasis; preliminary investigation on mixed calcium oxalate-struvite urinary calculi

    International Nuclear Information System (INIS)

    In this study the levels of the trace elements copper , zinc, lead, iron, aluminum, nickel, chromium along with magnesium, sodium and potassium were estimated in fifteen mixed calcium oxalate-struvite (CaOx/STR) urinary stones. The mean values of the combined results were, copper 4.24, zinc 1302, zinc 1302.10, lead 23.25, iron 36.83,nickel 0.69, chromium 1.93, magnesium 4530441, sodium 54.13 and potassium 5.93 ng mg/sup -1/. It was observed that zinc, aluminum and potassium levels were higher than in calcium oxalate(CaOx) calculi 0.05>P>0.02 and potassium levels were higher than in mixed calcium oxalate-hydroxy appetite (CaOx/APA) calculi, P<0.01. A combination of all the results was also compared with similar data from South Africa, Turkey, Austria, India, U.S.A and Japan. (author)

  15. Cystic calculi removal in African spurred Tortoise (Geochelone sulcata using transplstron coeliotomy

    Directory of Open Access Journals (Sweden)

    Azlan Che' Amat

    Full Text Available The present report was carried out to manage a case of calculi in the bladder of African spurred tortoise. A 6 year old African spurred tortoise presented with history of anorexia and whitish discharged from the vent. Upon physical examination, the tortoise were 10% dehydrated, hindlegs muscle wasting and whitish materials came out from the vent. Plain radiograph revealed increased radiopacity in the bladder and also both right and left kidney. Contrast gastrointestinal radiograph showed less possibility of foreign body. Inconclusive radiological findings required the decision to proceed with exploratory transplastron coeliotomy by using dental burr. About 4 cm solid, hard whitish mass was removed from the bladder and both kidney was congested with whitish material. The findings were suggestive for urates crystal calculi based on histology result. [Vet. World 2012; 5(8.000: 489-492

  16. Swapping: a natural bridge between named and indexed explicit substitution calculi

    CERN Document Server

    Mendelzon, Ariel; Ziliani, Beta; 10.4204/EPTCS.49.1

    2011-01-01

    This article is devoted to the presentation of lambda_rex, an explicit substitution calculus with de Bruijn indexes and a simple notation. By being isomorphic to lambda_ex - a recent formalism with variable names -, lambda_rex accomplishes simulation of beta-reduction (Sim), preservation of beta-strong normalization (PSN) and meta-confluence (MC), among other desirable properties. Our calculus is based on a novel presentation of lambda_dB, using a swap notion that was originally devised by de Bruijn. Besides lambda_rex, two other indexed calculi isomorphic to lambda_x and lambda_xgc are presented, demonstrating the potential of our technique when applied to the design of indexed versions of known named calculi.

  17. SAFETY AND EFFICACY OF PERCUTANEOUS NEPHROLITHOTOMY IN INFANTS PRESENTING WITH OBSTRUCTIVE RENAL CALCULI AND ANURIA

    Directory of Open Access Journals (Sweden)

    Yugesh

    2015-04-01

    Full Text Available BACKGROUND : Urolithiasis in infancy is rare but important health issue. Etiology is multi factorial . Optimal management of pediatric stone disease is still evolving . Infants with bilateral obstructive renal stones are unique group of patients in whom prompt evaluation and management is necessary. AI MS AND OBJECTIVE: To evaluate safety and efficacy of PCNL in infants presenting with bilateral obstructive renal calculi and anuria . MATERIALS AND METHOD S: From N ov . 2012 to M arch 2014, 18 renal units with calculi in 9 infants (6 boys, 3 girls were treated with PCNL ( P ercutaneous N ephrolithotomy at our institution. All infants presented with anuria, rised serum creatinin (mean 6.1mg/dl and uremic symptoms due to bilateral obstructive renal calculi. All patients managed initially with peritoneal dialysis a t nephrology u nit, followed by bilateral DJ (D ouble J stenting, then bilateral PCNL performed in two sittings. Mean age 8.5 months (4m to 12m, mean stone burden 1.7 cm (0.6cm to 3.0 cm, 20 F pediatric nephroscope through 22F percutaneous access was used . Stones were fragmented with pneumatic lithotripter. RESULTS: Mean operative time was 60.22 mins (30 mins to 90 mins. Complete stone clearance was done in all cases without need for second look PCNL. Mean post op serum creatinin is 0.6 mg/dl. No patient r equired blood transfusion, developed urosepsis, or had a procedure related complications. CONCLUSION: When performed by experienced urologists, PCNL is safe and effective procedure in infants presenting with bilateral obstructive renal calculi and anuria, provided these patients managed preoperatively with peritoneal dialysis and DJ stenting to optimise renal function and to relieve sepsis.

  18. Efficacy of retrograde ureteropyeloscopic holmium laser lithotripsy for intrarenal calculi >2 cm.

    Science.gov (United States)

    Bader, M J; Gratzke, C; Walther, S; Weidlich, P; Staehler, M; Seitz, M; Sroka, R; Reich, O; Stief, C G; Schlenker, B

    2010-10-01

    The objectives of this study are to assess the efficacy and safety of retrograde ureteroscopic holmium laser lithotripsy for intrarenal calculi greater than 2 cm in diameter. A total of 24 patients with a stone burden >2 cm were treated with retrograde ureteroscopic laser lithotripsy. Primary study endpoints were number of treatments until the patient was stone free and perioperative complications with a follow-up of at least 3 months after intervention. In 24 patients (11 women and 13 men, 20-78 years of age), a total of 40 intrarenal calculi were treated with retrograde endoscopic procedures. At the time of the initial procedure, calculi had an average total linear diameter of 29.75 ± 1.57 mm and an average stone volume of 739.52 ± 82.12 mm(3). The mean number of procedures per patient was 1.7 ± 0.8 (range 1-3 procedures). The overall stone-free rate was 92%. After 1, 2 and 3 procedures 54, 79 and 92% of patients were stone free, respectively. There were no major complications. Minor postoperative complications included pyelonephritis in three cases (7.5%), of whom all responded immediately to parenteral antibiotics. In one patient the development of steinstrasse in the distal ureter required ureteroscopic fragment disruption and basketing. Ureteroscopy with holmium laser lithotripsy represents an efficient treatment option and allows the treatment of large intrarenal calculi of all compositions and throughout the whole collecting system even for patients with a stone burden of more than 2 cm size. PMID:20204341

  19. Towards a Theory of Bisimulation for the Higher-Order Process Calculi

    Institute of Scientific and Technical Information of China (English)

    Yong-JianLi; Xin-XinLiu

    2004-01-01

    In this paper, a labelled transition semantics for higher-order process calculi is studied. The labelled transition semantics is relatively clean and simple, and corresponding bisimulation equivalence can be easily formulated based on it. And the congruence properties of the bisimulation equivalence can be proved easily. To show the correspondence between the proposed semantics and the well-established ones, the bisimulation is characterized as a version of barbed equivalence and a version of context bisimulation.

  20. Towards a Theory of Bisimulation for the Higher-Order Process Calculi

    Institute of Scientific and Technical Information of China (English)

    Yong-Jian Li; Xin-Xin Liu

    2004-01-01

    In this paper, a labelled transition semantics for higher-order process calculi is studied. The labelled transition semantics is relatively clean and simple, and corresponding bisimulation equivalence can be easily formulated based on it. And the congruence properties of the bisimulation equivalence can be proved easily.To show the correspondence between the proposed semantics and the well-established ones, the bisimulation is characterized as a version of barbed equivalence and a version of context bisimulation.

  1. Simulation of a bounded symport/antiport P system with Brane calculi.

    Science.gov (United States)

    Vitale, Antonio; Mauri, Giancarlo; Zandron, Claudio

    2008-03-01

    Membrane systems (also called P systems) and Brane calculi have been recently introduced as formal models inspired by the structure and the functioning of living cells, but having in mind different goals. The aim of Membrane systems was the formal investigation of the computational nature and power of various features of the cell, while Brane calculi aims to define a model capable of a faithful and intuitive representation of various biological processes. The common background of the two formalisms and the recent growing of interests in applying P systems in Systems Biology have raised the natural question of bridging this two research areas. The present paper goes in this direction, as it presents a direct simulation of a variant of P systems by means of Brane calculi. In particular, we consider a Brane calculus based on three operations called Mate/Bud/Drip, and we show how to use such system to simulate Simple symport/antiport P systems, a variant of P systems purely based on communication of objects. As an example, a simplified sodium-potassium pump modeled in Simple SA is encoded in Mate/Bud/Drip Brane calculus. PMID:17889992

  2. CT urograms in pediatric patients with ureteral calculi: do adult criteria work?

    Energy Technology Data Exchange (ETDEWEB)

    Smergel, E.; Greenberg, S.B.; Crisci, K.L.; Salwen, J.K. [Dept. of Radiology, St. Christopher' s Hospital for Children, Philadelphia, PA (United States)

    2001-10-01

    Background: Secondary signs of urinary obstruction associated with ureteral calculi are useful adjuncts to diagnosis in adults with renal colic evaluated by unenhanced helical CT. Objective: Our purpose was to evaluate the frequency of secondary signs of obstruction in children with renal colic undergoing unenhanced helical CT. Materials and methods: Ureteral calculi were identified in 20 of 61 children with acute flank pain examined by unenhanced helical CT. Each imaging study was evaluated for the presence of secondary signs of urinary obstruction. The frequencies of individual signs were compared with each other by means of the McNemar test. Results: Six children had no secondary sign identified. In the remaining 14 children, proximal ureteral dilatation was seen in 10, renal enlargement in 10, hydronephrosis in 9, tissue rim sign in 6, decreased kidney attenuation in 5, and perinephric stranding in 1. Comparison of the frequencies strongly suggested that perinephric stranding occurs less frequently than proximal ureteral dilatation (P = 0.004), hydronephrosis (P = 0.008), or renal enlargement (P = 0.012). Conclusion: Perinephric stranding, a common secondary sign in adults with ureteral calculi, occurs less frequently in children than other reported secondary signs. (orig.)

  3. The Comparison of Ultrasonography and Non Enhanced Helical Computed Tomography in the Diagnosis of Ureteral Calculi

    Directory of Open Access Journals (Sweden)

    İlhan Kılınç

    2007-01-01

    Full Text Available Intravenous urography, ultrasonography, and non-contrast spiral computed tomography have been used to diagnose ureteral calculi. We aimed to compare the accuracy of non-contrast spiral computed tomography with ultrasonography in the evaluation of patients with renal colic.Fourty-one patients with flank pain were examined with both computed tomography and ultrasonography over a period of 11 months. Findings of ultrasonography and computed tomography of 28 patients in whom üreteral stones were confirmed by standart methods were comparedUreteral calculi were diagnosed in 28 of 41 patients. Ureteral stones could be demonstrated in 18 patients by ultrasonography and in 27 patients by computed tomography. Ultrasonography showed 64.3% sensitivity and 100% specificity in the diagnosis of ureterolithiasis; computed tomography showed 96.4% and 100%, respectively. Spiral computed tomography is superior to ultrasonography in the demonstration of ureteral calculi in patients with renal colic. But because of higher cost and higher radiation dose, it should be reserved for symptomatic cases in whom ultrasonography is non-diagnostic.

  4. Dual-energy CT for the evaluation of urinary calculi: Image interpretation, pitfalls and stone mimics

    International Nuclear Information System (INIS)

    Urolithiasis is a common disease with a reported prevalence between 4% and 20% in developed countries. Determination of urinary calculi composition is a key factor in preoperative evaluation, treatment, and stone recurrence prevention. Prior to the introduction of dual-energy computed tomography (DECT), available methods for determining urinary stone composition were only available after stone extraction, and thereby unable to aid in optimized stone management prior to intervention. DECT utilizes the attenuation difference produced by two different x-ray energy spectra to quantify urinary calculi composition as uric acid or non-uric acid (with likely further classification in the future) while still providing the information attained with a conventional CT. Knowledge of DECT imaging pitfalls and stone mimics is important, as the added benefit of dual-energy analysis is the determination of stone composition, which in turn affects all aspects of stone management. This review briefly describes DECT principles, scanner types and acquisition protocols for the evaluation of urinary calculi as they relate to imaging pitfalls (inconsistent characterization of small stones, small dual-energy field of view, and mischaracterization from surrounding material) and stone mimics (drainage devices) that may adversely impact clinical decisions. We utilize our clinical experience from scanning over 1200 patients with this new imaging technique to present clinically relevant examples of imaging pitfalls and possible mechanisms for resolution

  5. AN UNASCENDED RIGHT KIDNEY WITH LEFT SIDED URETERIC CALCULI: A CADAVERIC CASE REPORT

    Directory of Open Access Journals (Sweden)

    Meril Ann Soman

    2014-06-01

    Full Text Available Anomalies of the urinary system constitute approximately 30% of all the congenital malformations. There are various associated anomalies involving number, size, shape, position and vascularity of the kidneys. Unascended kidneys refers to a halt in the migration of the kidneys during their normal embryological development. Defect in the ascent of the kidneys are closely related with variations in the branching pattern of aorta. Here we report a case of an unilateral unascended right kidney in a male cadaver encountered during routine medical dissection. A left sided ureteric calculi was also seen as an incidental finding in the same cadaver. Ureterolithiasis occurs worldwide in all sets of population with 80% of the stones found in the male sex in the age group of 30- 60 years. There are various factors which favour the formation of ureteric calculi which includes geographical, socio-economical as well as the mineral content of water consumed and some general medical causes. An attempt has been made to document the causes for this variation and the preventive measures that can be adopted to prevent the formation of ureteric calculi.

  6. Extracorporeal shock wave lithotripsy of urinary calculi. Results from the first 306 patients treated at the Copenhagen Municipal Stone Center with a second generation lithotriptor

    DEFF Research Database (Denmark)

    Andersen, J T; Mogensen, P

    1991-01-01

    The first Danish experience with Extracorporeal Shock Wave Lithotripsy (ESWL) using a second generation Lithotriptor (Siemens Lithostar) is reported. 306 patients underwent 392 treatments for 363 stones. There were 339 renal calculi including 5 staghorn calculi and 54 ureteral calculi. Treatments...... and 11 patients had residual stones removed at open surgery. The used second generation lithotriptor with X-ray based stone localisation is effective for treatment of both renal calculi and ureteral calculi in situ in all three segments of the ureter.......The first Danish experience with Extracorporeal Shock Wave Lithotripsy (ESWL) using a second generation Lithotriptor (Siemens Lithostar) is reported. 306 patients underwent 392 treatments for 363 stones. There were 339 renal calculi including 5 staghorn calculi and 54 ureteral calculi. Treatments...... were performed under local analgesia (82%) or epidural or general anesthesia (18%) when invasive procedures had to be done in connection with the treatment. Stone fragmentation was achieved with 2487 +/- 1262 shocks. The first months stone clearance rate was 45%; 26% had fragments less than 6 mm; 29...

  7. Dual-energy CT for the characterization of urinary calculi: In vitro and in vivo evaluation of a low-dose scanning protocol

    Energy Technology Data Exchange (ETDEWEB)

    Thomas, C. [University of Tuebingen, Department of Diagnostic and Interventional Radiology, Tuebingen (Germany); Department of Diagnostic and Interventional Radiology, Tuebingen (Germany); Patschan, O.; Nagele, U.; Stenzl, A. [University of Tuebingen, Department of Urology, Tuebingen (Germany); Ketelsen, D.; Tsiflikas, I.; Reimann, A.; Brodoefel, H.; Claussen, C.; Kopp, A.; Heuschmid, M.; Schlemmer, H.P. [University of Tuebingen, Department of Diagnostic and Interventional Radiology, Tuebingen (Germany); Buchgeister, M. [University of Tuebingen, Medical Physics, Department of Radiation Oncology, Tuebingen (Germany)

    2009-06-15

    The efficiency and radiation dose of a low-dose dual-energy (DE) CT protocol for the evaluation of urinary calculus disease were evaluated. A low-dose dual-source DE-CT renal calculi protocol (140 kV, 46 mAs; 80 kV, 210 mAs) was derived from the single-energy (SE) CT protocol used in our institution for the detection of renal calculi (120 kV, 75 mAs). An Alderson-Rando phantom was equipped with thermoluminescence dosimeters and examined by CT with both protocols. The effective doses were calculated. Fifty-one patients with suspected or known urinary calculus disease underwent DE-CT. DE analysis was performed if calculi were detected using a dedicated software tool. Results were compared to chemical analysis after invasive calculus extraction. An effective dose of 3.43 mSv (male) and 5.30 mSv (female) was measured in the phantom for the DE protocol (vs. 3.17/4.57 mSv for the SE protocol). Urinary calculi were found in 34 patients; in 28 patients, calculi were removed and analyzed (23 patients with calcified calculi, three with uric acid calculi, one with 2,8-dihyxdroxyadenine-calculi, one patient with a mixed struvite calculus). DE analysis was able to distinguish between calcified and non-calcified calculi in all cases. In conclusion, dual-energy urinary calculus analysis is effective also with a low-dose protocol. The protocol tested in this study reliably identified calcified urinary calculi in vivo. (orig.)

  8. Targeted dual-energy single-source CT for characterisation of urinary calculi: experimental and clinical experience

    Energy Technology Data Exchange (ETDEWEB)

    Eiber, Matthias; Holzapfel, Konstantin; Rummeny, Ernst J.; Dobritz, Martin; Huber, Armin [Technische Universitaet Muenchen, Institute of Radiology, Klinikum rechts der Isar, Munich (Germany); Frimberger, Markus; Straub, Michael [Technische Universitaet Muenchen, Department of Urology, Munich (Germany); Schneider, Heike [Technische Universitaet Muenchen, Institute of Clinical Chemistry and Pathobiochemistry, Munich (Germany)

    2012-01-15

    To assess the accuracy of targeted dual-energy single-source multi-detector CT (MDCT) for characterisation of urinary calculi. For proof of principle, 71 ex-vivo calculi underwent single-source 256-slice MDCT. Low-dose CT was performed in 154 patients with suspected urinary calculi. In 104 patients with urinary calculi targeted dual-energy imaging within one breath-hold was added. 46 patients with sufficient material for infrared-spectroscopy were analysed. Potential anatomical misregistrations between 80- and 140-kV{sub p}-images and HU-values were measured. DEIs (dual-energy-indices) were compared with the standard of reference. Effective doses were calculated. In 26 of 46 patients no misregistration was present. Mean deviations were 2.7 mm in the z-axis (16 patients) and 4.3 mm in the axial plane (10 patients). The DEIs were 0.018 {+-} 0.016 for uric acid (UA), 0.035 {+-} 0.015 for mixed UA and 0.102 {+-} 0.015 for calcified stones in-vitro and 0.017 {+-} 0.002 for UA, 0.050 {+-} 0.019 for mixed UA and 0.122 {+-} 0.024 for calcified calculi in-vivo. Significant differences were noted among calcium, mixed UA and UA stones (p < 0.05). For the low-dose examination mean effective dose was 3.11 mSv. Targeted dual-energy resulted in an extra dose of 1.84 mSv (additional 59.1%). Targeted dual-energy imaging within one breath-hold is feasible for characterisation of urinary calculi using single-source MDCT allowing minimal anatomical discordance. (orig.)

  9. Comparison of the trauma degree after retroperitoneoscopy and percutaneous nephtoscopy treatment of complicated upper ureteral calculi

    Institute of Scientific and Technical Information of China (English)

    Shu-Run Zhao; Zhan-Peng Lu

    2016-01-01

    Objective:To compare the trauma degree after retroperitoneoscopy and percutaneous nephtoscopy treatment of complicated upper ureteral calculi.Methods:A total of 82 cases of patients with complicated upper ureteral calculi who received surgical treatment in our hospital from July 2013 to January 2015 were included for study. According to the different surgical methods, included subjects were randomly divided into observation group 41 cases and control group 41 cases. Control group received percutaneous nephtoscopy treatment, observation group received retroperitoneoscopy treatment, and then differences in early postoperative coagulation indicators, blood glucose and insulin levels, stress protein levels as well as PI3K/Akt and p38MAPK signaling pathway expression were compared between two groups.Results:Early postoperative PLCR, PDW, APTT and D-D values of observation group were lower than those of control group while Ca2+ value was higher than that of control group; early postoperative GLU, fasting lactate, fasting lactate/pyruvic acid and HOMA-IR values of observation group were lower than those of control group while HOMA-β value was higher than that of control group; early postoperative HSP70, DNA ligaseⅣ, JAB1 and ATF4 expression levels of observation group were higher than those of control group whileβ-tubulin and IFIT1 expression levels were lower than those of control group; early postoperative p38MAPK mRNA and protein expression levels of observation group were lower than those of control group while PI3K and Akt mRNA and protein expression levels were higher than those of control group.Conclusion: Retroperitoneoscopy treatment of patients with complicated upper ureteral calculi causes less injury to patients and less effect on internal environment, and helps to patients’ early postoperative rehabilitation.

  10. Outcomes of flexible ureteroscopic lithotripsy with holmium laser for upper urinary tract calculi

    Directory of Open Access Journals (Sweden)

    Marcello Cocuzza

    2008-03-01

    Full Text Available OBJECTIVE: To assess the perioperative and financial outcomes of flexible ureteroscopic lithotripsy with holmium laser for upper tract calculi in 44 patients. MATERIALS AND METHODS: Between February 2004 and September 2006, 44 patients treated for upper tract stone with flexible ureteroscopic lithotripsy were evaluated. Renal stones were associated with collecting system obstruction in 15 (34% patients, failed extracorporeal shock-wave lithotripsy (SWL occurred in 14 (32% patients, unilateral multiple stones in 18 (41% patients, and multiple bilateral stones in 3 (7%. In 29 (66% patients, the stone was located in the inferior calyx. Perioperative and financial outcomes were also evaluated. RESULTS: 50 procedures were performed in 44 patients. The mean stone burden on preoperative CT scan was 11.5 ± 5.8 mm. The mean operative time was 61.3 ± 29.4 min. The stone free rate was 93.1% after one procedure and 97.7% after a second procedure, with overall complication rate of 8%. Therapeutic success occurred in 92% and 93% of patients with lower pole stones and SWL failure, respectively. Treatment failure of a single session was associated with presence of a stone size larger than 15 mm (p = 0.007, but not associated with inferior calyx location (p = 0.09. Surgical disposables were responsible for 78% of overall costs. CONCLUSION: Flexible ureteroscopy using holmium laser is a safe and effective option for the treatment of upper urinary tract calculi. In addition, it can be considered an attractive option as salvage therapy after SWL failure or kidney calculi associated with ureteral stones. Stone size larger than 15 mm is associated with single session treatment failure.

  11. Case series demonstrating the clinical utility of dual energy computed tomography in patients requiring stents for urinary calculi.

    Science.gov (United States)

    Jepperson, Maria A; Thiel, David D; Cernigliaro, Joseph G; Broderick, Gregory A; Haley, William E

    2014-02-01

    Dual energy computed tomography (DECT) utilizes the material change in attenuation when imaged at two different energies to determine the composition of urinary calculi as uric acid or non-uric acid. We discuss a series of case reports illustrating DECT's ability to provide immediate determination of uric acid versus non-uric acid calculi and facilitate more informed clinical decision-making. Further, these cases demonstrate a unique population of patients with ureteral stents and percutaneous nephrostomy tubes that benefit from DECT's ability to create a virtual color contrast between an indwelling device and the stone material and thereby significantly impacting patient morbidity.

  12. [Infection-induced urinary calculi in children; current therapeutic schedule and prevention of recurrence].

    Science.gov (United States)

    Bach, D; Brühl, P; Hesse, A

    1988-01-01

    Infection stones have an outstanding position in childhood urolithiasis. In non-infection stones one can mostly find a certain--for example metabolic--causes of stone formation. In infection stones, the urease-producing and thus urea-cleaving properties of some gram-negative bacteria are responsible for alkalization of the urine and lead especially in combination with disturbances of urine transport to the staghorn calculi. Therefore in such children early diagnosis, adequate therapy and consequent maintenance is the crucial point for good life quality in future. Preliminary condition for therapeutic success is a close coworking between pediatric nephrologist, pediatric urologist, family doctor and parents. PMID:3070141

  13. Treatment of small lower pole calculi--SWL vs. URS vs. PNL?

    Science.gov (United States)

    Knoll, Thomas; Tasca, Andrea; Buchholz, Noor P

    2011-03-01

    According to current guideline recommendations extracorporeal shock wave lithotripsy (SWL) remains the first choice treatment for small and mid-sized renal calculi. However, the results of SWL treatment for lower pole stones can be disappointing whilst more invasive endoscopic modalities, such as flexible ureterorenoscopy (fURS) and percutaneous nephrolithotomy (PNL) are often considered more effective. This article summarizes a point-counterpoint discussion at the 9th eULIS symposium in Como, Italy, and discusses the potential advantages and disadvantages of the different therapeutic approaches.

  14. Use of a laparoscopic specimen retrieval pouch to facilitate removal of intact or fragmented cystic calculi from standing sedated horses: 8 cases (2012-2015).

    Science.gov (United States)

    Katzman, Scott A; Vaughan, Betsy; Nieto, Jorge E; Galuppo, Larry D

    2016-08-01

    OBJECTIVE To evaluate the use of a laparoscopic specimen retrieval pouch for removal of intact or fragmented cystic calculi from standing horses. DESIGN Retrospective case series. ANIMALS 8 horses (5 geldings and 3 mares) with cystic calculi. PROCEDURES Physical examination and cystoscopic, ultrasonographic, and hematologic evaluations of urinary tract function were performed for each horse. A diagnosis of cystic calculus was made on the basis of results of cystoscopy and ultrasonography. Concurrent urolithiasis or other urinary tract abnormalities identified during preoperative evaluation were recorded. Horses were sedated and placed in standing stocks, and the perineum was aseptically prepared. Direct access to the urinary bladder was gained in geldings via perineal urethrotomy or in mares by a transurethral approach. Calculi were visualized endoscopically, manipulated into the retrieval pouch, and removed intact or fragmented (for larger calculi). RESULTS For 4 geldings and 1 mare, fragmentation was necessary to facilitate calculus removal. Mean duration of surgery was 125 minutes, and trauma to the urinary bladder and urethra was limited to areas of hyperemia and submucosal petechiation. No postoperative complications were encountered for any horse. When lithotripsy was required, the retrieval pouch provided an effective means of stabilizing calculi and containing the fragments for removal. CONCLUSIONS AND CLINICAL RELEVANCE Use of the laparoscopic specimen retrieval pouch was an effective, minimally traumatic method for retrieving cystic calculi from standing horses. The pouch protected the urinary bladder and urethra from trauma during calculus removal and allowed for stabilization, containment, and fragmentation of calculi when necessary. PMID:27439348

  15. Ureteroscopy-assisted retrograde nephrostomy for lower calyx calculi in horseshoe kidney: two case reports

    Directory of Open Access Journals (Sweden)

    Kawahara Takashi

    2012-07-01

    Full Text Available Abstract Introduction We previously reported on the effectiveness of ureteroscopy-assisted retrograde nephrostomy during percutaneous nephrolithotomy and report two cases of lower calyx calculi in horseshoe kidney that were successfully treated with ureteroscopy-assisted retrograde nephrostomy. During the ureteroscopy-assisted retrograde nephrostomy procedure, a ureteroscope is advanced in the desired calyx and a Lawson retrograde nephrostomy puncture wire is inserted. The wire is advanced through the calyx to exit the skin. The wire is then used for the percutaneous dilation. Case presentation Case 1 was a 68-year-old man who was shown on radiography to have left lower calyx calculi (19 × 15mm, 7 × 5mm, and 7 × 3mm in horseshoe kidney. Case 2 was a 36-year-old woman shown on radiography to have a left lower calyx calculus (10 × 8mm in horseshoe kidney. Conclusions Both patients were stone-free after ureteroscopy-assisted retrograde nephrostomy during percutaneous nephrolithotomy. Ureteroscopy-assisted retrograde nephrostomy is a promising procedure for safely and effectively treating lower calyx stones in horseshoe kidney.

  16. Application of physico-chemical procedures in the analysis of urinary calculi

    Energy Technology Data Exchange (ETDEWEB)

    Rodgers, A.L.

    1985-01-01

    All physico-chemical techniques used in the analysis of urinary calculi have inherent advantages and limitations. Although x-ray powder diffraction can identify constituents unambiguously, certain minor components can be missed. Infrared spectroscopy is more sensitive but band assignment at low concentrations is difficult. Scanning electron microscopy together with energy dispersive x-ray analysis permits the simultaneous investigation of morphology and chemical microstructure. With the electron microprobe, minor constituents can be detected but tedious sample preparation procedures are required. Transmission electron microscopy is extremely useful in determining constituent inter-relationships and ultrastructure but ultramicrotomy is very difficult. Thermal gravimetric analysis gives quantitative information easily but does not satisfactorily distinguish between struvite and brushite. In an attempt to assess the accuracy of chemical analyses, 62 calculi were investigated applying several chemical tests. Those for MgS , PO4(T ), NHU and uric acid proved highly reliable while that for CaS often yielded an incorrect result. The test for oxalate was totally unsatisfactory. Investigators of stone composition and structure should include x-ray diffraction (or infrared spectroscopy) and scanning electron microscopy as their methods of first choice. In addition, chemical or thermogravimetric analyses should be utilized in an auxiliary capacity.

  17. The Dual Action of Varunadi Kwath in Renal Calculi as well as Uterine Fibroid- A Case Study

    Directory of Open Access Journals (Sweden)

    Padavi D. M.

    2015-09-01

    Full Text Available Mutrashmari (Renal Calculi is very common disorder. This distressing urinary disorder affects around 5-7 million people in India [11]. The chances of recurrence are always high and the surgery having disadvantage of high cost. The available treatment in modern science is only conservative and surgical in this present study an effort was made to evaluate the role of Varunadi Kwath in Mutrashmari. The main aim of this particular study was inclined towards the disintegration, dissolution, dislodgement and expulsion of renal calculi. The contents of Varunadi Kwath are easily available, economical and are easy to administer, which are having Anti-inflammatory, Diuretic and Antilithic properties. A case of renal calculi with uterine fibroid was diagnosed and the treatment was given for a period of 9 months. The size of the calculus was studied by periodic ultrasonography; the symptoms Mutrakruchrata (Dysuria, Shula (Pain in abdomen, Sadaha Mutrata (Burning micturition are significantly reduced within less than 45 days and total expulsion of calculi in less than 180 days.

  18. Content and Face Validation of a Curriculum for Ultrasonic Propulsion of Calculi in a Human Renal Model

    OpenAIRE

    Hsi, Ryan S.; Dunmire, Barbrina; Cunitz, Bryan W.; He, Xuemei; Sorensen, Mathew D.; Harper, Jonathan D.; Bailey, Michael R.; Lendvay, Thomas S.

    2014-01-01

    Purpose: Ultrasonic propulsion to reposition urinary tract calculi requires knowledge about ultrasound image capture, device manipulation, and interpretation. The purpose of this study was to validate a cognitive and technical skills curriculum to teach urologists ultrasonic propulsion to reposition kidney stones in tissue phantoms.

  19. Zdravljenje s tamsulozinom pri kamnih v spodnji tretjini sečevoda: Treatment with tamsulosin in patients with distal ureteral calculi:

    OpenAIRE

    Bizjak, Igor; Erklavec, Marko; Jagodič, Klemen; Korošec, Helena; Poteko, Sandi

    2008-01-01

    Background Symptomatic ureteral calculi are one of the most important issues in urologist emergency clinical settings. Spontaneous passage of distal ureteral calculi is usually achieved with good hydration and spasmoanalgetic drugs. á-blocker therapy may facilitate and accelerate the spontaneous passageof ureteral stones.Patients and In retrospective study we analyzed patients with renal colic admitted to our department in methods 2006. All of them had clinical examination, urine and blood an...

  20. PRE-AND POST-OPERATIVE CORTICAL FUNCTION OF THE KIDNEY WITH STAGHORN CALCULI ASSESSED BY 99mTc-DMSA RENAL SCINTIGRAPHY

    OpenAIRE

    川村, 寿一

    1982-01-01

    99mTc-DMSA renal scintigraphy consisting of the cortical image and DMSA renal uptake was used to assess the pre- and post-operative renal function in 39 patients with staghorn calculi or complicated calculi occupying more than 2 major calices. Extended pyelolithotomy was performed on 14 patients, nephrolithotomy on 14 patients, pyelolithotomy combined with nephrotomy on 7 patients, and partial nephrectomy on 4 patients. Nine out of 14 patients who underwent pyelolithotomy and 4 out of 14 pati...

  1. Helical CT evaluation of the chemical composition of urinary tract calculi with a discriminant analysis of CT-attenuation values and density

    Energy Technology Data Exchange (ETDEWEB)

    Bellin, Marie-France; Meric, Jean-Baptiste [AP-HP, Department of Radiology, Hopital Paul-Brousse, Villejuif Cedex (France); Renard-Penna, Raphaelle; Grenier, Philippe [AP-HP, Department of Radiology, Hopital Pitie-Salpetriere, Paris Cedex 13 (France); Conort, Pierre; Richard, Francois [AP-HP, Department of Urology, Hopital Pitie-Salpetriere, Paris Cedex 13 (France); Bissery, Anne; Mallet, Alain [AP-HP, Department of Biostatistics, Hopital Pitie-Salpetriere, Paris Cedex 13 (France); Daudon, Michel [AP-HP, Department of Biochemistry, Hopital Necker, Paris Cedex 15 (France)

    2004-11-01

    The aim of this study was to evaluate the efficacy of helical CT using a combination of CT-attenuation values and visual assessment of stone density as well as discriminant linear analysis to predict the chemical composition of urinary calculi. One hundred human urinary calculi were obtained from a stone-analysis laboratory and placed in 20 excised pig kidneys. They were scanned at 80, 120 and 140 kV with 3-mm collimation. Average, highest and lowest CT-attenuation values and CT variability were recorded. The internal calculus structure was assessed using a wide window setting, and visual assessment of stone density was recorded. A stepwise discriminant linear analysis was performed. The following three variables were discriminant: highest CT-attenuation value, visual density, and highest CT-attenuation value/area ratio, all at 80 kV. The probability of correctly classifying stone composition with these three variables was 0.64, ranging from 0.54 for mixed calculi to 0.69 for pure calculi. The probabilities of correctly classifying calculus composition were: 0.91 for calcium oxalate monohydrate and brushite, 0.89 for cystine, 0.85 for uric acid, 0.11 for calcium oxalate dihydrate, 0.10 for hydroxyapatite, and 0.07 for struvite calculi. When the first two ranks of highest probability for the accurate classification of each calculus type were taken into account, 81% of the calculi were correctly classified. Assessment at 80 kV of the highest CT-attenuation value, visual density and the highest CT-attenuation value/area ratio accurately predicts the chemical composition of 64-81% of urinary calculi. When the first two ranks of highest probability for the accurate classification of each calculus type were taken into account, all cystine, calcium oxalate monohydrate and brushite calculi were correctly classified. (orig.)

  2. Renal blood flow and metabolism after cold ischaemia: peroperative measurements in patients with calculi

    DEFF Research Database (Denmark)

    Petersen, H K; Henriksen, Jens Henrik Sahl

    1984-01-01

    Peroperative measurements of renal blood flow (RBF), renal O2-uptake, and renal venous lactate/pyruvate (L/P) ratio were performed before and after a period of 30-71 min of hypothermic (10-15 degrees C) renal ischaemia in nine patients, undergoing surgery for renal calculi. Before ischaemia, RBF.......01) immediately after re-established perfusion and 36% (P less than 0.02) 30 min later. In one additional patient, who had a short warm ischaemia (8 min), the flow pattern was the same. As arterial pressure remained constant, the reduced RBF signifies an increased renal vascular resistance. Renal O2-uptake...... and renal venous L/P ratio were almost constant, indicating no significant anaerobic processes being involved in the flow response. None of the patients showed any signs of reactive hyperaemia. It is concluded that hypothermic renal ischaemia may be followed by an increased renal vascular resistance even...

  3. Imaging protocol for suspected ureteric calculi in patients presenting to the emergency department

    International Nuclear Information System (INIS)

    Aim: To ensure diagnostic yields were adequate in patients with suspected ureteric calculi with and without haematuria, and to assess whether there was a significant difference between these two groups in men and women. Materials and methods: A retrospective analysis was undertaken of 513 patient records who attended the Emergency Department with suspected ureteric colic over 8 months. Results: 513 patient records were evaluated. The overall positive rate for calculi was 45.4%, with an alternative diagnosis in 14.4%. Of the patients scanned with haematuria 49.36% were positive. The positive scan rate in males was significantly higher than in females (56% v. 31%, p < 0.0001). 32.79% of patients scanned without haematuria had a proven calculus. The positive rate in males without haematuria was 40.39% versus 27.14% in females. Conclusion: The overall diagnostic yield of 45.4% is acceptable according to national guidelines. A large number of patients scanned without haematuria were found to have a calculus. This review suggests that in males a negative urine dipstick should not preclude CT investigation for renal colic in the presence of a “classical” history. However, the number of female patients with negative scans suggests that further randomized studies are needed to identify the ideal investigation pathway in women. - Highlights: • Review CTKUB diagnostic yields in patients presenting to the ED with loin pain. • We examine gender differences and whether haematuria is obligatory for CT investigation. • The positive scan rate in males was significantly higher than in females. • The positive rate in males without haematuria was 40.4%. • Diagnostic yields in females were low with or without haematuria

  4. Influence of ultrasonic adsorption lithotripsy by percutaneous nephroscope on inflammation mediators and stress hormones of patients with infectious renal calculi

    Institute of Scientific and Technical Information of China (English)

    Dong Lu; Xiao-Lei Jiang; Ming-Hui Wu; Yun-Jun Wu; Qiang Yuan

    2016-01-01

    Objective:To investigate the influence of ultrasonic adsorption lithotripsy by percutaneous nephroscope on inflammation mediators and stress hormones of the patients with infectious renal calculi. Methods:A total of 62 patients with infectious renal calculi in our hospital from January 2014 to June 2015 were selected as the study object,and they were randomly divided into control group(pneumatic ballistic lithotripsy by percutaneous nephroscope group) 31 cases and observation group(ultrasonic adsorption lithotripsy by percutaneous nephroscope group) 31 cases,then the serum expression levels of inflammation mediators and stress hormones of two groups before the treatment and at 12 h-24 h and 48 h after the treatment were compared. Results:The serum expression levels of inflammation mediators and stress hormones of two groups before the treatment were compared,all P>0.05,and the serum expression levels of observation group at 12 h-24 h and 48 h after the treatment were significantly lower than those of control group,while the expression levels of two groups after the treatment were all significantly higher than those before the treatment,all P<0.05. Conclusions:The inflammation mediators and stress hormones of patients with infectious renal calculi who are treated with pneumatic ballistic lithotripsy by percutaneous nephroscope are relatively lower,and it shows that the trauma and bad stress for the body are better controlled, so its clinical application value are relatively higher.

  5. Symptomatic small non-obstructing lower ureteric calculi: comparison of ureteroscopy and extra corporeal shock wave lithotripsy.

    Directory of Open Access Journals (Sweden)

    Andankar M

    2001-07-01

    Full Text Available OBJECTIVE: To compare the success, efficacy and complications of ureteroscopy (URS and extra corporeal shock wave lithotripsy (ESWL for the treatment of symptomatic small non obstructing lower ureteric calculi. SUBJECTS AND METHODS: This prospective non-randomised study was conducted simultaneously at two urological referral centres, included 280 patients with symptomatic small (4-10 mm lower ureteric calculi (situated below the sacroiliac joint, with good renal function on intravenous urography. Patients were offered both the treatment options. One hundred and sixty patients chose ureteroscopy, whereas 120 patients were treated by ESWL. Standard techniques of ureteroscopy and ESWL were employed. Patients were followed-up to assess the success rates and complications of the two procedures. RESULTS: Ureteroscopy achieved complete stone clearance in one session in 95% of patients. In six patients ureteroscopy had failed initially and was later accomplished in second session improving the success rate to 98.7%. Two patients had a proximal migration of calculus that needed ESWL. Of the 120 patients treated by ESWL, 90% achieved stone free status at three months. Ureteroscopy was needed for twelve patients (10% where ESWL failed to achieve stone clearance. There were no significant ESWL related complications. ESWL was administered on outpatient basis, while patients needed hospitalisation and anaesthesia for ureteroscopy. CONCLUSION: ESWL can be the primary mode of treatment for symptomatic small non-obstructing lower ureteric calculi as it is minimally invasive and safe. Ureteroscopy can be offered to patients who demand immediate relief or when ESWL fails.

  6. Identification of mineral compositions in some renal calculi by FT Raman and IR spectral analysis

    Science.gov (United States)

    Tonannavar, J.; Deshpande, Gouri; Yenagi, Jayashree; Patil, Siddanagouda B.; Patil, Nikhil A.; Mulimani, B. G.

    2016-02-01

    We present in this paper accurate and reliable Raman and IR spectral identification of mineral constituents in nine samples of renal calculi (kidney stones) removed from patients suffering from nephrolithiasis. The identified mineral components include Calcium Oxalate Monohydrate (COM, whewellite), Calcium Oxalate Dihydrate (COD, weddellite), Magnesium Ammonium Phosphate Hexahydrate (MAPH, struvite), Calcium Hydrogen Phosphate Dihydrate (CHPD, brushite), Pentacalcium Hydroxy Triphosphate (PCHT, hydroxyapatite) and Uric Acid (UA). The identification is based on a satisfactory assignment of all the observed IR and Raman bands (3500-400 cm- 1) to chemical functional groups of mineral components in the samples, aided by spectral analysis of pure materials of COM, MAPH, CHPD and UA. It is found that the eight samples are composed of COM as the common component, the other mineral species as common components are: MAPH in five samples, PCHT in three samples, COD in three samples, UA in three samples and CHPD in two samples. One sample is wholly composed of UA as a single component; this inference is supported by the good agreement between ab initio density functional theoretical spectra and experimental spectral measurements of both sample and pure material. A combined application of Raman and IR techniques has shown that, where the IR is ambiguous, the Raman analysis can differentiate COD from COM and PCHT from MAPH.

  7. Scintigraphy and Doppler ultrasonography for the evaluation of obstructive urinary calculi

    Directory of Open Access Journals (Sweden)

    L. Gandolpho

    2001-06-01

    Full Text Available Forty-seven patients with unilateral obstructive calculi (12 males and 35 females were submitted to 99mTc-diethylene triamine pentaacetic acid (DTPA or 99mTc-dimercaptosuccinic acid (DMSA scans for assessment of renal function. The scans revealed unilateral functional deficit in 68 and 66% of the patients, respectively. A calculus size of 1.1 to 2.0 cm was significantly associated with deficit detected by DTPA, but duration of obstruction and calculus localization were not. After relief of the obstruction, the mean percent renal function of the affected kidney was found to be significantly increased from 25 ± 12% to 29 ± 12% in DTPA and from 21 ± 15% to 24 ± 12% in DMSA. Initial Doppler ultrasonography performed in 35 patients detected an increased resistive index in 10 (29%. In the remaining patients with a normal resistive index, ureteral urinary jet was observed, indicating partial obstruction. The high frequency of renal function impairment detected by DTPA and of tubulointerstitial damage detected by DMSA as well as the slight amelioration of unilateral renal function after relief of obstruction suggest that scintigraphy assessment may help evaluate the unilateral percentage of renal function and monitor renal function recovery when it occurs. The presence of a urinary jet detected by Doppler ultrasonography further indicates the severity of obstruction and the recovery prognosis.

  8. Diagnosis and surgical management of obstructive ureteral calculi in cats: 11 cases (1993-1996)

    International Nuclear Information System (INIS)

    To evaluate diagnostic methods, surgical treatment, perioperative management, and renal function of cats with obstructive calcium oxalate ureteroliths. Retrospective case series. 11 cats that underwent surgery for removal of calcium oxalate ureteroliths. Medical records were reviewed, and the following information was recorded: signalment; results of physical examination, clinicopathologic analyses, and abdominal imaging; surgical procedure; postoperative management; and results of ureterolith quantitative analysis. Ureteroliths in the proximal portion of the ureter were removed from 5 cats (pyelotomy, 1 cat; unilateral ureterotomy, 2 cats; bilateral ureterotomies, 2 cats). Calculi in the middle and distal part of the ureter were removed by partial ureterectomy and ureteroneocystostomy (6 cats). Ten cats recovered from surgery and were discharged from the hospital. One cat died from unknown causes 4 months after surgery, and 1 cat had a nephrectomy elsewhere 5 weeks after ureterolith removal. Eight cats were evaluated 12 to 20 months after surgery. Of these, 2 cats that were markedly azotemic before surgery improved after surgery, and 2 cats developed nephroliths after surgery. Also, of 5 cats that had nephroliths that were not removed at the time of surgery, 4 still had visible nephroliths. One cat had recurrent ureteral obstruction from a ureterolith and persistent urinary tract infection. Ureteroliths or ultrasonographic evidence of ureteral obstruction were not detected in other cats. A combination of microsurgical techniques and intensive postoperative care is necessary to minimize morbidity of cats after removal of a ureterolith. Renal function may improve or stabilize after removal of the ureteral obstruction

  9. Management of symptomatic ureteral calculi during pregnancy: Experience of 23 cases

    Directory of Open Access Journals (Sweden)

    Mohammad S Abdel-Kader

    2013-01-01

    Full Text Available Purpose: To present our experience in the management of symptomatic ureteral calculi during pregnancy. Materials and Methods: Twenty-three pregnant women, aged between 19 and 28 years presented to the obstetric and urology departments with renal colic (17 cases, 73.9% and fever and renal pain (6 cases, 26.1%; suggesting ureteric stones. The diagnosis was established by ultrasonography (abdominal and transvaginal. Outpatient follow-up consisted of clinical assessment and abdominal ultrasonography. Follow-up by X-ray of the kidneys, ureter, and bladder (KUB, or intravenous urography (IVU was done in the postpartum period. Results: Double J (DJ stent was inserted in six women (26% with persistent fever followed by extracorporeal shock wave lithotripsy (ESWL one month post-partum. Ureteroscopic procedure and pneumatic lithotripsy were performed for 17 women (distal ureteric stone in 10, middle ureter in 5, and upper ureteric stone in 2. Stone-free rate was 100%. No urologic, anesthetic, or obstetric complications were encountered. Conclusions: Ureteroscopy, pneumatic lithotripsy, and DJ insertion could be a definitive and safe option for the treatment of obstructive ureteric stones during pregnancy.

  10. Scintigraphy and Doppler ultrasonography for the evaluation of obstructive urinary calculi.

    Science.gov (United States)

    Gandolpho, L; Sevillano, M; Barbieri, A; Ajzen, S; Schor, N; Ortiz, V; Heilberg, I P

    2001-06-01

    Forty-seven patients with unilateral obstructive calculi (12 males and 35 females) were submitted to 99mTc-diethylene triamine pentaacetic acid (DTPA) or 99mTc-dimercaptosuccinic acid (DMSA) scans for assessment of renal function. The scans revealed unilateral functional deficit in 68 and 66% of the patients, respectively. A calculus size of 1.1 to 2.0 cm was significantly associated with deficit detected by DTPA, but duration of obstruction and calculus localization were not. After relief of the obstruction, the mean percent renal function of the affected kidney was found to be significantly increased from 25 +/- 12% to 29 +/- 12% in DTPA and from 21 +/- 15% to 24 +/- 12% in DMSA. Initial Doppler ultrasonography performed in 35 patients detected an increased resistive index in 10 (29%). In the remaining patients with a normal resistive index, ureteral urinary jet was observed, indicating partial obstruction. The high frequency of renal function impairment detected by DTPA and of tubulointerstitial damage detected by DMSA as well as the slight amelioration of unilateral renal function after relief of obstruction suggest that scintigraphy assessment may help evaluate the unilateral percentage of renal function and monitor renal function recovery when it occurs. The presence of a urinary jet detected by Doppler ultrasonography further indicates the severity of obstruction and the recovery prognosis. PMID:11378662

  11. Combined micro-and standard percutaneous nephrolithotomy for complex renal calculi

    Science.gov (United States)

    Buldu, İbrahim; Tepeler, Abdulkadir; Karatağ, Tuna; İnan, Ramazan; Armağan, Abdullah; İstanbulluoğlu, Okan

    2016-01-01

    Objective We aimed to present the technique of combination of standard percutaneous nephrolithotomy (PNL) with microperc for achieving higher success rates without increasing complication rates in the management of complex renal calculi. Material and methods The patients who underwent microperc procedure as a complementary procedure to standard PNL for complex kidney stones in two reference hospitals between 2013 and 2015, were evaluated retrospectively. Results All patients underwent a total of two accesses one for standard PNL and one for microperc. The mean stone size was measured as 54.3 mm. The procedures were completed after an average operative time of 88.2 minutes and fluoroscopy time of 5.3 minutes. Stone free status was achieved in 18 cases (78.2%) and small residual fragments (≤4 mm) were detected in 3 cases (13.1%). Complications were seen in three patients (13%) as hemorrhage in one and postoperative fever in two patients. Conclusion Despite the limitations of this study, the combination of standard PNL and microperc might reduce the complication rates and increase the success rates when treating complex kidney stones. Future prospective and comparative studies are needed. PMID:27635289

  12. First case report of staghorn calculi successfully removed by mini-endoscopic combined intrarenal surgery in a 2-year-old boy.

    Science.gov (United States)

    Taguchi, Kazumi; Hamamoto, Shuzo; Okada, Atsushi; Mizuno, Kentaro; Tozawa, Keiichi; Hayashi, Yutaro; Kohri, Kenjiro; Yasui, Takahiro

    2015-10-01

    Less-invasive therapy for pediatric urolithiasis is available due to the miniaturization of equipment and improved optics; however, surgical treatment strategies, especially for large calculi, remain controversial. We describe here our experience of treating a 2-year-old boy with left renal staghorn calculi with a single session of mini-endoscopic combined intrarenal surgery in the prone split-leg position with pre-ureteral stenting and the directional enhanced flow imaging ultrasound technique. This is the first report of successful pediatric mini-endoscopic combined intrarenal surgery without any major complications. We believe this technique provides an important therapeutic option for large renal calculus in pediatric patients.

  13. Protective effect of Urtica dioica methanol extract against experimentally induced urinary calculi in rats.

    Science.gov (United States)

    Zhang, Haiying; Li, Ning; Li, Kun; Li, Peng

    2014-12-01

    Renal calculi formation is one of the most common urological disorders. Urinary stone disease is a common disease, which affects 10‑12% of the population in industrialized countries. In males, the highest prevalence of the disease occurs between the age of 20 and 40 years, while in females, the highest incidence of the disease occurs later. Previous studies have shown that long‑term exposure to oxalate is toxic to renal epithelial cells and results in oxidative stress. In the present study, a methanolic extract of aerial parts of Urtica dioica was screened for antiurolithiatic activity against ethylene glycol and ammonium chloride‑induced calcium oxalate renal stones in male rats. In the control rats, ethylene glycol and ammonium chloride administration was observed to cause an increase in urinary calcium, oxalate and creatinine levels, as well as an increase in renal calcium and oxalate deposition. Histopathological observations revealed calcium oxalate microcrystal deposits in the kidney sections of the rats treated with ethylene glycol and ammonium chloride, indicating the induction of lithiasis. In the test rats, treatment with the methanolic extract of Urtica dioica was found to decrease the elevated levels of urinary calcium, oxalate and creatinine, and significantly decrease the renal deposition of calcium and oxalate. Furthermore, renal histological observations revealed a significant reduction in calcium oxalate crystal deposition in the test rats. Phytochemical analysis of the Urtica dioica extract was also performed using liquid chromatography‑electrospray ionization tandem mass spectrometry and high-performance liquid chromatography with photodiode array detection, to determine the chemical composition of the extract. The eight chemical constituents identified in the extract were protocatechuic acid, salicylic acid, luteolin, gossypetin, rutin, kaempferol‑3‑O‑rutinoside, kaempferol‑3‑O‑glucoside and chlorogenic acid. In conclusion

  14. Protective effect of Urtica dioica methanol extract against experimentally induced urinary calculi in rats.

    Science.gov (United States)

    Zhang, Haiying; Li, Ning; Li, Kun; Li, Peng

    2014-12-01

    Renal calculi formation is one of the most common urological disorders. Urinary stone disease is a common disease, which affects 10‑12% of the population in industrialized countries. In males, the highest prevalence of the disease occurs between the age of 20 and 40 years, while in females, the highest incidence of the disease occurs later. Previous studies have shown that long‑term exposure to oxalate is toxic to renal epithelial cells and results in oxidative stress. In the present study, a methanolic extract of aerial parts of Urtica dioica was screened for antiurolithiatic activity against ethylene glycol and ammonium chloride‑induced calcium oxalate renal stones in male rats. In the control rats, ethylene glycol and ammonium chloride administration was observed to cause an increase in urinary calcium, oxalate and creatinine levels, as well as an increase in renal calcium and oxalate deposition. Histopathological observations revealed calcium oxalate microcrystal deposits in the kidney sections of the rats treated with ethylene glycol and ammonium chloride, indicating the induction of lithiasis. In the test rats, treatment with the methanolic extract of Urtica dioica was found to decrease the elevated levels of urinary calcium, oxalate and creatinine, and significantly decrease the renal deposition of calcium and oxalate. Furthermore, renal histological observations revealed a significant reduction in calcium oxalate crystal deposition in the test rats. Phytochemical analysis of the Urtica dioica extract was also performed using liquid chromatography‑electrospray ionization tandem mass spectrometry and high-performance liquid chromatography with photodiode array detection, to determine the chemical composition of the extract. The eight chemical constituents identified in the extract were protocatechuic acid, salicylic acid, luteolin, gossypetin, rutin, kaempferol‑3‑O‑rutinoside, kaempferol‑3‑O‑glucoside and chlorogenic acid. In conclusion

  15. Evaluation of the efficacy of tamsulosin with or without deflazacort for stone clearance after extracorporeal shockwave lithotripsy for upper ureteral and renal calculi

    Directory of Open Access Journals (Sweden)

    Rajeev T. P.

    2016-02-01

    Conclusions: Addition of alpha-blocker tamsulosin along with deflazacort post ESWL for renal and upper ureteric calculi increases the stone expulsion rate and reduces the expulsion duration as shown by highly statistically significant results in group C. [Int J Res Med Sci 2016; 4(2.000: 643-648

  16. Combined minimally invasive percutaneous nephrolithotomy and retrograde intrarenal surgery for staghorn calculi in patients with solitary kidney.

    Directory of Open Access Journals (Sweden)

    Dehui Lai

    Full Text Available BACKGROUND: To present our experience with simultaneous combined minimally invasive percutaneous nephrolithotomy (MPCNL and retrograde intrarenal surgery (RIRS to manage patients with staghorn calculi in solitary kidney, and evaluate the safety, efficiency and feasibility of this approach. METHODOLOGY/PRINCIPAL FINDINGS: The study included 20 patients with staghorn calculi in solitary kidney. Demographic characteristics, stone location and surface area were recorded. After informed consent, the patients underwent one stage MPCNL firstly. Combined second stage MPCNL and RIRS simultaneously were performed at postoperative 5-7 days. Operative parameters, stone-free rate (SFR, stone analyses and complications were evaluated. Serum creatinine (Scr, glomerular filtration rate (GFR and chronic kidney disease (CKD were measured preoperatively, postoperatively at 1 month, and each follow-up visit. All patients had staghorn stones involving multiple calyces. The mean stone burden was 1099.9 ± 843.95 mm(2. All patients had only one percutaneous access tract. The mean whole operative duration was 154.37 ± 32.45 min. The mean blood loss was 64 (12-140 ml. The final SFR was 90%. During the 1-month follow-up study period, four patients improved in CKD stage. Two patients who had CKD (stage 5 still needed dialysis postoperatively. Mean Scr of the rest patients preoperatively was 187.16 ± 94.12 compared to 140.99 ± 57.92 umol/L by the end of 1-month follow-up period (p = 0.019. The same findings were observed in GFR in that preoperatively it was 43.80 ± 24.74 ml/min and by the end of the 1-month follow-up it was 49.55 ± 21.18 ml/min (p = 0.05. CONCLUSIONS/SIGNIFICANCE: Combined MPCNL and RIRS management effectively decrease the number and size of percutaneous access tracts, which is safe, feasible, and efficient for managing staghorn calculi in solitary kidney with satisfactory SFR and reducing blood loss, potential morbidity associated with multiple

  17. Minimally invasive percutaneous nephrolithotomy guided by ultrasonography to treat upper urinary tract calculi complicated with severe spinal deformity

    Science.gov (United States)

    He, Zhaohui; Zhang, Caixia; Zeng, Guohua

    2016-01-01

    ABSTRACT Objective: To report our experience of minimally invasive percutaneous nephrolithotomy(MPCNL) in managing upper urinary tract calculi complicated with severe spinal deformity. Materials and Methods: Between August 2001 to December 2012, 16 upper urinary calculi in 13 patients with severe spinal deformity were treated by MPCNL. Preoperative investigation of the respiratory function, evaluation of anatomy by intravenous urography (IVU) and CT scan, and preoperative kidney ultrasonagraphy with simulation of the percutaneous puncture were performed in all patients. The percutaneous puncture was guided by ultrasonography. Results: A total of 19 MPCNL procedures were performed in 16 kidneys, with an average 1.2 procedures in each kidney. Three kidneys needed two sessions of MPCNL, and 2 kidneys needed combined treatment with retrograde flexible ureterscopic lithotripsy. All procedures were successfully completed with no major complications during or after surgery. The mean (range) operative duration was 67 (20-150) min and the mean postoperative haemoglobin drop was 1.0 (0.2-3.1) g/dL. Complete stone-free status was achieved in 14 kidneys. At a mean follow-up of 48(3-86) months, recurrence of small lower calyx stone was detected in one patient. Recurrent UTI was documented by urine culture in two patients and managed with sensitive antibiotics. Conclusion: PCNL for patients with severe spinal deformities is challenging. Ultrasonography-assisted puncture can allow safe and successfully establishment of PCN tract through a narrow safety margin of puncture and avoid the injury to the adjacent organs. However, the operation should be performed in tertiary centers with significant expertise in managing complex urolithiasis. PMID:27509373

  18. Influence of ureter mirror holmium laser lithotripsy on blood rheology and oxidative stress in patients with upper ureteral calculi

    Institute of Scientific and Technical Information of China (English)

    Guo-Dong Chen; Jian Dong; Jun Ding; Guo-Bo Li; Chen-Xi Zhou

    2016-01-01

    Objective:To explore the influence of ureter mirror holmium laser lithotripsy on blood rheology and oxidative stress in patients with upper ureteral calculi.Methods:A total of 113 cases patients who underwent surgical treatment of ureter mirror holmium laser lithotripsy were divided into observation group (n=76) and the control group (n=37) according to different therapeutic methods. Patients in the observation group were treated by ureteroscopy holmium laser lithotripsy treatment and patients in control group were treated by open surgery treatment. Venous blood was collected ro test the blood rheology and oxidative stress indicators respectively in the preoperative and postoperative 1 d, 7 d after treatment.Results:The postoperative backlog of red blood cells increased performance first decreased after treatment in two groups, the plasma viscosity and whole blood viscosity, high shear viscosity of whole blood were increased after the stable trend, the postoperative hematocritg, plasma viscosity, whole blood viscosity, high shear viscosity of whole blood were significantly lower than the control group in the observation group 1 d and 7 d after operation; The postoperative Cor, MDA in two groups showed a rising trend, SOD showed a decreasing trend, the difference was statistically significant; MDA in observation group 1 d and 7 d after operation was significantly lower than the control group, SOD was significantly higher than control group in the same point in time.Conclusions:Patients with upper ureteral calculi treated by surgical treatment may cause abnormal blood rheology and oxidative stress. And compared with open surgery, ureteroscopy holmium laser lithotripsy is of smaller side effect, and is beneficial for postoperative recovery.

  19. Diagnosis of uric acid calculi by dual energy CT: with ex vivo calculi spectroscopy as the reference standard%双能CT对离体泌尿系尿酸结石的诊断价值

    Institute of Scientific and Technical Information of China (English)

    范兵; 邱建星; 王霄英; 郭小超; 董健; 张蓓; 龚侃; 黄海超

    2012-01-01

    Objective:To prospectively determine the capability of dual energy CT Gemstone spectral imaging and advanced post-processing techniques to identify uric acid calculi, with ex vivo urinary calculi spectroscopy as the reference standard. Methods: Sixty-three urinary stones were obtained by endoscopic lithotripsy. The chemical composition of the stones was confirmed by spectroscopy (including 9 cases of uric acid calculus,54 cases of non-uric acid stones). These urinary calculi were placed in the fresh porcine kidney pelvis dipped in physiological saline. Both routine CT scan and dual energy CT scan were performed. All the images of 63 urinary calculi were analyzed at workstation. CT value of the calculi was measured on the images of routine scan,40keV monoenergic (MONO) images,and 140keV MONO images,respectively. Effective Z (Eff-Z) was measured for each calculus. The spectral HU curve and histogram of 63 urinary calculi were created. Kruskal-Wallis U test and ROC curve analysis were used to evaluate the capability of these parameters to differentiate the urinary calculi components. Results:CT values of uric acid stones were as follows:(403±112)HU on routine scan images, (341±127)HU on 40keV MONO images,(404± 119) HU on 140keV MONO images. CT values of non-uric acid stones were as follows: (854 ± 335) HU on routine scan images, (1689±853) HU on 40keV MONO images, (445 ± 130) HU on 140keV MONO images. The CT values of uric acid stone and non-uric acid stone were different on both routine scan (P< 0. 01) and 40keV MONO images (P<0. 01). But the CT values of uric acid stone and non-uric acid stone were not significantly different (P=0. 436) on 140keV MONO images. Eff-Z of uric acid stones and non-uric acid stones were significantly different (P<0. 01). Seven in 9 (77. 8%) uric acid stones demonstrated rising spectral energy curve,whereas the other 56 non-uric acid stones all demonstrated reversed spectral energy curve. Conclusion: Dual energy CT is a promising

  20. Procalcitonin determined at emergency department as an early indicator of progression to septic shock in patient with sepsis associated with ureteral calculi

    OpenAIRE

    Young Hwii Ko; Yoon Seob Ji; Sin-Youl Park; Su Jin Kim; Phil Hyun Song

    2016-01-01

    ABSTRACT Introduction: To investigate the role of initial procalcitonin (PCT) level as an early predictor of septic shock for the patient with sepsis induced by acute pyelonephritis (APN) secondary to ureteral calculi. Materials and Methods: The data from 49 consecutive patients who met criteria of sepsis due to APN following ureteral stone were collected and divided into two groups: with (n=15) or without (n=34) septic shock. The clinical variables including PCT level for this outcome were...

  1. The management of the congenital anterior urethral diverticula with calculi which is the cause of acute urinary retention (Globe vesicale): A case report

    OpenAIRE

    Pirinççi, Necip; Geçit, İlhan; Güneş, Mustafa; Taken, Kerem; Tanık, Serhat; Ceylan, Kadir

    2013-01-01

      Abstract. Congenital urethral diverticula with calculi has a low incidence as reported in the literature. Congenital diverticula have been seen % 10-20 in all urethral diverticula. The etiology of urethral stones are urethra and bladder stones, urethral diverticula, foreign matters, urethral stenosis and urethral trauma. Management of treatment urethral stones is surgery and endoscopy. Our case was a three years old boy who referred to our clinic due to globe vesicale. Diagnosis was perform...

  2. Comparative study of minimally invasive endoscopic surgery and extracorporeal shock wave lithotripsy (ESWL for proximal ureteral calculi in pilots

    Directory of Open Access Journals (Sweden)

    He-qing GUO

    2014-01-01

    Full Text Available Objective To observe and compare the therapeutic effect of extracorporeal shock wave lithotripsy (ESWL and minimally invasive endoscopic surgery (URL/PCNL for proximal urinary calculi in pilots. Methods A retrospective analysis was conducted for the clinical data of 115 pilots who had received ESWL, URL and PCNL for the treatment of proximal urinary tract calculi from Sep, 2005 to Sep, 2012. The patients were divided into two groups according to the way of treatment: ESWL group (n=83 and URL/PCNL group (n=32. In ESWL group, the patients received ESWL for a maximum of 3 times. In URL/PCNL group, the patients received URS or PCNL after ESWL for 3 times without lithecbole. Results All the patients were male and the mean age was 36.1±9.1 years. The average diameter of the stones was 0.68±0.22cm in ESWL group and 0.78±0.25cm in URL/PCNL group. There was no significant difference in stone diameter between the two groups (P=0.526. The rate of qualification for flying was 68.7% in ESWL group and 81.3% in URL/PCNL group (URL 80.0%, PCNL 100%, showing a significant difference (P=0.002. In ESWL group, the rate of qualification for flying of pilots harboring renal and proximal ureteral stone, middle ureteral stone and distal ureteral stone was 64.3%, 88.9% and 33.3% respectively, with a significant difference (P=0.023. The rate of flying qualification of pilots harboring proximal ureteral stone, middle ureteral stone and distal ureteral stone was 71.4%, 86.7% and 87.5% respectively after URL, and there was no significant difference (P=0.174. Among the five patients who received URL but did not achieve satisfactory effect, two had stones retreated to the renal pelvis during the operation, and in two patients distal ureter was too narrow to allow passage of ureteroscope, and the ureteroscope was enveloped by inflammatory polyp in one patient. Conclusion URL/PCNL maybe more effective than ESWL in the treatment of proximal urinary calculus in pilots

  3. Significance of acoustic shadowing and comet tail artifacts in diagnosis of urinary calculi%超声伪像声影彗尾征在尿结石诊断中的意义

    Institute of Scientific and Technical Information of China (English)

    陈光勇; 林雨冬; 黄维; 范武林

    2012-01-01

    Objective To evaluate the significance of acoustic shadowing and comet tail artifacts in detection of urinary calculi. Methods 238 cases of urinary calculi were researched,including the mineral composition and the size( height and width) of calculi,the occurrence of acoustic shadowing and comet tail artifacts,then analyzed those relevant relationships by Statistical Analysis System. Results (1) There was no statistical relationship between the acoustic shadowing artifacts and urinary calculi mineral composition}P0. 05); (3(There was no statistical relationship between the occurrence of comet tail artifacts and urinary calculi width or height(P>0. 05). Conclusion (l)The occurrence of acoustic shadowing and comet tail artifacts is no relationship with urinary calculi mineral composition,and can not be used to predict urinary calculi mineral composition; (2)There is a directly relationship between the occurrence of acoustic shadowing artifacts and urinary calculi height, but there is no relationship between the occurrence of comet tail artifacts and urinary calculi width or height.%目的 研究超声伪像中的声影、彗尾征在尿结石超声影像检查中的意义.方法 对238例尿石症患者的尿结石成分、大小及超声检查时声影、彗尾征出现情况进行统计学评估,分析其相关性.结果 (1)声影的出现与尿结石成分无关(P>0.05);(2)声影与结石最大厚度有关(P<0.05),而声影与结石最大宽度无关(P>0.05);(3)彗尾征与结石的最大宽度及最大厚度均无关(P>0.05).结论 (1)声影的出现与尿结石的成分无关,不能用于判定结石成分;(2)声影的出现与尿结石的厚度有直接的关系,但彗尾征的出现与尿结石的厚度和宽度无关.

  4. Clinical analysis of retroperitoneal laparoscopy on the one-stage therapy of renal pelvic calculi or upper ureter calculi combined with renal cyst%后腹腔镜下一期治疗肾盂、输尿管上段结石合并肾囊肿临床分析

    Institute of Scientific and Technical Information of China (English)

    李海波; 李超志; 梁宇; 孟杰

    2013-01-01

    Objective To discuss procedures and effect of retroperitoneal laparoscopy on the one-stage therapy of renal pelvic calculi or upper ureter calculi combined with renal cyst. Methods From June 2009 to June 2012,10 patients treated with retroperitoneoscopic py-elolithotomy( RPPL )or ureterolithetomy( RPUL )and retroperitoneal laparoscopie renal cyst were retrospectively analyzed: Among the 10 cases,3 patients suffered from renal pelvic calculi combined with renal cyst,7 patients suffered from upper ureter calculi combined with renal cyst. Results All the operations were successful. The mean operation time was 80 minutes( 55 ~ 160 minutes ),the average blood loss was 10 mL(5 ~50 mL ),and the mean hospital stay was 7 days( 4 ~ 13 days )after the operation. Post-operation KUB and ultrasonog-raphy showed that all the stones and renal cyst were removed. Conclusion Retroperitoneal laparoscopic on the one-stage therapy of renal pelvic calculi or upper ureter calculi combined with renal cyst is effective and less invasive with fewer complications. It is worthy of application in the clinical work.%目的 探讨后腹腔镜一期治疗肾盂、输尿管上段结石合并肾囊肿手术方法 和疗效.方法 回顾2009年6月-2012年6月10例后腹腔镜一期行肾盂、输尿管上段切开取石和肾囊肿去顶术临床资料.10例中肾盂结石合并肾囊肿3例,输尿管上段结石合并肾囊肿7例.结果 10例手术均取得成功.手术时间55~160 min,平均80 min,出血量5~50 mL,平均10 mL.术后平均住院时间7(4~13)d.术后复查KUB及B超无囊肿及结石残留.结论 后腹腔镜下治疗肾盂、输尿管输尿管上段结石合并肾囊肿,效果确切,创伤小,并发症少,值得临床推广应用.

  5. 肾结石合并错构瘤的处理(附11例报告)%Treatment of Renal Calculi Associated with Renal Angiomyolipom

    Institute of Scientific and Technical Information of China (English)

    许良余; 陈善群; 王栋; 邹义华; 龚烨; 张威

    2013-01-01

    目的探讨肾结石合并错构瘤的治疗方法。方法通过对2006年10月~2013年1月11例肾结石同时合并错构瘤患者的治疗进行分析。结果11例患者中,3例随诊观察,无变化,2例行错构瘤剜除、肾实质切开取石,2例B超定位下行微创经皮肾碎石取石,4例输尿管软镜钬激光碎石术,1例行高选择性错构瘤动脉栓塞。结论肾结石合并错构瘤的治疗,依据结石大小、肾积水程度、肿瘤大小及技术设备条件综合考虑,选择安全、有效方法。%Objective To discuss treatment methods of renal calculi associated with renal angiomyolipoma. Methods According to the 2006 October to 2013 January in our hospital 11 cases of renal calculi associated with renal angiomyolipoma were analyzed. Results Of 11 cases,3 cases were fol ow-up observation and no change,2 cases received angiomyolipoma enucleation and anatrophic nephrolithotomy,2 cases were given MPCNL using B-ultrasound localization. 4 cases were given flexible ureteroscoppe holmium laser lithotripsy. Conclusion Accord to dif erent situations it took safe and ef ective methods in treatment of renal calculi associated with renal angiomyolipoma.

  6. Therapeutic effect evaluation of TUPKEP combined with percutaneous cystotomy and nephroscopic EMS minimally invasive therapy for benign prostatic hyperplasia with multiple large bladder calculi

    Institute of Scientific and Technical Information of China (English)

    Zhi-Hu Zhu; Bing-Xun He; Hou-Bin Kang

    2016-01-01

    Objective:To study the therapeutic effect of TUPKEP combined with nephroscopic EMS pneumatic minimally invasive therapy for benign prostatic hyperplasia with multiple large bladder calculi.Methods: Benign prostatic hyperplasia patients with multiple (large) bladder calculi who received surgical treatment in our hospital from May 2012 to October 2015 were selected as the research subjects and randomly divided into TUPKEP group and TURP group, and then perioperative situation, serum PSA levels, liver and kidney function and the degree of inflammation were compared between two groups.Results: During operation, the amount of bleeding and the weight of removed prostate of TUPKEP group were significantly lower than those of TURP group; during postoperative recovery, the time of retention catheterization of TUPKEP group was shorter than that of TURP group; 1 d, 3 d and 7 d after operation, serum PSA levels of both groups were significantly higher than those before operation and serum PSA levels of TUPKEP group were significantly lower than those of TURP group; 3 days after operation, ALT, AST, BUN and Scr levels of TUPKEP group and TURP group were not different, and IL-1β and IL-18 levels in serum as well as mRNA levels of NLPR3, ACS, Caspase-1, IL-1β and IL-18 in peripheral blood mononuclear cells of TUPKEP group were significantly lower than those of TURP group.Conclusion: TUPKEP combined with nephroscopic EMS pneumatic minimally invasive therapy for benign prostatic hyperplasia with multiple large bladder calculi causes less damage, has better resection effect on the hyperplastic gland tissue than TURP, and has equivalent long-term curative effect to TURP.

  7. Ⅰ期经皮肾镜取石术术后结石残留的影响因素分析%Influencing factors of residual calculi after single-session percutaneous nephrolithotomy

    Institute of Scientific and Technical Information of China (English)

    蓝志相; 蔡斌; 梁建波; 王晓平; 王伟

    2015-01-01

    目的 探讨Ⅰ期经皮肾镜取石术( PCNL)术后结石残留的主要影响因素. 方法 回顾性分析776 例Ⅰ期PCNL患者围术期资料,其中Ⅰ期术后结石残留217例. 对可能影响PCNL后结石残留的相关因素进行单因素分析,将有统计学意义指标采用多因素logistic回归模型进行分析. 结果 多因素logistic回归分析结果显示,结石负荷、肾盂类型、肾功能不全及鹿角形肾结石是Ⅰ期PCNL术后结石残留的独立危险因素(P均 1 000 mm2、分支型肾盂、鹿角形肾结石、肾功能不全均可增加Ⅰ期PCNL术后结石残留的风险. 术前改善患者肾功能,明确肾盂类型及结石负荷并采取个性化方案是降低Ⅰ期PCNL术后结石残留的重要措施.%Objective To explore the main influencing factors of residual calculi after single-session percutaneous nephrolithotomy ( PCNL) .Methods The perioperative clinical data of 776 patients who underwent single-session PCNL were retrospectively analyzed.And residual calculi were observed in 217 patients after single-session PCNL.The probable related influencing factors of residual calculi after single-session PCNL were assessed by univariate analysis, and the statistically significant factors were analyzed by multivariate logistic regression analysis.Results Multivariate logistic regression analysis showed that calculus load,type of renal pelvis,renal insufficiency and staghorn-shaped renal calculi were independent risk factors for residual calculi after single-session PCNL(all P<0.05).Conclusion Calculus load more than 1000 mm2 ,branched renal pelvis,staghorn-shaped renal calculi and renal insufficiency might increase the risk of residual calculi after single-session PCNL.The important management for reducing residual calculi after single-session PCNL includes the preoperative improvement of renal insufficiency and the application of individualized approach following confirming the type of renal pelvis and calculus load

  8. Content and Face Validation of a Curriculum for Ultrasonic Propulsion of Calculi in a Human Renal Model

    Science.gov (United States)

    Dunmire, Barbrina; Cunitz, Bryan W.; He, Xuemei; Sorensen, Mathew D.; Harper, Jonathan D.; Bailey, Michael R.; Lendvay, Thomas S.

    2014-01-01

    Abstract Purpose: Ultrasonic propulsion to reposition urinary tract calculi requires knowledge about ultrasound image capture, device manipulation, and interpretation. The purpose of this study was to validate a cognitive and technical skills curriculum to teach urologists ultrasonic propulsion to reposition kidney stones in tissue phantoms. Materials and Methods: Ten board-certified urologists recruited from a single institution underwent a didactic session on renal ultrasound imaging. Subjects completed technical skills modules in tissue phantoms, including kidney imaging, pushing a stone through a translucent maze, and repositioning a lower pole calyceal stone. Objective cognitive and technical performance metrics were recorded. Subjects completed a questionnaire to ascertain face and content validity on a five-point Likert scale. Results: Eight urologists (80%) had never attended a previous ultrasound course, and nine (90%) performed renal ultrasounds less frequently than every 6 months. Mean cognitive skills scores improved from 55% to 91% (p<0.0001) on pre- and post-didactic tests. In the kidney phantom, 10 subjects (100%) repositioned the lower pole calyceal stone to at least the lower pole infundibulum, while 9 (90%) successfully repositioned the stone to the renal pelvis. A mean±SD (15.7±13.3) pushes were required to complete the task over an average of 4.6±2.2 minutes. Urologists rated the curriculum's effectiveness and realism as a training tool at a mean score of 4.6/5.0 and 4.1/5.0, respectively. Conclusions: The curriculum for ultrasonic propulsion is effective and useful for training urologists with limited ultrasound proficiency in stone repositioning technique. Further studies in animate and human models will be required to assess predictive validity. PMID:24228719

  9. Geoenvironmental factors related to high incidence of human urinary calculi (kidney stones) in Central Highlands of Sri Lanka.

    Science.gov (United States)

    Abeywickarama, Buddhika; Ralapanawa, Udaya; Chandrajith, Rohana

    2016-10-01

    An area with extremely high incidence of urinary calculi was investigated in the view of identifying the relationship between the disease prevalence and the drinking water geochemistry. The prevalence of the kidney stone disease in the selected Padiyapelella-Hanguranketa area in Central Highlands of Sri Lanka is significantly higher compared with neighboring regions. Drinking water samples were collected from water sources that used by clinically identified kidney stone patients and healthy people. A total of 83 samples were collected and analyzed for major anions and cations. The anions in the area varied in the order HCO3 (-) > Cl(-) > SO4 (2-) > NO3 (-) and cations varied in the order Ca(2+) > Mg(2+) > Na(+) > K(+) > Fe(2+). The dissolved silica that occurs as silicic acid (H4SiO4) in natural waters varied from 8.8 to 84 mg/L in prevalence samples, while it was between 9.7 and 65 mg/L for samples from non-prevalence locations. Hydrogeochemical data obtained from the two groups were compared using the Wilcoxon rank-sum test. It showed that pH, total hardness, Na(+), Ca(2+) and Fe(2+) had significant difference (p plots, Gibbs' plot and factor analysis indicated that the chemical composition of water sources in this area is strongly influenced by rock-water interactions, particularly the weathering of carbonate and silicate minerals. This study reveals a kind of association between stone formation and drinking water geochemistry as evident by the high hardness/calcium contents in spring water used by patients. PMID:26620679

  10. Epidemiological Survey of Renal Calculi in Adult Yao Population in Guangxi%广西瑶族成年人肾结石流行病学调查

    Institute of Scientific and Technical Information of China (English)

    汤宗源; 江顺建; 李江; 李秀清; 钟明涛; 黄日波; 李萍; 邹爱俐

    2015-01-01

    目的:分析广西恭城瑶族自治县瑶族成年人肾结石的患病状况及其影响因素。方法采用整群分层随机抽样方法,于2012年10—12月选取广西恭城瑶族自治县7个社区、31个村屯共3475例常住瑶族人为调查对象。采用自行设计的调查问卷,调查研究对象人口学资料、生活饮食习惯、疾病史。并采用肾脏 B 超确诊肾结石患者。采用单因素分析和多因素 Logistic 回归分析肾结石的影响因素。结果3475例调查对象中肾结石患者418例,患病率为12.0%(418/3475)。不同性别、年龄、职业、文化程度、婚姻状况、年收入、体质指数(BMI)者肾结石患病率比较,差异有统计学意义(P <0.05)。是否吸烟、是否饮酒、不同饮用水源、睡前是否饮水、饮用水是否煮沸及不同频率食用新鲜绿色蔬菜、豆类制品、柿子、动物内脏者肾结石患病率比较,差异均有统计学意义(P <0.05)。既往是否有胆结石、肾炎、泌尿系结石者肾结石患病率比较,差异有统计学意义( P <0.05)。多因素 Logistic 回归分析结果显示:年龄、性别、职业、文化程度、年收入、饮用水源、饮用水煮沸、食柿子、食新鲜绿色蔬菜、食豆类制品、食动物内脏及既往有肾炎、泌尿系结石史是肾结石的影响因素(P <0.05)。结论该地区瑶族成年人肾结石患病率较高,与饮食等多种因素有关,应针对高危因素开展肾结石的防治工作。%Objective To investigate the prevalence of renal calculi in adult Yao population in Gongcheng Yao Autonomous County of Guangxi and its influencing factors. Methods By using stratified cluster random sampling method,we enrolled 3 475 Yao permanent residents from 7 communities and 31 villages of Gongcheng County from October to December in 2012. A self - designed questionnaire was employed to investigate on demographic data,life habit

  11. 结石肾并肾癌的诊断和治疗%Diagnosis and treatment of renal calculi associated with renal cell carcinoma

    Institute of Scientific and Technical Information of China (English)

    周光; 宋超; 喻翔翔; 杨嗣星

    2011-01-01

    Objective To investigate the diagnosis and treatment of renal calculi associated with renal cell carcinoma ( RCC). Methods The clinical data of 9 cases of renal calculi associated with RCC were retrospectively analyzed. Results The diagnosis were confirmed in 2 cases before open surgery. The remaining were diagnosed during or after operation ;4 cases with doubtful focus were confirmed RCC by in-tra - operative frozen section ,3 were confirmed by pathology after nephrectomy. All 7 confirmed cases were performed radical nephrorectomy. All cases underwent follow up:2 cases were dead of metastasis of RCC within 1 year,and no recurrence or metastasis was noted in other 7 cases during follow up. Conclusion The pre - diagnosis of renal calculi associated with RCC is difficult. Patients with renal calculi over 50 years of age or with a long standing history of urolithiasis within the background of an atypical or asympto-matic presentation should be screened for the possibility of an occult renal cancer by using appropriate in-vestigations. Once the diagnosis is confirmed, radical nephrorectomy rather than treatment of renal calculi should be performed as soon as possible.%目的 探讨结石肾合并肾癌的诊断与治疗策略.方法 回顾分析9例结石肾合并肾癌患者的病例资料及诊治经过.结果 9例患者中2例术前检查已发现结石肾合并肾占位病变行根治性肾切除;另7例中4例因结石手术术中发现可疑病灶行快速冰冻切片病检证实为肾细胞癌而行根治性肾切除,3例因结石肾积水合并感染形成脓肾行患肾切除,术后病理证实为肾癌.对所有患者进行随访,2例术后1年内死于癌肿转移,其他患者在随访期间未发现肾癌复发或转移.结论 结石肾合并肾癌诊断较困难,对50岁以上肾结石患者或长期肾结石并非典型性症状患者,应考虑结石合并肾癌的可能,应联合多种检查方法对其进行检查,争取术前明确诊断.对术

  12. RANDOMIZED TRIAL OF THE SAFETY AND EFFICACY OF TAMSULOSIN AND SILODOSIN IN MEDICAL EXPULSIVE THERAPY FOR DISTAL THIRD URETERIC CALCULI

    Directory of Open Access Journals (Sweden)

    Rajanna

    2014-11-01

    Full Text Available INTRODUCTION: Urolithiasis is a common condition that affects approximately 5% to 10% of the population and the incidence of Urolithiasis is rising. Ureteric stones account for 20% of urinary tract stones and about 70% of them are found in the lower third of the ureter at presentation. Recent literatures show the efficacy of various drugs and minimally invasive procedures for the management of lower third ureteral stones. We performed a randomized, prospective study to assess and compare the efficacy of tamsulosin and silodosin as medical expulsive therapy for lower third ureteral stones. SETTING AND DURATION: Department of Surgery, Hassan Institute of Medical Sciences/ Teaching Hospital, Hassan. from August 2013 to August 2014. MATERIALS AND METHODS: The prospective data of 60 symptomatic patients with unilateral, lower third ureteral calculi of less than ≤10 mm were randomly allocated for out- patient treatment with tamsulosin and silodosin groups Patients aged ≥ 18 years with a single, unilateral, symptomatic, radio-opaque ureteric stone of 10 mm or smaller in the largest dimension located between the lower border of the sacroiliac joint and vesico-ureteric junction were included. For Group I tamsulosin a daily single dose of 0.4 mg for 28days and for Group II a daily single dose of silodosin 8mg was given. Nonsteroidal anti-inflammatory drugs were used on demand for both the groups. All the patients were told to observe passage of stone by filtering urine stream. The primary end point was the expulsion of the stone and the secondary end points were expulsion time, analgesic use, socioeconomic status, need for hospitalization, endoscopic treatment and drug side effects were documented. RESULTS: The stone expulsion rates in patients treated with tamsulosin and silodosin were 83.3% and 86.6% respectively. Mean stone expulsion times in tamsulosin group and silodosin group were 6.8 and 6.2 days respectively. Mean number of pain episodes were

  13. Large subcapsular hematoma following ureteroscopic laser lithotripsy of renal calculi in a spina bifida patient: lessons we learn

    Directory of Open Access Journals (Sweden)

    Vaidyanathan S

    2016-08-01

    % to 17%. Follow-up CT revealed reduction in the size of subcapsular hematoma, no hydronephrosis, and several residual calculi.Conclusion: Risk of subcapsular hematoma following ureteroscopic lithotripsy can be reduced by avoiding prolonged endoscopy and performing ureteroscopy under low pressure. When a paraplegic patient develops features of infection after ureteroscopy, renal imaging should be carried out promptly. Extended perioperative medical care is required for spinal cord injury patients because of their propensity to develop sepsis. Antibiotics should be prescribed on the basis of recent urine microbiology results. Spinal cord injury patients should be treated by senior, experienced doctors and cared for in a spinal injuries unit in order to minimize complications. Keywords: spina bifida, paraplegia, ureteroscopy, lithotripsy, subcapsular hematoma, prevention

  14. The clinical analysis of 300 Patients with Lower Ureteral Calculi%输尿管下段结石300例临床分析

    Institute of Scientific and Technical Information of China (English)

    王欣

    2012-01-01

    目的 探讨输尿管下段结石的治疗方法.方法 回顾性分析300例输尿管下段结石患者的临床资料.300例输尿管下段结石患者中,采用体外冲击波碎石术(ESWL)治疗171例,输尿管镜气压弹道碎石术(URL)治疗95例,腹腔镜输尿管切开取石术治疗34例.结果 ESWL治疗171例患者,1个月后结石排净率为91.81%(151/171);URL治疗95例,输尿管下段结石取净率为86.32%( 82/95);腹腔镜输尿管切开取石取净率为100%(34/34).结论 ESWL可作为输尿管下段结石的首选方法,但当结石长径≥1 cm时,URL的疗效明显优于ESWL;对于合并输尿管下段狭窄或输尿管息肉,结石嵌顿严重,周围形成肉芽组织包裹的输尿管下段结石的治疗,腹腔镜输尿管切开取石术疗效确切.%Objective To evaluate the treatment of lower ureteral calculi.Methods Clinical data of 300 cases of lower ureteral calculi were retrospectively analyzed.Among the 300 patients with lower ureteral calculi,171 patients were treated with extracorporeal shock wave lithotripsy (ESWL),95 patients were treated with ureteroscopic lithotripsy (URL),34 patients were treated with laparoscopic ureterolithotomy.Results The clearances of the calculus was 91.81% with the treatment of ESWL,86.32% with the treatment of URL and 100% with the treatment of laparoscopic ureterolithotomy after one month of the treatments.Conclusion ESWL is the preferred methods for the treatment of lower ureteral stones.But when the stones≥ 1 cm,URL is superior to ESWL in efficacy; Laparoscopic ureterolithotomy is effective for the treatment of lower ureteral stones which combined with ureteral stricture or ureteral polyps,and with serious incarceration,granulation tissue wrapped around the stone.

  15. Endoscopic treatment of urinary calculi in allograft kidneys%移植肾输尿管结石的腔镜治疗

    Institute of Scientific and Technical Information of China (English)

    王沈阳; 苏顺业; 张余芳; 刘鲁东; 高远; 张明荣; 周全

    2010-01-01

    Objective To evaluate the effect of endoscopic treatment for urinary calculi in allograft kidneys. Methods The clinical files of urolithiasis in allograft kidneys in 5 cases were retrospectively analyzed consulting with literature,overall 5 cases of urinary calculi in allograft kidneys were treated by endoscopic technique.Among them, the stone size ranged from 8 mm to 48 mm in greatest dimension, and the time after transplantation ranged from 7 months to 9 years. Results YAG Lithotripsy by ureteroscopy was performed successfully in 4 cases;one underwent ESWL after failed ureteroscopy. The patients were followed up for 1 ~ 6 years, and all the patients and transplanted kidneys survived well. The kidney function returned to normal in 5 patients and no stones recurred. Conclusion Due to its less trauma and excellent outcome, minimally invasive endoscopy should be chosen for treatment of urinary calculi in allograft kidney so as to protect kidney function as far as possible.%目的 探讨肾移植术后移植肾输尿管结石的腔镜治疗效果.方法 结合病史及文献对5例移植肾输尿管结石患者的临床资料进行系统性回顾分析,5例均行输尿管镜钬激光碎石术,其中结石直径为7~48 mm,接受肾移植术的时间约为7个月~9年.结果 4例行输尿管镜钬激光碎石术碎石成功;1例在碎石过程中,结石被冲洗液冲入肾盂,术后留置D-J管行ESWL术,2次后排净结石.术后随访1~6年,人肾均存活良好,5例患者肾功能恢复正常,无结石复发.结论 移植肾输尿管结石处理应选择创伤小、效果好的腔镜微创治疗,尽而更好地保护肾功能.

  16. Transureteroscopic holmium laser lithotripsy for ureteral calculi%输尿管硬镜钬激光治疗输尿管结石

    Institute of Scientific and Technical Information of China (English)

    石红林; 朱晓博; 丁春霞; 张素琴; 魏金星

    2012-01-01

    Objective:To analyze the effect and evaluate the clinical value of transureteroscopic holmium laser lithotripsy for ureteral calculi. Method: A total of 406 cases of ureteral calculi were included in the study, which treated by Wolf F8/9. 8 ureteroscope, Germany Wavelight Auriga holmium laser machine, 365 — 600 μm fiber, with a pulse energy of 500—1 200 mJ and frequency 5 —12 Hz. All were followed up for 1 — 30 months to analyze and summarize the treatment effect. Result: Holmium laser lithotripsy was successfully completed in 387 cases at one time, except the stone migration to renal pelvis in 9 cases, ureteral stenosis in 10 cases, which caused uret-eroscopy failing to reach the stone, so other methods was selected. The operation time was 8 — 63 minutes with a mean of 21 minutes. Postoperative complications in 301 cases with hematuria, disappeared in 3 days, except 1 case up to 13 days; in 316 cases with dysuria, lasted 1 — 6 clays; fever in 18 cases, normal in 3 days, double J stent was retained after operation for 14 — 150 days with a mean of 30 days. 4 cases of kidney stones were treated by ESWL. Stone free rate was 89. 29% (100112) in upper ureter, 95. 10%(136/143) in middle, 98. 68% (149/151) in lower part. Conclusion: Holmium laser lithotripsy under ureteroscope for ureteral calculi is mini-invasive and effective. Using high frequency and low energy can reduce the incidence of upper ureteral calculi fefowing to kidney.%目的:通过分析输尿管硬镜钬激光输尿管结石的治疗效果,评价其临床应用价值.方法:应用Wolf F8/9.8输尿管硬镜,德国Wavelight Auriga钬激光治疗仪,365~600 μm光纤,激光能量500~1 200 mJ,频率5~l2Hz治疗406例输尿管结石患者,随防1~30个月,分析总结治疗效果.结果:除9例输尿管镜检查时结石回流入肾内,无法碎石,10例因输尿管结石远端狭窄,输尿管镜未能到达结石部位改其它方法治疗,余病人均一次成功.手术时间8~63 min

  17. Effect of Dietary Countermeasures and Impact of Gravity on Renal Calculi Size Distributions Predicted by PBE-System and PBE-CFD Models

    Science.gov (United States)

    Kassemi, M.; Thompson, D.; Goodenow, D.; Gokoglu, S.; Myers, J.

    2016-01-01

    Renal stone disease is not only a concern on earth but can conceivably pose a serious risk to the astronauts health and safety in Space. In this work, two different deterministic models based on a Population Balance Equation (PBE) analysis of renal stone formation are developed to assess the risks of critical renal stone incidence for astronauts during space travel. In the first model, the nephron is treated as a continuous mixed suspension mixed product removal crystallizer and the PBE for the nucleating, growing and agglomerating renal calculi is coupled to speciation calculations performed by JESS. Predictions of stone size distributions in the kidney using this model indicate that the astronaut in microgravity is at noticeably greater but still subcritical risk and recommend administration of citrate and augmented hydration as effective means of minimizing and containing this risk. In the second model, the PBE analysis is coupled to a Computational Fluid Dynamics (CFD) model for flow of urine and transport of Calcium and Oxalate in the nephron to predict the impact of gravity on the stone size distributions. Results presented for realistic 3D tubule and collecting duct geometries, clearly indicate that agglomeration is the primary mode of size enhancement in both 1g and microgravity. 3D numerical simulations seem to further indicate that there will be an increased number of smaller stones developed in microgravity that will likely pass through the nephron in the absence of wall adhesion. However, upon reentry to a 1g (Earth) or 38g (Mars) partial gravitational fields, the renal calculi can lag behind the urinary flow in tubules that are adversely oriented with respect to the gravitational field and grow agglomerate to large sizes that are sedimented near the wall with increased propensity for wall adhesion, plaque formation, and risk to the astronauts.

  18. Nursing Experience of Gout Calculi in Patients Undergoing Resection%痛风结石切除术患者的护理体会

    Institute of Scientific and Technical Information of China (English)

    徐慧慧

    2014-01-01

    目的:分析痛风结石切除术后的护理措施。方法分析我科对2013年05月~12月进行的4例痛风结石手术切除患者进行手术前后的护理措施,总结在心理、术前准备、术后恢复方面的护理经验。结果经严密护理,患者对痛风疾病有了深刻的了解,术后恢复快,住院时间短,对护理工作满意。结论认为术前加强患者的心理护理,健康宣教,术后密切观察生命体征的变化,指导患者功能锻炼是患者顺利康复的保证。%Objective Tto analyze the gout calculi after resection of nursing measures. Methods Analysis of our department in 2013 05 months to 2013 December 4 cases of gout calculi operation excision were nursing before and after operation, summarized in the psychological, preoperative preparation, postoperative recovery nursing experience. Results Through careful nursing, patients have a deep understanding of the gout disease, faster postoperative recovery, shorter hospitalization time, satisfaction to nursing work. Conclusion Preoperative mental nursing, the patient's health education, change after close observation of vital signs, guide the patients to exercise is to ensure the successful rehabilitation of the patients.

  19. Pre- and Post-operative cortical function of the kidney with staghorn calculi assessed by sup(99m)Tc-DMSA renal scintigraphy

    International Nuclear Information System (INIS)

    sup(99m)Tc-DMSA renal scintigraphy consisting of the cortical image and DMSA renal uptake was used to assess the pre- and post-operative renal function in 39 patients with staghorn calculi or complicated calculi occupying more than 2 major calices. Extended pyelolithotomy was performed on 14 patients, nephrolithotomy on 14 patients, pyelolithotomy combined with nephrotomy on 7 patients, and partial nephrectomy on 4 patients. Nine out of 14 patients who underwent pyelolithotomy and 4 out of 14 patients who underwent nephrolithotomy showed an increase or no change in the postoperative DMSA renal uptake in the diseased kidney. However, there was no increase in the postoperative DMSA renal uptake in the patients who underwent pyelolithotomy combined with nephrotomy or partial nephrectomy. Eight percent of the preoperative DMSA renal uptake in the diseased kidney seems to be the absolute level for predicting a postoperative recovery of the kidney function. The contralateral kidney function can affect the postoperative recovery of the function in the operative side. It seems to be hard to expect an increment in the DMSA renal uptake postoperatively when the ratio of DMSA renal uptake in the operative side to the total DMSA renal uptake is less than 20%. At least 6 months of the follow-up period is necessary for the evaluation of the kidney function in the operative side. DMSA renal scintigraphy is a useful modality to assess pre- and post-operative kidney function in nephrolithiasis from the point of both morphological and functional changes in the renal cortex. (author)

  20. Pre- and post-operative cortical function of the kidney with staghorn calculi assessed by sup(99m)Tc-DMSA renal scintigraphy

    Energy Technology Data Exchange (ETDEWEB)

    Kawamura, Juichi (Kyoto Univ. (Japan). Faculty of Medicine)

    1982-08-01

    sup(99m)Tc-DMSA renal scintigraphy consisting of the cortical image and DMSA renal uptake was used to assess the pre- and post-operative renal function in 39 patients with staghorn calculi or complicated calculi occupying more than 2 major calices. Extended pyelolithotomy was performed on 14 patients, nephrolithotomy on 14 patients, pyelolithotomy combined with nephrotomy on 7 patients, and partial nephrectomy on 4 patients. Nine out of 14 patients who underwent pyelolithotomy and 4 out of 14 patients who underwent nephrolithotomy showed an increase or no change in the postoperative DMSA renal uptake in the diseased kidney. However, there was no increase in the postoperative DMSA renal uptake in the patients who underwent pyelolithotomy combined with nephrotomy or partial nephrectomy. Eight percent of the preoperative DMSA renal uptake in the diseased kidney seems to be the absolute level for predicting a postoperative recovery of the kidney function. The contralateral kidney function can affect the postoperative recovery of the function in the operative side. It seems to be hard to expect an increment in the DMSA renal uptake postoperatively when the ratio of DMSA renal uptake in the operative side to the total DMSA renal uptake is less than 20%. At least 6 months of the follow-up period is necessary for the evaluation of the kidney function in the operative side. DMSA renal scintigraphy is a useful modality to assess pre- and post-operative kidney function in nephrolithiasis from the point of both morphological and functional changes in the renal cortex.

  1. Procalcitonin determined at emergency department as an early indicator of progression to septic shock in patient with sepsis associated with ureteral calculi

    Science.gov (United States)

    Ko, Young Hwii; Ji, Yoon Seob; Park, Sin-Youl; Kim, Su Jin; Song, Phil Hyun

    2016-01-01

    ABSTRACT Introduction: To investigate the role of initial procalcitonin (PCT) level as an early predictor of septic shock for the patient with sepsis induced by acute pyelonephritis (APN) secondary to ureteral calculi. Materials and Methods: The data from 49 consecutive patients who met criteria of sepsis due to APN following ureteral stone were collected and divided into two groups: with (n=15) or without (n=34) septic shock. The clinical variables including PCT level for this outcome were retrospectively compared by univariate analysis, followed by multivariable logistic regression model. Results: All subjects had hydronephrosis, and were hospitalized with the mean of 11.8 days (3–42 days). The mean size of the ureteral stones was 7.5mm (3–30mm), and 57% were located in upper ureter. At univariate analysis, patients with septic shock were significantly older, a higher proportion had hypertension, lower platelet count and serum albumin level, higher CRP and PCT level, and higher positive blood culture rate. Multivariate models indicated that lower platelet count and higher PCT level are independent risk factors (p=0.043 and 0.046, respectively). In ROC curve, the AUC was significantly wider in PCT (0.929), compared with the platelet count (0.822, p=0.004). At the cut-off of 0.52ng/mL, the sensitivity and specificity were 86.7% and 85.3%. Conclusion: Our study demonstrated elevated initial PCT levels as an early independent predictor to progress into septic shock in patients with sepsis associated with ureteral calculi. PMID:27256181

  2. 复杂性肾结石不同手术治疗方法的疗效分析%Different surgical procedures for complex renal calculi

    Institute of Scientific and Technical Information of China (English)

    刘永昌; 陈志雄; 潘翔

    2013-01-01

    Objective To compare the clinical efficacy of mini-invasive percutaneous nephrolithotomy (MPCNL) with that of open surgery for the treatment of complex renal calculi.Methods 82 patients with complex renal calculi who had undergone surgical treatment during the period of April 2006 to April 2011 were assigned to MPCNL group (41 patients) and open-surgery group (41 patients) based on the type of procedures.Surgical duration,intraoperative bleeding volume,rate of complications,postoperative length of hospital stay,total medical cost,and rate of calculi clearance were compared between the two groups.Results Surgical duration and length of hospital stay were shorter,intraoperative bleeding volume was less,rate of complications was lower,medical cost was greater,and rate of calculi clearance was higher in MPCNL group than in open-surgery group [(110 ± 21)min vs.(178 ± 33)min,(7.31 ± 0.94)days vs.(13.32 ± 2.84)days,(96.25 ± 12.34)ml vs.(176.56 ± 11.35)ml,12.2% (5/41) vs.29.3% (12/41),(12 636.6 ± 672.37) yuans vs.(8532.20 ± 350.56) yuans,and 80.49% (33/41) vs.65.85% (27/41); P<0.05].Conclusions As compared with open surgery,mini-invasive percutaneous nephrolithotomy has shorter surgical duration and postoperative hospital stay,higher rate of calculi clearance,quicker recovery,less blood loss,and fewer complications,though it has higher total medical cost.It is a safe,effective way to treat complex renal calculi.%目的 比较、分析微创经皮肾镜取石术与开放手术治疗复杂性肾结石的临床疗效.方法 选择2006年3月至2011年3月于我院接受手术治疗的82例复杂性肾结石患者,按治疗方法分为微创经皮肾镜取石组41例和开放手术组41例.比较两组在手术时间、术中出血量、并发症发生率、术后住院时间、总治疗费用及结石清除率方面的差异.结果 微创经皮肾镜取石组手术时间[(110±21) min vs.(178±33) min]、术中出血量[(96.25±12.34) ml vs.(176.56±11

  3. 三聚氰胺致泌尿系结石的动物模型研究进展%Research Progress in Animal Model of Urinary Calculi Caused by Melamine

    Institute of Scientific and Technical Information of China (English)

    石红霞; 杨淑芬; 张长荣(综述); 陆晨(审校)

    2015-01-01

    Absract:The infant urinary calculi caused by melamine contaminated infant milk powder occurred in China in September 2008 has aroused the public attention on the safety and toxicology of melamine.A large number of domestic and foreign studies found that long-term intake of large doses of melamine not only can cause urinary calculi,but also can result in abnormal kidney function and even kidney failure.To establish animal model of melamine is an effective method to study the disease etiology,pathogenic mechanism,and de-velop therapeutic regimens.Here is to make a review of the literature on the characteristics of the animal models of melamine-induced urinary calculi and kidney calculi.%2008年9月我国发生三聚氰胺污染婴幼儿奶粉所致婴幼儿泌尿系结石事件,致使三聚氰胺的毒理学安全性受到公众广泛关注。国内外大量研究发现,长期大剂量摄入三聚氰胺不仅可引起泌尿系结石,还可造成肾功能异常甚至肾衰竭。建立三聚氰胺结石动物模型是研究疾病病因、致病机制及制订治疗方案的有效方法。该文就三聚氰胺致泌尿系结石的动物模型以及三聚氰胺致肾结石动物模型的特点予以综述。

  4. 后腹腔镜下肾窦内肾盂切开取石术%Retroperitoneal laparoscopic pyelolithotomy in the treatment of intrarenal pelvic calculi

    Institute of Scientific and Technical Information of China (English)

    林超; 时少显; 李海涛; 吕共生; 和学强; 陈家旺

    2008-01-01

    Objective To evaluate the clinical efficacy and safety of retroperitoneal laparoscopic pyelolithotomy in the treatment of intrarenal pelvic staghorn calculus or multiple renal calculi. Methods Fifteen patients(9 males and 6 females)with average age of 40 years old were treated. The diameters of the calculi were from 1.5 cm to 3.7 cm. Three trocars were used in this procedure as rou-tine. The renal sinus was exposed by separating the pelvis from outside to inside until reaching the in-fundibulum of the renal calyx. Then the renal calyx was cut open and the calculus was taken out. Double J stent was placed in the ureter and the incision of pelvis was closed by 3-0 absorbable suture. The drainage tube was pulled out 3-4 d post-operatively according to the drainage quantity. Double J stent was then pulled out 2 weeks after surgery. Results All the 15 procedures were successfully completed. The average operation time was 170 min and the average post-operative hospital stay was 7 d. During the 3-15 months' follow-up, 2 patients had calculus remnants with the size of 0. 2-0.5cm in diameter. Conclusions Retroperitoneal laparoscopic pyelolithotomy provides a minimally inva-sive treatment option in patients with intrarenal pelvic staghorn calculus or multiple renal calculi. It has the advantages of good exposure, little bleeding, small incision and fast recovery.%目的 探讨后腹腔镜下肾窦内肾盂切开取石治疗肾鹿角状及多发性结石的疗效. 方法肾多发及鹿角状结石患者15例.男9例,女6例.平均年龄40岁.结石直经1.5~3.7 cm.常规用3个穿刺器,建立气腹于腹膜后间隙,紧贴肾盂外膜向肾窦内分离,暴露出肾盏漏斗部,切开取石,输尿管内置入双J管,3-0可吸收线缝合肾盂切口.冲洗、放置引流管.术后3~4 d拔出引流管.2周左右拔出双J管. 结果 15例手术均获成功,平均手术时间170 rain.术后平均住院7 d.随访3~15个月,2例有0.2~0.5 cm结石残留. 结论 后腹腔

  5. Analysis of chemical composition of urinary calculi%南疆地区197例患者泌尿系结石成份分析

    Institute of Scientific and Technical Information of China (English)

    黄睿; 孟晓辉

    2012-01-01

    Objective To analyze the composition of urinary stone and investigate its prevention method. Methods 197 cases with urinary stones related to melamine milk were collected. The qualitative determination was performed by infrared spectroscopy automatic analyzer. Results 8 components in urinary stone were detected. 98 cases (51. 8%) were pure type, while 91 cases (48. 1%) were the mixed type. 38% of the calculi were calcium-containing stones. 34. 8% of the stones were non-calcium- containing. The rest were mixed. The percentage of various stone compositions were as follows: urinary ammonium calculi was 44. 9% (48 cases) , calcium oxalate monohydrate (COM) + urinary ammonium calculi was 28. 5% (28 cases), calcium lactate was 26. 8% (24cases). The clinical features of three kinds of urinary stones were Uygur nationality cases accounted for 67% , 71% male and 52. 8% was infants under 3 years old. The proportion of patients with kidney stones was 61. 4%. The urinary stones ammonium was the main ingredient, while a certain percentage of patients with calcium oxalate stones. Conclusion Combination of case history, inferred that incidence of kidney stones in Uighur nationality is higher than that of Han nationality significantly. It is inferred that urinary ammonium stones could be easily induced by melamine milk powder.%目的 探讨南疆地区泌尿系结石患者的结石成份及防治方法.方法 搜集新疆南部地区与三聚氰胺奶粉相关尿路结石病例197例.手术取石,采用红外光谱自动分析仪定性检测.结果 除外8例资料不全,纳入统计189例,共检测出8种成份,其中单纯成份结石51.85%(98例),混合成份结石48.15%(91例).按结石主要成份分为含钙结石72例(38%),非钙结石66例(34.8%),混合型结石51例(28%).各种成份的结石病例的构成比从高到低依次为尿酸铵结石44例(44.9%),一水草酸钙和尿酸铵28例(28.5%),一水草酸钙24例(26.3%).三种结石的临床特点是67

  6. 复杂性肾结石外科治疗的安全性探讨%The safety of surgical treatment for complex renal calculi

    Institute of Scientific and Technical Information of China (English)

    许爱国; 徐冬冬; 高昕池; 徐良杰

    2013-01-01

    目的 讨论复杂性肾结石外科治疗的安全性.方法 我院于2001年3月至2012年9月期间治疗复杂性肾结石患者30例,其中肾盂切开取石15例,肾实质切开取石7例,肾窦后实质切开取石5例,肾蒂血管阻断+肾周冰块低温下肾实质切开取石术3例.总结手术效果及患者手术时间、术中出血量及术后血尿时间,评价手术治疗的安全性.结果 本组所有患者均顺利完成手术,术后一周患肾功能均恢复正常.所有患者无一例输血.残留结石5例,残石率16.67%.残石数5,残石直径0.3 ~ 0.5 cm,均为肾盏内细小结石,结合EWSL治愈.同时,本组患者手术时间为50 ~ 120 min,平均为(93±17) min;术后出血量为50~200 ml,平均为(112±36) ml;术后血尿时间12~48 h,平均为(28±7)h.结论 复杂性肾结石的外科治疗安全性较高,临床治疗中应根据结石的位置、大小选择不同的手术方法.%Objective To explore the safety of surgical treatment for complex renal calculi.Methods 30 patients with complex renal calculi who had been treated during the period of March 2001 to September 2012 were included in this study.15 patients underwent pyelolithotomy,7 received renal parenchyma incision for removing stones,5 received renal sinus parenchyma incision for stone removal,and 3 received renal pedicle vascular blocking plus renal parenchyma incision for removing stones under pararenal low temperature with ice.The efficacy of the procedures,surgical duration,postoperative bleeding volume and duration of hematuria were analyzed.The safety of the procedures were assessed.Results The procedures were successfully perfromed on all patients,and kidney function returned to normal one week after surgery.No patients needed to receive blood transfusion.Residual stones occurred in five patients,with a rate of 16.67%.There were 5 residual stones with a diameter of 0.3 cm to 0.5 cm and they were small calyceal stones,which were finally treated by

  7. Ureteroscopic Holmium Laser Combined with Ultrasound Lithotripsy for Treating Ureteral Calculi%输尿管镜下钬激光联合超声碎石治疗输尿管结石

    Institute of Scientific and Technical Information of China (English)

    黄华武; 黄群; 黄勇平; 吴军; 梁庆祖

    2015-01-01

    Objective:To investigate the method and efficacy of ureteroscopic holmium laser combined with ultrasound lithotripsy for treating ureteral calculi.Methods:163 cases of ureteral calculi were treated with ureterosopic holmium laser combined with ultrasound lithotripsy.The greatest dimension of the calculus ranged from 5 to 17 mm.The calculus were located in upper ureter in 51 cases,middle ureter in 52 cases,lower ureter in 60 cases.5 ~7F double J tube were put in routine place postoperative 1~4 weeks, antibiotics was used to prevent infection.Results:The calculi clearance rate was 95.9% (155/163) once,8 cases of failure were changed to PCNL ,open operation or double J tube and ESWL treatment , no the complications such as perforation avulsed ureter and urinary severe infection.Conclusion:The holmium laser combined ultrasound lithotripsy is a safe and effective for treating ureteral calculi ,and calculi removes completely.%目的:探讨输尿管镜下钬激光联合超声碎石治疗输尿管结石的方法和疗效。方法:采用输尿管镜下钬激光联合超声碎石治疗输尿管结石163例,结石直径5~17 mm,其中上段结石51例,中段结石52例,下段结石60例。常规放置5~7F双J管于术后1~4周拔除,应用抗生素预防感染。结果:结石一次性成功取出155例占95.09%,8例失败术中转PCNL、开放手术或留置双J管再行ESWL后结石排净。无输尿管穿孔撕脱及泌尿系严重感染等并发症。结论:输尿管镜下钬激光联合超声碎石治疗输尿管结石效率高、结石清除彻底、安全有效。

  8. Percutaneous nephrolithotripsy with 2 μm laser in treating nephritic staghorn calculi%经皮肾镜下2μm激光碎石治疗肾铸型结石55例分析

    Institute of Scientific and Technical Information of China (English)

    刘津念; 陈强; 刘显中; 刘德云; 周健; 闻斌; 刘聪颖; 张茂; 田波; 周述银

    2011-01-01

    目的 探讨经皮肾镜下2 μm激光治疗肾铸型结石的有效性、安全性及相关技巧.方法 采用经皮肾镜下2 μm激光治疗肾铸型结石患者55例,其中双侧肾铸型结石8例.结果 55例患者中,一次碎石成功率为74.5%,手术平均时间70 min;术后恢复快、并发症少;随访3个月,无残余碎石,肾积水均有不同程度减轻或消失.结论 经皮肾镜下2 μm激光治疗肾铸型结石是安全、有效的微创治疗方法,具有避免开放手术、手术时间短、恢复快、创伤小等优点.%Objective To investigate the efficacy, safety and techniques of percutaneous nephrolithotripsy with 2 μm laser in treating nephritic staghorn calculi. Methods The clinical data of 55 patients treated with PCNL with 2 μm laser during January 2008 to December 2009 were analyzed. Results Among 55 cases of nephritic staghorn calculi,all calculi were successfully fragmented,the one-time calculi clearance rate was 74. 5% (41/55) and the clearance time was 40-120 min(mean 70 min). No severe complications such as massive haemorrhage, ureteral perforation, conglutinant stenosis happened. Infection or recurrence was observed during the postoperative follow-up for 3 months, and no recurrence was found. Conclusion The percutaneous nephrolithotripsy with 2 μm laser in treating nephritic staghorn calculi could avoid patency operation,reduce the operation time,have a quick recovery and take small wound for patients. So this method has the advantages of safety and efficacy, and has higher value for widespread application in clinic.

  9. Unenhanced low-dose versus standard-dose CT localization in patients with upper urinary calculi for minimally invasive percutaneous nephrolithotomy (MPCNL

    Directory of Open Access Journals (Sweden)

    Jiang Licheng

    2014-01-01

    Full Text Available Background & objectives: With the ethical concern about the dose of CT scan and wide use of CT in protocol of suspected renal colic, more attention has been paid to low dose CT. The aim of the present study was to make a comparison of unenhanced low-dose spiral CT localization with unenhanced standard-dose spiral CT in patients with upper urinary tract calculi for minimally invasive percutaneous nephrolithotomy (MPCNL treatment. Methods: Twenty eight patients with ureter and renal calculus, preparing to take MPCNL, underwent both abdominal low-dose CT (25 mAs and standard-dose CT (100 mAs. Low-dose CT and standard-dose CT were independently evaluated for the characterization of renal/ureteral calculi, perirenal adjacent organs, blood vessels, indirect signs of renal or ureteral calculus (renal enlargement, pyeloureteral dilatation, and the indices of localization (percutaneous puncture angulation and depth used in the MPCNL procedure. Results: In all 28 patients, low-dose CT was 100 per cent coincidence 100 per cent sensitive and 100 per cent specific for depicting the location of the renal and ureteral calculus, renal enlargement, pyeloureteral dilatation, adjacent organs, and the presumptive puncture point and a 96.3 per cent coincidence 96 per cent sensitivity and 93 per cent specificity for blood vessel signs within the renal sinus, and with an obvious lower radiation exposure for patients when compared to standard-dose CT (P<0.05. The indices of puncture depth, puncture angulation, and maximum calculus transverse diameter on the axial surface showed no significant difference between the two doses of CT scans, with a significant variation in calculus visualization slice numbers (P<0.05. Interpretation & conclusions: Our findings show that unenhanced low-dose CT achieves a sensitivity and accuracy similar to that of standard-dose CT in assessing the localization of renal ureteral calculus and adjacent organs conditions and identifying the

  10. Clinical Study of Ureter Mirror in the Treatment of Ureteral Calculi%输尿管镜治疗输尿管结石的临床研究

    Institute of Scientific and Technical Information of China (English)

    魏奇

    2016-01-01

    Objective To study the Ureter mirror (Ureter mirror, UM) in the treatment of ureteral calculus (Ureteral calculi,UC) clinical efficacy; Methods January 2015 forecast December UC patients receiving treatment in hospital in 78 cases, UM-line treatment, observe the upper segment of ureter, middle and lower exploration success rate of stones and the total success rate. Results The success rate of upper ureteral stone removal was 88.89%, the Success rate of middle ureteral stone was 95.24%, the success rate of lower ureteral stone was 95.83%, upper, middle and lower part of the ureter stones no significant differences in success rates (P>0.05). Total exploration success rate of 94.87%.Total ex-ploration success rate of 94.87%. Conclusion UM high UC exploration success rate, effective, more reliable method is the treatment of UC, and clinical applications.%目的:研究输尿管镜(Ureter mirror, UM)治疗输尿管结石(Ureteral calculi,UC)的临床疗效;方法选择2015年1一12月于该院接受治疗的UC患者78例,行UM治疗,观察输尿管上段、中段、下段取石成功率及取石总成功率。结果输尿管上段取石成功率为88.89%,输尿管中段取石成功率为95.24%,输尿管下段取石成功率为95.83%,输尿管上、中、下段取石成功率差异无统计学意义(P〉0.05)。总取石成功率为94.87%。总取石成功率为94.87%。结论 UM治疗UC取石成功率高,疗效显著,是治疗UC较为可靠的方法,值得临床应用。

  11. Treatment of upper urinary tract calculi with flexible cystoscope conducted holmium laser lithotripsy via percutaneous nephrostomy%经皮肾造瘘软膀胱镜下钬激光碎石术治疗上尿路结石

    Institute of Scientific and Technical Information of China (English)

    卢剑; 肖春雷; 马潞林; 庄申榕; 刘余庆; 田晓军; 张荣新

    2008-01-01

    Objective To assess the efficacy and safety of flexible cystoscope conducted holmium laser lithotripsy via percutaneous nephrostomy in the treatment of upper urinary tract calculi.Methods The flexible cystoscope conducted holmium laser lithotripsy via percutaneous nephrostomy was performed on 26 patients from Jul 2005 to Jan 2007. Among these patients, 8 had bilateral renal calculi and ureteral calculi, 5 had multiple renal calculi, 4 had renal calyx calculi and 9 had ureteral calculi. The average diameter of the calculus was 2.2 cm (range from 1.0-3.2 cm). Four patients had mild hydronephrosis, others had moderate or severe hydronephrosis. Insufficient renal function was noted in 13 cases. The procedure was performed via a single tract through the middle calyx under the ultrasonic guidance in all cases.Results Twenty-two cases achieved stone free at primary procedure, secondary procedure was needed in 4 cases. A 18 F tract was used in 18 cases and 24 F tract was used in the left 8 cases. The average operation time was 72 min, stone-free rate was 96.2%(25/26),and there was no blood transfusion. One patient had fever after the procedure and recovered 2 days after the administration of antibiotics. No other complication was recorded. In an average 11 month follow-up in 22 patients, hydronephrosis reduction was significant observed by ultrasound scan. No calculus relapse was found.Conclusions Flexible cystoscope conducted holmium laser lithotripsy via percutaneous nephrostomy is an effective and minimally invasive technique for the treatment of upper urinary tract calculus. It has the advantages in dealing with the calyx and ureteral calculus located in the proximal or middle segment as well.%目的 探讨经皮肾造瘘软膀胱镜下应用钬激光治疗上尿路结石的有效性与安全性.方法经皮肾造瘘软膀胱镜下应用钬激光治疗肾和输尿管中上段结石26例.其中肾结石合并输尿管结石8例、肾多发结石5例、

  12. The combination of three endoscopes ( laparoscope, choledochoscope, duodenoscope) in treatment of complicated intra- and extrahepatic bile duct calculi%三镜联合治疗复杂性肝内外胆管结石的体会

    Institute of Scientific and Technical Information of China (English)

    王卫斌

    2012-01-01

    目的:分析复杂肝内外胆管结石的有效治疗方法及三镜(腹腔镜、胆道镜、十二指肠镜)联合治疗的优势.方法:回顾分析2009年8月至2011年8月为100例肝内外胆管结石患者行三镜联合手术的临床资料,并对结果进行随访.结果:79例成功施行胆总管一期缝合术,术后5~8d拔除鼻胆管,患者治愈出院.19例放置T管,12~15 d后带管出院,6~8周经胆道造影检查无特殊发现,遂拔除T管;其中3例发现胆道残留结石,术后经T管胆道镜取石成功,患者治愈出院.2例合并胆管癌,1例中转开腹,1例植入金属支架.术后随访3~6个月,2例胆管癌患者均死亡,余者均无结石复发、胆道狭窄等并发症发生.结论:三镜联合治疗复杂性肝内外胆管结石具有患者创伤小、康复快等特点,可降低并发症发生率及残石率,技术较成熟,值得临床推广应用.%Objective; To analyze the efficiency and superiority of combination of three endoscopes (laparoscope, choledocho-scope,duodenoscope) in treatment of complicated intra- and extrahepatic bile duct calculi. Methods:The clinical data of 100 patients with intra- and extrahepatic bile duct calculi who underwent combined three-microscopic surgery from Aug. 2009 to Aug. 2011 was analyzed retrospectively. Results: Primary suture of common bile duct was successfully performed in 79 patients, the nasobiliary tube was removed 5-8 days later,and these patients were cured. T-tube was placed in 19 patients who were discharged with tube 12-15 days after operation. The T-tube was removed after no special finding was noticed in the eholangiography. Residual calculi in bile duct were found in 3 patients,and the calculi were removed through T-tube sinus by choledochoscope,patients were cured and discharged. 2 cases were combined with bile duct carcinoma, 1 case was converted to laparotomy,and 1 patient was implanted metal stent. During the follow-up of 3-6 months,2 patients with carcinoma

  13. 多排CT对肾结石并肾盂恶性肿瘤的诊断价值%Value of Multi-slice CT for the Diagnosis of Kidney Calculi with Renal Pelvis Malignant Tumor

    Institute of Scientific and Technical Information of China (English)

    易志军; 刘建滨; 范立新; 谢安; 郑海军; 王诗斌; 彭国洪

    2012-01-01

    [Objective] To explore the CT diagnosis and the reason of missed diagnosis of kidney calculi with renal pelvis malignant tumor. [Methods] The CT data of 9 cases of kidney calculi with renal pelvis malignant tumor confirmed by pathology were analyzed retrospectively. The site of pathogenesis, histological type, metastasis, complication and the relation with the surrounding tissue were observed. [Results] Among 9 cases of kidney calculi with renal pelvis malignant tumor, 5 cases were transitional cell carcinoma, 3 cases were squamous cell carcinoma and 1 case was adenocarcinoma. Retroperitoneal lymph node metastasis was found in 5 cases including one case of adenocarcinoma and one case of transitional cell carcinoma involving the metastasis of renal capsule and adjacent adipose tissue, liver and adrenal gland. Seven cases were combined with the inflammation of renal pelvis and ureter or pyonephrosis. Three cases were combined with inflammatory granulation of renal pelvis. Two cases of transitional cell carcinoma and one case of cases of squamous cell carcinoma were misdiagnosed as kidney calculi with hydronephrosis infection. The definite diagnosis rate was 66. 7% (6/9) and the misdiagnosis rate was 33. 3% (3/9). [Conclusion] Multi-slice CT for kidney calculi with renal pelvis malignant tumor has higher diagnostic value. However, kidney calculi with renal pelvis accompanied by other lesions are easy to be misdiagnosed.%[目的]探讨肾结石并肾盂恶性肿瘤的CT诊断和漏诊原因.[方法]回顾性分析经手术病理证实的9例肾结石并肾盂恶性肿瘤的CT资料,重点观察肾结石并肾盂恶性肿瘤的发生部位、病理类型、有无转移、合并症及与周围组织关系.[结果]9例肾结石并肾盂恶性肿瘤患者5例为肾盂移行细胞癌,3例为肾盂鳞癌,1例腺癌;5例有腹膜后淋巴结转移,鳞癌、移行细胞癌各1例,累及肾被膜及邻近脂肪组织及肝、肾上腺等多处转移;7例合并肾盂、

  14. Stage Ⅰ minimally invasive percutaneous nephrolithotomy for calculi complicated with pyonephrosis%Ⅰ期微通道经皮肾穿刺取石术治疗结石性脓肾

    Institute of Scientific and Technical Information of China (English)

    袁秦波; 王强东; 董振佳; 肖旭; 颜姚

    2014-01-01

    Objectives To evaluate the safety and efficacy of stage-Ⅰ minimally invasive percutaneous nephrolithotomy (MPCNL) for the treatment of upper urinary calculi complicated with pyonephrosis.Methods From January 2012 to June 2013,a total of 26 patients with upper urinary calculi complicated with pyonephrosis were treated with stage · Ⅰ MPCNL.Of the patients,8 had upper ureteral calculi,9 showed calculi in both kidneys,13 suffered from renal pelvis calculi.Of the patients,11 complained of low back pain at the affected side,5 had fever before operation,9 assumed bacteria culture positive in midstream urine.Results The mean operation time was 49.2 ± 13.2 minutes in our patients.The stones were removed on one session in 22 cases(80.8 %).Mean hospital stays was 8.38 ± 0.98 days.Six patients confirmed bacteria culture positive in urine in the kidney pelvis,1 patient confirmed positive blood culture after surgery.Eight patients appeard postoperative fever (Greater than 38 degrees Celsius),up to 39.6 degrees Celsius.Of the patients,2 had a transient fever,4 had a persistent fever last 1 to 3 days and 2 had a persistent fever last 4 to 5 days.Conclusions Stage-Ⅰ MPCNL is an effective,quick-recovery and safe treatment for upper urinary calculi complicated with pyonephrosis,as long we stick to the indications and standard procedures for the operation.%目的 探讨Ⅰ期微创经皮肾镜取石术治疗结石性脓肾的安全性和疗效.方法 选择2012年1月至2013年6月经Ⅰ期微创经皮肾穿刺取石术(MPCNL)治疗结石性脓肾患者26例.其中输尿管上段结石8例,双侧肾结石5例,单侧肾结石13例.术前有患侧腰痛11例,发热5例,中段尿细菌培养阳性9例.结果 平均手术时间49.2±13.2min.一次取尽结石22例(80.8%),平均住院时间8.38±0.98d,肾盂尿细菌培养阳性6例,术后血细菌培养阳性1例.术后发热(>38℃)8例,最高达39.6℃,2例发热1次,4例发热1~3d,2例发热4 ~5d.结论 采取相应

  15. Application of localized ultrasound lithotripsy in the treatment of middle-ureteral calculi%超声定位碎石在输尿管中段结石治疗中的应用

    Institute of Scientific and Technical Information of China (English)

    黄春燕; 梁峭嵘; 刘照宏; 俞抒姝

    2012-01-01

    Objective To explore the value of ultrasonography in the diagnosis of middle-ureteral calculi and the application of ultrasound-guided extracorporeal shock wave lithotripsy (ESWL). Methods Three hundred and twenty-four patients of middle-ureteral calculi were treated by ultrasound-guided ESWL. The positioning accuracy and calculus breaking effect were analyzed, and the incidence of complications after calculus breaking was observed. Results The ultrasound diagnosis and ESWL were successfully performed in all the patients, with a success rate of 98.5% (319/324). Conclusion Ultrasound diagnosis and ultrasound localized ESWL is currently a preferred method for treating middle-ureteral calculi, which can be used to substitute most of the X-ray positioning lithotripsy and ureteroscopy calculus removing.%目的 探讨超声对输尿管中段结石诊断及超声引导下进行体外冲击波碎石的应用价值.方法 对324例超声诊断输尿管中段结石患者进行体外冲击波碎石治疗,并分析输尿管中段结石的超声诊断技巧、定位准确性及碎石效果,追踪观察碎石后并发症的发生.结果 本组患者均顺利完成输尿管结石超声显像及碎石治疗,98.5%获得较满意疗效.结论 超声诊断及定位体外冲击波碎石治疗输尿管中段结石是目前非手术治疗的首选方法,可替代绝大部份X光定位碎石及输尿管镜取石.

  16. ANALYSIS OF THE CURATIVE EFFECT OF URL AND ESWL ON URETERAL CALCULI TREAT OF THE OLD PATIENTS%URL与ESWL治疗老年输尿管结石的疗效分析

    Institute of Scientific and Technical Information of China (English)

    刘岩山

    2012-01-01

    [目的]探讨输尿管镜下气压弹道碎石(URL)和体外冲击波碎石(ESWL)治疗老年输尿管结石的疗效.[方法]回顾性分析2007年1月~2010年12月在某院分别采用URL与ESWL治疗的输尿管结石老年患者临床资料.[结果] URL组总成功率和中下段结石成功率明显高于ESWL组,差异有统计学意义(均P<0.01);上段结石成功率低于ESWL组,差异有统计学意义(P<0.05).URL组发热和肾绞痛均明显少于ESWL组,差异有统计学意义(均P<0.01);恶心呕吐、肉眼血尿和输尿管穿孔差异均无统计学意义(均P> 0.05).[结论]URL在微创性上更有优势,ESWL应作为老年输尿管上段结石的首选,URL应作为老年输尿管中下段结石的首选.%{Objective] To investigate the therapeutic effect of Ureteroscopic Iithotripsy (URL) and Extracorporeal Shock Wave Iithotripsy {ESWL) on the ureterai calculi in the old patients. [Methods] A retrospective analysis was carried out for the therapeutic effect of URL and ESWL treatment on ureterai calculi of elderly patients from January 2007 years to De* 0.0S). [Conclusion] Minimally invasive URL treatment has more advantages. ESWL should be the Crest choice with upper ureleral calculi, and URL should be the first choice for lower ureterai cal-cuili for the old patients.

  17. Outpatient emergency treatment by ESWL for ureteral calculi with renal colic%门诊急诊ESWL治疗输尿管结石伴肾绞痛疗效分析

    Institute of Scientific and Technical Information of China (English)

    吕金东; 汤元杰; 张丽; 李书铃; 陶淑芬

    2013-01-01

    目的 探讨门诊急诊ESWL治疗输尿管结石伴肾绞痛的治疗效果.方法 回顾性分析2010年1月~2012年4月门诊急诊ESWL治疗输尿管结石伴肾绞痛的体外冲击波治疗的效果.结果 经1次碎石后肾绞痛缓解者715例(89.4%),经1次治疗后结石排净者660例(82.5%),经2~5次治疗后结石排净者126例(15.8%),结石总排净率为98.3%.失败14例,失败者均转入外科行肾镜输尿管镜或手术治疗.结论 门诊急诊ESWL治疗输尿管结石伴肾绞痛效果满意,是治疗输尿管结石伴肾绞痛的首选治疗手段.%OBJECTIVE To investigate outpatient emergency treatment by extracorporeal shock wave lithotripsy (ESWL) for ureteral calculi with renal colic. METHODS A retrospective analysis was made on the effect of outpatient emergency treatment by ESWL for ureteral calculi with renal colic from January, 2010 to April, 2012. RESULTS After one time of ESWL, the o-dynolysis rate and lithecbole rate were 89.4% and 82.5% respectively. The lithecbole rate after 2-5 times of ESWL was 15.8%, and the total lithecbole rate was 98.3%. 14 cases were failed, and were transferred to urinary surgery to do examins by nephro-scope or ureteroscope surgical treatment or surgical operation. CONCLUSION Outpatient emergency treatment by ESWL for ureteral calculi with renal colic is very effective, and can be the first choice for the treatment of ureteral calculi with renal colic.

  18. Pneumatic lithotripsy through ureteroscope for treating ureteral calculi%输尿管镜气压弹道碎石术治疗输尿管结石

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    林飞鹤; 谢春发; 高海亮; 蔡伯基; 蔡道广

    2015-01-01

    Objective To evaluate the efficacy and safety of the pneumatic lithotripsy through ureteroscope for the treatment of ureteral calculi.Methods A total of 920 patients underwent ureteroscopic lithotripsy using pneu-matic lithotripsy 259 upper,375 middle,and 286 lower ureteral stone were treated.Results The overall successful fragmentation rate for all levels of ureteral stones in a single session achieved 94.0% (864 /920),failure rate 6.0%(56 /920).28 cases failed because of ureteral stricture.24 cases of stone moved up into the kidney.All worst -cases were in dewelled shock wave lithotripsy ESWL.Conclusion Ureteroscopic lithotripsy using pneumatic lithotripsy is a highly effective,minimally invasive and safe therapy for ureteral calculi.It is indicated as a first choice for treatment patients with ureteral stones,especially for the ones with the middle and lower uneteral stones.Develop particularly suitable for basic hospital.%目的:总结分析经尿道输尿管镜气压弹道碎石术治疗输尿管结石的疗效及其安全性。方法应用输尿管镜气压弹道碎石术治疗920例输尿管结石,其中输尿管上段结石259例,输尿管中段结石375例,输尿管下段结石286例。结果920例输尿管结石单次成功率94%(864/920),失败率6%(56/920)。失败原因:28例因输尿管口畸形狭窄而上镜失败,24例碎石过程中部分结石进入肾内,52例失败病例在留置双 J管条件下术后辅助冲击波体外碎石治疗。4例因既往有输尿管手术史或多次 ESWL 史,结石远端输尿管明显扭曲或狭窄,术中输尿管镜试图扩张通过而发生穿孔。结论输尿管镜气压弹道碎石术治疗输尿管结石有效,微创、安全、经济,是治疗输尿管结石特别是输尿管中、下段结石的首选治疗方法,特别适合在基层医院开展。

  19. Minimally invasive percutaneous nephrolithotomy with vacuum aspiration in the treatment of catastaghorn renal calculi%负压吸引式微创经皮肾镜取石术治疗鹿角形肾结石

    Institute of Scientific and Technical Information of China (English)

    杨忠圣; 宋乐明; 齐琳; 祖雄兵; 刘泰荣

    2011-01-01

    目的 探讨自行设计的负压吸引式微创经皮肾镜取石术治疗鹿角形肾结石临床疗效及其优点.方法 回顾性分析60例采用负压吸引式微创经皮肾镜取石术治疗鹿角形肾结石患者的临床资料.其中单侧55例,双侧5例;结石大小4.0~6.5 cm,平均5.0 cm;有肾脏手术史患者6例;合并尿路感染23例;肾功能不全8例.采用B超引导穿刺建立通道,应用自行设计的经皮肾微造瘘吸引碎石清石鞘(已获国家专利),接负压吸引,肾镜下应用钬激光或者气压弹道碎石.对手术时间、手术并发症及清石率等进行分析.结果 60例患者均一期成功穿刺建立经皮肾通道,2例因为建立通道时有明显出血,行二期取石.手术时间120~260 min,平均180min.术中出血50~300mL,平均100mL,均未输血;术后3例继发出血,输血200~800mL,1例患者行肾动脉分支介入栓塞治疗.52例患者一次取净结石;5例患者再次手术取石,4例取净;3例患者(2例为第1次术后,1例为第2次术后)术后配合体外冲击波碎石(ESWL)治疗,1例排净;3例患者有残石.5例患者术后出现发热.所有患者中没有出现腹腔脏器损伤、气胸、休克等严重并发症.结论 负压吸引式微创经皮肾镜取石术具有创伤小、手术时间短、结石清除率高及并发症少等优点,是治疗鹿角形结石的一种重要选择.%[Objective] To evaluate the clinical effects and advantages of minimally invasive percutaneous nephrolithotomy with vacuum aspiration (VMPCNL) in the treatment of cata-staghorn renal calculi. [Methods] The clinical data of 60 cases (43 males and 17 females) treated by VMPCNL were retrospectively analyzed. There were mono-renal calculi in 55 patients, while the other 5 combined opposite side renal calculi. The diameter of calculi ranged from 4.0 to 6.5 (mean =5.0) cm. There were 6 patients with a history of renal surgery, 23 patients with combined urinary tract infection, and

  20. 超声引导微创经皮肾镜治疗输尿管上段结石的应用%Ultrasound-guided minimally invasive percutaneous nephrolithotomy in the treatment of upper ureteral calculi

    Institute of Scientific and Technical Information of China (English)

    刘应清; 陶凌松; 陈弋生; 邹滨; 孔艰; 刘卫平; 江雪峰

    2011-01-01

    Aim To investigate the clinical application value and method of ultrasound-guided minimally invasive percutaneous nephro-lithotomy(MPCNL)in the treatment of upper ureteral calculi.Methods Twenty-one patients with upper ureteral calculi received mini-really invasive percutaneous renal puncture and ureteroscopic lithotripsy under the guidance of ultrasound.Twelve male,9 female,Mean patient age was 45.6 years(18~57 years).The calculi located in the left upper ureter were 11 cases,10 in the right.Combined with ip-silateral renal calculus were in 8 cases,one patient associated with ureteral stricture,intermediate hydrops in 9 cases,severe hydrops in 6 cases.Mean stone size was 16 mm(10~30 mm)in diameter.Results All the patients were punctured successfully at one prick and twenty patients with upper ureteral calculi were removed out through single passage in phrase I.Operative duration was 60~150 min.The total stone clearance rate was 95.2%.Residual stone fragment was found in 1 patient.Then discharged one week later after pull out D-J tube.No serious complications occurred in the operation.Conclusion Ultrasound-guided minimally invasive percutaneous nephrolithoto-my is a safe and effective technique for the treatment of upper ureteral calculi or associated with ipsilateral renal calculus or ureteral stric-ture with the advantages of little trauma and rapid recovery.Meanwhile,ipsilateral renal calculus and ureteral stricture can also be trea-ted effectively.%目的 探讨微创经皮肾镜取石术(MPCNL)治疗输尿管上段结石的方法及效果.方法在超声引导下对21例输尿管上段结石患者行经皮肾穿刺建立碎石微通道,经通道于输尿管镜下行碎石取石术.其中男性12例,女性9例,年龄18~57岁,平均年龄45.6岁.左侧输尿管上段结石11例,右侧10例.8例合并同侧肾脏结石.1例合并输尿管狭窄,肾脏中度积水15例,重度积水6例.结石1.0~3.0 cm大小不等.结果21例均成功建立经皮肾镜

  1. 多点穿刺标准通道经皮肾镜治疗鹿角形结石的体会%Multi-point puncture standard channels in percutaneous nephrolithotomy treatment of staghorn calculi

    Institute of Scientific and Technical Information of China (English)

    徐学军; 王磊; 尹海军; 高景宇; 魏洪亮; 罗子靖

    2015-01-01

    目的:探讨多点穿刺标准通道术在双导管碎石清石系统治疗鹿角形肾结石中的价值。方法分析268例鹿角形肾结石患者的临床资料,男性148例,女性120例,年龄18~68岁。合并集合系统积水(包括某一肾盏的扩张)186例,积脓26例。均使用标准通道多点穿刺技术双导管碎石清石系统治疗。全麻或硬膜外(分2次手术者)麻醉。彩色多普勒超声引导下建立标准通道,手术中 B 超实时监测下选择和使用肾盂和肾盏穿刺点。结果268例共建立标准通道270个,选择和使用穿刺点486个,使用4个19例,3个27例,2个107例,1个115例。平均取石时间45.4 min。一期清石率96.7%(259/268),二期清石率98.9%(265/268)。输血 9例(3.4%)。介入治疗4例(1.5%),术后发热26例(9.7%)。无死亡病例,无肾切除病例。结论彩色多普勒超声实时监测下,使用标准通道多点穿刺技术,在双导管碎石清石系统对鹿角形肾结石的治疗中安全、快速,能够提高清石率,降低手术并发症。%Objective To evaluate the feasibility and efficacy of the dual ultrasonic lithotriptor system combined with multi-point puncture standard channels technique in patients with renal staghorn calculi.Methods Analysis was made in 268 renal staghorn calculi patients, males 148,females 120,average age 18- 68 years old.Coupled with water collection systems (including the expansion of a kidney)accounted for 186 cases,pyometra amounted to 26 cases.All the patients were treated with dual ultrasonic lithotriptor system combined with multi-point puncture standard channels technique.General anesthesia or peridural anesthesia(in the two stage procedure)was applied.The standard channels,the punctures of renal pelvis and calyces were created under the color Doppler ultrasound guide.Results A total of 270 standard channels,486 point punctures of renal pelvis and

  2. 钬激光碎石术在复杂性输尿管结石的临床应用%Holmium Laser Lithotripsy in the Complexity of the Clinical Application of Ureteral Calculi

    Institute of Scientific and Technical Information of China (English)

    钱建荣; 陈毅来; 邓小虎; 黄辉健

    2012-01-01

      Objective to study the therapeutic effect and safety of Holmium laser on the endoscopic treatment of ureteral calculi. Methods in 67 cases with ureteroscopic holmium: YaG laser lithotripsy of ureteral calculi pa-tients were retrospectively analyzed. 39 cases were male, 28 were female; aged 28 ~ 65 years, average 37 years old. Upper ureteral calculi in 32 cases, in the middle of calculus in 11 cases, stones in the lower segment in 24 cases. in 1 cases the stones in the holmium: YaG laser lithotripsy in renal calices during shift, after treated by esWl one case experienced open operation because of Ureteral stricture.Results 97.01%(65/67)stones were fragmented in one treatment session. Conclusion the ureteroscopy holmium laser lithotripsy for complex ureter stone safe and effective.%  目的探讨经输尿管镜下实施钬激光治疗复杂性输尿管结石的有效性和安全性.方法对67例进行输尿管镜下钬激光碎石的输尿管结石患者资料进行回顾性分析.其中男39例,女28例;年龄28~65岁,平均37岁.输尿管上段结石32例,中段结石11例,下段结石24例.结果全部患者中有65例通过一次钬激光碎石术成功碎石,成功率达97.01%,1例患者出现术中结石移位,于碎石术后进行 esWl 治疗;1例结石患者输尿管狭窄无法入镜,中转开放手术.结论在复杂性输尿管结石治疗采用经输尿管镜钬激光碎石术是安全有效的治疗方法.

  3. 妊娠期输尿管结石并发顽固性肾绞痛的微创治疗%Minimally invasive treatment of ureteral calculi with period of refractory renal colic during pregnancy

    Institute of Scientific and Technical Information of China (English)

    卢文武; 张建育; 刘榕臻; 李毅宁; 王明镑; 洪传芳

    2014-01-01

    Objective To evaluate the safety and efifcacy of treatment of refractory renal colic due to ureteric calculi during pregnancy. Methods In our hospital in September 2009 to June 2014, clinical data of 18 pregnant women with refractory renal colic due to ureteric calculi in my hospital were collected and retrospectively analyzed.13 cases received intra-ureteral double-J cannula alone. 5 cases received intra-ureteral double-J cannula after ureteroscopic pneumatic lithotripsy. Results Renal colic was relieved in 18 cases after operation. All the pregnant women had normal delivery and gave birth to healthy babies. Conclusion For pregnant women with refractory renal colic due to ureteric calculi, intra-ureteral cannula alone and intra-ureteral double-J cannula after ureteroscopic pneumatic lithotripsy treatment are safe and effective.%目的:探讨妊娠期输尿管结石并发顽固性肾绞痛的微创治疗的安全性及疗效。方法对我院2009年9月~2014年6月,共18例妊娠期输尿管结石并发顽固性肾绞痛的患者,进行回顾性分析。13例患者采用输尿管置管术,5例患者采用输尿管镜气压弹道碎石+输尿管置管术治疗。结果18例患者肾绞痛都得到有效缓解,均顺利生产,婴儿健康。结论对妊娠期输尿管结石并发顽固性肾绞痛患者采用输尿管置管术、输尿管镜气压弹道碎石+输尿管置管术等微创外科治疗技术,是安全有效的。

  4. Minimally Invasive Operation Skills for Chewing Gum-Like Urinary Matrix Calculi%泌尿系口香糖样软结石微创手术技巧

    Institute of Scientific and Technical Information of China (English)

    赵春利; 张晶; 杨文增; 古德强; 张彦桥; 李昱

    2011-01-01

    Objective To summarize the minimally invasive operation skills of chewing gum - like urinary matrix calculi. Methods Data of 11 patients ( 5 males and 6 females ) with chewing gum - like urinary matrix calculi admitted to our hospital from Jan 2005 to May 2011 were retrospectively analyzed. Of these patients , 10 were with urinary infections ( all identified by urine culture as Escherichia Coli ) , 6 were with diabetes. All the patients underwent minimally invasive percutaneous nephrolithotomy ( MPCNL ) . Results ALL the operations were successfully performed without open operation transfer. Operation time ranged from 45 to 120 minutes, with an average of ( 64.3 ± 6.9 ) minutes. Severe complications were not noted during and after the operation. No relapse cases were observed during the 6 months of follow - up. Conclusion MPCNL is safe and effective in treatment of chewing gum - like matrix calculi.%目的 总结微创手术治疗泌尿系口香糖样软结石的手术技巧.方法 回顾性分析2005年1月-2011年4月我院收治的泌尿系口香糖样软结石患者11例,其中男5例,女6例,10例患有泌尿系感染,尿培养均为大肠埃希菌,6例患有糖尿病.11例患者均采用经皮肾镜取石术(PCNL)微创治疗.结果 11例患者均一期完成手术,无改开放手术,手术时间为45~120 min,平均(64.3±6.9)min,术中术后均无明显并发症发生,随访6个月无结石复发者.结论 微创手术治疗泌尿系口香糖样软结石安全有效.

  5. Multi-stage Multi-Channel Percutaneous Nephrolithotomy Treatment Complete Staghorn Calculi%多期多通道经皮肾镜取石术治疗完全性鹿角形结石

    Institute of Scientific and Technical Information of China (English)

    段建军; 燕东亮; 王彭; 张建军

    2015-01-01

    目的 研究多期多通道经皮肾镜取石术( PNL )治疗完全性鹿角形结石的安全性及有效性. 方法 回顾性分析了本院2012年3月至2014年9月接受PNL治疗的完全性鹿角形肾结石患者的临床资料,共35例,双侧鹿角形结石5例,单侧30例,鹿角形结石共40枚. 结果 40枚完全性鹿角形结石共穿刺126条通道,平均3 .15条/枚. 共行PNL术85期,平均2 .1期/枚. 手术时间76~260分钟,平均(96.2 ±14.5)分钟. 结石清除率87.5%. 输血2例,胸膜损伤1例,无其他严重并发症. 术后平均住院时间(7.8+1.21)天. 结论 多期多通道经皮肾镜取石术治疗鹿角形结石安全可行,疗效确切,具有创伤小、恢复快、可反复操作等优点.%Objective To assess the safety and the curative effect of treatment with multi-stage multi -channel percutaneous nephrolithotomy (PNL) in complete staghorn calculi.Methods Retrospective analysis in Mar 2012 to Sep 2014 by the method of treatment 35 patients with complete staghorn calculi ,of whom five had bilateral stones.Results 40 stones were built 126 tracts, the average being 3.15.85 stages were performed, the average being 2.1.The mean ( ±SD) operating time was (96.2 ±24.9) minutes, the stone-free rate was 87.5%, blood transfusions 2, membrane hazard 1, no other complications.Mean ( ±SD) postoperative hospital stay was (7.8+1.21) days.Conclusions Multi-stage multi-channel percutaneous nephrolithotomy treatment complete staghorn calculi is safe and effective .It may offer advantages with respect to less intraoperative and postoperative complications, less invasion and easy recovery.

  6. Color doppler ultrasound guided percutaneous nephrolithotomy for treatment of renal calculi in non-dilated collecting system%彩超引导下经皮肾镜碎石术治疗不积水肾结石

    Institute of Scientific and Technical Information of China (English)

    李方; 徐友明; 刘进; 陈侃; 王书龙; 陈久顺; 吴中华; 王邵亮; 余建华

    2012-01-01

    目的:探讨彩超引导下经皮肾镜术治疗不积水肾结石的应用价值,总结技术要点.方法:55例不积水肾结石患者,在彩超引导下建立标准经皮肾通道,采用EMS第四代碎石清石系统清除结石.结果:全部患者均成功建立通道,一期完成手术,一期结石清除率90.9%(50/55),2例残石较多者行二期PCNL,3例术后ESWL治疗.所有患者均未输血以及介入栓塞治疗.结论:彩超引导下行经皮肾镜术治疗不积水肾结石,可以有效降低术中、术后严重出血,安全可靠.%Objective: To evaluate the clinic application value of color doppler ultrasound-guided percutaneous nephrolithotomy for treatment of renal calculi in non-dilated collecting system, and summarize the main points of colour doppler ultrasound-guided technology. Method: Fifty-five cases of renal calculi in non-dilated collecting system were performed by percutaneous nephrolithotripsy. The standard renal channel was estabilished under the guidance of colour doppler ultrasound. Result:Percutaneous renal access was successfully established and immediate phase I Lithotripsy was performed in all patients. Stones were cleared in 50 out of 55 cases(90. 9%)during immediate phase I lithotripsy. 2cases with some residual stone fragments received second PCNL, others (3 cases)received extracorporeal shock wave lithotripsy. No patient received blood transfusion or interventional embolization. Conclusion: Color ultrasound guided percutaneous nephrolithotomy is an effective and safe treatment for renal calculi in non-dilated collecting.system. This technology can effectively reduce heavy blood loss during and after operation.

  7. 后腹腔镜与输尿管镜治疗输尿管上段结石的比较研究%Comparative Study of Retroperitoneoscopy and Ureteroscope in the Treatment of Upper Ureteral Calculi

    Institute of Scientific and Technical Information of China (English)

    黄广龙; 梁华良; 黄伙; 陆荣森; 梁多

    2014-01-01

    目的:比较分析后腹腔镜与输尿管镜治疗输尿管上段结石的临床效果。方法:采用随机数字表法选取100例采用输尿管镜治疗输尿管上段结石的患者作为对照组,选取86例采用后腹腔镜治疗输尿管上段结石的患者作为试验组,比较两组患者取石成功率、结石滑入肾内无法取出率及术后结石残余率情况。结果:试验组取石成功率(100%)明显高于对照组(75.00%),试验组结石滑入肾内无法取出率(0)和术后结石残余率(0)都明显低于对照组结石滑入肾内无法取出率(15.00%)和术后结石残余率(10.00%),试验组结石一次性清除率(100%)明显高于对照组结石一次性清除率(75.00%),差异有统计学意义(P<0.05)。结论:采用后腹腔镜的方法相较于输尿管镜技术治疗输尿管上段结石,取石成功率高,无结石滑入肾内无法取出,术后无结石残留,结石清除更彻底,安全,可靠,输尿管上段结石在输尿管镜上镜困难或结石较大时采用后腹腔镜取石更具优势。%Objective:To compare and analyze the clinical effects of retroperitoneoscopy and ureteroscope in the treatment of upper ureteral calculi. Method:100 cases with upper ureteral calculi treated by ureteroscope were selected as the control group,and another 86 patients treated by retroperitoneoscopy were selected as the experimental group,by method of random number table,calculus successfully removed rate,rate of calculus slidding into kidney which couldn’t remove,residual ratio of calculus after operation of two groups were compared.Result:The successful calculus removal rate of experimental group(100%) was significantly higher than control group(75.00%) after observation,rate of calculus slidding into kidney which couldn’t remove and residual calculus of experimental group(0,0) were significantly lower than control group(15.00%,10.00%),and disposable clearance rate of experimental group(100

  8. Ureteroscope pneumatic lithotripsy for 204 cases of ureteral calculi%输尿管镜气压弹道碎石术治疗输尿管结石204例效果观察及治疗策略

    Institute of Scientific and Technical Information of China (English)

    张力; 胡兴平; 王凯

    2012-01-01

    Objective To investigate the effect of ureteroscope pneumatic lithotripsy for ureteral calculi. Methods Pneumatic lithotripsy under ureteroscopy was used to treat 204 cases of ureteral calculi, including 16 cases (8% ) in middle ureter and 188 cases (92% ) in lower ureter, in which 6 cases were in the wall of urinary bladder. Results The operation time varied from 15 to 116 min (45 min on average). The success rate of ureteroscope pneumatic lithotripsy was 98.0% (200 cases). The intraoperative stone free rate was 96. 6%. Stones in 2 cases transferred to kidney. Thus the surgery ended in failure. Some stones in 3 cases transferred to kidney after ureteroscope pneumatic lithotripsy (diameterIS3 mm). Stones in 1 case were exceptionally hard which could not be shattered by pneumatic lithotripsy probe and transferred to surgery. In another case, due to severe local mucosal edema with hemorrhage caused by swelling in the opening of the wall of urinary bladder, we could not find the front opening of ureter and insert a guide wire into it. This case was then cured by both surgery and ureteroscope pneumatic lithotripsy. Postoperative hematuria was observed by naked eye or microscope in all the cases, and disappeared 2-3 days after operation. No complications such as perforation and infection were found in any cases. Conclusions Ureteroscope pneumatic lithotripsy for ureteral calculi is effective, safe, with small damage of tissue, fewer complications, which can be used as the top choice for ureteral calculi in middle and lower ureter.%目的 观察输尿管镜气压弹道碎石术治疗输尿管结石的效果.方法 应用输尿管镜下气压弹道碎石治疗输尿管结石204例,其中输尿管中段结石16例(占8%),输尿管下段结石188例(占92%),膀胱壁内段结石6例.结果 204例手术时间15 ~116分钟,平均45分钟;碎石成功率98.0%(200例),术中结石排净率96.6%,2例结石漂移至肾脏,未能完成手术;3例碎石后,

  9. 临床路径模式与传统模式治疗输尿管结石的比较%Comparison and Analysis of Clinical Path Mode with the Traditional Mode of Treatment of Ureteral Calculi

    Institute of Scientific and Technical Information of China (English)

    马伟国; 金素慧; 马丽丽; 方睿; 张桐语

    2014-01-01

    目的:引用不同参数比较输尿管结石实施临床路径模式与传统治疗模式的不同及原因分析。方法164例输尿管结石分四组:A组为临床路径治疗单纯结石,B组为临床路径治疗结石合并其他疾病,C组为传统模式治疗单纯结石,D组为传统模式治疗结石合并其他疾病。全部病例均在各类麻醉下使用输尿管硬镜弹道碎石术。A组56例,B组30例,C组46例, D组32例。采用统计学方法从术前平均住院日、平均住院日、住院总费用、药占比、抗生素比、患者满意度调查等各参数进行比较。结果 A组各指标均优于B、C、D三组,差异有统计学意义(P<0.05);B组各指标与C组持平(P>0.05);B、C两组各指标均优于D组,差异有统计学意义(P<0.05)。结论无合并其他疾病的单纯输尿管中下段结石实施临床路径模式治疗效果较好,总体疗效满意,临床路径模式还需进一步完善。%Objective To compare the differences of ureteral calculus between Implementation of clinical pathway and Traditional treatment mode by different parameter. Methods 164 cases of ureteral stones were divided into four groups:group A is the clinical path treatment of simple calculi, group B is clinical path treatment of calculi with other diseases, group C is the traditional mode of treatment of simple calculi, group D is the traditional mode of treatment of calculi complicated with other diseases. All patients were using ureteroscopic lithotripsy in all kinds of anesthesia. 56 cases in group A, 30 cases in group B, 46 cases in group C, group D of 32 cases. The preoperative waiting to bed days, average hospitalization days, total cost of hospitalization, drug for each parameter ratio, antibiotics, patients satisfaction survey are compared. Results In group A, the indicators are better than group B, C, D, the difference was statistically significant (P0.05);indicators of B, C groups are

  10. 经皮肾镜气压弹道联合超声碎石术治疗感染性肾结石%Percutaneous Nephrolithotomy for Infection-induced Renal Calculi

    Institute of Scientific and Technical Information of China (English)

    曹赟杰; 宋广来; 徐仁芳; 许贤林; 何小舟

    2011-01-01

    Objective To investigate the skills and efficacy of percutaneous nephrolithotomy (PCNL) for infection-induced renal calculi. Methods From September 2007 to April 2010, 27 patients with infection-induced renal calculi received PCNL after anti-infection therapy. After the renal calyx was punctured under ultrasound guidance, F24 standard renal access tract was established when the tract was dilated. EMS Ⅲ LithoClast Master was then employed to remove the stones. Ultrasonic powered lithotriptor probe with suction was used to clear the liquor pus, and the stones were fragmented and cleared by pneumatic combined with ultrasonic lithotriptor. Results Stone clearance was achieved in a single session in 22 cases; 3 patients received a second PNCL because of residual stones > 1 cm in diameter, and 2 patients underwent ESWL due to residual calculi < 1 cm. No patients showed massive hemorrhage, perinephric abscesss or injury to the adjacent organs during and after the operation. Three patients developed systemic inflammatory response syndrome after the surgery, and one patient showed renal arteriovenous fistula, all of them were cured afterwards. In one month postoperation, serum examination showed decreased level of creatinine by 76 μ mol/L in 8 patients who had renal insufficiency. Conclusion By using PCNL combined with EMS Ⅲ LithoClast Master to clear liquid pus before removing stones is a safe and effective method for infection-induced renal calculi.%目的 探讨经皮肾镜气压弹道联合超声碎石术治疗感染性肾结石的方法和疗效.方法 2007年9月~2010年4月,27例感染性肾结石患者术前抗感染治疗后,在B超定位及引导下穿刺,用筋膜扩张器、金属扩张器扩张,置入F的肾镜鞘.采用EMS第三代超声气压弹道碎石清石系统,先用超声吸附装置清理脓液、脓栓及附壁脓苔,并在低压或无压力的状况下超声碎石后吸出脓液,再行超声联合弹道碎石和清石.结果 22

  11. 结合输尿管软硬镜钬激光技术治疗输尿管上段结石%Ureteral soft mirror and hard microscopically holmium laser lithotripsy in the treatment of upper ureteral calculi

    Institute of Scientific and Technical Information of China (English)

    窦坤; 刘齐贵; 周庆余; 赵谦

    2013-01-01

    Objectives Discuss with ureteral soft hard mirror on the effectiveness of the treatment of upper ureteral calculi.Methods Through the ureteral soft and hard mirror arrive at the ureteral calculus section,through the holmium laser lithotripsy,achieve gravel and qing stone,remove the purpose of ureteral obstruction.Results 386 patients by small ureteroscopy (F4.5) a gravel success rate was 71%.Combined with ureteral soft mirror treatment a gravel success rate was 98.4%.Conclusions Ureteral soft and hard mirror on the treatment of upper ureteral calculi with high success rate,safe and effective.%目的 探讨输尿管软硬镜结合治疗输尿管上段结石的临床效果.方法 结合应用输尿管软、硬镜到达输尿管上段目标结石,通过钬激光碎石,达到碎石、清石,解除输尿管梗阻的目的.结果 386例患者经小口径输尿管硬镜(F4.5)一次碎石成功率达71%(274/386),结合输尿管软镜治疗后一次碎石成功率达98.4%.结论 输尿管软、硬镜结合治疗输尿管上段结石成功率高、安全、有效.

  12. Management of ureteric calculi by ballistic lithotripsy%输尿管镜气压弹道碎石术治疗输尿管结石的临床分析

    Institute of Scientific and Technical Information of China (English)

    赵福军; 李虹; 唐秀泉

    2001-01-01

    Objective: To evaluate the clinical use of ballistic lithotriptorin the endoscopic management of ureteric calculi. Methods: Between Feb 2000 to Aug 2000, a total of 28 patients with ureteric calculi, including upper third ureteric stones, middle and lower ureteric stones, were treated with the ballistic lithotriptor. Results: Satisfactory fragmentation was obtained in 24 of the 28 stones (85.7%) and failed fragmentation, in 4(14.3%) in two of which stones were pushed up into pelvis and adjunctive ESWL was performed and in one of which ureteric perforation was emerged and it underwent open surgery and in another case of which the ureterorenoscope failed to be inserted in ureterostoma. Conclusion: The ballistic lithoclast, as a new technique, is claimed to be safe and a high success rate and less trauma, which is valuable to be greatly spread.%目的:探讨输尿管镜气压弹道碎石术治疗输尿管结石的临床疗效。方法:应用输尿管镜气压弹道碎石术治疗输尿管结石28例。结果:26例中、下段输尿管结石中24例获得成功,2例失败。2例上段输尿管结石,因推入肾盂内改行ESWL。结论;输尿管镜气压弹道碎石术作为一种新兴技术,具有碎石时间短、效果明显、工作时不产生热、不易损伤组织、手术并发症少等优点,是很值得推广的。

  13. [Complex therapy of cystine calculi].

    Science.gov (United States)

    Hamvas, A; Berényi, M; Frang, D

    1993-11-14

    Authors report their experiences with management of cystine urolithiasis between 1975-1992. 61 patients were observed and treated with dietotherapy, medicaments, open surgery, percutaneous nephrolithotomy and extracorporeal shock wave lithotripsy. Difficulties of treatment of this rare stone have been demonstrated with data of 3 patients (lack of screening and early diagnosis, unsystematic prophylaxis, formation of large stones). PMID:8233469

  14. 109例胆道结石超声与MRI诊断的对照研究%A comparative study of diagnosis of MRI and ultrasonography in 109 cases of biliary calculi

    Institute of Scientific and Technical Information of China (English)

    邱俊; 裴仁明; 陶振超; 马小苏

    2014-01-01

    Objective To compare the diagnostic value of ultrasonography and magnetic resonance imaging (MRI)in showing bili-ary calculi.Methods Totally 109 cases of biliary calculi were examined with magnetic resonance imaging(MRI)and ultrasonography before surgery.Final diagnosis was confirmed by surgery.The sensitivity,specificity and accuracy of MRI and US were analyzed.Results Among the 109 patients with biliary calculi,24 patients had cholecystolithiasis,32 patients had common duct stones,7 patients had calculi US of in-trahepatic duct,and there existed two or more sites of stones in 46 patients.The sensitivity,specificity and accuracy of MRI and US in detec-ting cholecystolithiasis were 87.63%,99.17%,92.98%,and 94.01%,95.09%,94.73%,respectively;the sensitivity,specificity and accu-racy of MRI and US in detecting common duct stones were 92.67%,97.33%,94.52%,and 76.44%,77.86%,76.71%,respectively;the sensitivity,specificity and accuracy of US and MRI in detecting calculi US of intrahepatic duct were 73.42%,84.82%,85.71%,and 75.31%,75.91%,75.00%,respectively.Conclusion US,used as a primary screening tool,can improve the diagnostic rate of cholecystoli-thiasis,which must be combined with MRI.In the imaging sequence of MRI and MRCP,the observation combined with T2WI,FIESTA-coronal and MRCP-original image is superior.%目的:比较超声与磁共振成像(MRI)各成像序列对胆道结石的诊断价值。方法根据本院情况,抽取109例单纯胆道结石病例的术前超声与MRI资料。比较两种检查方法诊断胆道结石的准确率、灵敏度和特异度。结果109例胆道系统结石病例中,术中所见24例为胆囊结石,32例为胆总管结石,7例为肝内胆管结石,46例有两个部位以上的结石同时存在。MRI和超声诊断胆囊结石的灵敏度、特异度和准确率分别为87.63%、99.17%、92.98%,94.01%、95.09%和94.73%;MRI和超声诊断胆总管结石的灵敏度、特

  15. Observation of the Therapeutic Effect of Tamsulosin on Assisted Expulsion for Treating Lower Ureteral Calculi%坦索罗辛在输尿管下段结石辅助排石中的疗效观察

    Institute of Scientific and Technical Information of China (English)

    洪辉斌; 王乐浩; 王博智; 姚伟

    2012-01-01

    Objective: To evaluate the efficacy of tamsulosin in treatment of lower ureteral calculi. Method: A total of 90 consecutive patients with single radiopaque lower ureteral calculi were enrolled in the study. The stone diameter was 0. 4 — 1. 0cm and patients were 21-72 years. All patients were diveded into two groups! 45 cases in each group ). The control group were treated with lavoofloxacin ( 0. 2g bid ) and chi-nese medicine Paishi Decoction ( ldose qd ). The tamsulosin group received the same medicines in the control group plus tamsulosin( 0. 2mg qd ). There's no significant differences in concerning age, gender distribution and maximum stone diameter of two groups. All patients were treated for 10 days and followed up for 15 days. Efficacy was evaluated in term of stone expulsion rate, expulsion time, pain episodes, analgesic use and adverse drug reaction during a week of follow up. Result:The successful stone expulsion rate was 86. 7%( 39/45 ) in the tamsulosin group, which was significantly higher than 57. 8% in the control group ( P< 0. 01 ). Mean expulsive calculi time of the control group and the tamsulosin group were 7. 51 ±2. 34 days,5. 02±1.27 days respectively. There was statistically significant difference ( P<0.05 ). The pain episodes rate and analgesic use rate were 17.8% ( 8/45 ) and 6. 7%( 3/45 ) in the tamsulosin group, which were also significantly lower than those in the control group, which were 42.2%( 19/45 ) and 28.9%( 13/45 ), respectively ( P<0. 05 ). All the patients could tolerate the expulsive calculi therapy and no obvious side effects were found. Conclusion:Tamsulosin can be useful to shorten the duration of the expelling stone, relieves renal colic episode and significantly improve the expulsive calculi rate in the lower ureter. Tamsulosin in the treatment of lower ureteral stones ( 0. 4-1. 0cm in diameter ) is safe.%目的:评价坦索罗辛在输尿管下段结石辅助排石中的临床效果.方法:选取90例确诊单纯输

  16. Percutaneons nephrolithotomy for calculi in solitary kidney: challenge and risk%孤立肾肾结石经皮肾镜取石术安全性分析

    Institute of Scientific and Technical Information of China (English)

    李建兴; 胡卫国; 杨波; 陈亮; 马凯; 黄晓波; 王晓峰

    2009-01-01

    Objective To evaluate the efficacy and safety of standard percutaneous nephrolithot- omy(PCNL)in the treatment of calculi in solitary kidney. Methods One hundred and fifty-six pa- tients of renal calculi with functional or anatomic solitary kidney had undergone PCNL accessed by two steps dilation to 24 F tract with ultrasound guidance from Aug 2003 to Oct 2008.Fifty-seven cases were with staghorn calculi,83 were with multiple calculi,16 were with single stone.There were 71 cases with abnormal renal function and 11with open nephrolithotomy history.All calculi were frag- mented and extracted by pneumatic and ultrasound lithotripter. Results The percutaneous renal ac- cess was successfully established in 1 56 patients under ultrasound guidance and immediate lithotripsy was performed.The calculi of 143(91.7%)patients were cleared by single access,9(5.8%)by double accesses,1 by triple accesses in one session and 3 by multiple accesses in multiple-session pro- cedures.The mean operating time was(46.7±11.2)min,the mean first accessing time was(4.5± 0.8)min.The stone-free rate after the first operation was 74.4%.There were 2 1 kidnevs accepted another PCNL to remove the residual calculi.The stone-free rate of this group was 87.8%.Five cases (3.2%)needed transfusion,4(2.6%)underwent hyperseleetive angioembolization for bleeding con- trol.No injury of adjacent organs or urosepsis happened.The plasma creatinine decreased after opera- tion in 81.7%of patients with pre-operative abnormal renal function.and no patient needed replace- ment therapy for deteriorated renal function. Conclusion Standard PCNL for calCUIus in solitary kidnev accessed by two steps dilation to 24 F tract with uhrasound-guided punCture is safe and effective.%目的 探讨孤立肾肾结石经皮肾镜取石术(PCNL)的安全性及临床疗效.方法 孤立肾合并肾结石患者156例,其中解剖性孤立肾35例,功能性孤立肾121例(对侧肾GFR<10ml

  17. Retroperitoneal laparoscopic ureterolithotomy for complex upper ureteral calculi%后腹腔镜输尿管切开取石术治疗复杂性输尿管上段结石

    Institute of Scientific and Technical Information of China (English)

    欧平; 邓晓洪; 郑军; 王元中; 陈高亮

    2014-01-01

    Objective To evaluate the efficacy and surgical techniques of retroperitoneal laparoscopic uret-erolithotomy(RLU) in the trectment of complex upper ureteral calculi .Methods The clinical data of 33 cases(21 males and 12 females) of complex upper ureteral calculi patients who underwent RLU ,from March 2009 to August 2013 ,were retrospectively analyzed .Results All the 33 cases underwent RLU successfully .Operative time ranged from 60 to 150 min(mean ,90 .6 min) .The average volume of surgical blood loss was 32 mL ,ranged from 22 to 52 mL .During the operations ,we dealed with 15 cases of ureteral calculi complicated by ureteric polyps simultaneously . No serious complications were encountered .B ultrasound after 3 months of operation showed the hydronephrosis dis-appeared or observably reduced compared with the preoperative status .During the period followed 3-27 months ,ure-teral stricture or recurrent calculus had not been found .Conclusion RLU is safe ,effective and minimally invasive procedure .It may be considered as the first-choice treatment for patients with complex upper ureteral stones or the other experienced unsuccessful minimally invasive treatments .It can replace the conventional open surgery .%目的:探讨后腹腔镜输尿管切开取石术(RL U )治疗复杂性输尿管上段结石的疗效和手术技巧。方法回顾性分析2009年3月至2013年8月术前确诊为复杂性输尿管上段结石并行RL U治疗的33例患者的临床资料,其中男21例,女12例,平均年龄43岁,结石停留时间均大于8周。结果33例手术均获得成功,手术时间60~150 min ,平均90.6 min ,术中出血量约22~52 mL ,平均32 mL。15例术中发现合并输尿管息肉,同时进行处理。无严重并发症发生。术后3个月复查B超示患者肾积水消失或较术前明显减轻。所有患者均获得随访,随访3~27个月,无结石复发和输尿管狭窄等并发症发生。结论 RL U手术安全有

  18. 输尿管封堵器在输尿管镜中上段取石术中的应用%Application of Ureteral Occlusion Devices in Ureteroscopic Holium Laser Lithotripsy for Treatment of Upper Ureteral Calculi

    Institute of Scientific and Technical Information of China (English)

    龙宇; 李炯明; 陈戬; 刘建和; 闫永吉; 姜永明

    2012-01-01

    目的 探讨输尿管封堵器在输尿管镜钬激光碎石治疗输尿管中上段结石中的应用.方法 2010年10月至2011年10月,采用输尿管镜下置入英诺伟(TMIVX-SC10)输尿管封堵器封堵结石后钬激光碎石治疗输尿管中上段结石78例,其中上段41例,中段37例.结石直径为10~24mm.结果 成功封堵的71例(91%) URS手术,一次性彻底击碎结石.未有效封堵的7例手术中,2例辅助ESWL手术.手术时间为32~66 min,平均46min;术后2~7 d出院,平均3.3 d;术中无明显输尿管损伤及明显出血等严重并发症.结论 输尿管封堵器下进行的URS手术,可有效缩短手术时间及术后住院时间,有利于结石的完全粉碎,提高结石排净率,最大程度减少其它辅助治疗,是一种值得普及和推广的方法.%Objective To evaluate the efficacy and safety of ureteral occlusion devices used in ureteroscopic holium laser lithotripsy for treatment of upper-middle ureteral calculi. Methods From October 2010 to October 2011, a total of 78 patients with upper-middle ureteral calculi, 41 upper ureteral calculus and 37 middle ureteral lacalus, were treated with holium laser lithotripsy via a F8/9.8 ureteroscope, combined with a INNOVEX IVX- SC10 ureteral occlusion device. The diameters of ureteral calculi were 10~24 mm. Results All operations were successfully performed without obvious ureteral injury and serious bleeding. 71 (91%) cases were successfully occluded with stones being completely crushed once. 7 cases were not effectively occluded, two of which were treated with ESWL. Mean Operative time was 46 min (32~66min). Mean postoperative hospital stay was 3.3 days C2~7 days) . Conclusions The newureteral occlusion device is worthy of popularization and promotion in favor of shortening operative time and postoperative hospital stay, increasing stone- free rate, reducing other adjuvant therapies with the maximum extent.

  19. URL及MPCNL治疗输尿管上段结石的临床疗效研究%Research on the Clinical Effect of URL and MPCNL in the Treatment of Upper Ureteral Calculi

    Institute of Scientific and Technical Information of China (English)

    万跃平; 李红艳; 习明; 万颂; 华伟

    2016-01-01

    Objective:To research the clinical effect of transurethral ureteroscopic lithotripsy(URL) and minimally invasive percutaneous nephrolithotomy(MPCNL) in the treatment of upper ureteral calculi. Method:320 cases of upper ureteral calculi patients in our hospital from July 2008 to December 2014 were selected as the research objects.They were randomly divided into group A and group B,with 160 cases in each group.Group A was given URL and group B was given MPCNL.Patients with calculus less than 1.5 cm in the two groups were selected as group A1 and group B1 respectively,patients with calculus longer than 1.5 cm in the two groups were selected as group A2 and group B2 respectively.The indexes of intraoperative and postoperative in each group were retrospectively analyzed and compared.Result:The time of operation,intraoperative blood loss,postoperative hospital stay,hospitalization expenses,intraoperative blood transfusion rate,incidence of secondary bleeding,incidence rate of peripheral viscera injury,incidence of postoperative infection and drug use rate for postoperation pain in group A1 and group B1 were lower than those in group A2 and group B2 respectively, the differences were statistically significant(P0.05).The incidence rate of calculi residual 1 month after operation in group B2 was lower than that in group A2,the difference was statistically significant(P1.5 cm的患者分别设为A2、B2组。回顾分析并比较各组术中及术后各项指标。结果:A1、A2组手术时间、术中出血量、术后住院时间、住院费用、术中输血率、继发出血发生率、周围脏器损伤发生率、术后感染发生率、术后疼痛药物使用率均分别低于B1、B2组,比较差异均有统计学意义(P0.05);B2组术后1个月结石残留发生率明显低于A2组,比较差异有统计学意义(P<0.01)。结论:当输尿管上段结石长径大于1.5 cm时首选MPCNL术,它具有非常高的结石清除率;当输

  20. Percutaneous Nephrolithotomy with Cyberwand Dual Probe Ultrasonic Lithotriptor for Treatment of Renal Staghorn Calculi%经皮肾镜Cyberwand双导管超声碎石清石系统治疗肾铸型结石体会

    Institute of Scientific and Technical Information of China (English)

    杨文增; 崔振宇; 马涛; 魏若晶; 张伟; 李昱; 师晓强

    2011-01-01

    Objective To explore the efficacy and skill of ultrasonography - guided percutaneous nephrolithotomy with dual probe ultrasonic lithotriptor in the treatment of renal staghorn calculi. Methods Clinical data of 27 cases including one case with cavitas pelvisectopic kidney staghorn calculi treated hy ultrasonography - guided percutaneous nephrolithotomy with dual probe ultrasonic lithotriptor from July 2009 to April 2010 were analyzed retrospectively. Results The percutaneous renal accesses were successfully established under ultrasound guidance and phase one operation was performed in all patients. The operative duration was 40 ~ 100 minutes, averaged 68 minutes. The intraoperative hlood loss was 30 ~ 150 ml, averaged 72 ml. 23 cases were discharged completely in first phase operation and the stone clearance rate was 85. 2% . 3 cases were treated by ESWL due to residual stones and the residual stones were discharged completely. One case with big residual stones due to hemorrhage was performed second operation. The length of hospitalization was 9 ~ 12 days, averaged 10 days. No severe complications such as delayed hemorrhage and severe infection were found during 1 to 9 months' follow - up. Conclusion Ultrasonography - guided percutaneous nephrolithotomy with dual probe ultrasonic lithotriptor in treatment of upper urinary tract calculi has the advantages of high efficacy, short operative duration, little blood loss and few complications. Estahlishment of Percutaneous renal accesses is very important and attention should be paid in operational skills.%目的 探讨B超引导下经皮肾镜Cyberwand双导管超声碎石清石系统治疗肾铸型结石的疗效及技巧.方法 回顾性分析2009年7月-2010年4月27例在B超引导下应用经皮肾镜Cyberwand双导管超声碎石清石系统治疗肾铸型结石患者的临床资料,其中1例为盆腔异位肾铸型结石.结果 27例均成功建立F24皮肾通道,Ⅰ期完成手术.手术时间40~100

  1. 3种微创手术治疗复杂性输尿管上段结石212例比较%A comparison of three surgical procedures of complicated upper ureteral calculi for 212 cases

    Institute of Scientific and Technical Information of China (English)

    李旭明; 程洪林; 郭闯; 程宗勇; 李锋; 张力; 李元仲

    2011-01-01

    Objective To compare the efficacy of three procedures, ureteroscopic litripsy(URL), minimally invasive percutaneous nephrolithotomy(MPCNL) ,and retroperitoneal laparoscopic ureterolithomy(RLU), for the treatment of complicated upper ureteral calculi. Methods Two hundred and thirteen cases of complicated upper ureteral calculi were treated in this hospital from February 2002 to February 2010,including fifty-two cases of URL, one hundred and seven cases of MPCNL, and fifty-four cases of RLU. Results The stone free rate seven days after operation:URL was 36.5%(19/52),MPCNL was 75.7%(81/107),RLU was 90.6% (48/53); the stone free rate one months after operation: URL was 71. 1% (38/52), MPCNL was 95. 3% (102/107), RLU was 96.2%(51/53); the stone-free rate three months after operation:URL was 82.7%(43/52),MPCNL was 98. 1%(105/107),RLU was 98.1%(52/53). There was significantly difference between URL and MPCNL(P<0.05) ,URL and RLU (P<0.05). There was also significantly difference between MPCNL and RLU in the near future(P<0. 05) ,but had no difference in long term. Conclusion High stone free rate can be obtained with RLU and MPCNL for impacted upper ureteral calculi. The stone-free rate is less satisfactory with URL.%目的 比较输尿管镜碎石(URL)、微创经皮肾镜取石(MPCNL)、后腹腔镜下输尿管切开取石(RLU)治疗复杂性输尿管上段结石的疗效.方法 回顾分析2002年2月至2010年2月复杂性输尿管上段结石212例,其中URL治疗52例,MPCNL治疗107例,RLU治疗54例.比较分析3种手术的治疗效果.结果 术后7 d结石清除率:URL组36.5%(19/52),MPCNL组75.7%(81/107),RLU组90.6%(48/53).术后1个月结石清除率:URL组73.1%(38/52),MPCNL组95.3%(102/107),RLU组96.2%(51/53).术后3个月结石清除率:URL组82.7%(43/52),MPCNL组98.1%(105/107),RLU组98.1%(52/53).URL组分别与MPCNL组、RLU组比较差异有统计学意义(P<0.05),MPCNL、RLU组之间比较近期差异有统计学意义(P<0.05),

  2. 急诊外科治疗老年结石性胆道患者的效果研究%Study the Elderly Biliary Calculi sex Emergency Surgical Treatment Method and Clinical Effect

    Institute of Scientific and Technical Information of China (English)

    谢东方; 宴万述; 于德洋

    2015-01-01

    目的:探讨老年结石性胆道急诊外科的治疗方法和临床效果。方法:抽取我院收治的110例老年结石性胆道急诊的患者为主要研究对象,对其临床资料进行回顾性分析,患者均经过外科手术,对其治疗措施和治疗效果进行分析和研究。结果:外科手术后,发生心功能不全患者3例(2.73%);发生成人呼吸窘迫综合征患者2例(1.81%);糖尿病2型合并酸中毒3例(为2.73%);脑卒中1例(0.91%);肾功能不全1例(0.91%);通过对患者进行针对性的治疗,痊愈的患者有105例(95.45%),死亡5例(4.55%)。结论:在老年结石性胆道疾病的临床治疗过程中,要充分做好术前准备,选择简单、安全的手术方法,有效防治术后并发症,能够获得满意的效果。%Objective:To study the elderly biliary calculi sex emergency surgical treatment method and clinical effect.Methods:ex-traction of our hospital, 110 cases of patients with senile biliary calculi sex emergency as the main research object, the clinical data were analyzed retrospectively, all patients after surgery, the treatment measures and treatment effect is analyzed and the research.Results:af-ter surgery, in patients with cardiac insufficiency in 3 patients (2.73%);Patients with adult respiratory distress syndrome occurred in 2 cases (1.81%) .Type 2 diabetes merged acidosis in 3 patients (2.73%);Stroke in 1 case (0.91%);Renal insufficiency in 1 case (0. 91%);Through the study of the targeted treatment of patients, 105 cases of patients cured (95.45%), 5 cases died (4.55%).Con-clusions:in clinical treatment of senile biliary calculi sex disease process, should make full preoperative preparation, choose operation method is simple, safe, effective prevention and treatment of postoperative complications, and can obtain satisfactory results.

  3. 胆囊颈部结石嵌顿实施腹腔镜胆囊切除术的临床探析%Clinical analysis of laparoscopic cholecystectomy in the treatment of gallbladder neck calculi incarceration

    Institute of Scientific and Technical Information of China (English)

    赵宇

    2016-01-01

    Objective:To analyze the clinical effect of laparoscopic cholecystectomy in the treatment of gallbladder neck calculi incarceration.Methods:92 patients with gallbladder neck calculi incarceration were divided into the control group and the experimental group with 46 cases in each.The control group was given conventional open cholecystectomy treatment.The experimental group was given laparoscopic surgery treatment.The operation time,intraoperative blood loss,postoperative recovery feeding time,hospitalization time and complications were compared in two groups.Results:The two groups were successfully completed surgery.The experimental group had no transfer laparotomy cases.The operation time,intraoperative blood loss, postoperative recovery feeding time,hospitalization time of the experimental group were significantly less than those of the control group(P<0.05).The incidence rate of postoperative complication in the experimental group was significantly lower than that of the control group(P<0.05).Conclusion:Laparoscopic cholecystectomy in the treatment of gallbladder neck calculi incarceration has exact effect.It has the advantages of less trauma, less bleeding,high safety.It is beneficial to the rapid recovery of patients.%目的:分析胆囊颈部结石嵌顿实施腹腔镜胆囊切除术治疗的临床效果。方法:将92例胆囊颈部结石嵌顿患者分为对照组和试验组各46例,对照组给予常规开腹胆囊切除术治疗,试验组给予腹腔镜手术治疗,比较两组患者手术耗时、术中失血量、术后恢复进食时间、住院时间以及并发症等。结果:两组均顺利完成手术,试验组无中转开腹病例;试验组手术耗时、术中失血量、术后恢复进食时间以及住院时间明显少于对照组(P<0.05);试验组术后并发症发生率明显低于对照组(P<0.05)。结论:胆囊颈部结石嵌顿实施腹腔镜胆囊切除术治疗效果确切,且具

  4. Treatment of renal calculi with percutaneous nephrolithotomy under the guidance of ultrasound and local infiltration anesthesia%局部浸润麻醉超声引导下经皮肾镜取石术

    Institute of Scientific and Technical Information of China (English)

    杨秀书; 罗光恒; 刘军; 单刚; 宋大龙

    2008-01-01

    目的 探讨局部浸润麻醉下超声引导经皮肾穿刺取石术( PCNL) 治疗肾结石或输尿管上段结石的方法及效果.方法 该组42例肾结石或输尿管上段结石均采用超声引导, 局部浸润麻醉下行经皮肾穿刺取石术.结果 42例均一期穿刺造瘘成功,39例一期成功PCNL, 3例患者因脓肾改行二期PCNL, 一期手术结石清除率为83.8%.手术时间为15~80 min, 平均55 min, 无严重并发症.结论 局麻下超声引导PCNL治疗多发性肾结石或输尿管上段结石具有操作简单、创伤小、并发症少、恢复快、结石清除率高等优点, 可作为部分简单肾结石或输尿管上段结石的治疗方法.%Objective To evaluate the feasibility and availability of percutaneous nephrolithotomy(PCNL) under the guidance of ultrasound and local infiltration anesthesia on renal calculi or ureteral calculus. Methods We retrospectively investigated 42 patients with renal calculi or ureteral calculus who underwent PCNL. All the 42 cases underwent PCNL with local infiltration anesthesia under the guidance of ultrasound. Results Among 42 cases, 39 cases were stone free after one stage PCNL, 3 cases stone free after two stages PCNL for renal pyonephrosis. The total stone free rate was 83.8%. The operative duration was 55 min (15-80 min). No severe complications were observed. Conclusions PCNL under the guidance of ultrasound and local infiltration anesthesia offers advantages with respect to easy operation, less invasion, less complications, high stone free rate. It is a minimally invasive way in treatment of simple renal and ureteral calculus.

  5. Observation Clinical Effect on Percutaneous Renal Endoscopy in Treatment of Upper Ureteral Incarceration Calculi%经皮肾镜治疗输尿管上段嵌顿性结石的临床效果观察

    Institute of Scientific and Technical Information of China (English)

    张洪伟; 苏丹

    2016-01-01

    Abstract]Objective To investigate the clinical effect of percutaneous renal endoscopy in the treatment of upper ureteral calculi.Methods To upper ureteral block incarcerated stone in patients with 96 cases as the research object, which were randomly assigned to two groups, each group had 48 cases, observe group received percutaneous nephrolithotomy in the treatment, and the control group was given treatment of ureteral lithotripsy, compared two groups of patients with treatment effect differences. Results Observation group of patients in hospital time (3.8±1.2) days, stone complete clearance rate were better than the control group, was difference had statistically significance (P<0.05).Conclusion The percutaneous nephrolithotomy treatment of upper ureteric calculi patients compared to conventional ureteral lithotripsy, can be more comprehensive and remove the calculus patients and shorten the hospitalization time.%目的:探讨经皮肾镜治疗输尿管上段嵌顿性结石患者的临床效果。方法以输尿管上段嵌顿性结石患者96例作为研究对象,将患者随机分为两组,各48例。观察组给予经皮肾镜治疗,对照组给予输尿管镜碎石术治疗,对比两组患者治疗效果差异。结果观察组患者住院时间(3.8±1.2)d、结石完全清除率均优于对照组,差异有统计学意义(P<0.05)。结论经皮肾镜治疗输尿管上段嵌顿性结石患者相较于常规输尿管碎石术,能更加全面的清除患者体内结石并缩短其住院时间。

  6. Ureteroscopic holmium laser lithotripsy in treatment of middle or lower ureteral calculi:a report of 70 cases%输尿管镜钬激光碎石术治疗输尿管中下段结石70例

    Institute of Scientific and Technical Information of China (English)

    许海斌; 关超; 谷明利; 方文革; 赵维多; 徐卫强; 谢海龙; 郭园园

    2011-01-01

    目的:探讨输尿管镜钬激光碎石术治疗输尿管中下段结石的有效性及安全性.方法:应用硬性输尿管镜联合钬激光碎石术治疗输尿管中下段结石70例,其中中段结石26例,下段结石44例.结石合并急性肾绞痛8例,合并输尿管息肉22例,合并输尿管狭窄5例.结果:单次碎石成功67例,成功率95.7%.1例因输尿管开口水肿狭窄导致置镜困难,1例术中结石移位至肾脏,1例结石息肉包裹改开放手术.术中发生输尿管穿孔4例,术后并发泌尿系感染1例,经积极抗感染治疗后痊愈.随访2~6个月,无结石残留及输尿管狭窄发生.结论:输尿管镜钬激光碎石术治疗输尿管中下段结石具有高效、微创、安全等优点,是输尿管中下段结石首选的治疗方法.%Objective:To investigate the efficacy and safety of ureteroscopic holmium laser lithotripsy in treatment of middle or lower ureteral calculi. Methods: Holmium laser lithotripsy was conducted in 70 cases of middle and lower ureteral calculi via rigid ureteroscope. There were 26 cases with middle ureteral calculi and 44 cases with lower ureteral calculi. Acute renal colic was occurred in 8 cases. Polyp was found in 22 cases and ureteral stenosis was found in 5 cases. Results: The successful lithotripsy in a single procedure was achieved in 67 cases and the success rate was 95.7%. Failure of ureteroscopy placement occurred in one case because of stricture of ureteral orifice. Calculi was translocated to renal pelvis in one case. Conversion to open surgery was occurred in one case because of polyp package of ureteral calculi. Ureteral perforation was occurred in 4 cases and urinary tract infection was occurred in one case who was recovered after use of antibiotics. There was no ureteral stenosis or calculous remnant happening after following-up of 2 to 6 months. Conclusions:Treatment of ureteral calculi by ureteroscopic holmium laser lithotripsy is an effective,less invasive and safe

  7. 软镜配合腹腔镜治疗输尿管结石合并肾结石的临床疗效观察%Clinical Curative Effect Observation Treating Ureteral Calculi with Renal Calculi with Soft Lenses and Laparoscopy

    Institute of Scientific and Technical Information of China (English)

    王安勇; 李斌; 余乐

    2016-01-01

    Objective To evaluate the efficacy of laparoscopy joined with oledochoscope on the treatment of ureteral and renal calculus.Methods We conducted a retrospective analysis form march 2011 to september 2013 on the patients who were diagnosed with kidney stones ipsilateral ureteral stones in our hospital.We evaluated the efficacy of laparoscopy joined with oledochoscope on the treatment of ureteral and renal calculus.Results All 32 patients were successfully removed the stones and completed the surgery.There were no bleeding and other complications in surgery. The average completion time was 165min,and there were eight patients whose operation time were longer than 160min.The average hospital stay was 12 days after surgery.7 days after surgery,we found the clearance rate of stones were 100%.We follow-up after surgery,and found hydronephrosis of patients had been significantly improved,and there no ureteral stricture and renal function deterioration.Conclusion Laparoscopy joined with oledochoscope on the treatment of ipsilateral kidney with middle and upper ureteral calculi was safe,effective,fewer complications,and had high stone clearance rate,and had a therapeutic advantage on the treatment of ureteral and renal calculus disposably.%目的:评价软镜配合腹腔镜治疗输尿管结石合并肾结石的疗效。方法回顾性分析,2011年3月至2013年9月32例在我院被诊断为输尿管结石合并同侧肾结石患者临床资料。同时分析经腹径入路腹腔镜输尿管切开除石,联合软镜除肾结石治疗这32例患者输尿管中上段结石合并同侧肾结石的治疗效果。结果32例患者均顺利取出结石,完成手术。术中未出现大出血等并发症。手术平均完成时间为165min;其中有8例患者手术操作时间大于160min。术中平均出血量为26ml。术后平均住院天数为12天。术后7天,检查发现除石率100%。术后随访,发现患者肾积水得到明显改

  8. 输尿管软镜下钬激光治疗肾盂旁囊肿合并肾结石的应用%Application study on flexible ureteroscope /holmium laser therapy of parapelvic cyst complicating with renal calculi

    Institute of Scientific and Technical Information of China (English)

    陈海潮; 邵法明; 孙树本; 缪起龙

    2015-01-01

    目的 探讨输尿管软镜下钬激光治疗肾盂旁囊肿合并肾结石的手术方法、安全性、可行性. 方法 回顾性分析我院2012年11月至2014年11月共收治8例肾盂旁囊肿合并肾结石患者的临床资料,其中男5例,女3例,年龄54~78岁,平均63岁.最大单颗肾结石大小1.2 cm×1.1cm ~1.5 cm×2.0 cm,囊肿大小3.2cm×3.6 cm~5.1 cm×4.2cm,腰部酸胀不适6例,血尿3例,肾盂积水1例,局限性肾盏积水2例,合并高血压3例,泌尿系感染3例.在全麻下行经尿道输尿管软镜钬激光下肾盂旁囊肿内切开引流+肾结石碎石取石术. 结果 8例手术均成功,处理结石及囊肿时间共为52~120 min,平均76 min.术中、术后无大出血、肾周血肿、尿外渗、感染性休克、患肾萎缩等并发症发生,术后随访3~12个月,全部病例无肾结石残留,其中6例囊肿消失,2例囊肿明显缩小,随访期内无复发. 结论 经尿道输尿管软镜下钬激光治疗肾盂旁囊肿合并肾结石具有创伤小、恢复快、术式简单、经济、安全有效等优点.%Objective To investigate the safety and feasibility of flexible ureteroscope/holmium laser therapy of parapelvic cyst complicating with renal calculi.Methods The clinical data of 8 patients diagnosed as parapelvic cyst with renal calculi and hospitalized in our hospital from Nov.2012 to Nov.2014 were retrospectively analyzed.They were 5 males and 3 females,aged 54 78 years,with an average of 63 years old.The largest kidney calculis were at the size of (1.2 cm× 1.1 cm) to (1.5cm×2.0 cm),and the size of parapelvic cysts ranged between (3.2 cm×3.6 cm) and (5.1 cm×4.2cm).Waist pain was found in 6 patients,hematuria in 3 patients,hydronephrosis in 1 patient,circumscribed hydrocalycosis in 2 patients,hypertension in 3 patients,and infection of urinary tract in 3 patients.Incision and internal drainage of parapelvic cyst and lithotripsy for renal calculi were conducted by flexible ureteroscope

  9. 原位无萎缩性肾实质切开取石术治疗巨大肾鹿角形结石体会(附52例报告)%In situ big dissection of anatrophic nephrolithotomy to remove large renal staghorn calculi:report of 52 cases

    Institute of Scientific and Technical Information of China (English)

    宋希双; 殷积斌; 张仁科; 车翔宇; 何中舟; 张志伟; 臧青山

    2008-01-01

    目的 探讨原位无萎缩性肾实质切开取石术治疗巨大肾鹿角形结石的方法和疗效.方法 52例患者,术前评估包括尿常规、尿细菌培养、肾功能、彩色多普勒超声、CT、立位腹部X线平片(KUB)和IVU检查.术中腰部第11肋间切口入路,充分游离肾脏,原位低温阻断肾蒂后,于相对无血管区大切口切开肾实质、肾盏、肾盂,取出结石,重建集合系统,缝合肾实质,恢复肾脏血供.术中采用肾功能保护措施.术后随访包括尿常规、肾功能、彩色多普勒超声、KUB、IVU和核素肾扫描.结果 手术时间(117±45)min.肾缺血时间(29±15)min.术中输血5例,平均输血230 ml.结石残留4例,结石清除率92.3%.术后均无近期并发症,随访肾功能均正常.结论 原位无萎缩性肾实质切开取石术是治疗巨大肾鹿角形结石安全有效的方法,术后并发症少,结石一次性取出、清除率高,术后复发率低.经过系列肾功能保护处理,对肾功能损害小,部分病例避免了肾切除.%Objective To discuss the method and effect of large renal staghorn calculi by anatrophic nephrolithotomy (AN).Methods Fifty-two patients with large renal staghom calculi underwent AN.Bilateral renal calculi disease was present in 3 patients,so that a number of 55 procedures were operated.Preoperative evaluation included urinalysis,urine culture,renal function,and ultragound,CT,KUB and IVU.A flank incision was between the 11th and 12th ribs and the kidney was freed.After interrupted renal pedicle in situ hypothermia,the renal parenchyma incision was made along the avascular plane which is outside in the back of the kidney.The collecting system was opened.The calculi were removed.The collecting system was reconstructed.The renal parenchyma was closed and the renal circulation was reestablished.The protected management of renal function was made intraoperative.Postoperative follow-up consisted of urinalysis,renal function

  10. 超声引导经皮肾镜气压弹道联合超声碎石治疗马蹄肾结石的效果%Efficacy of percutaneous nephrolithotomy with pneumatic and ultrasonic lithotripsy guided by ultrasound for horseshoe kidney with calculi

    Institute of Scientific and Technical Information of China (English)

    梁宏; 魏金星; 文建国; 李春伟; 程传宇; 武玉东

    2012-01-01

    To investigate the feasibility of percutaneous nephrolithotomy( PCNL ) with pneumatic and ultrasonic lithotripsy under ultrasound guidance for horseshoe kidney with calculi. Methods: Clinical data of 46 cases of horseshoe kidney with calculi treated by PCNL with pneumatic and ultrasonic lithotripsy under ultrasound guidance were retrospectively analyzed. Results: The 46 cases were successfully established artificial calculus-extracting passage with one-stage operation. The average hospitalization time was 5.0 - 17.0(6. 9 ± 1. 8 ) days, operation time was 46 ~ 12l( 75 ±24 ) min, calculi processing time was 31 ~ 68( 49 ± 17 ) min, and the average blood loss was 28~92(60±3l) mL. All patients did not transfuse blood; calculi-free rate was 82. 6%( 38/46 ) with one-stage operation, and that was 91. 3%( 42/46 ) with two-stage operation. Two cases accepted postoperative adjuvant extracoporeal shock wave lithotripsy, and total calculi clearance rate reached 95.7% ( 44/46 ). There was no associated complication. Conclusion:PCNL with pneumatic and ultrasonic lithotripsy under ultrasound guidance is safe and reliable for horseshoe kidney with calculi.%目的:评价超声引导经皮肾镜气压弹道联合超声碎石术治疗马蹄肾结石的效果.方法:46例马蹄肾结石患者行经皮肾镜气压弹道联合超声碎石术治疗,对其手术和住院时间,术中和术后并发症以及结石清除情况等进行分析.结果:46例患者Ⅰ期均成功建立经皮肾通道.平均住院5.0~17.0(6.9±1.8) d,手术时间为46~121(75±24) min,结石处理时间为31~68(49±17) min,失血量为28~92(60±31) mL,患者围手术期无输血;Ⅰ期结石清除率为82.6%(38/46),Ⅰ+Ⅱ期结石清除率为91.3%(42/46),2例术后辅助体外冲击波碎石,总结石清除率为95.7%(44/46).未出现与碎石相关的并发症.结论:超声引导经皮肾镜气压弹道联合超声碎石术治疗马蹄肾结石疗效好.

  11. 输尿管软镜下钬激光碎石术治疗上尿路结石——附126例报告%Treatment of Upper Urinary Calculi with Holmium Laser Lithotriptor under Flexible Ureteroscope (Appended with Report of 126 Cases)

    Institute of Scientific and Technical Information of China (English)

    周振宇; 何朝晖; 杨江根; 曾国华

    2013-01-01

    Objective To evaluate the clinical effect of holmium laser with flexible ureteroscope on upper urinary calculi.Methods All 126 patients of upper urinary calculi were treated with Holmium laser lithotriptor under flexible ureteroscope in our hospital.Of them,75 patients had calculi in the right side and 51 patients in the left side.The calculi were in the kidney for 64 patients,in the upper ureteral for 33 patients,and both in the upper ureteral and kidney for 29 patients.The diameter of the calculi ranged 0.6-2.0 cm,mean 1.33 cm.After ureter dilation and placement of ureteral access sheath,the stone were fragmented and removed with 200μm Ho ∶ YAG laser fiber,energy 0.8-1.0 J,frequency 5-10 Hz.Results The successful rate of stone fragmentation after single session was 92.86% (117/126).Mean operation time was 48 min(23-71 min).Six patients had low fever after the operation.Neither ureteral perforation nor pyonephrosis was observed.Conclusions The therapy of Holmium laser lithotriptor under flexible ureteroscope is safe and effective for upper urinary calculi,especially for upper ureteral,pelvis,middle calyx and upper calyx stones.%目的 探讨输尿管软镜下钬激光碎石术治疗上尿路结石的疗效.方法 上尿路结石患者126例,其中右侧结石75例,左侧结石51例.输尿管上段结石33例,输尿管上段合并肾结石29例,肾结石64例.结石大小0.6 ~2.0 cm,平均1.33 cm.经输尿管硬镜扩张后留置输尿管扩张鞘寻找结石,采用输尿管软镜下钬激光碎石术治疗,光纤直径200μm,能量0.8~1.0J,频率5~10Hz.结果 单次碎石成功117例(占92.86%),手术时间25~ 75 min,平均48 min.术后6例出现低热,无脓肾、输尿管穿孔等并发症.结论 输尿管软镜下钬激光碎石术治疗上尿路结石安全有效,尤其适用于输尿管上段、肾盂、肾中盏及肾上盏结石.

  12. Efficacy of extracorporeal shock wave lithotripsy in the emergency treatment of pediatric ureteral calculi with renal colic%急诊冲击波碎石术治疗小儿绞痛性输尿管结石的临床研究

    Institute of Scientific and Technical Information of China (English)

    桂西青; 孙华宾; 郭振宇; 苗永青; 周少朋

    2008-01-01

    Objective To study efficacy of pediatric ureteral calculi with renal colic by the emergency treatment of extracorporeal shock wave lithotripsy (ESWL). Methods We reviewed the treatment and out-come of 31 pediatric patients with renal colic for ureteral calculi in the emergency treatment of ESWL over a 10-year period (1997~2007). Results 25 cases underwent one ESWL session;5 cases had two ESWLses-sions; 1 case underwent other treatment procedures after failure of 3 ESWL sessions. The stone-free rate was 96.8% (30/31).The renal coli of 28 cases (90.3%) relieved apparently in the one ESWL session. No severe complication was found. 19 cases required intravenous general anesthesia in the ESWL. Conclusion The e-mergency treatment of ESWL is an efficient and safe modality for pediatric ureteral calculi with renal colic.%目的 评价急诊体外冲击波碎石术(ESWL)治疗小儿绞痛性输尿管结石之效果.方法 回顾1997年1月至2007年12月32例小儿输尿管结石伴急性肾绞痛的急诊ESWL的治疗资料.结果 1次ESWL 25例;2次ESWL 5例;1例3次ESWL治疗失败后改其他治疗,总结石排净率为96.8%(30/31).首次ESWL治疗后,28例肾绞痛完全缓解(90.3%).ESWL术中,静脉全麻19例,镇静加止痛剂者12例.术后无严重并发症.结论 急诊ESWL治疗小儿绞痛性输尿管结石安全快捷、疗效肯定.

  13. Risk Factors for Urinary Calculi in Children of Migrant Workers in Nanlang Town of Zhongshan%中山市南朗镇外来务工人员随迁子女泌尿系结石危险因素调查

    Institute of Scientific and Technical Information of China (English)

    吴耀华; 饶惠平; 丁敏

    2015-01-01

    目的:分析外来务工人员随迁子女泌尿系结石的患病特征及影响因素。方法通过体检资料获得南朗镇外来务工人员随迁子女(W 组)和本地子女(B 组)4~10岁儿童各1260例。采用自制调查问卷收集泌尿系结石的影响因素信息并进行统计学分析。结果泌尿系结石患病率 W 组(3.14%)高于 B 组(1.75%),差异有统计学意义(χ2=6.964,P =0.008);饮水达标率 W 组(36.0%)低于 B 组(81.9%),差异有统计学意义(χ2=549.979,P <0.001);尿道感染率 W 组(46.5%)高于 B 组(22.7%),但差异无统计学意义(χ2=3.478、P =0.062);2组高钙尿发生比例比较差异无统计学意义(χ2=0.017,P =0.896);父母对预防小儿泌尿系结石知识评分 W 组为(2.39±1.913)分,低于 B 组的(4.12±1.791)分,差异有统计学意义(t=23.433,P <0.001)。结论外来务工人员随迁子女泌尿系结石患病率高于本地户籍儿童。小儿泌尿系结石可能与饮水量不足、父母对预防小儿泌尿系结石知识知晓度有关。%Objective To analyze the characteristics of urinary calculi and its influencing factors in children of migrant workers in Nanlang.Methods The factors influencing urinary calculi were investigated in 1 260 children of migrant workers (group W)and 1 260 local children (group B)in Nanlang using the self-designed questionnaires.Data were analyzed statistically.Results The prevalence of urinary calculi,rate of drinking water complying with standard,incidence of urinary tract infection and urinary calculi knowledge score of parents were,respectively,3.14%,36.0%, 46.5% and (2.39±1.913)in group W,and 1.75%,81.9%,22.7% and (4.12±1.791)in group B. There were significant differences in the prevalence of urinary calculi(χ2 =6.964,P =0.008),rate of drinking water complying with standard(χ2 =549.979,P

  14. 腹膜后腹腔镜治疗难治性输尿管结石45例分析%Retroperitoneal laparoscopy in the treatment of 45 cases with refractory ureteral calculi

    Institute of Scientific and Technical Information of China (English)

    廖祥钧

    2015-01-01

    Objective To explore the clinical efficacy of retroperitoneal laparoscopy in the treatment of refractory for ureteral stones.Methods From January 2010 to January 2015,the clinical data of 45 patients with refractory ureteral stones were retrospectively analyzed.The manner,duration of surgery,complications and length of stay and other indicators were summarized,and the treatment effect was evaluated.Results 45 patients were success-fully operated,of which 38 patients taken simple lithotomy,7 cases received simultaneous resection and anastomosis of ureter stenosis,the surgery time was 35 -135 minutes,5 -15 days in the hospital after surgery.Postoperative compli-cations:urinary fistula in 3 cases and 2 cases of wound infection was curable with appropriate treatment.Postoperative follow -up 3 -24 months,3 cases of recurrent calculus,2 patients with mild stenosis of ureter.Conclusion The retroperitoneal laparoscopy in treatment of refractory ureteral calculi trauma has quicker recovery and fewer complica-tions,which is currently the preferred method for treatment of refractory for ureteral calculi.%目的:探讨腹膜后腹腔镜治疗难治性输尿管结石的临床疗效。方法回顾性分析2010年1月至2015年1月收治的45例难治性管结石输尿患者的临床资料,总结手术方式、手术时间、并发症及住院时间等指标,评价治疗效果。结果45例患者均顺利完成手术,其中38例采取单纯切开取石术,7例同时行狭窄段输尿管切除吻合术,手术时间35~135 min,术后住院时间5~15 d。术后并发症:3例发生尿瘘,2例发生切口感染,均通过相应治疗后治愈。术后随访3~24个月,3例结石复发,2例并发输尿管轻度狭窄。结论腹膜后腹腔镜治疗难治性输尿管结石创伤小,恢复快,并发症少,是目前治疗难治性输尿管结石的首选方法。

  15. Clinical Diagnosis of Urinary Calculi Application Observed the Effect of Different Dose of CT Scanning%泌尿结石临床诊断应用不同剂量CT扫描效果观察

    Institute of Scientific and Technical Information of China (English)

    黄锦炽

    2015-01-01

    Objective Discusses the application of different dose of CT scan in the clinical diagnostic value of urinary calculi.Methods In chronological order according to admission registered 200 cases of suspected urinary calculi were divided into a control group and the observation group, the 100 cases respectively. Control group with conventional-dose CT scan (120KV, 150mA); Observe the different groups were used (100mA, 80mA, 50mA) low-dose CT scans based on patient body mass index. Comparison of the two groups were image quality score (IQS) and volume CT dose index (CTDIvol), scanning sensitivity, specificity, positive predictive value, negative predictive value.Results The study found that the observation group CTDIvol was (6.5±1.1) and the control group (19.7±1.4) compared with statistical significance (P 0.05).Conclusion Compared with conventional dose CT scan, according to body mass index (bmi) in patients with clinical use of low-dose CT scan, the images quality, specificity, positive predictive value and its quite. But low dose CT scanning process produced less radiation dose, therefore cause harm to patients, more worthy of popularization and application.%目的:探讨不同剂量CT扫描应用于泌尿结石临床诊断价值。方法按照入院挂号时间顺序将200例拟诊泌尿系结石患者分为对照组与观察组,各100例。对照组采用常规剂量CT扫描检查(120KV、150mA);观察组根据患者体重指数不同分别采用(100mA、80mA、50mA)低剂量CT扫描。比较2组患者图像质量评分(IQS)和容积CT剂量指数(CTDIvol)、扫描敏感性、特异性、阳性预测值、阴性预测值。结果经研究发现,观察组CTDIvol为(6.5±1.1)与对照组(19.7±1.4)比较,具有统计学意义(P0.05)。结论相比常规剂量CT扫描来说,临床根据患者体重指数采用低剂量CT扫描,其图像质量、特异性、阳性预测值与其相当。但低剂量CT扫描过程中所产生辐射剂量要少,因此

  16. Clinical Research of Ureteroscopic Lithotripsy in The Treatment of Complicated Ureteral Calculi%经输尿管镜取石术在治疗复杂性输尿管上段结石中的临床研究

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    Objective:To compare and analyze clinical effects of ureteroscopic lithotripsy(URL)in the treatment of complicated ureteral calculi. Method:70 patients who had received treatments of URL in our hospital from January 2010 to January 2012 were chosen,the patients were randomly divided into experimental and control groups,35 people in each group. The experimental group received treatment of URL to remove stones,whereas the control group undergone treatment of extracorporeal shock wave lithotripsy(ESWL). 1 week and 4 weeks after the surgery,all patient were reviewed. Patients who were found with stones need to be rechecked until two months after the review. All patients were followed up for 2-10 months,with an average of six months. The treatment effects were evaluated based on the following standards:operation time,time of postoperative hospital stay,rate of successful surgery,the amount of bleeding,clearance rate of stones,complications,and other indicators.Result:After treatment,the successful rate of experimental group was significantly higher than that of the control group(P0.05).Conclusion:URL is a feasible and effective method to treat complicated ureteral calculi.%  目的:对比研究经输尿管镜取石术在治疗复杂性输尿管上段结石中的临床疗效。方法:选取2010年1月-2012年1月于本院接受治疗的复杂性输尿管上段结石患者70例,将70例患者随机分为实验组和对照组,每组35例,实验组患者接受经输尿管镜取石术(URL)清除结石,对照组患者接受体外冲击波碎石(ESWL)清除结石。手术后1周内和第4周内对患者进行复查,对术后4周仍发现结石的患者等待到术后2个月再次复查同样的项目。对所有患者进行随访,随访时间为2~10个月,平均6个月。对两组的手术时间、术后住院时间、一次手术成功率、出血量、结石清除率、并发症等指标进行评价。结果:治疗后实验组(URL)的一

  17. 经皮肾镜Ⅰ期治疗肾铸型结石合并脓肾45例%Treatment of renal struvite staghorn calculi complicated with pyonephrosis via percutaneous nephrolithotomy

    Institute of Scientific and Technical Information of China (English)

    周大庆; 王坚; 李文刚; 庞翔; 余小祥; 江波

    2011-01-01

    Objective To evaluate the efficacy and safety of percutaneous nephrolithotomy for renal struvite staghon calculi complicated with pyonephrosis. Methods 45 patients who caught struvite staghon calculi complicated with pyonephrosis were analysised. Pyonephrosis was found in 27 patients pre-operation.18 patients were found complicated with pyonephrosis during operation.Urine culture were performed in all the patients before operation and percutanous nephrorithotomy were perfoumed after antibiotics treating. The tract was dilated to F24 and the stones were removed by EMS lithotrity system.The operation time were limited in two hours whenever the stone free or not. Results 32 patients were free-stone after first stage percutaneous nephrorithotomy and 8 patients were underwent second stage operation fore residual stones. 5 patients were cured by EWSL after first stsge operation. All the patients caught fever after operation and 17 patients' temperature were above 38.5℃. The blood culture were performed in all the patients.and bactermia and septicemia were not found. Conclusion Percutaneous nephrorithotomy of standard tract is a safe and effective procedure for struvite stahgorn caculi complicated with pyonephrosis.%目的:探讨肾铸型结石合并脓肾的治疗方法.方法:分析合并脓肾的肾铸型结石患者45例,其中术前明确脓肾诊断27例,术中穿刺后发现脓肾18例,所有患者术前行常规尿培养,经抗感染治疗后行经皮肾镜治疗,术中穿刺成功后常规扩张至F24标准肾镜通道,根据结石坚硬程度分别用EMS超声或联合气压弹道碎石,手术时间控制在2 h内,如结石无法清除,予留置肾造瘘管、双J管后再行二期手术治疗,术后根据情况行造瘘管间断呋喃西林冲洗.结果:术后复查,一期手术取尽结石32例(71%),8例仍有较多结石残留,行二期取石,5例残留结石较小,行体外冲击波碎石治疗后治愈.所有患者术后不同程度发热,17

  18. 输尿管镜下气压弹道碎石治疗输尿管结石的临床疗效分析%Clinical experience of Ureteroscopic Pneumatic Lithotripsy in the Treatment of Ureteral Calculi

    Institute of Scientific and Technical Information of China (English)

    曾明祥

    2013-01-01

    目的探讨输尿管镜下气压弹道碎石治疗输尿管结石的疗效。方法对我院2009年10月至2011年12月76例输尿管结石患者行输尿管镜下气压弹道碎石术。结果输尿管镜下气压弹道碎石治疗输尿管结石76例中。一次性成功碎石的有73例(96.1%),2例因液压灌注压力高被冲至肾盂内,术后行体外冲击波碎石术(ESWL)后碎石成功,1例因输尿管下段狭窄输尿管镜无法通过转开放手术。结论输尿管镜下气压弹道碎石术具有疗效确切,成功率高、并发症少的特点,是输尿管中段,下段结石的有效方法。%Objective To probe the clinical effects of Ureteroscopic Pneumatic Lithotripsy in the treatment of ureteral calculi.Methods To the 76 patients who got ureteral calculus and treated in our hospital,by the using of rigid Ureteroscopic Pneumatic lithotripsy to process lithotripsy.Results In tiffs group which includes 76 patients,73 cascs were healed,the success rate were 96.1%.Conclusions Ureteroscopic Pneumatic Lithotripsy was highly effective and safety for the treatment of ureteral calculus.

  19. 自拟方治疗虚实夹杂型肾结石的疗效观察%Observation of Efficacy of Self-made Prescription in Treatment of Kidney Calculi of Deficiency-excessiveness Types

    Institute of Scientific and Technical Information of China (English)

    沈伟明

    2015-01-01

    OBJECTIVE:To probe into the efficacy of self-made prescription in treatment of kidney calculi of deficiency-excessiveness types .METHODS:90 cases with kidney calculi of deficiency-excessiveness types admitted into the Community Health Services Center of Guangzhou Yuexiu District Beijing St .from Jun.2013 to Nov.2014 were selected as the research objects , who were divided into observation group and control group via the random number table , with 45 cases in each group .The control group were treated with orally hydrochlorothiazide ( 25 mg/time, 3 times/day), and orally anisodamine (10 mg/time, 3 times/day), and patients with urinary tract infection would be treated with antibiotics .The observation group received the self-made prescription treatment .The efficacy of patients, efficacy of TCM syndrome and indicators changes of urine β2-MG, blood β2-MG, Cr and BUN before and after treatment in two group of patients were observed .RESULTS: The total effective rate of observation group was significantly higher than that of the control group [ 93.33%( 42/45 ) VS 82.22%( 37/42 ) ] , with statistically significant difference(P<0.05).The urineβ2-MG, bloodβ2-MG, Cr and BUN of observation group was significantly lower than that of before treatment ,and it was lower than the control group , with statistically significant difference ( P<0.05).Also, the total effective rate of TCM syndrome in observation group was significantly higher than that in the control group [ 91.11%(41/45)VS 80.00%(36/45)], the difference was significant(P<0.05).CONCLUSIONS:Self-made prescription in treatment of kidney calculi of deficiency-excessiveness types has good efficacy , which is worthy of clinical promotion .%目的:探讨自拟方治疗虚实夹杂型肾结石的疗效。方法:选取2013年6月—2014年11月广州市越秀区北京街社区卫生服务中心收治的90例虚实夹杂型肾结石患者为研究对象,按随机数字表法分为观察组和对照组各45例。对

  20. 输尿管软镜治疗孤立肾上尿路结石34例临床观察%Clinical observation of flexible ureteroscopy in the treatment of upper urinary tract calculi of solitary kidney

    Institute of Scientific and Technical Information of China (English)

    胡嘉盛; 袁鹤胜; 谢国海; 刘冠琳; 贾晓龙; 郑重; 程跃

    2014-01-01

    Objective To explore the effect and surgical techniques of flexible ureteroscopy in the treatment of upper u‐rinary tract calculi of solitary kidney .Methods From Jan .2012 to Dec .2013 ,34 cases of upper urinary tract calculi of soli‐tary kidney underwent flexible ureteroscopy ,of which 2 cases were congenital solitary kidney ,8 were contralateral nephrecto‐my ,and 24 were contralateral renal atrophy .Among the 24 atrophy cases ,17 underwent open operation ,4 had multiple extra‐corporeal shock wave lithotripsy history .Of all patients ,21 had residual stones after percutaneous nephrolithotomy ,and 23 ca‐ses had D‐J catheter indwelt 1-4 weeks before the operation .Results The operation time was 40-125 minutes .As many as 30 cases had stones successfully crushed with one session ,the success rate being 88 .2% (30/34) .Of these patients ,17 showed no residual stones after one month of follow‐up ,and the diameter of 13 patients'residual stones was smaller than 4 mm .Three months later ,the stones were fully discharged .The operation failed in 2 patients because the vision of the flexible ureteroscope could not touch the stones ,and after extracorporeal shock wave lithotripsy (ESWL) there were still residual stones with diame‐ter larger than 4 mm .One patient had underwent a second surgery with an interval of one month .The other patient received a third surgery .Either of them had residual stones after one month of follow‐up .Conclusions Flexible ureteroscope is safe and effective in the treatment of upper urinary tract calculi of solitary kidney ,especially for patients who have experienced percutaneous nephrolithotomy with residual stones .%目的:探讨输尿管软镜治疗孤立肾上尿路结石的疗效及手术技巧。方法2012年1月至2013年12月对34例孤立肾上尿路结石患者行输尿管软镜碎石术,其中先天性孤立肾2例,对侧肾切除所致孤立肾8例,对侧肾萎缩(无功能肾)24例;萎缩肾有17

  1. Clinical analysis of percutaneous nephrolithotomy for staghorn calculi with different stone branch number%鹿角形肾结石分支数对经皮肾镜取石术的影响

    Institute of Scientific and Technical Information of China (English)

    齐士勇; 张志宏; 张昌文; 刘冉录; 史启铎; 徐勇

    2013-01-01

    Objective To investigate the impact of staghorn stone branch number on outcomes of percutaneous nephrolithotomy (PNL).Methods From January 2009 to January 2013,the 371 patients with staghorn stones who were referred to our hospital for PNL were considered for this study.All calculi were showed with CT 3-dimentional reconstruction (3-DR) imaging.The computerized database of the patients had been reviewed.Our exclusion criterion was patients with congenital renal anomalies,such as horse-shoe and ectopic kidneys.And borderline stones that branched to one major calyx only were also not included.From 3-DR images,the number of stone branching into minor renal calices was recorded.We made "3" as the branch breakdown between groups.And the patients were divided into four groups.The number of percutaneous tract,operative time,staged PNL,intra-operative blood loss,complications,stone clearance rate,and postoperative hospital day were compared.Results The 371 patients (386 renal units)underwent PNL successfully,included 144 single-tract PNL,242 multi-tract PNL,97 staged PNL.The average operative time was (100±50) minutes; the average intra-operative blood loss was (83 ± 67) ml.The stone clearance rate were 61.7% (3 days) and 79.5% (3 months).The postoperative hospital stay was (6.9 ± 3.4) days.A significantly higher ratio of multi-tract (x2 =212.220,P < 0.01) and staged PNL (x2 =49.679,P < 0.01),longer operative time (F =4.652,P < 0.01) and postoperative hospital day (F =2.067,P =0.043) and lower rate of stone clearance (x2 =10.691 and 47.369,P < 0.05) were found in PNL for calculi with stone branch number ≥ 5.There was no statistically meaningful difference among the 4 groups based on Clavien complication system (P =0.460).Conclusion The possibility of multi-tract and staged PNL,lower rate of stone clearance and longer postoperative hospital day increase for staghorn calculi with stone branch number more than 5.%目的 探讨鹿角形肾结石分支数对

  2. NTrap网篮在输尿管镜钬激光碎石术治疗输尿管上段结石中的应用研究%Clinical study on holmium laser combined with NTrap basket in ureteroscopic lithotripsy for upper ureteral calculi

    Institute of Scientific and Technical Information of China (English)

    任晓磊; 夏海波; 高志明; 包国昌; 兰东阳; 王海鹏; 庞自力

    2013-01-01

    目的:对比单独使用钬激光与配合钬激光使用NTrap网篮在输尿管镜碎石术治疗上段输尿管结石中的临床疗效.方法:诊断患有输尿管上段结石的患者共106例11 5侧,住院期间均采用输尿管镜下钬激光碎石术进行治疗.其中对照组70侧,观察组45侧,对照组在术中单独使用钬激光碎石,观察组在术中同时配合钬激光使用NTrap网篮.比较对照组和观察组术中结石上移率、手术成功率,术后1个月结石排净率及术中术后并发症的发生情况.结果:术中对照组和观察组结石上移率分别为24.29%(17/70)和6.67%(3/45),碎石成功率分别为80.00% (56/70)和95.56%(43/45),手术成功的两组术后1个月结石排净率分别为82.14%(46/56)和95.35%(41/43),两组术中结石上移率、手术成功率和术后结石排净率相比较差异有统计学意义(P<0.05).对照组术中发生输尿管穿孔 2侧,观察组发生输尿管穿孔1侧.术后对照组有2例患者出现严重血尿,观察组1例出现严重血尿.对照组与观察组术后各有4例患者出现发热.两组术中术后相关并发症的发生率相比较差异无统计学意义(P>0.05).结论:在输尿管镜碎石术治疗输尿管上段结石时,使用NTrap网篮配合钬激光碎石可以显著降低结石的上移率,提高手术成功率和术后1个月结石排净率,是一种安全、有效的方法.%Objective:To compare the clinical efficacy of holmium laser alone and holmium laser combined with NTrap basket in ureteroscopic lithotripsy for the treatment of upper ureteral calculi. Method:The clinic data of 106 cases(115 sides) of upper ureteral calculi treated by ureteroscope with holmium laser lithotripsy were retrospectively analyzed. These cases were divided into two groups randomly; control group (70 sides) which didn't apply NTrap basket and observation group ( 45 sides) which applied NTrap basket . The rate of calculi translocatton, success rate of

  3. 输尿管镜下气压弹道碎石术治疗复杂性输尿管结石影响因素分析%Influencing factors analysis of ureteroscopic pneumatic ballistic lithotripsy in the treatment of complicated ureteral calculi

    Institute of Scientific and Technical Information of China (English)

    左泽平; 方军; 宇洪涛; 钱俊杰; 朱金海

    2015-01-01

    Objective To investigate the influencing factors of ureteroscopic pneumatic ballistic lithotripsy ( URSL) in the treatment of complicated ureteral calculi. Methods From June 2009 to July 2013, clinical data of 132 cases with complicated ureteral calculi at Tongling People’s Hospital were retrospectively analyzed. Among them, the successful operation for 111 cases as group A and 21 failed cases as group B , test was used to investigate the effect of treatment and influencing factors of patients in two groups. Results When the course of disease was more than 8 weeks, incarceration stones, stone size had significant difference (all P values 8周 vs≤8周)、结石嵌顿与否、结石大小(>1.2 cm vs≤1.2 cm)等指标两组患者比较差异有统计学意义(P值均<0.05),是影响URSL治疗输尿管结石疗效的主要因素。结论病程长、结石嵌顿、结石较大等因素直接影响URSL的效果;采取有效的干预措施,可减少输尿管镜碎石术的失败比例。

  4. Research of perioperative nursing for upper urinary tract calculi treated by C-arm X-ray guided ;percutaneous nephroscope and ureteroscope%C型臂X线定位经皮肾输尿管镜治疗上尿路结石的围手术期护理研究

    Institute of Scientific and Technical Information of China (English)

    潘萍; 李燕玲

    2015-01-01

    目的:研究C型臂X线定位经皮肾输尿管镜治疗上尿路结石的围手术期护理。方法50例上尿路结石患者,采用随机数字表法分为护理组与对照组,各25例。两组患者均采取X线定位下经皮肾镜、输尿管镜治疗上尿路结石,对照组患者采取临床基础护理措施,护理组患者在对照组护理基础上进行综合护理干预,比较两组各项临床指标。结果护理组患者手术用时、住院时间、术后并发症发生率均低于对照组(P<0.05);一次性结石清除率高于对照组(P<0.05)。结论对于C型臂X线定位经皮肾镜、输尿管镜治疗上尿路结石手术患者采取综合护理干预可显著提高患者一次性结石清除率,有助于降低术中、术后疼痛情况及手术并发症,具有临床应用及推广价值。%Objective To research perioperative nursing for upper urinary tract calculi treated by C-arm X-ray guided percutaneous renal ureteroscope. Methods A total of 50 upper urinary tract calculi patients were divided by random number table into nursing group and control group, with 25 cases in each group. Both groups received C-arm X-ray guided p percutaneous nephroscope and ureteroscope for treatment. The control group received basic clinical nursing measures, and the nursing group received additional comprehensive nursing intervention. Clinical indexes of the two groups were compared. Results The nursing group had all lower operation time, hospital stay, and incidence of postoperative complications than the control group (P<0.05), and it had higher one-time calculi clearance rate than the control group (P<0.05). Conclusion Implement of comprehensive intervention for upper urinary tract calculi treated by C-arm X-ray guided percutaneous renal ureteroscope can remarkably improve one-time calculi clearance rate, and it is helpful to reducing intraoperative and postoperative pain and postoperative complications. This method contains value of

  5. Comparison of two minimally invasive procedures for upper ureteral calculi in solitary kidney%两种微创术治疗孤立肾输尿管上段结石的比较

    Institute of Scientific and Technical Information of China (English)

    段有军; 曹友汉; 李解方

    2011-01-01

    [Objective] To evaluate the effect of minimally invasive percutaneous nephrolithotomy and retroperi-toneal laparoscopic ureterolithotomy for the treatment of upper ureteral calculus in solitary kidney. [Methods] 45 patients with upper ureteral calculi enrolled in the study (29 cases were treated with MPCNL and 16 cases with RLUL) were compared to two sets of bleeding, postoperative fever rates (>38.5t), postoperative bed time, total number of days after surgery. [ Results ] All operations were successful, the bleeding loss of MPCNL group was about (120±50)Ml, high fever (37.9%), bed time and total number of days are (5.0±1.5) and (7.0±3.5)d respective. Correspondence of RLUL group are (60±20) Ml, 6.2%, (1.5±1.5) and (4.0±1.3)d, showing statistically significant differences between group (P<0.05). [Conclusion] The RLUL have a high success rate and is a safe and effective way for the treatment of upper ureteral calculus.%目的 比较微造瘘经皮肾镜取石术( MPCNL)与后腹腔镜取石术(RLUL)在治疗孤立肾输尿管上段结石的临床价值.方法 回顾分析该院45例微创术治疗孤立肾输尿管上段结石的临床资料.其中,MPCNL组29例,RLUL组16例,对比两组出血量、术后高热率(>38.5℃)、术后下床时间、住院总天数.结果 45例手术全部成功.MPCNL组出血量(120±50)mL、术后高热率(37.9%)、术后下床时间(5.0±1.5)d、住院总天数(7.0±3.5)d.RLUL组出血量(60±20)mL、术后高热率(6.2%)、术后下床时间(1.5±1.5)d、住院总天数(4.0±1.3)d.组间比较差异均有显著性(P<0.05).结论治疗孤立肾输尿管上段结石RLUL术较MPCNL术更安全、有效.

  6. Management experience of acute renal failure induced by unilateral ureteral calculi obstruction%一侧输尿管结石梗阻致急性肾功能衰竭的治疗经验

    Institute of Scientific and Technical Information of China (English)

    谭付清; 沈柏华; 谢立平; 孟宏舟; 方丹波; 汪超军

    2013-01-01

    Objective To explore the causes and treatment options of acute renal failure induced by unilateral ureteral calculi obstruction.Methods The clinical data of 12 cases of acute renal failure induced by unilateral ureteral calculi obstruction between August 2008 and July 2012 were reviewed retrospectively.There were 5 males and 7 females with an average age of 65.7 years.Their clinical data and treatment options were retrospectively analyzed and summarized.Seven cases showed right side ureteral calculus with hydronephrosis while another 5 presented left side ureteral calculus with hydronephrosis.Serum creatinine was higher than 310 μmol/L in 12 cases.Anuria appeared in 4 cases for 1-7 days while oliguria in 8 cases for 2-10 days.High fever was present in 11 cases,the highest of whom was 40 ℃.White blood cell count increased in 10 cases (> 10 × 109/L) and decreased in 2 cases (<4 × 109/L).Results The therapeutic options included insertion of double J stent for internal drainage (n =1),percutaneous nephrostomy for external drainage (n =10) and open operation (n =1).Traditional treatments were performed to manage ureteral calculus in the above 11 cases with drainage.All cases had improved renal function after comprehensive treatment of anti-infection,antishock,rinsing stones and relieving obstruction.All 12 cases were treated successfully.Conclusions Unilateral ureteral calculus may impair contralateral renal function and cause acute renal failure due to the absorption of toxin at obstructive side.The keys of management are eliminating toxin and relieving obstruction.%目的 总结一侧输尿管结石梗阻继发急性肾功能衰竭的原因及治疗经验,提高诊治的及时性.方法 回顾性分析了浙江大学附属第一医院2008年8月至2012年7月诊治的一侧输尿管结石梗阻继发急性肾功能衰竭12例患者的临床资料,探讨其发病原因、治疗措施及转归.12例患者中,男5例,女7例,平均年龄65.7岁.其中,右

  7. 气压弹道碎石联合肾盂切开取石治疗复杂性肾结石(附14例报告)%Pneumatic lithotripsy combined with pyelolithotomy in treatment of complex renal calculi:A report of 14 cases

    Institute of Scientific and Technical Information of China (English)

    王国桥; 樊松强

    2013-01-01

    Objective:To evaluate the clinical value of pneumatic lithotripsy combined with pyelolithotomy in treatment of complex re -nal calculi .Methods:14 cases of patients with kidney stones cut the complexity of the renal pelvis exposed stone , stone exposure , with Switzerland EMS pressure ballistic hammer apparatus , end through the handle is connected in air compressor , need not ureteroscopy , with gravel TanGan pointed directly at stone , start pressure pump , will shatter stone , the out of the renal pelvis or washed away .Results:14 patients successfully gravel succeed , operation time 100 ~180 min.Postoperative residual small stones in 8 cases, ESWL, postures row by stone, drug row stone, 6 cases of education, no secondary bleeding and urinary leak happened .Follow-up of 3 ~6 months, fourteen patients review urinary radiographs and vein urinary imaging , the original hydronephrosis obvious subsidise , creatinine unusual person were improved obviously improved .Conclusion:Pneumatic lithotripsy combined with pyelolithotomy in treatment of complex renal calculi could effectively treat complex renal calculi and minimize renal injury .%目的:本文探讨气压弹道碎石联合肾盂切开取石治疗复杂性肾结石的疗效。方法:对14例复杂性肾结石患者采用肾盂切开联合瑞士EMS气压弹道碎石机气压弹道碎石治疗复杂性肾结石。结果:手术时间100~180分钟。术后残余小结石8例,经ESWL、体位排石、药物排石,6例排出,无继发性出血及尿漏发生。术后随访3~6个月,14例复查尿路平片+静脉尿路造影、泌尿系彩超,原有6例轻度肾积水患者肾积水消失,7例中度肾积水患者中有5例明显消退,1例血肌酐异常者较术前明显改善。结论:气压弹道碎石联合肾盂切开取石具有操作简便、结石取尽率高、肾功能损伤小、术中出血少等优点。

  8. 孕期输尿管结石并肾绞痛的输尿管镜腔内置双J管疗效分析%Treatment of renal colic complicated with ureteral calculi by ureteroscope double-J stent insertion dur-ing pregnancy

    Institute of Scientific and Technical Information of China (English)

    罗建斌; 陈国强; 张闽杰; 曾智辉

    2014-01-01

    目的:评估输尿管镜腔内置双 J 管术治疗孕期输尿管结石并肾绞痛的疗效及安全性。方法对58例经保守治疗无效的孕期输尿管结石并肾绞痛患者行输尿管镜腔内置双 J 管术,观察手术疗效及安全性。结果所有患者置入双 J 管后肾绞痛症状均缓解;58例双 J 管留置时间3~8个月,术后复查泌尿系彩色多普勒超声检查发现结石自行排出后拔除双 J 管14例;留置双 J 管至分娩后1个月行输尿管镜碎石取石术26例、行体外震波碎石术18例。58例均顺利足月分娩,新生儿均健康,无因肾绞痛而发生流产、早产等不良事件。结论输尿管镜腔内置双 J 管术治疗孕期输尿管结石并肾绞痛疗效好,且安全。%Objective To evaluate the efficacy and safety of double-J stent insertion in treatment of persistent renal colic in pregnant women with ureteral calculi.Methods Fifty-eight pregnant women with per-sistent renal colic who were failed in antispasmodics and analgesics therapy due to ureteral calculi underwent double-J stent placement.The efficacy and safety were evaluated.Results Renal colic was alleviated after double-J stent insertion in all patients.The indwelling time of double-J stent ranged from 3 to 8 months.In 1 4 cases,ureteral stones were discharged spontaneously and then double-J stents were removed.At one month af-ter delivery,ureteroscopy and holmium laser lithotripsy were performed in 26 patients and extracorporeal shock wave lithotripsy was conducted in 1 8 cases.All patients had normal delivery and gave birth to healthy infants.Conclusions Ureteroscope double-J stent insertion is a safe and efficacious treatment of refractory renal colic complicated with ureteral calculi during pregnancy.

  9. 急性肾绞痛患者B超联合腹部X线平片与平扫CT诊断尿路结石的比较研究%Comparison between ultrasonography with plain abdominal radiography and unenhanced computed tomography in the diagnosis of urinary calculi with renal colic

    Institute of Scientific and Technical Information of China (English)

    曾筱江; 刘丽华; 涂响安

    2013-01-01

    Objective:To compare the effect between ultrasonography and plain abdominal radiography with unenhanced computed tomography ( CT) for the diagnosis of urinary calculi in patients with renal colic . Methods; Sixty-iiine patients with renal colic were diagnosed with ultrasonography ; plain abdominal radiography and unenhanced computed tomography. The findings of two methods were compared. Results: 59 of 69 patients were confirmed to have urinary calculi by follow -up. Ultrasonography with plain abdominal radiography detected 44 of the 59 patients with calculi (sensitivity 74. 6% and specificity 100% ). Unenhanced CT detected 55 of 59 patients, (sensitivity 93. 2% and specificity 100% ). Sensitivity of the two methods is of statistical differences in the diagnosis of acute renal colic urolithiasis patients. Conclusion: Unenhanced CT is more sensitive for detecting urolithiasis than ultrasonography with plain abdominal radiography.%目的:比较B超联合腹部X线平片(KUB)和平扫CT在诊断急性肾绞痛患者尿路结石的效能.方法:对69例因急性肾绞痛在我院泌尿外科门诊或者急诊的患者进行B超联合KUB和平扫CT检查,并对两种诊断方法的诊断效能进行对比研究.结果:经过3个月的随访,69例中确诊患有尿路结石59例.B超联合KUB诊断急性肾绞痛患者尿路结石的敏感度为74.6%(44/59),特异度为100%(10/10).CT平扫诊断急性肾绞痛患者尿路结石的敏感度为93.2%(55/59),特异度为100%(10/10).两种影像学方法诊断急性肾绞痛患者尿路结石的敏感度比较差异有统计学意义(P<0.05).结论:平扫CT用于诊断急性肾绞痛患者尿路结石的敏感度优于B超联合KUB.

  10. The reliability and clinical efficiency of modular flexible ureteroscope combined with U100 plus laser lithotripsy for treatment of upper urinary tract calculi%组合式输尿管软镜联合 U100plus激光治疗上尿路结石临床疗效及安全性分析

    Institute of Scientific and Technical Information of China (English)

    张鹏; 种铁; 杨小杰; 薛玉泉; 李和程; 李洪亮; 秦博; 王莉

    2015-01-01

    目的:探讨组合式输尿管软镜联合U100plus激光治疗上尿路结石的临床疗效及安全性。方法:应用组合式输尿管软镜联合U100plus激光治疗上尿路结石120例,记录手术时间、术中出血量等指标,观察并发症发生情况,计算单次碎石成功率,术后3月计算结石排净率。结果:单次碎石成功率88.3%,其中肾下盏结石单次碎石成功率66.7%,比其他部位单次碎石成功率低,具有统计学意义。手术时间47.7±30.5min ,术后血红蛋白下降1.7±1.5g/L ,11例患者出现发热,抗感染治疗后好转,未出现其他严重并发症。术后3月复查,结石排净率94.7%。结论:组合式输尿管软镜联合U100plus激光治疗直径<2cm的上尿路结石是一种高效、安全的治疗方法。在降低部分操作性能的同时,降低了维护、使用成本,节约了维修成本及时间,为初次开展及经费紧张医院开展输尿管软镜技术提供了方便。%Objective:To evaluate the reliability and clinical efficiency of modular flexible ureteroscope combined with U100 plus laser lithotripsy for treatment of upper urinary tract calculi .Methods:A total of 120 cases with upper urinary tract calculi were treated with modular flexible ureteroscope combined with U100 plus laser litho‐tripsy in our department .Record the index with operation time ,hemorrhage volume ,etc .Observe the complication during and after the operation .Calculate the success rate of the single lithotripsy .Account the stone free rate 3 months after the operation .Results :The stone free rate was 88 .3% after one lithotripsy in these 120 cases .The single lithotripsy success rate of the lower calyx calculi was 66 .7% ,which is obviously lower than the other locations single lithotripsy success rate .The mean operation time was 47 .7 ± 30 .5min ,the average hemoglobin decreased 1 .7 ± 1 .5g/L after operation .11 patients had got fever

  11. Contrast Research on treatment of Ureteral Calculi with retroperitoneoscopic ureterlithotomy and Ureteroscopic Pneumatic lithotripsy%后腹腔镜与输尿管镜气压弹道碎石治疗输尿管上段结石的对比研究

    Institute of Scientific and Technical Information of China (English)

    李育斌; 高兴成; 黄伟佳; 刘平

    2011-01-01

    Objective To discuss the effect comparison of treating ureteral calculi by retroperitoneoscopic ureterlithotomy and ureteroscopic pneumatic lithotripsy. Methods Adopt retroperitoneoscopic ureterlithotomy for the treatment of ureteral calculi ( Group A ), Ureteroscopic Pneumatic lithotripsy for the treatment of ureteral calculi( Group B ) for 21 cases and 38 cases, respectively,to review and analyses the stone clearance rate and complication incidence of the above two treatments.Results Group A's stone clearance rate is 95.2% ( 20/21 ), while Group B is 68.4% ( 26/38 ), twosets of compartment make difference ( x 2= 4.21, P < 0.05 ) possess statistics sense; A group complication incidence for 9.5% ( 2 / 21 ), B group for 10.5% ( 4 / 38 ), two-sets of compartment without significant difference ( x 2= 0.11, P > 0.05 ). Conclusions Laparoscopic ureterolithotomy is supposed to be a feasible and safely technique in ureteric calculus treatment,as this treatment cause minor trauma, patients can recover rapidly, and the rate for clearing stone is relatively high; while Ureteroscopic Pneumatic lithotripsy for the treatment of ureteral calculi is with low stone clearance rate and exsits the complication indicence of Ureter remove.%目的 探讨后腹腔镜与输尿管镜气压弹道碎石治疗输尿管上段结石的效果对比。方法 分别用后腹腔镜下输尿管切开取石术(A组)、输尿管镜气压弹道碎石术(B组)治疗输尿管上段结石21例、38例,回顾分析两种方法 的结石清除率、并发症发生率。结果 A组结石清除率为95.2%( 20/21),B组为68.4%( 26/38),两组之间有差异(x 2=4.21,p<0.05)具有统计学意义;A组并发症发生率为9.5%( 2/21),B组为10.5%( 4/38),两组之间无显著性差异(x 2=0.11,P> 0.05)。结论 后腹腔镜下输尿管切开取石术是一种创伤小、恢复快、结石清除率高、安全有效的外科微创技术,在治疗输尿管上段结

  12. 应用拦石网输尿管镜下钬激光碎石术治疗输尿管上段结石%Treatment of upper ureteral calculi with intercept stone network combined with holmium: YAG laser lithotripsy under ureteroscopy

    Institute of Scientific and Technical Information of China (English)

    孟令超; 杨嗣星

    2011-01-01

    Objectives To evaluate the effectiveness of the treatment of upper ureteral calculi with intercept stone network combined with holmium: YAG lithotripsy under ureteroscopy. Methods We retrospectively reviewed the data of 58 patients(36 males and 22 females,with an average age of 47.2 years) with upper ureteral calculi, who were treated with intercept stone network combined with holmium: YAG laser lithotripsy under ureteroscopy.The width of calculus ranges from 3 to 23 mm,and the length 3 to 25 mm. Results The success rate of fragmenta tion in a single procedure was 93.1 % (54/58 ). The calculi retrograded to renal in 2 cases. 1 case converted to open surgery because the upper ureter twisted. Operations in 1 case had to be changed to PCNL, because the zebra urological guidewire can not reach the upper ureter. The operation time was 25~90 min,and the mean operative time was 37.4 min. The postoperative hospital stay was 3~11 d,and the mean postoperative hospital stay was 4.7 d. Only 2cases had urinary infection. No severe complications such as ureteral perforation were seen in this operation. Conclusions The treatment of upper ureteral calculi with intercept stone network combined with holmium laser lithotripsy under ureteroscopy is safe and effective, and the intercept stone network is an effective tool that blocks the upward movement of the stone and aids in safe stone removal. This therapeutic method and tool are worth recommending in clinical practice.%目的 探讨应用拦石网输尿管镜下钬激光碎石术治疗输尿管上段结石的临床疗效.方法 回顾性分析输尿管镜下拦石网配合钬激光碎石术治疗58例输尿管上段结石患者的临床资料.男36例,女22例,平均47.2岁.结石横径为3~23 mm,纵径为3~25mm.结果 本组单次碎石成功率93.1%(54/58).2例结石上移入肾内,1例因输尿管上段迂曲而改行输尿管切开取石术,1例因斑马导丝无法进入输尿管上段而改为经皮肾镜钬激

  13. 结石成分分析护理模式在预防尿路结石复发中的应用%Application of the nursing model based on calculi composition analysis in the prevention of recurrence of lithangiuria

    Institute of Scientific and Technical Information of China (English)

    郑岚鹏; 阮定萍; 孙明; 陈爱文; 王玉新; 张澍; 梁丽英; 石宏燕

    2015-01-01

    目的:探讨结石成分分析护理模式在预防尿路结石复发中的应用效果。方法:将788例上尿路结石患者按随机数字表法分为干预组和对照组各394例,对照组采取常规护理措施,干预组在对照组基础上根据结石分析结果进行健康教育和针对性护理。比较两组患者近、远期结石复发率和患者健康知识依从性。结果:与对照组比较,干预组患者3、6个月近期复发率和1、2年远期复发率均降低,两组比较差异有统计学意义( P <0.05);干预组患者健康知识依从性明显高于对照组( P <0.05)。结论:结石成分分析护理模式可有效降低尿路结石的近、远期复发率,提高患者依从性,使患者更积极地配合结石复发的预防。%Objective:To investigate the effect of the nursing model based on calculi composition analysis in the prevention of recur-rence of lithangiuria. Methods:788 patients with upper urinary tract calculi were randomly divided into the intervention group and the control group(394 cases in each group). The routine nursing measures were taken in the control group and the targeted health education and nursing measures were implemented in the intervention group according to the result of calculi analysis. The recent and forward re-currence rate of the disease and patient compliance of health education were compared between the two groups. Results:Compared with the control group,the recent recurrence rate of 3 and 6 months and the forward recurrence rate of one and 2 years decreased in the inter-vention group and the difference between the two groups was statistically significant(P < 0. 05);the patient compliance of health educa-tion was significantly higher in the intervention group than the control group(P < 0. 05). Conclusion:The nursing model based on calcu-li composition analysis can reduce the recurrence rate of urinary tract stones and improve patient compliance as well.

  14. Double J Tube in the Treatment of Stubborn Ureteral Calculi and Renal Colic During Pregnancy%双J管置入治疗孕期顽固性输尿管结石并肾绞痛的临床体会

    Institute of Scientific and Technical Information of China (English)

    罗云伟

    2015-01-01

    ObjectiveTo observe the double J tube in treatment of intractable chronic ureteral calculi during pregnancy and the clinical treatment effect of renal colic.Methods Between January 2013 to May 2015, after invalid conservative treatment of intractable chronic ureteral calculi during pregnancy and 38 cases of renal colic patients with double J tube for treatment,then observed the clinical therapeutic effect of patients.ResultsAl patients were successfuly completed ureteral lumen built-in double J tube,the operation time was in 5 to 10 min,and pregnant women and fetus was in good condition in the operation. Renal colic symptoms had eased significantly. Patients discharged from hospital after color doppler ultrasound examination, according to the results,38 patients with double J tube indweling time was between 3 to 5 month. By color doppler ultrasound examination revealed calculi by itself after extubation in 9 cases,indweling double J tube to 1 month after giving birth to a line of ureteroscopy rubble nephrolithotomy in 16 cases,lines of extracorporeal shock wave lithotripsy in 13 cases. After examination showed that al fetal condition were good,no adverse events such as abortion happened.Conclusion Double J tube placement therapy during pregnancy with refractory ureteral calculi and renal colic,the treatment effect is remarkable,safe and reliable.%目的:观察双J管置入治疗孕期顽固性输尿管结石并肾绞痛的临床治疗效果。方法选取2013年1月~2015年5月在我院经保守治疗无效的孕期顽固性输尿管结石并肾绞痛的38例患者行双J管置入治疗,观察患者的临床治疗效果。结果所有患者均顺利完成输尿管镜腔内置双J管术,手术时间在5~10 min,手术中孕妇和胎儿状况良好,肾绞痛症状有缓解。患者出院后行泌尿系统彩超检查,结果显示,38例患者双J管留置时间在3~5个月,通过彩超检查发现结石自行排出后拔管的有9

  15. Unenhanced spiral CT localization combined with C-arm in minimally invasive percutaneous nephrolithotomy(MPCNL) for complex renal calculi%非增强螺旋CT定位联合C臂微创经皮肾镜取石治疗复杂肾结石

    Institute of Scientific and Technical Information of China (English)

    蒋立城; 徐忠华; 张英晨; 王学廷; 丁吉阳; 程玉峰

    2012-01-01

    Objective To investigate the value of non-contrast-enhanced spiral CT-assistant localization combined with C-arm in the treatment of complex renal calculi by minimally invasive percutaneous nephrolithotomy ( mPCNL). Methods 50 patients with complex renal calculi underwent a non-contrast-enhanced spiral CT scan localization to simulate intraoperative posture before the operation and accepted the mPCNL treatment combined with C-arm (CT group). Another 38 patients with complex renal calculi who directly underwent puncture by C-arm localization were studied as the control group (C-arm group). Results In the CT group, the average number of punctures [(1.27 ±0.56) per side vs (2.28 ±1.19) punctures per side, P<0.01 ], channel building time[ (5.51 ±2.31)minutes per side vs (11.36 ± 6.15) minutes per side, P<0.01], C-arm usage counter[ (2.53 ±0. 77) vs (7.44 ± 1. 87), P <0.01 ] ,and X-ray exposure time for surgeons[ (0.32 ±0.73) minutes per side vs (0.53 ±0.28)minutes per side, P<0.05] and patients [ (0.43 ± 0.72) minutes per side vs (0.72 ± 0. 28) minutes per side, P < 0.01 ] were significantly lower than those of the C-arm group. Conclusion Non-contrast-enhanced spiral CT localization combined with C-arm can contribute to percutaneous renal puncture in the complex renal calculi treatment by m-PCNL, and effectively reduce the C-arm usage counter and intraoperative radiation exposure time.%目的 探讨非增强螺旋CT定位联合C型臂在复杂肾结石微创治疗中的应用价值.方法 对50例复杂肾结石患者术前模拟术中体位行螺旋CT扫描定位(CT组),术中联合C臂行微创经皮肾镜取石术,并与同期38例复杂肾结石直接C臂定位者(C臂组)进行比较.结果 CT组与C臂组比较,平均穿刺次数[(1.27±0.56)次/侧vs (2.28±1.19)次/侧,P<0.01]、通道建立时间[(5.51±2.31 )min/侧vs (11.36±6.15) min/侧,P<0.01]、C臂使用次数[(2.53±0.77)次/侧vs (7.44±1.87)次/侧,P<0.01]及医生

  16. The clinical analysis of the treatment of upper ureteric calculi by ureteroscopic holmium laser lithotripsy combined with ureteral block calculus extraction catheter%输尿管镜下钬激光碎石术配合封堵取石导管治疗上段结石的临床分析

    Institute of Scientific and Technical Information of China (English)

    李鹏; 蒋晓明

    2014-01-01

    Objectives To explore the clinical effect of the treatment of upper ureteric calculi by ureteroscopic holmium laser lithotripsy combined with ureteral block calculus extraction catheter.Methods Retrospectively analyzed the clinical data of the patients of upper ureteric calculi (23 cases) treated by ureteroscopic holmium laser lithotripsy combined with ureteral block calculus extraction catheter in the first half of this year.There were 6 cases with the calculi at the level of L2,9 at the level of L3,8 at the level of L4.The size varied from (0.7cm * 1.1 cm) to (1.4cm * 1.8cm),with the average of 1.0cm * 1.4cm.Results 22 out of the 23 cases were successfully implanted with uteroscope and block calculus extraction catheter at the first attempt,with the 95.7% successful rate of lithotripsy at first attempt.The operation time was from 15 to 45 minutes,with the average of 25 ± 10 minutes.Postoperative hospital stay was from 1 to 4 days,with the average of 2.5 ± 1.0 days.1 case of the calculi moved up into the kidney and was successfully expelled by indwelling D-J tube in operation and employing extracorporeal shock wave lithotripsy (ESWL) after operation.All the cases were with little hemorrhage,no complications of perforation,mucosal antrectomy,etc.No patient had fever or bacteremia after operation.No remained calculi found in reexamination by abdominal plain films and ultrasonography in urology 3 to 4 weeks after operation.Conclusions It is a safe and effective method to treat the upper ureteric calculi by ureteroscopic holmium laser lithotripsy combined with ureteral block calculus extraction catheter.Ureteral block calculus extraction catheter is a safe and effective tool,which can significantly reduce the calculus shift in ureterscopic lithotripsy,enhance the successful rate of lithotripsy at first attempt,and shorten the time of operation and hospital stay,thus to reduce the hospitalization expenses.It could also avoid the expensive price of flexible

  17. 输尿管管路封堵器在防止输尿管中上段结石上移应用的体会%The Application of Ureteral Occlusion Devive in Preventing Moving up of Middle and Upper Ureteral Calculi Ureteral

    Institute of Scientific and Technical Information of China (English)

    於佶; 罗成斌; 刘小平

    2013-01-01

    Objective:To explore the clinical application of ureteral occlusion devive in prevention of moving up of middle of upper ureteral calculi ureteral. Method:From December 2011 to December 2012 62 cases of unilateral middle and upper ureteral calculi with ureteroscopic working channel was arranged in the Yingnuowei TMIVX-SC10 ureteral occlusion devive,completely beyond calculus after operation in vitro,handle to blade folding to prevent movement of calculus, and then using the holmium:YAG laser lithotripsy or ballistic lithotripsy,after the completion of the blade in the rubble stone fragments from ureter folded cavity. D-J tube indwelling ureter stenosis patients without stricture of ureter catheter 4 weeks,patients with stricture of ureter catheter for eight weeks.Result:5 cases of upper ureteral calculi ureteral stones in the placement of pipeline occluder when moved to the ipsilateral renal calyx with D-J indwelling tube,carried out the extracorporeal shock wave lithotripsy postoperative,the effect was satisfaction.Residual ureteral calculi patients were occluded satisfaction,there were no patients with ureteral perforation or ureteral mucosa avulsion.There were no postoperative patients with high fever,bacteremia,renal failure.After D-J tube removal of abdominal plain film,except for 5 cases of calculus into a calculus patients with extracorporeal lithotripsy kidney in the light of not emptying,more than 57 cases of no residual stones.Conclusion:Ureteral occlusion devive can significantly reduce the ureteral calculi ureteral calculi lithotripsy up,improve the stone clearance rate,reduce the two operation or follow-up treatment,the operation is simple,is worthy of clinical application.%目的::探讨输尿管管路封堵器在防止输尿管中上段结石上移应用的临床疗效。方法:2011年12月-2012年12月,对62例单侧输尿管中上段结石患者于输尿管镜工作通道内安置英诺伟TMIVX-SC10输尿管管路封堵器,完全超越

  18. Enriched MU-Calculi Module Checking

    CERN Document Server

    Ferrante, Alessandro; Parente, Mimmo

    2008-01-01

    The model checking problem for open systems has been intensively studied in the literature, for both finite-state (module checking) and infinite-state (pushdown module checking) systems, with respect to Ctl and Ctl*. In this paper, we further investigate this problem with respect to the Mu-calculus enriched with nominals and graded modalities (hybrid graded Mu-calculus), in both the finite-state and infinite-state settings. Using an automata-theoretic approach, we show that hybrid graded Mu-calculus module checking is solvable in exponential time, while hybrid graded Mu-calculus pushdown module checking is solvable in double-exponential time. These results are also tight since they match the known lower bounds for Ctl. We also investigate the module checking problem with respect to the hybrid graded Mu-calculus enriched with inverse programs (Fully enriched Mu-calculus): by showing a reduction from the domino problem, we show its undecidability. We conclude with a short overview of the model checking problem ...

  19. The Complexity of Enriched Mu-Calculi

    CERN Document Server

    Bonatti, Piero A; Murano, Aniello; Vardi, Moshe Y

    2008-01-01

    The fully enriched mu-calculus is the extension of the propositional mu-calculus with inverse programs, graded modalities, and nominals. While satisfiability in several expressive fragments of the fully enriched mu-calculus is known to be decidable and ExpTime-complete, it has recently been proved that the full calculus is undecidable. In this paper, we study the fragments of the fully enriched mu-calculus that are obtained by dropping at least one of the additional constructs. We show that, in all fragments obtained in this way, satisfiability is decidable and ExpTime-complete. Thus, we identify a family of decidable logics that are maximal (and incomparable) in expressive power. Our results are obtained by introducing two new automata models, showing that their emptiness problems are ExpTime-complete, and then reducing satisfiability in the relevant logics to these problems. The automata models we introduce are two-way graded alternating parity automata over infinite trees (2GAPTs) and fully enriched automa...

  20. [Tonsil calculi in the orthopantomography image].

    Science.gov (United States)

    Crameri, Manuel; Bassetti, Renzo; Werder, Peter; Kuttenberger, Johannes

    2016-01-01

    Tonsilloliths are calcifications within the tonsillar crypts. Affected are especially the palatine tonsils. The prevalence is ranging between 16 and 46.1%. Tonsilloliths can be the reason for chronic halitosis, irritating cough, dysphagia, otalgia, foreign body sensation or foul taste in the mouth. They are often asymptomatic. Tonsilloliths can be discovered incidentally in orthopantomography (OPT) as singular or multiple radioopacities in the area of the ramus mandibulae. The aim of this case report is to present two cases with asymptomatic tonsilloliths detected based on an OPT and confirmed in a computed tomography (CT) or by magnetic resonance imaging (MRI). PMID:26797801

  1. Languages, Algorithms, Procedures, Calculi, and Metalogic

    OpenAIRE

    Burgin, Mark

    2007-01-01

    Logicians study and apply a multiplicity of various logical systems. Consequently, there is necessity to build foundations and common grounds for all these systems. This is done in metalogic. Like metamathematics studies formalized mathematical theories, metalogic studies theories in logic, or logics. The discipline of logic has been developed with the aim to model and study human thinking and reasoning. A more realistic understanding relates logic only to reasoning. Reasoning is a mental and...

  2. Formalization of malware through process calculi

    CERN Document Server

    Jacob, Gregoire; Debar, Herve

    2009-01-01

    Since the seminal work from F. Cohen in the eighties, abstract virology has seen the apparition of successive viral models, all based on Turing-equivalent formalisms. But considering recent malware such as rootkits or k-ary codes, these viral models only partially cover these evolved threats. The problem is that Turing-equivalent models do not support interactive computations. New models have thus appeared, offering support for these evolved malware, but loosing the unified approach in the way. This article provides a basis for a unified malware model founded on process algebras and in particular the Join-Calculus. In terms of expressiveness, the new model supports the fundamental definitions based on self-replication and adds support for interactions, concurrency and non-termination allows the definition of more complex behaviors. Evolved malware such as rootkits can now be thoroughly modeled. In terms of detection and prevention, the fundamental results of undecidability and isolation still hold. However th...

  3. Programs for the calculi of blocks permeabilities

    International Nuclear Information System (INIS)

    This report studies the stochastic analysis of radionuclide transport. The permeability values of blocks are necessary to do a numeric model for the flux and transport problems in ground soils. The determination of block value by function on grill value is the objective of this program

  4. Comparing the orthogonal and homotopy functor calculi

    OpenAIRE

    Barnes, David; Eldred, Rosona

    2015-01-01

    Goodwillie's homotopy functor calculus constructs a Taylor tower of approximations to F, often a functor from spaces to spaces. Weiss's orthogonal calculus provides a Taylor tower for functors from vector spaces to spaces. In particular, there is a Weiss tower associated to the functor which sends a vector space V to F evaluated at the one-point compactification of V. In this paper, we give a comparison of these two towers and show that when F is analytic the towers agree up to weak equivalen...

  5. Dichotomy and H^infinity functional calculi

    Directory of Open Access Journals (Sweden)

    R. DeLaubenfels

    1995-09-01

    Full Text Available densely defined closed operator on a Banach space is studied. We give conditions under which an operator with an $H^infty$ functional calculus has dichotomy. For the operators with imaginary axis contained in the resolvent set and with polynomial growth of the resolvent along the axis we prove the existence of dichotomy on subspaces and superspaces. Applications to the dichotomy of operators on $L_p$-spaces are given. The principle of linearized instability for nonlinear equations is proved.

  6. Clinical comparison of therapeutic methods for calculi in congenital anomalous kidneys%先天性异常肾合并结石的临床治疗方法比较

    Institute of Scientific and Technical Information of China (English)

    王文卫; 涂响安; 何朝辉; 瞿虎; 曾国华; 陈凌武

    2009-01-01

    Objective To evaluate the therapeutic methods for stones in congenital anomalous kidneys. Methods The clinical outcomes of 126 patients(75 males and 51 females: mean age 39 years, range 12-66 years)who underwent extracorporeal shock wave lithotripsy (ESWL, n= 37), minimally invasive percutaneous nephrolithotomy (MPCNL, n = 41) or open surgery (n = 48) were retrospectively reviewed. There were 40 horseshoe kidneys(31.8%), 51 duplex kidneys(40.5%), 35 malrotated kidneys(27.8%). Seventyl calculi were located in left kidneys(55.6%)and 56 in right kid-neys(44.4%). There were 96 single stones(76.2%)and 30 complex stones(23.8%). The greatest di-ameter of stone ranged from0.8 cm to 2.2 cm(mean 1.5 cm) in ESWL group, 1.0 cm to 4.0 cm (mean 2.5 cm) in MPCNL group and 1.5 cm to 3.8 cm(mean 2.7 cm) in open surgery group. The therapeutic effects of 3 methods were compared. Results The stone-free rate at 1 session was 78.4%(29/31) in ESWL group, 85.4%(35/41) in MPCNL group and 87.5%(42/48) in open sur-gery group. No significant difference was found among the 3 groups(x2 = 1.39,P=0.50). The inci-dence of complications was 13.5% in ESWL group, 9.7% in MPCNL group and 6.3% in open sur-gery group(x2=1.28, P=0.53). Only 1 case of malrotated kidney suffered massive hemorrhage and was cured by selective embolism of renal artery. No major complications occurred in the other pa-tients. Conclusions With rigorous indication, ESWL or MPCNL is as safe and effective as open sur-gery in the management of stones in congenital anomalous kidneys. It should be considered as the pri-mary therapy. But the treatment must be individualized in terms of the type anomalous kidney, stone characteristics and obstruction.%目的 探讨先天性异常肾合并结石的合理治疗方法.方法 回顾性分析126例不同类型先天性异常肾合并结石的患者资料.男75例,女51例.年龄12~66岁,平均39岁.马蹄肾40例(31.8%)、重复肾51例(40.5%)、肾旋转不良35例(27.8%).

  7. Nursing adverse downstream flushing ureteroscopic ultrasound lithotripsy for treatment of ureteral calculi ;after operation%逆向顺流冲洗输尿管镜超声碎石治疗输尿管结石的术后护理

    Institute of Scientific and Technical Information of China (English)

    卞玉霞

    2014-01-01

    目的:探讨逆向顺流冲洗经输尿管镜超声碎石清石治疗输尿管结石的护理措施。方法回顾性分析我院2013年3月至2014年6月运用逆向顺流冲洗经输尿管镜超声碎石清石治疗30例输尿管结石的临床资料。术前对患者进行心理护理和术后针对并发症护理。结果30例患者经精心的护理均取得良好的临床疗效,1例结石移位,经体外碎石排出;肉眼血尿18例、术后肾绞痛4例、发热2例( T<38℃)经及时处理和针对性护理均迅速改善;双“J”管移位1例,经输尿管镜取出。无输尿管损伤及尿脓毒症等并发症发生。29例碎石清石成功,清石率96.67%。结论逆向顺流冲洗经输尿管镜超声碎石清石治疗输尿管结石清石率高,术前心理护理和术后针对并发症护理是减少并发症发生和提高手术安全性、促进术后康复的重要措施。%Objective To explore the nursing measures of reverse flow rinsing ureteroscopic ultrasound lithotripsy for the treatment of ureteral calculi .Methods Retrospective analysis of our hospital from 2013 March to 2014 June using the reverse flow rinsing clinical data of ureteroscopic ultrasound lithotripsy in treating 30 ureteral calculus .The patients psychological nursing and preoperative nursing for complications after operation . Results 30 cases of patients with careful nursing can obtain good clinical curative effect , 1 case of calculi translocation, discharged after extracorporeal lithotripsy;2 cases of hematuria , 18 cases of renal colic in 4 cases after operation , postoperative fever ( T<38℃) after timely treatment and nursing were improved rapidly;shift of 1 cases of double "J"tube, ureteroscopic removal .No ureteral injury and complications such as urinary sepsis . 29 cases of successful lithotripsy , stone clearance rate was 96.67%.Conclusions Reverse flow rinsing ureteroscopic ultrasound lithotripsy in treatment of ureteral calculi

  8. 经皮肾镜治疗在复杂性肾结石中的疗效及对应激状态的影响%Effect of percutaneous nephrolithotomy in the treatment of patients with complex renal calculi and its influence for the stress condition

    Institute of Scientific and Technical Information of China (English)

    王建平; 王海坤; 吴烈中; 肖耀军; 黄谷; 李彬; 宁小良

    2014-01-01

    目的 观察研究经皮肾镜治疗在复杂性肾结石中的疗效及对应激状态的影响.方法 选取2011年5月~2013年4月于本院进行治疗的78例复杂性肾结石患者为研究对象,将其随机分为对照组39例和观察组39例,对照组进行传统开放式手术治疗,观察组则以经皮肾镜的方式进行治疗,然后将两组患者中不同结石类型者的总有效率及治疗前、治疗后ld、3d、5d的血清机体应激指标进行比较.结果 观察组中不同结石类型者的总有效率分别高于对照组,同时治疗后1d、3d、5d的血清机体应激指标也分别低于对照组,P <0.05,均有显著性差异.结论 经皮肾镜治疗在复杂性肾结石中的疗效较好,且机体对手术的应激程度也较小.%Objectives To observe and study the effect of percutaneous nephrolithotomy in the treatment of patients with complex renal calculi and its influence for the stress condition.Methods 78 patients with complex renal calculi in our hospital from May 2011 to April 2013 were selected as research object,and they were randomly divided into control group 39 cases and observation group 39 cases,the control group were treated with traditional open operation,the observation group were treated with percutaneous nephrolithotomy operation,then the total effective rate of different calculus and serum body stress indexes before the treatment and at 1 st,3 rd and 5th day after the treatment of two groups were compared.Results The total effective rate of observation group with different calculus were higher than those of control group,serum body stress indexes at 1 st,3rd and 5th day after the treatment were respectively lower than those of control group too,all P < 0.05,there were all significant differences.Conclusions The effect of percutaneous nephrolithotomy in the treatment of patients with complex renal calculi is better,and its influence for the stress condition of body is smaller too.

  9. 微通道经皮肾镜取石术治疗上尿路结石的疗效及安全性评价(附4533例报告)%The Evaluation of Efficacy and Safety in Mini-PNL for Upper Urinary Tract Calculi(Report of 4 533 Cases)

    Institute of Scientific and Technical Information of China (English)

    李炯明; 刘建和; 陈戬; 姜永明; 张劲松; 闫永吉; 王光; 张海燕; 郭海翔

    2011-01-01

    Objective..To evaluate the safety and clinical efficacy of mini-percutaneous nephrolithotomy(mPNL) for the treatment of upper urinary tract tcalculi.Methods:4 533 patients with upper urinary tract calculi underwent mPNL from September 1999 to December 2010,including 3 434 pelvic and calyx calculi,342 partial staghorn nephrolithiasis,38 staghorn nephrolithiasis,737 impacted upper ureterolithiasis, stone size 12-103 mm.All patients were treated by the supracostal access or subcostal access mPNL, the pucture via renal papillary to the posterior renal calyx.Results: 4 528 cases(99.8%)were successful of total 4 533 patients,the operation time 30-186 min.The stone clearance rate in upper ureterolithiasis was 99.2 %, nephrolithiasis was 96.5 % ,partial staghorn nephrolithiasis was 92.3% (combined the ESWL) and staghorn nephrolithiasis was 86.2% (combined the ESWL).The complication includced blood transfusion 1.39 % ,high selective renal artery angioembolization 0.13%%, pleural effusion0.13 %, colon injury 0.110%, liquid absorption syndrome 0.110%, septic shock 0.06 %, no death and renal failure cases.Conclusions:The treatment of mPNL for upper urinary tract calculi,including partial staghorn nephrolithiasis,can receive high rate of stone clearance,high safety,and lower surgical bleeding, blood transfusion and other complications.%目的:探讨微通道经皮肾镜取石术(mPNL)治疗上尿路结石的疗效和安全性.方法:1999年9月~2010年12月应用mPNL治疗上尿路结石患者4 533例,其中肾盂及肾盏结石患者3434例,部分鹿角形肾结石患者324例,完全鹿角形肾结石患者38例,嵌顿性输尿管上段结石患者737例,结石大小12~103 mm.采用肋上或肋下人路,经肾乳头穿刺后组肾盏建立手术通道.结果:4 528例(99.8%)获得成功,手术时间30~185 min,结石清除率分别为:输尿管上段结石99.2%,肾盏或肾盂结石96.5%,部分鹿角形肾结石92.3%(

  10. 标准通道与微通道经皮肾镜治疗感染性肾结石的对比研究%A comparative study of standard percutaneous nephrolithotomy and Min - percutaneous nephrolithotomy in treatment of renal struvite calculi

    Institute of Scientific and Technical Information of China (English)

    张林林; 吴卫真; 朱李兵; 朱凌峰; 王栋; 谢星; 林若飞

    2011-01-01

    目的 研究经皮肾镜标准通道与微通道碎石术治疗感染性肾结石疗效和安全性.方法 回顾分析2006 年1 月至2010 年6月我院138例(149例次)应用经皮肾镜术治疗肾脏感染性结石患者的资料.其中采用标准通道83例次,采用微通道66例次.对两组患者结石清除率、手术时间和手术并发症等指标进行比较分析.结果 两组患者均分别成功建立24F和18F肾穿刺通道.两组清石率比较:标准通道组与微通道组Ⅰ期单通道结石清除率分别为71.08%(59/83)、48.48%(32/66),P0.05;两组术后血细菌培养阳性分别为18例、24例,P 39℃)分别为10例、13例,P>0.05.结论 标准通道经皮肾镜术具有手术时间短、清石效率高、低压灌注及感染率低,术后菌血症发生率低等优点,在处理感染性肾结石方面优于微小通道经皮肾镜术.%Objective To compare the efficacy and safety of standard percutaneous nephrolithotomy( S - PCNL) and Min - percutaneous nephrolithotomy( MI - PCNL) in the treatment of renal struvite calculi. Methods Clinical data of 138 patients with renal struvite calculi who underwent PCNL from January 2006 to June 2010 in our hospital were retrospectively analyzed. S - PCNL and MI - PCNL were performed in 83 and 66 cases respectively. Stone -free rate ,operative time and complications were compared. Results 24F and 18F percutaneous renal assess were successfully established in the S - PCNL and MI - PCNL groups respectively. The single channel stone- free rate at phase Ⅰ was 71.08% (59/83)in the S- PCNL group and 48.48% ( 32/66 ) in the MI - PCNL group with difference being significant ( P < 0. 05 ). The total stone - free rate at phase Ⅰ was 80.72% ( 67/83 ) in the S - PCNL group and 60.60% ( 40/66 ) in the MI - PCNL group(P <0.05 ). The operative time was(95 ± 16) min in the S - PCNL group and( 120 ±15 )min in the MI- PCNL group( P <0.05 ). Mean blood loss in the operation was( 136 ± 9

  11. Experience of Minimally Invasive Percutaneous Nephrolithotomy Guided by B Ultrasound and X-ray in the Treatment of Complicated Renal Calculi%B超联合X线引导定位下微创经皮肾镜治疗复杂性肾结石的体会

    Institute of Scientific and Technical Information of China (English)

    魏淑英

    2015-01-01

    目的:研究 B 超联合 X 线引导定位下微创经皮肾镜治疗复杂性肾结石的效果。方法选择2012年3月~2014年3月来我院治疗的复杂性肾结石患者166例,随机分成对照组和治疗组,每组各83例,对照组患者采用 X 线引导定位下微创经皮肾镜治疗,治疗组患者采用 B超联合 X 线引导定位下微创经皮肾镜治疗,观察两组患者的穿刺效果及手术时间、结石清除率等指标。结果治疗组患者的穿刺时间、穿刺出血量少于对照组患者,1针穿刺成功率高于对照组患者,差异具有统计学意义(P <0.05);治疗组患者的平均手术时间及住院时间少于对照组患者,结石的清除率高于对照组患者,差异具有统计学意义(P <0.05)。治疗后仅对照组患者出现2例不良情况。结论对复杂性肾结石的患者采用 B 超联合 X 线引导定位下微创经皮肾镜治疗,能有效地减少手术时间,提高治疗的成功率,并发症较少。%Objective To study the effect of minimal y invasive percutaneous endoscopic guided by ultrasound combined with X-ray guidance in the treatment of complex renal calculi. Methods From March 2012 to March 2014,166 patients with complex renal calculi were randomly divided into control group and treatment group,83 cases in each group. The control group were treated with X ray guided percutaneous endoscopic treatment. Results In the treatment group,the puncture time and bleeding volume were significantly less than those in the control group,the success rate was significantly higher than the control group,the difference was statistical y significant(P < 0.05). The average operation time and hospitalization time of the treatment group were significantly less than those of the control group,the removal rate of stone was significantly higher than that of the control group(P < 0.05).After treatment,the control group was treated with 2 cases of adverse conditions

  12. 腹腔镜胆囊切除术治疗胆囊颈部结石嵌顿并急性化脓性胆囊炎的疗效%Research on the curative effect of laparoscopic cholecystectomy in the treatment of calculi incarcerated in neck of gallbladder and acute suppurative cholecystitis

    Institute of Scientific and Technical Information of China (English)

    李文彬

    2015-01-01

    Objective:To observe the curative effect of laparoscopic cholecystectomy in the treatment of calculi incarcerated in necK of gallbladder and acute suppurative cholecystitis .Methods:80 cases of calculi incarcerated in necK of gallbladder and acute suppurative cho-lecystitis were divided into observation group and control group according to the difference in therapeutic methods ,40 cases in each group .The observation group received laparoscopic cholecystectomy ,and the control group accepted conventional open operation ,with the time of operation ,intraoperative blood loss ,the time of hospital stay and complication between the two groups compared .Results:There were significant differences in the time of operation ,intraoperative blood loss ,the time of hospitalization ,and the complication rate between the two groups .The time of operation and hospitalization in the observation group was shorter than those in the control group , and intraoperative blood loss in the former group was less than that in the latter group ( P <0 .05) .Conclusion:Laparoscopic cholecys-tectomy in the treatment of calculi incarcerated in necK of gallbladder and acute suppurative cholecystitis is of better clinical effect ,and higher treatment security ,which can help patients recover quicKly .%目的:观察腹腔镜胆囊切除术治疗胆囊颈部结石嵌顿合并急性化脓性胆囊炎的疗效.方法:80 例胆囊颈部结石嵌顿并急性化脓性胆囊炎患者 ,按照治疗方法的差异分为观察组与对照组 ,每组各40例.其中观察组患者以腹腔镜胆囊切除术进行治疗 ,对照组患者以常规开腹手术进行治疗 ,对比两组患者的手术时间、术中出血量、住院时间及并发症等. 结果:两组患者在手术时间、术中出血量、住院时间、并发症发生率等指标上比较 ,差异有统计学意义 ,观察组患者的手术时间、住院时间均短于对照组 ,术中出血量也少于对照组( P <0 .05 ).结论:腹腔镜

  13. 经皮肾镜取石术治疗小儿复杂肾结石合并上尿路梗阻%Treatment of complex renal calculi and upper urinary tract obstruction with Minimally invasive percu-taneous nephrolithotomy in children

    Institute of Scientific and Technical Information of China (English)

    张国锋; 侯广军; 耿宪杰; 张春英; 范应中; 张谦

    2015-01-01

    目的:探讨微创经皮肾镜取石术(MPCNL)治疗小儿复杂肾结石合并上尿道梗阻的疗效和临床应用价值。方法回顾性分析我们于2006年6月至2009年6月采用微创经皮肾镜取石术(MPCNL)治疗的20例小儿复杂肾结石合并上尿路梗阻患儿临床资料,其中男14例,女6例,年龄8个月至11岁,平均年龄4.5岁。结果全部患儿平均住院时间6 d,20例中,16例一期全部取净,4例行二期取净,一期结石清除率为80.0%(16/20),术中未见肾盂大穿孔或肾皮质撕裂的并发症,无一例需术中输血,所有患儿术后随访6~12个月,未见输尿管狭窄或闭锁等并发症。结论微创经皮肾镜取石术(MPCNL)治疗小儿复杂肾结石合并上尿路梗阻安全有效,值得在临床上推广。%Objetive To evaluate the efficacy and the clinical value of minimally invasive percutaneous nephrolithotomy (MPCNL)in terms of treating complex renal calculi with upper urinary tract obstruction in children. Methods A total of 20 patients who received treatment by minimally invasive percutaneous nephro-lithotomy (MPCNL)in The First Affiliated Hospital of Zheng zhou University and in The children's Hospital of Zhengzhou between June 2006 and June 2009 were analyzed retrospectively from whom 14 male and 6 female, with average age 4.5 (8 months~1 1 years old). Results The average hospitalization time was 6 days,and 16 out of 20 cases succeeded in taking out the stones clearly at the first time,while the rest 4 cases needed sec-ond surgeries.The stone-free rate was 80.0% (16/20).There were no big holes or renal pelvis cortical tear complications during the operation,and no one needed blood transfusions in the surgery.In the follow-up 6 to 12 months,the ureteral stricture or urethratresia complication was not detected. Conclusion MPCNL has the advantanges of safety and high efficiency in treating complex renal calculi with upper urinary tract

  14. Comparison Between Retroperitoneoscopic and Open Mini-incision Ureterolithotomy for the Treatment of Upper or Middle Ureteral Calculi%后腹腔镜输尿管切开取石与小切口取石治疗输尿管中上段结石的比较

    Institute of Scientific and Technical Information of China (English)

    易雄飞; 袁俊斌; 邹林; 范本祎

    2014-01-01

    Objective]To compare the clinical efficacy between retroperitoneoscopic ureterolithotomy (RPLU)and open mini-incision ureterolithotomy(MIOU)for the treatment of upper or middle ureteral calculi.[Methods]A total of 72 patients with upper or middle ureteral calculi undergoing ureterolithotomy in our hos-pital from March 2010 to March 2014 were analyzed retrospectively.Patients with impacted upper or middle stones which the diameter was more than 1.5cm or failed ureteroscopic lithotripsy(URSL)/extracorporeal shock wave lithotripsy(ESWL)were enrolled in the study.Among them,37 patients underwent MIOU and 35 patients underwent RPLU.Postoperative visual analogue scales(VAS),analgesic duration,one-time stone re-moval rate,the withdrawal time of postoperative drainage tube,operation time,intraoperative blood loss, postoperative complications,hospital stays and the recovery time were compared between two groups.[Re-sults]There was no significant difference in intraoperative blood loss,withdrawal time of postoperative drain-age tube,one-time stone removal rate and the incidence of complications between two groups(P>0.05).The operation time in MIOU group was shorter than that in RPLU group(P0.05),小切口组手术时间明显短于后腹腔镜组(P <0.001);而在术后连续两天 VAS值、镇痛泵使用时间、住院时间及恢复时间上,后-腹腔镜组明显优于小切口组(P<0.01)。结论对于输尿管中上段的嵌顿性结石及输尿管镜碎石或体外震波碎石失败者,小切口及后腹腔镜输尿管切开取石均是安全、可靠的方案。但后腹腔镜输尿管切开取石术较小切口取石术有术后患者耐受性好、术后恢复快的优点。

  15. Discussion on Clinical Efficacy of Percutaneous Nephrolithotomy for the Treatment of 42 Patients with Complex Renal Calculi%经皮肾镜取石治疗复杂性肾结石42例临床效果探讨

    Institute of Scientific and Technical Information of China (English)

    商昌欢

    2013-01-01

    [目的]探讨经皮肾镜取石术治疗复杂性肾结石的临床效果.[方法]回顾性分析84例复杂性肾结石一般资料,按照入院时间先后分为研究组和对照组各42例.对照组采用开放性肾窦内肾盂或肾实质切开取石术进行治疗,研究组经皮肾镜取石进行治疗,观察和比较两组患者手术情况.[结果]研究组患者平均手术时间、术中出血量、平均住院时间、结石清除情况明显优于对照组(P<0.05或0.01).[结论]采用经皮肾镜取石术治疗复杂性肾结石创伤较小,术中出血量少、术后恢复较快、并发症少、结石清除率高.%[Objective] To explore the clinical efficacy of the treatment of complex renal calculi. [Methods] General materials of 84 patients with complex nephrolithiasis were analyzed retrospectively. According to the admission time, all patients were divided into study group and control group with 42 cases in each group. The control group underwent open nephrolithotomy of renal sinus in renal pelvis or renal parenchyma, while the study group underwent percutaneous nephrolithotomy. The operation situation was observed and compared between two groups. [Results]The average operation time, intraoperative blood loss, the average stay and stone-free rate in the study group were obviously superior to the control group, and there were significant differences( P <0. 05 or 0. 01). [Conclusion]Percutaneous nephrolithotomy for the treatment of complex renal calculi has good effect, small trauma, less intraoperative blood loss, rapid postoperative recovery faster, fewer complications and high stone-free rate.

  16. Clinical efficacy of macroscopic renal cyst combined with cutaneous lithography for renal cysts and renal or collateral calculi%后腹腔镜肾囊肿去顶联合经皮肾穿刺碎石术治疗肾囊肿合并肾或输尿管上段结石的临床疗效观察

    Institute of Scientific and Technical Information of China (English)

    张晓; 谢波; 莫启旺

    2015-01-01

    目的:探讨肾囊肿合并肾或输尿管上段结石患者运用后腹腔镜肾囊肿去顶联合经皮肾穿刺碎石术治疗的临床效果。方法选择2012年9月~2014年9月间我院诊治的50例肾囊肿合并肾或输尿管上段结石的患者,将其均分为两组,对照组25例患者实施开放性手术治疗,观察组25例患者运用后腹腔镜肾囊肿去顶联合经皮肾穿刺碎石术治疗,比较两组患者的术中出血量、手术时间、术后胃肠功能恢复时间、术后住院时间、术后下床活动时间、结石清除率、结石及囊肿复发率、并发症发生率、术后疼痛视觉模拟评分(VAS)等。结果观察组患者的术中出血量、手术时间、术后胃肠功能恢复时间、术后住院时间、术后下床活动时间、术后疼痛视觉模拟评分(VAS)均明显低于对照组(P0.05)。观察组患者感染发生率低于对照组(P0.05). Incidence rate of infections in the observation group was lower than that in the control group (P<0.05). Conclusion Retroperitoneal laparoscopy renal cyst unroofing combined with percutaneous nephrolithotomy for patients with renal cyst complicated with upper renal or ureteral calculi has various advantages of less trauma, less amount of bleeding during surgery, less pain after surgery, higher clearance rate of cyst and calculi and lower relapse rate, which is worthy of clinical promotion and application.

  17. 经皮肾镜取石与输尿管镜碎石术治疗嵌顿性输尿管上段结石疗效比较分析%Comparative analysis of curative effects between percutaneous nephrolithotomy and ureteroscopy lithotripsy in the treatment of impacted upper ureteral calculi

    Institute of Scientific and Technical Information of China (English)

    邓助朋; 陈宁; 刘东彪; 陈结能; 周晓帆; 吴春志

    2015-01-01

    目的:对比经皮肾镜取石与输尿管镜碎石术治疗嵌顿性输尿管上段结石的临床疗效。方法84例嵌顿性输尿管上段结石患者,采用随机数表法将其分为经皮肾镜组与输尿管镜组,每组42例。经皮肾镜组采用经皮肾镜取石术进行治疗,输尿管镜组采用经尿道输尿管镜碎石术治疗,比较两组患者结石清除率、手术用时、住院时间及术后并发症发生率。结果经皮肾镜组患者结石清除率、手术用时、住院时间及并发症发生率明显优于输尿管镜组,差异具有统计学意义(P complications in treating impacted upper ureteral calculi. This method can shorten hospital stay and reduce patients’ cost, and it contains value in clinical promotion and application.

  18. CT平扫轴向旋转视频显像在复杂性肾结石经皮肾镜取石术中的应用%Non-enhanced CT axis rotating movie imaging in percutaneous nephrolithotomy for complex renal calculi

    Institute of Scientific and Technical Information of China (English)

    吴荣佩; 彭振鹏; 李晓飞; 丘少鹏; 严超贵; 陈凌武

    2010-01-01

    Objective To discuss the clinical application and significance of non-enhanced computed tomography axis rotating movie imaging technique in PCNL for complex renal calculi. Methods Thirty-one cases unilateral and 2 cases bilateral multiple and staghorn renal calculi with mild or mediurn hydronephrosis patients were performed bilateral kidneys non-enhanced CT scanning,three dimensional reconstruction and the axis rotating movie composition were carried on by computer software,PCNL accesses were designed and the residual stone were predicted referred to the access-calyces angle measured in axis rotating movie image,PCNL were performed after while.Comparing between preoperation accesses design and residual stone prediction with in-operation practice were carried out.Results The first PCNL access was constructed via posterior middle upper minor calyces in 22 renal units and via posterior middle lower minor calyces in 13 renal units,which was consistent with pre-operation design according to CT axis rotating movie image.The second PCNL accesses were constructed via lower calyx posterior upper minor calyces in 9 renal units and via lower calyx posterior lower minor calyces in 5 renal units,nephrolithotomy were performed in the same operation,clinical stone clearance rate was 80%(28/35),other 7 cases with residual stone were consistent with pre-operation prediction,No blood transfusion was necessary and no severe complication happened in all 33 cases.Conclusions Non-enhanced CT axis rotating movie imaging provided the detail three dimensional shape and spatial structure of complex renal calculi intuitively) that was benefit for designing appropriate PCNL accesses for complex renal calculi patients, guiding for searching stone fragments in operation, predicting residual stone, and ensuring operation safety.%目的 探讨CT平扫轴向旋转视频显像在复杂性肾结石经皮肾镜取石术(PCNL)中的应用价值. 方法 伴轻、中度肾积水的

  19. The application of flexible ureteroscopy with holmium laser in ureteral duplication with upper urinary tract calculi (a report of 5 cases)%输尿管软镜钬激光碎石治疗重复输尿管畸形合并上尿路结石5例报告

    Institute of Scientific and Technical Information of China (English)

    黄建林; 廖勇; 黄翔; 安宇; 邱明星

    2014-01-01

    目的:探讨输尿管软镜钬激光碎石治疗重复输尿管畸形合并上尿路结石的有效性和安全性。方法回顾2012年7月至2014年5月我院收治的5例采用输尿管软镜钬激光治疗的重复输尿管畸形合并上尿路结石患者的临床及随访资料,结合文献资料进行分析。男性2例,女性3例;平均年龄32.2(25~40)岁;上位肾结石1例,下位肾结石1例,输尿管上段结石2例,输尿管上段结石合并下位肾结石1例。结石大小平均1.5(1.0~2.2)cm。结果4例患者成功碎石,1例因输尿管狭窄上鞘失败改为经皮肾镜碎石术。术后1个月结石完全排净率为75%(3/4),1例残留结石经体外冲击波碎石后结石排出。所有患者术中及术后无输尿管损伤,无明显出血、发热及尿脓毒血症发生。随访3~20个月,结石无复发,患者的肾积水均有不同程度的改善。结论输尿管软镜钬激光碎石治疗重复输尿管畸形合并上尿路结石安全、有效。%Objective To evaluate the therapeutic effect and safety of flexible ureteroscopy with holmium laser for ure‐teral duplication with upper urinary tract calculi .Methods The clinical data and follow‐up results of 5 patients with ureteral duplication and upper urinary tract calculi who were treated with flexible ureteroscopy and holmium laser during July 2012 and May 2014 in our hospital were reviewed retrospectively .Three of the patients were female and 2 were male ,and the average age was 32 .2 years (ranging from 25 to 40 year ) .The mean diameter of calculus was 1 .5 cm (ranging from 1 .0 cm to 2 .2 cm) . The cases included 1 case of upper kidney stone ,1 case of inferior kidney stone ,2 cases of upper ureter stone and 1 case of up‐per ureter stone with inferior kidney stone .Results Four patients underwent flexible ureteroscopy and laser lithotripsy suc‐cessfully ,and another case was converted to percutaneous

  20. The Medical Expulsive Effect of Tamsulosin, Diclofenac, Nifedipine Triple in the Lower Ureteral Calculi after ESWL%坦索罗辛缓释胶囊、双氯芬酸钠、硝苯地平三联在输尿管下段结石ESWL后辅助排石中的作用

    Institute of Scientific and Technical Information of China (English)

    李亚军; 宋琳; 白鹏飞; 高海东

    2014-01-01

    目的研究α1肾上腺素能受体阻滞剂坦索罗辛、非甾体类镇痛抗炎药双氯芬酸钠和钙离子阻滞剂硝苯地平三联药物在输尿管下段结石ESWL后辅助排石中的效果。方法98例输尿管下段结石患者随机分成两组院组1为对照组,于ESWL后口服坦索罗辛缓释胶囊0.4 mg,1次/晨;组2于ESWL后口服坦索罗辛缓释胶囊0.4 mg,1次/晨,双氯芬酸钠缓释胶囊50 mg,2次/d,硝苯地平缓释片10 mg,2次/d。每例患者观察时间不超过2 w。结果在观察时间内组1、组2排石率分别为73.5%和91.8%,结石排出时间分别为8 d和5 d,再次发生肾绞痛而需要镇痛药治疗的患者分别为20.4%和4.1%,两组排石率、排石时间及肾绞痛发生率比较差异均有统计学意义(<0.05)。组2除1例发生低血压外,无其他不良反应发生。结论坦索罗辛缓释胶囊、双氯芬酸钠和硝苯地平三联药物能提高输尿管下段结石ESWL后的排石率、缩短排石时间和减少再发生肾绞痛的机率,且安全有效,可作为输尿管下段结石ESWL后的辅助排石方法。%Objective To study the adjunctive expulsive effect of a1 adrenergic receptor blocker tamsulosin, non steroidal anti-inflammatory drug diclofenac sodium and calcium channel blockers nifedipine in the lower ureteral calculi after ESWL. Methods 98 cases of lower ureteral calculi patients were randomly divided into 2 groups:the patients in group 1 took tamsulosin (0.4mg, 1/early morning) after ESWL; the patients in group 2 took tamsulosin ( 0.4mg, 1/early morning), diclofenac sodium sustained release capsules (50mg, 2/day)and extended release nifedipine tablets (10mg, 2/day). Al patients were observed for less than 2 weeks. Results During the period of observation, the lithagogue rate of group 1 and group 2 were 73.5%and 91.8%, respectively. The stone expulsion time of group 1 was 9.3±2.6d and group 2 was 6.6±2.1d. The patients in two groups who had renal

  1. Safety and Efifcacy Analysis of the Ureteroscope Holmium Laser Lithotripsy for Ureteral Calculi%输尿管肾镜钬激光碎石术治疗输尿管结石的安全性与有效性分析

    Institute of Scientific and Technical Information of China (English)

    柳学春

    2013-01-01

    Objective:To study and explore the safety and effectiveness of ureteroscope holmium laser lithotripsy for ureteral calculi. Methods:Our choice of 148 cases of ureteral were on calculus patients were randomly divided into observation group and control group and observation group of 75 patients with ureteral renal mirror holmium laser lithotripsy in the treatment group, 73 cases of the external shock wave lithotripsy treatment, compared between the two groups of patients with surgical effect and complications. Results:The observation group operation time [(28.6±3.8)min vs (47.5±8.2)min] and hospitalization time [(5.7±1.3)d vs (7.4±1.9)d] significantly shorter than control group, gravel success rate, stones row net rate is significantly higher than control group, complication rates significantly lower than control group, two groups have significant difference, there is statistical significance (P<0.05). Conclusion:Ureteral renal mirror holmium laser lithotripsy for the treatment of ureteral calculi operation is simple, safe, minimally invasive, high efficiency, it is worth clinical application.%目的:研究与探讨输尿管结石应用输尿管肾镜钬激光碎石术治疗的安全性与有效性。方法:选择我院收治的148例输尿管上段结石患者,随机分为观察组和对照组,观察组75例采用输尿管肾镜钬激光碎石术进行治疗,对照组73例采用体外冲击波碎石术进行治疗,比较两组患者的手术效果及并发症发生情况。结果:观察组手术时间[(28.6±3.8)min vs(47.5±8.2)min]和住院时间[(5.7±1.3)d vs(7.4±1.9)d]显著短于对照组,碎石成功率、结石排净率显著高于对照组,并发症发生率显著低于对照组,两组有显著性差异,有统计学意义(P<0.05)。结论:输尿管肾镜钬激光碎石术治疗输尿管结石操作简便、安全、微创、高效,值得临床推广应用。

  2. The value of MSCT three-dimensional reconstruction technique in the treatment of percutaneous nephrolithotomy in stag horn calculi%多层螺旋CT三维重建技术在经皮肾镜治疗鹿角状肾结石中的价值

    Institute of Scientific and Technical Information of China (English)

    陈晶; 李香营; 陈旭

    2011-01-01

    [Objective]To assess the safety and efficacy of multislice spiral computed tomography (MSCT)through percutaneous nephrolithotomy (PCNL) for the treatment of staghorn renal calculi.[Methods]We retrospectively reviewed charts of patients who received MSCT scanning before underwent PCNL procedures from 2003 to 2008.The three dimensional reconstruction movie images were acquired in Wizad workstation.According to the movie image, the spatial distribution of the stone was pinpoint, PCNL access was then perfectly designed.Postoperative stone clearance was documented on B-mode ultrasonic diagnostic equipment or X-ray KUB.[Results]A total of 105 staghorn renal calculi patients underwent 124 separate procedures.The number of tracts per procedure were single tract in 79 and 2 tracts in 45.38 cases with residual stone diameter <1.0 em in kidney calices.The stone clearance rate was 69.4% (86/124).[Conclusion]The MSCT movie image can help to find the stone accurately,showing the structure detail as the size, shape and location of the stone.It offers the potential advantages of better access for PCNL procedures, lower residual rate and higher operation safety.%目的 探讨多层螺旋CT(MSCT)三维重建技术在经皮肾镜治疗鹿角状肾结石中的价值.方法 105例鹿角形肾结石患者行双肾MSCT平扫,在Wizad工作站进行三维重建,根据结石空间分布特点建立经皮肾镜建立的理想通道进行腔内碎石取石术.术后通过术后复查B超或KUB平片观察结石残留情况.结果 105例(124侧)鹿角状肾结石患者根据MSCT三维重建建立经皮肾镜通道,79侧采用单一通道,45侧加做第二通道,术后38侧肾盏内有小于1cm结石残余,结石清除率为69.4%(86/124).结论 MSCT三维重建技术可以准确地发现结石,明确其大小、形态、位置,生动地显示结石的三雏形态和空间位置关系,为经皮肾镜治疗肾鹿角形结石提供了明确的手术径路,能够准确确

  3. 后腹腔镜肾切开取石与经皮肾镜取石术治疗复杂性肾结石的临床疗效比较%Efficacy of retroperitoneal laparoscopic nephrolithotomy vs.percutaneous nephrolithotomy in patients with complex renal calculi

    Institute of Scientific and Technical Information of China (English)

    王忆勤; 张爱军; 姚俊; 王照凡; 叶明; 杨超

    2016-01-01

    Objectives To compare the efficacy between retroperitoneal laparoscopic nephrolithotomy and percutaneous nephrolithotomy (PNL) in patients with complex renal calculi.Methods Clinical data for 126 patients with complex renal calculi from January2010 to December 2014 were reviewed.They were divided into laparoscopic group (n =54) underwent retroperitoneal laparoscopic nephrolithotomy and PNL group (n =72) underwent PNL.The condition related to surgery and indexes for therapeutic effects between the two groups were compared.Results All of the patients underwent surgery successfully and no perioperative death occurred.In the laparoscopic group,operative time was longer than that in the PNL group(P <0.05),and blood loss was less than that in the PNL group (P < 0.05).No difference in the hospital stay and rate of conversion between the two groups were found (P > 0.05).In the laparoscopic group,the rate of two-stage operation was higher than that in the PNL group(P <0.05),and intraoperative stone-free rate was lower than that in the PNL group (P < 0.05).After two-stage operation,the postoperative stone-free rate was 100%.Conclusions Laparoscopic biliary tract surgery for choledocholithiasis in elderly patients is safe and effective.But surgeons should grasp the operation indication flexibly and optimize the perioperative management.%目的 比较后腹腔镜肾切开取石与经皮肾镜取石术(PNL)治疗复杂性肾结石的临床疗效.方法 选取本院2010年1月至2014年12月收治的126例复杂性肾结石,其中行后腹腔镜肾切开取石术者54例(腹腔镜组),行PNL治疗72例(PNL组).比较两组患者的手术相关情况及疗效指标.结果 两组患者手术均顺利完成,无围手术期死亡病例.腹腔镜组的手术时间长于PNL组,但术中出血量小于PNL组,差异均有统计学意义(P<0.05).两组患者的住院时间和中转开放率比较,差异无统计学意义(P>0.05).腹腔镜组二期手术率高于PNL组,

  4. 输尿管镜下钬激光碎石术作为日间手术的可行性及安全性研究%Feasibility and safety of day surgery for holmium: YAG laser lithotripsy for urinary tract calculi

    Institute of Scientific and Technical Information of China (English)

    李玉涛; 沈鹏飞; 徐鹏; 魏武然; 戴轶; 王佳

    2013-01-01

    Objective To investigate the feasibility and safety of day surgery holmium:YAG laser lithotripsy for urinary tract calculi.Methods A total of 294 cases of urinary tract calculi were treated with ureteroscopic holmium:YAG laser lithotripsy from October 2010 to September 2011.There were 147 cases for day surgery and 147 cases for inpatient surgery group.The time of waiting to be admitted,success rate,operative time,intraoperative and postoperative complications,hospitalization costs were analyzed in each group.Results The mean operative time of the day surgery group and the inpatient surgery group was 46.4± 16.5 and 52.1± 18.3 min.The difference in the mean operative time between the two groups was not statistically significant (P>0.05).The stone free rate was not statistically significant between the day surgery group (95.9%) and the inpatient surgery group (92.5%,P>0.05).The complication rate of the day surgery group was slightly lower than the inpatient surgery group (5.0% VS 5.4%),but the differences between the two groups was not statistically significant (P>0.05).The mean time of waiting to be admitted of the day surgery group was statistically shorter than the inpatient surgery group(2.5±1.3d VS 7.6±3.6 d,P<0.05).Patients in the day surgery groups spent statistically less money than patients in the inpatient surgery group (5433.4 VS 8612.9,P<0.05).Conclusions Day surgery for ureteroscopic holmium:YAG laser lithotripsy could be safe with lower costs and incidence of postoperative complications,faster postoperative recovery.Pre-operative adequately and selecting appropriate patients are helpful to reduce and control of intraoperative and postoperative complications.%目的 探讨日间手术方式行输尿管镜下钬激光碎石术的可行性及安全性. 方法 回顾性分析2010年10月至2011年9月采用输尿管镜下钬激光碎石术治疗的输尿管结石患者294例的临床资料.日间手术组147例,男100例,女47

  5. 泄热逐瘀法对输尿管上段结石钬激光碎石术后辅助排石作用的临床研究%Clinical Study on the Effect of Expelling Heat and Stasis Method for Assisting Stone Removal after Upper Ureteral Calculi Holmium Laser Lithotripsy

    Institute of Scientific and Technical Information of China (English)

    周竹山

    2016-01-01

    Objective To explore the effect of expelling heat and stasis method for assisting stone removal after upper ureteral calculi holmium laser lithotripsy.Methods Chosen in Zhongxiang People′s Hospital from Jan.2013 to Jan.2014,100 patients receiving holmium laser lithotripsy were included,and divided into observation group and control group according to random number table method,50 cases each. The control group used conventional drugs for auxiliary stone removal,and the observation group was treated with expelling heat and stasis method for stone removal,and the therapeutic effects of the two groups were observed and compared.Results The quality of life score of the observation group was significantly higher than the control group[(50 ±6) scores vs (24 ±4) scores,P<0.05];renal colic rate,stone removal rate 2 weeks after operation of the observation group was significantly higher than the control group[6.0% (3/50) vs 20.0% (10/50),80.0% (40/50) vs 56.0% (28/50),P <0.05];the stone discharge time of the observation group was significantly shorter than the control group [ ( 8 ±3 ) d vs ( 12 ±3 ) d, P <0.01 ] . Conclusion The expelling heat and stasis method can effectively promote the stone removal in the patient′s body ,which increases the stone drainage rate,lessens the drainage time,thus is beneficial for the early recovery.%目的:分析泄热逐瘀法对输尿管上段结石钬激光碎石术后辅助排石作用。方法选取2013年1月到2014年1月在钟祥市人民医院进行钬激光碎石术的100例患者,随机数字表法分为观察组和对照组,各50例。对照组采用常规药物辅助碎石,观察组进行泄热逐瘀法辅助碎石,观察并对比两组患者的治疗效果。结果观察组患者生活质量总评分显著高于对照组[(50±6)分比(24±4)分,P<0.05];观察组患者肾绞痛率,术后2周结石排净率显著高于对照组[6.0%(3/50)比20.0%(10/50),80.0%(40/50

  6. Aphallia with urethrorectal fistula, bladder and urethral calculi

    Directory of Open Access Journals (Sweden)

    M Movarrekh

    2006-04-01

    Full Text Available Introduction: Aphallia is a very rare urogenital anomaly with incidence rate of 1 in 30,000,000. It usually coexists with other anomalies such as cardiovascular anomalies which are incompatible with normal life, and therefore infants are delivered stillbirth or live for a very short period of time. Methods: We present an 18 months old boy with aphallia associated with congenital urethrorectal fistula, bladder and urethral stones. All stones were removed endourologically, recto-urethral fistula was repaired and perincal urethrostomy was performed. Results: The stones were composed of calcium phosphate colonized by klebiella pneumonia and proteus mirabilis. Urethrorectal fistula repairment was confirmed by cystography. Patient was discharged without a urinary catheter. Conclusion: In developed countries, management of such patients is to raise them as females. However, we must consider socio-cultural conditions, parents preference and patients tendency in management of aphallia.

  7. Wave-Style Token Machines and Quantum Lambda Calculi

    OpenAIRE

    Lago, Ugo Dal; Zorzi, Margherita

    2015-01-01

    Particle-style token machines are a way to interpret proofs and programs, when the latter are written following the principles of linear logic. In this paper, we show that token machines also make sense when the programs at hand are those of a simple quantum lambda-calculus with implicit qubits. This, however, requires generalising the concept of a token machine to one in which more than one particle travel around the term at the same time. The presence of multiple tokens is intimately relate...

  8. Recurrent bilateral renal calculi in a tetraplegic patient

    DEFF Research Database (Denmark)

    Vaidyanathan, S; Soni, B M; Biering-Sorensen, F;

    1998-01-01

    An 18-year-old male developed C-5 complete tetraplegia following a motor-cycle accident in May 1975. The neuropathic bladder was managed by an indwelling urethral catheter. He developed recurrent episodes of urinary infection with Proteus species. In September 1975, an X-ray of the abdomen revealed...

  9. In-vitro Comminution of Model Renal Calculi using Histotripsy

    OpenAIRE

    Duryea, Alexander P.; Maxwell, Adam D.; Roberts, William W.; Xu, Zhen; Hall, Timothy L.; Cain, Charles A.

    2011-01-01

    Shock wave lithotripsy (SWL) suffers from the fact that it can produce residual stone fragments of significant size (>2 mm). Mechanistically, cavitation has been shown to play an important role in the reduction of such fragments to smaller debris. In this study we assessed the feasibility of using cavitationally-based pulsed ultrasound therapy (histotripsy) to erode kidney stones. Previous work has shown that histotripsy is capable of mechanically fractionating soft tissue into fine, acellula...

  10. Probabilistic Models and Process Calculi for Mobile Ad Hoc Networks

    DEFF Research Database (Denmark)

    Song, Lei

    , thus the network topology may undergo constant changes. Moreover the devices in an MANET are loosely connected not depending on pre-installed infrastructure or central control components, they exchange messages via wireless connections which are less reliable compared to wired connections. Therefore...... issues in MANETs e.g. mobility and unreliable connections. Specially speaking, 1. We first propose a discrete probabilistic process calculus with which we can model in an MANET that the wireless connection is not reliable, and the network topology may undergo changes. We equip each wireless connection......Due to the wide use of communicating mobile devices, mobile ad hoc networks (MANETs) have gained in popularity in recent years. In order that the devices communicate properly, many protocols have been proposed working at different levels. Devices in an MANET are not stationary but may keep moving...

  11. Modeling of laser ablation and fragmentation of biological calculi

    International Nuclear Information System (INIS)

    Laser ablation and fragmentation of calcified biological materials (e.g. kidney and gall stones, calcified arterial walls, bones and teeth) have been demonstrated in vitro and in vivo. In the interaction, laser light incident upon the target material is of sufficient intensity to produce a plasma. The plasma couples to an acoustic wave which then propagates through the dense material, causing spall and fracture by reflection from material discontinuities or boundaries. Experiments have thus far yielded data on the plasma and the acoustic waves against which models can be tested. Data on: mass removal, light emission, absorption and emission spectra, fragmentation efficiency, and cavitation bubble dynamics have been obtained. Two dimensional simulations of the laser-matter interaction have been performed with the radiation-hydrodynamics code LASNEX to elucidate the important physical mechanisms. This research expands upon earlier 1-D studies. The authors find that good quantitative fits between simulation and experiment are obtained for electron density, plasma pressure, mass loss and cavitation bubble growth. They have not, however, fit the spectroscopic or electron temperature data. It is anticipated that model improvements in the area of laser light absorption and material opacity will enable better quantitative agreement to be obtained

  12. Pathophysiological aspects of ureterorenoscopic management of upper urinary tract calculi

    DEFF Research Database (Denmark)

    Osther, Palle J S; Pedersen, Katja V; Lildal, Søren K;

    2016-01-01

    ureter and strain-induced ureteral contractions (peristalsis). Different receptor types modulate this peristaltic activity. β-receptor agonists have been investigated in animal and human trials for the purpose of relaxing the ureter. In randomized, placebo-controlled trials in pigs and humans, usage of...... ureterorenoscopy, potentially translating into harmful effects, and how such pathophysiological processes may be minimized. RECENT FINDINGS: Complications to ureterorenoscopy and postoperative pain seem to be related to intrarenal pressure and/or access. Mean intrarenal pressures in the range of 60-100 mmHg during...... ureterorenoscopy without access sheaths have been measured, thus by far exceeding the threshold for intrarenal backflow, potentially resulting in septic complications. Intrarenal pressure may be reduced by use of ureteral access sheaths, which, however, may cause ureteral damage due to the limited size of the...

  13. 血白细胞与C反应蛋白及疼痛分级对输尿管结石自排的影响研究%Role of White Blood Cell,C - reactive Protein and Pain Grading in Predicting Self - discharge of Ureteral Calculi

    Institute of Scientific and Technical Information of China (English)

    屈健; 刘卫洪; 王江平; 丁国富; 王勤章

    2014-01-01

    背景输尿管结石的发病率和患病率逐年增加,其大多数可自行排出,但目前预测结石自行排出的方法尚不完善。目的通过前瞻性研究探讨血白细胞计数、C 反应蛋白(CRP)水平及肾绞痛疼痛分级对输尿管结石自行排出的影响。方法采用简单随机抽样法选取2013年1-8月因肾绞痛在石河子大学医学院第一附属医院就诊的符合入选标准的233例输尿管结石患者的临床资料。记录患者的年龄、性别、体质指数(BMI)、疼痛分级、实验室检查指标、B 超或 CT 影像学资料。1个月后根据患者结石的排出情况分为排石组和未排石组。采用 Logistic 回归分析筛选影响因素;绘制 ROC 曲线确定血白细胞计数预测输尿管结石自行排出的最佳截点。结果138例患者(排石组)输尿管结石自行排出,排石率为59.23%;95例患者(未排石组)输尿管结石未排出。两组患者的结石大小及位置、年龄、疼痛分级、血白细胞计数、中性粒细胞分数、中性粒细胞计数、淋巴细胞分数、CRP 水平间差异有统计学意义( P <0.05)。Logistic 回归分析显示,结石大小、血白细胞计数、CRP 水平、结石位置是输尿管结石自行排出的独立影响因素(OR =0.028、1.736、0.557、1.569,P <0.05)。根据 ROC 曲线,血白细胞计数预测输尿管结石自行排出的截点为9.10×109/ L,灵敏度和特异度分别为0.70和0.58。结论与结石大小及位置一样,血白细胞计数和 CRP 水平可作为预测输尿管结石自行排出的独立影响因素。血白细胞计数<9.10×109/ L 的患者结石排出率低,建议直接行输尿管镜治疗。%Background It has been reported that the prevalence and incidence of ureteral calculi(UC) have in-creased by years. Most UCs can be discharged spontaneously. But the method of predicting self - discharge remains unperfect. Objective To explore the effects

  14. Evaluation of Tamsulosin Combined with Methylprednisolone as Medical Expulsive Therapy after ESWL in Patients with Proximal Ureter Calculi%坦索罗辛联合甲基泼尼松龙对输尿管上段结石体外震波碎石术后辅助排石作用的研究

    Institute of Scientific and Technical Information of China (English)

    叶烈夫; 杨泽松; 傅长德; 何延瑜; 詹汉雄; 林玉琴

    2012-01-01

    目的 评估坦索罗辛联合甲基泼尼松龙对输尿管上段结石体外震波碎石(ESWL)术后辅助排石作用的有效性及安全性.方法 109例输尿管上段结石患者ESWL术后,随机分为A组(34例)、B组(33例)及C组(42例),分别应用尿石通、尿石通+坦索罗辛、尿石通+坦索罗辛+甲基泼尼松龙辅助排石,随访2月.结果 A,B,C组的结石排净率分别为50.0%,63.6%,81.0%(C组vs A组,P<0.01),结石排出时间为(3.35±1.16)d,(2.10±1.22)d,(1.54±0.85)d(B组、C组vs A组,P<0.01).石街形成8例,其中A组6例,B组和C组各1例(C组vs A组,P<0.05).3组肾绞痛发生人次分别为(0.38±0.60),(0.15±0.36),(0.10±0.37)(C组vs A组,P<0.05).C组药物副作用发生率为11.9%(5/42),无一例因副作用停药.结论 输尿管上段结石ESWL术后采用坦索罗辛联合甲基泼尼松龙治疗能够增加结石清除率、缩短排石时间、降低石街形成率并减少肾绞痛的发生,用于辅助排石安全有效.%Objective To evaluate the efficacy and safety of tamsulosin combined -with methyl-prednisolone as adjuvant expulsive therapy in patients with upper ureteral calculi after extracorporeal shock wave lithotripsy (ESWL). Methods 109 patients with single upper ureteral calculus who underwent ESWL -were randomly divided into three groups, group A (34 patients)received a traditional chinese medicine(Niaoshitong) , group B(33 patients) received Tamsulosin and Niaoshitong -while group C(42 patients) received Methylprednisolone plus Tamsulosin and Niaoshitong. All patients -were folio-wed up regularly for 2 months, stone free status was confirmed with both a plain X-ray of the urinary tract and urinary ultra-sonography. Results The stone-free rate was 50. 0% , 63. 6%, 81. 0% for group A, B and C, respec-tively(group C vs A, P<0. 01). The mean expulsion time was (3. 35 + 1. 16) days in group A, (2. 10 + 1. 22) days in group B, and (1. 54 + 0. 85) days in group C (group C and B vs A, P<0. 01). Six patients in

  15. Highly selective α1 blocker tamsulosin as adjunctive medical expulsion therapy following extracorporeal shock wave lithotripsy of renal calculi%坦索罗辛对肾结石体外震波碎石术后辅助排石作用的研究

    Institute of Scientific and Technical Information of China (English)

    叶烈夫; 傅长德; 杨泽松; 何延瑜; 詹汉雄; 林玉琴; 许庆均; 张志刚; 黄水通

    2013-01-01

    addition to standard therapy.Patients were followed up for 2 months.Results Parameters including stone expulsion rate,mean expulsion time,rate of steinstrasse development,number of renal colic episodes and analgesics used were in favor of the tamsulosin group and the differences were significant (P =0.009,0.000,0.028,0.012,0.002 respectively).Unfortunately the stone free rate was not significantly different between two groups(P =0.125).In the subgroup analysis,patients with stone ≥ 10 mm had significantly greater stone free rate in the tamsulosin group(62.8%)compared with the control group (40.5%,P =0.044),and all other parameters were significantly in favor of the tamsulosin group(P <0.05).For patients with stone < 10 mm,only mean expulsion time and number of renal colic episodes were significantly different between two groups (P.=0.001,0.026).The incidence of side effects was not significantly different between two groups,and all side effects were minimal which did not require cessation of therapy in any patient.Conclusions After a single session of ESWL for renal calculi,tamsulosin helps to facilitate stone fragmentation passage,decrease expulsion time,reduce steinstrasse development,colic episodes and amount of analgesics required,but the stone free rate is significantly increased only for renal stones ≥ 10 mm in size.Adjuvant treatment with tamsulosin is effective in improving the outcome of ESWL with minimal side effects.

  16. 微通道和标准通道经皮肾镜碎石术对上尿路结石患者血流动力学和血气分析的影响%Effects of Microchannel and Standard Percutaneous Nephrostolithotomy on Hemodynamics and Blood Gas Analysis in Patients with upper urinary Tract Calculi

    Institute of Scientific and Technical Information of China (English)

    石国忠; 李风; 夏宗禹; 余昆

    2015-01-01

    析的影响逐渐增加;对于心、肺、肾功能正常的患者,由于器官功能的代偿,微通道 PCNL 与标准通道 PCNL 引起的灌流液吸收量的差异不足以引起患者血流动力学和血气分析的不同。%Objective To explore the effects of percutaneous nephrostolithotomy(PCNL) and microchannel PCNL (mPCNL) on hemodynamics and blood gas analysis( BGA) in patients with upper urinary tract calculi. Methods From january 2012 to November 2013,200 kidney stone patients from Three Gorges Central Hospital were randomized into groups PCNL,mPCNL,100 in each. The mPCNL group were injected with F16 plastic sheath,PCNL group with F24 plastic sheath to establish percutaneous renal access. Patientsˊ mean arterial pressure( MAP),heart rate( HR),central venous pressure (CVP)before anesthesia,before perfusion,at minutes 10,30,60,90,120 of perfusion and after operations were recorded and blood routine examination, venous electrolyte, BGA including Na + , Cl - , K + , pH, base excess ( BE ) were determined. Results The surgical time of mPCNL group was(102. 3 ± 19. 1)min,higher than that of PCNL group〔(83. 8 ± 15. 2)min〕(t = 7. 58,P 0. 05),MAP,CVP lower before perfusion than before anesthesia in 2 groups (P 0. 05),but higher at minutes 30,60,90,120 than before perfusion(P 0. 05),K + ,pH,BE lower after operation than before anesthesia(P < 0. 01). No urosepsis or other severe complications were found in 2 groups after operation. Conclusion With the increase of operative time,the effects of the absorption of perfusate on hemodynamics and BGA increase. For the patients with normal functions of heart,lung and total kidney,the difference of absorption of perfusate caused by mPCNL and PCNL is insufficient to lead the difference of hemodynamics and BGA.

  17. 新しい手術法:Dismembered Pyelolithotomy

    OpenAIRE

    大島, 伸一

    1982-01-01

    A new surgical procedure for the removal of renal calculi, dismembered pyelolithotomy, is described. This operation was performed on 10 patients with complicated staghorn renal calculi, staghorn renal calculi or multiple renal calculi. Two out of 5 patients with complicated staghorn renal calculi had small residuals. In the other 5 patients (3 with staghorn renal calculi, 2 with multiple renal calculi), all the calculi were removed without any residuals. Advantages and indications for this su...

  18. Hydronephrosis of one kidney

    Science.gov (United States)

    ... Acute hydronephrosis; Urinary obstruction; Unilateral hydronephrosis; Nephrolithiasis - hydronephrosis; Kidney stone - hydronephrosis; Renal calculi - hydronephrosis; Ureteral calculi - hydronephrosis; ...

  19. COMPARISON OF ROLE OF IVP AND USG IN EVALUATING URETERIC CALCULI DISEASE

    Directory of Open Access Journals (Sweden)

    Rajesh Rathore

    2016-07-01

    Full Text Available The incidence of urolithiasis varies according to geographic area, age, and sex distribution. 1 Various studies have shown that in economically developed countries the prevalence rate ranged between 4% and 20%. Urolithiasis may affect up to 10% of the population over the course of a lifetime. In India, upper and lower urinary tract stones occur frequently, but the incidence shows wide regional variation. Smaller stones (Up to 5 mm may cause severe symptoms such as flank pain and nausea, but pass without intervention. Though, they may need supportive care, but larger stones need intervention. Surgery has been used to remove stones (Lithotomy or to break them all into small pieces (Lithotripsy since antiquity. Twenty five years ago, open surgery was the sole form of therapy for urolithiasis, but now endourology is the surgical treatment of choice. 2 URETERIC JET When the bolus of urine being transmitted through the ureter reaches the terminal portion. It is ejected forcefully into the bladder through the Vesicoureteric Junction (VUJ. This creates a jet of urine that can be seen within the urinary bladder during cystoscopy and grey-scale Ultrasonography (US. Urine secreted from the renal glomeruli is excreted into the upper urinary tract including the collecting system, calyces-pelvis system, and ureter. Although, the precise mechanism of urine drainage through the whole system remains somewhat contentious. The trigger of ureteric jets is undoubtedly the pumping effect of calyceal peristalsis. 3 The latter comprises an autonomic and rhythmic minor calyceal peristalsis and a pressure-dependent major calyceal peristalsis, and the pressure of the major calyces comes from the resistance of the intrinsic tone of the upper ureter to the urine draining in the renal pelvic volume and tone and the rate of urine inflow. 4 Continuous discrete boluses of urine drainage into the ureter from pelvis, then fill the ureter, and finally, a ureteric jet is produced after the ureter is wholly filled throughout the autonomic, myogenic, ureteral peristalses. 5

  20. [Hormonal and metabolic disorders as systemic factor for the formation of urinary calculi].

    Science.gov (United States)

    Aliaev, Iu G; Egshatian, L V; Rapoport, L M; Lartsova, E V

    2014-01-01

    In patients suffering from urolithiasis, metabolic diagnostics often reveals abnormalities contributing to the formation of stones: hypocitraturia, hyper- and hypocalcemia, hypercalciuria, hypomagnesemia/hypomagnesuria, hyperoxalaturia, etc. Before surgery, complex biochemical examination of blood and 24-hourcollection urine in 82 patients with urolithiasis was performed. The analysis of the main laboratory parameters of carbohydrate, lipid, calcium and phosphorus and purine metabolism found the prevalence of violations of calcium and phosphorus metabolism in these patients. Dyslipidemia was diagnosed in 31 (37.8%) patients. There was a significant positive correlation between serum total cholesterol and serum total calcium (rs = 0.3315, P = 0.0103). Low serum calcium levels were associated with hyperoxalaturia (rs = -0.4270, P = 0.0295). There was a significant effect of natriuria on urinary excretion of oxalate (rs = 0.6107, P = 0.0001), Mg (rs = 0.4156, P = 0.0096) and K (rs = 0.5234, P = 0.00005). The study shows the role of magnesium in the prevention of recurrence and manifestation of urolithiasis. The combination of two or more types of hormonal and metabolic disorders increases the incidence of recurrent stones. Timely correction of hormonal-metabolic status allows to reduce the risk of stone formation, and hospitalization attributable to the complications associated.

  1. Dextranomer/hyaluronic acid copolymer (Deflux) implants mimicking distal ureteral calculi on CT

    Energy Technology Data Exchange (ETDEWEB)

    Nelson, Caleb P. [Children' s Hospital Boston, Department of Urology, Boston, MA (United States); Chow, Jeanne S. [Children' s Hospital Boston, Department of Radiology, Boston, MA (United States)

    2008-01-15

    Periureteral or subtrigonal injection of dextranomer/hyaluronic acid (Dx/HA) copolymer (Deflux, Q-Med, Uppsala, Sweden) is an increasingly common endoscopic treatment for vesicoureteral reflux. We report a confusing radiographic finding of bilateral calcified Dx/HA injections initially thought to represent bilateral distal ureteral stones in a boy who presented with intermittent periumbilical pain. Urologists, radiologists, and emergency room physicians should be aware of the potential for calcification of ureteral implants of Dx/HA, and of the potentially confusing radiographic images that may result. (orig.)

  2. Three-Dimensional Operational Calculi for Nonlocal Evolution Boundary Value Problems

    OpenAIRE

    Dimovski, Ivan; Tsankov, Yulian

    2011-01-01

    Иван Христов Димовски, Юлиан Цанков Цанков - Построени са директни операционни смятания за функции u(x, y, t), непрекъснати в област от вида D = [0, a] × [0, b] × [0, ∞). Наред с класическата дюамелова конволюция, построението използва и две некласически конволюции за операторите ∂2x и ∂2y. Тези три едномерни конволюции се комбинират в една тримерна конволюция u ∗ v в C(D). Вместо подхода на Я. Микусински, основаващ се на конволюционни частни, се развива алтернативен подход с изп...

  3. Uniform Labeled Transition Systems for Nondeterministic, Probabilistic, and Stochastic Process Calculi

    CERN Document Server

    Bernardo, Marco; Loreti, Michele; 10.4204/EPTCS.60.5

    2011-01-01

    Labeled transition systems are typically used to represent the behavior of nondeterministic processes, with labeled transitions defining a one-step state to-state reachability relation. This model has been recently made more general by modifying the transition relation in such a way that it associates with any source state and transition label a reachability distribution, i.e., a function mapping each possible target state to a value of some domain that expresses the degree of one-step reachability of that target state. In this extended abstract, we show how the resulting model, called ULTraS from Uniform Labeled Transition System, can be naturally used to give semantics to a fully nondeterministic, a fully probabilistic, and a fully stochastic variant of a CSP-like process language.

  4. Decreased renal vitamin K-dependent γ-glutamyl carboxylase activity in calcium oxalate calculi patients

    Institute of Scientific and Technical Information of China (English)

    陈俊汇; 刘继红; 章咏裳; 叶章群; 王少刚

    2003-01-01

    Objective To study the activity of vitamin K-dependent γ-glutamyl carboxylase in patients with calcium oxalate (CaOx) urolithiasis compared with healthy individuals and to assess its relationship to the renal calcium oxalate urolithiasis. Methods Renal parenchymas were harvested from urolithic patients and renal tumor patients undergoing nephrectomy. The renal carboxylase activity was evaluated as the radioactivity of [14C] labeled sodium bicarbonate in carboxylic reactions in vitro using β-liquid scintillation counting. Results Significantly reduced activity of renal vitamin K-dependent γ-glutamyl carboxylase was observed in the urolithic group as compared with normal controls (P<0.01). Conclusion It suggests that the reduced carboxylase activity observed in the urolithic patients may play an important role in the course of renal calcium oxalate urolithiasis.

  5. Universal Enveloping Algebra and Differential Calculi on Orthogonal q-groups

    OpenAIRE

    Aschieri, Paolo; Castellani, Leonardo

    1997-01-01

    We review the construction of the multiparametric quantum group $ISO_{q,r}(N)$ as a projection from $SO_{q,r}(N+2) $ and show that it is a bicovariant bimodule over $SO_{q,r}(N)$. The universal enveloping algebra $U_{q,r}(iso(N))$, characterized as the Hopf algebra of regular functionals on $ISO_{q,r}(N)$, is found as a Hopf subalgebra of $U_{q,r}(so(N+2))$ and is shown to be a bicovariant bimodule over $U_{q,r}(so(N))$. An R-matrix formulation of $U_{q,r}(iso(N))$ is given and we prove the p...

  6. Wave-Style Token Machines and Quantum Lambda Calculi (Long Version)

    OpenAIRE

    Lago, Ugo Dal; Zorzi, Margherita

    2013-01-01

    Particle-style token machines are a way to interpret proofs and programs, when the latter are defined according to the principles of linear logic. In this paper, we show that token machines also make sense when the programs at hand are those of a simple linear quantum $\\lambda$-calculus. This, however, requires generalizing the concept of a token machine to one in which more than one particle can possibly travel around the term at the same time. This is intimately related to entanglement and ...

  7. Renal Calculi: An Unusual Presentation of T-Cell Acute Lymphoblastic Leukemia.

    Science.gov (United States)

    Daly, Gemma F; Barnard, Edward B G; Thoreson, Lynn

    2016-01-01

    Spontaneous tumor lysis syndrome is a rare initial presentation of hematologic malignancy in children that typically presents with complications of electrolyte derangement, specifically hyperkalemia, hyperphosphatemia, and hyperuricemia. We report a case of a 5-year-old boy who presented to the emergency department with gross hematuria, abdominal pain, and vomiting and was ultimately diagnosed with uric acid nephrolithiasis and acute renal failure secondary to spontaneous tumor lysis syndrome in the setting of T-cell acute lymphoblastic leukemia. Tumor lysis syndrome is considered an oncologic emergency, and in this case, the child required urgent treatment with potassium-binding agents, rasburicase, and hemodialysis. This case demonstrates that occult hematologic malignancy should be suspected in cases of nephrolithiasis and acute renal failure when found in conjunction with hyperuricemia despite a normal complete blood count at the time of presentation. PMID:26644483

  8. 胰管结石的治疗进展%Advance in pancreatic duct calculi

    Institute of Scientific and Technical Information of China (English)

    王恺; 邵江华

    2009-01-01

    胰管结石在我国的发病率有逐年升高的趋势.目前治疗手段主要有非手术治疗及手术治疗2种.非手术治疗方法主要有内镜下取石和/或体外震波碎石后取石,手术治疗方法分为胰管引流减压术及胰腺切除术2大类.具体的治疗方法或手术方式的选择需遵循个体化的原则.%The morbidity of pancreatic duct calculus is increasing every year in China. Currently the main therapeutic methods include non-surgical treatment and surgical treatment. Non-surgical treatments contain endoscopic calculus extracting and / or extracorporeal shock wave lithotripsy. Surgical treatment has two categories: drainage of the pancreatic duct decompression and pancreatectomy. Concrete treatment or surgical options should follow the strategy of individual.

  9. The Evaluation of Ureteroscopy and Pneumatic Lithotripsy Results in Pregnant Women With Urethral Calculi

    OpenAIRE

    Keshvari Shirvan, Maliheh; Darabi Mahboub, Mohammad Reza; Rahimi, Hamid Reza; Seyedi, Ali

    2013-01-01

    Background Urinary stone incidence in pregnancy has been reported in a wide range, from 1 in 200 to 1 in 2000 cases. Objectives The aim of this study was to investigate the efficacy and safety of ureteroscopic treatment and its results and complications for pregnant women with urinary stones. Patients and Methods From 2003 till 2011, 113 pregnant patients with symptomatic urolithiasis were admitted to the urology emergency clinic at Imam Reza hospital. All patients were initially treated cons...

  10. Infrared analysis of urinary calculi by a single reflection accessory and a neural network interpretation algorithm

    NARCIS (Netherlands)

    Volmer, M; de Vries, JCM; Goldschmidt, HMJ

    2001-01-01

    Background: Preparation of KBr tablets, used for Fourier transform infrared (FT-IR) analysis of urinary calculus composition, is time-consuming and often hampered by pellet breakage. We developed a new F:T-IR method for urinary calculus analysis. This method makes use of a Golden Gate Single Refecti

  11. [Hormonal and metabolic disorders as systemic factor for the formation of urinary calculi].

    Science.gov (United States)

    Aliaev, Iu G; Egshatian, L V; Rapoport, L M; Lartsova, E V

    2014-01-01

    In patients suffering from urolithiasis, metabolic diagnostics often reveals abnormalities contributing to the formation of stones: hypocitraturia, hyper- and hypocalcemia, hypercalciuria, hypomagnesemia/hypomagnesuria, hyperoxalaturia, etc. Before surgery, complex biochemical examination of blood and 24-hourcollection urine in 82 patients with urolithiasis was performed. The analysis of the main laboratory parameters of carbohydrate, lipid, calcium and phosphorus and purine metabolism found the prevalence of violations of calcium and phosphorus metabolism in these patients. Dyslipidemia was diagnosed in 31 (37.8%) patients. There was a significant positive correlation between serum total cholesterol and serum total calcium (rs = 0.3315, P = 0.0103). Low serum calcium levels were associated with hyperoxalaturia (rs = -0.4270, P = 0.0295). There was a significant effect of natriuria on urinary excretion of oxalate (rs = 0.6107, P = 0.0001), Mg (rs = 0.4156, P = 0.0096) and K (rs = 0.5234, P = 0.00005). The study shows the role of magnesium in the prevention of recurrence and manifestation of urolithiasis. The combination of two or more types of hormonal and metabolic disorders increases the incidence of recurrent stones. Timely correction of hormonal-metabolic status allows to reduce the risk of stone formation, and hospitalization attributable to the complications associated. PMID:25807757

  12. Management of calyceal diverticular calculi: a comparison of percutaneous nephrolithotomy and flexible ureterorenoscopy.

    Science.gov (United States)

    Bas, Okan; Ozyuvali, Ekrem; Aydogmus, Yasin; Sener, Nevzat Can; Dede, Onur; Ozgun, Serhat; Hizli, Fatih; Senocak, Cagri; Bozkurt, Omer Faruk; Basar, Halil; Imamoglu, Abdurrahim

    2015-04-01

    To compare the outcomes in patients who have been treated with flexible ureterorenoscopy (f-URS) and percutaneous nephrolithotomy (PNL) in managing stone-bearing caliceal diverticula. Between April 2007 and October 2013, we performed a retrospective analysis of 54 evaluable patients (28 women and 26 men) with symptomatic stone-bearing caliceal diverticula, who underwent PNL (n = 29) or F-URS (n = 25) in four referral hospitals in Turkey. The groups were compared with respect to demographics, stone location/size, success rate, stone-free status, symptom-free status, complication rates, and hospital stay. The average stone burden preoperatively was significantly larger in patients who were treated with PNL, with the average size for f-URS being 154 ± 77 mm(2) and that for PNL being 211 ± 97 mm(2) (p = 0.023). Symptom-free rates, success rates, stone-free rates and clinically insignificant residual fragments were similar between the groups (p = 0.880 vs. p = 0.537 vs. p = 0.539, and p = 0.877, respectively). There was no statistical difference between the groups for minor complications (p = 0.521) but no major complication (Clavien III-V) occured in the f-URS group; although there were three major complications (10.3 %) (Clavien III) in the PNL group (p PNL group (p PNL. The f-URS procedure is advantageous with respect to a shorter hospital stay and absence of major complications. Therefore, it should be emphasized that the location of the stone and diverticula is an important factor for the selection of the procedure.

  13. Evaluation of anti-urolithiatic activity of Pashanabhedadi Ghrita against experimentally induced renal calculi in rats

    OpenAIRE

    Gupta, Sanjay Kumar; Baghel, Madhav Singh; Bhuyan, Chaturbhuja; Ravishankar, B.; Ashok, B.K.; Patil, Panchakshari D.

    2012-01-01

    Population in an industrialized world is afflicted by urinary stone disease. Kidney stones are common in all kinds of urolithiasis. One distinguished formulation mentioned by Sushruta for management of Ashmari (urolithiasis) is Pashanabhedadi Ghrita (PBG), which is in clinical practice since centuries. Validation of drug is the requirement of time through the experimental study. In this study, trial of PBG has been made against ammonium oxalate rich diet and gentamicin injection induced renal...

  14. Comparison of standard-dose and low-dose scanning with 16-MDCT for urinary calculi

    International Nuclear Information System (INIS)

    Objective: To explore the feasibility to diagnose ureterolithiasis by 16-multidetector spiral computed tomography (16-MDCT) at different low doses based on body mass index (BMI). Methods: A total of one hundred patients from 2009 Sep to 2010 Feb suspected of ureterolithiasis were randomly divided into 2 equal groups undergoing 16-MDCT at standard-dose (120 kV, 240 mA) or low dose (120, 80, and 50 mA, respectively) based on the body mass index (BMI). Taking the clinical diagnosis as the standard, the sensitivity level, specificity level, and positive predictive value of these groups were compared. Results: The dose length product (DLP) of the low-dose CT group and the standard dose group were (726±45.67) and (251±73.87) mGy·cm, respectively. There was significant average CT dose index (CTDIvol ) were 18.95 and 6.65 mGy, respectively. There was significant difference between the two groups (t=31.78, P<0.01). The sensitivity level, specificity level, and positive predictive value of the low-dose group were 97.1% , 94.0%, and 94.3%, respectively, all not significantly different from those of the standard-dose groups (97.3%, 96.0%, and 97.3%, respectively, P>0.05). Conclusions: It is feasible to diagnose ureterolithiasis by low-dose 16-MDCT based on BMI with the obtained image quality meeting the clinical diagnostic requirements. (authors)

  15. Conical square function estimates in UMD Banach spaces and applications to H-infinity functional calculi

    OpenAIRE

    Hytonen, Tuomas; van Neerven, Jan; Portal, Pierre

    2007-01-01

    We study conical square function estimates for Banach-valued functions, and introduce a vector-valued analogue of the Coifman-Meyer-Stein tent spaces. Following recent work of Auscher-McIntosh-Russ, the tent spaces in turn are used to construct a scale of vector-valued Hardy spaces associated with a given bisectorial operator (A) with certain off-diagonal bounds, such that (A) always has a bounded (H^{\\infty})-functional calculus on these spaces. This provides a new way of proving functional ...

  16. Finite Vector Spaces as Model of Simply-Typed Lambda-Calculi

    OpenAIRE

    Valiron, Benoît; Zdancewic, Steve

    2014-01-01

    In this paper we use finite vector spaces (finite dimension, over finite fields) as a non-standard computational model of linear logic. We first define a simple, finite PCF-like lambda-calculus with booleans, and then we discuss two finite models, one based on finite sets and the other on finite vector spaces. The first model is shown to be fully complete with respect to the operational semantics of the language. The second model is not complete, but we develop an algebraic extension of the f...

  17. Differential calculi on quantum vector spaces with Hecke-type relations

    International Nuclear Information System (INIS)

    From a vector space V equipped with a Yang-Baxter operator R one may form the r-symmetric algebra SRV=TV/, which is a quantum vector space in the sense of Manin, and the associated quantum matrix algebra MRV=T(End(V))/-1>. In the case when R satisfies a Hecke-type identity R2=(1-q)R+q, we construct a differential calculus ΩRV for SRV which agrees with that constructed by Pusz, Woronowicz, Wess, and Zumino when R is essentially the R-matrix of GLq(n). Elements of ΩRV may be regarded as differential forms on the quantum vector space SRV. We show that ΩRV is MRV-covariant in the sense that there is a coaction Φ*:ΩRV→MRVxΩRV with Φ*d=(1xd)Φ* extending the natural coaction Φ:SRV→MRVxSRV. (orig.)

  18. Large impacted upper ureteral calculi: A comparative study between retrograde ureterolithotripsy and percutaneous antegrade ureterolithotripsy in the modified lateral position

    Directory of Open Access Journals (Sweden)

    Kamal Moufid

    2013-01-01

    Conclusions: In our series, Perc-URS is a safe and efficient treatment option for proximal ureteral stone, especially when the stone size is superior to 15 mm with the presence of moderate or severe hydronephrosis.

  19. RANDOMIZED TRIAL OF THE SAFETY AND EFFICACY OF TAMSULOSIN AND SILODOSIN IN MEDICAL EXPULSIVE THERAPY FOR DISTAL THIRD URETERIC CALCULI

    OpenAIRE

    Rajanna,; Manjunath; Harsharvardhan

    2014-01-01

    INTRODUCTION: Urolithiasis is a common condition that affects approximately 5% to 10% of the population and the incidence of Urolithiasis is rising. Ureteric stones account for 20% of urinary tract stones and about 70% of them are found in the lower third of the ureter at presentation. Recent literatures show the efficacy of various drugs and minimally invasive procedures for the management of lower third ureteral stones. We performed a randomized, prospective study to assess ...

  20. Characteristic plain radiographic and intravenous urographic findings of bladder calculi formed over a hair nidus: a case report

    International Nuclear Information System (INIS)

    We present the characteristic plain radiographic and intravenous urographic (IVU) findings of calculus formed over a hair. A 66-year-old man who had been quadriplegic for 40 years because of vertebral injury was admitted for further evaluation of frequent urinary tract infection. Plain radiography showed a linear, serpiginous calcification in the lower abdomen, and IVU revealed a round filling defect with linear radiopacity in the bladder, suggesting calculus. The gross appearance of the stone after extraction demonstrated that calcification had formed over a hair

  1. Effects and outcome of Tamsulosin more than just stone clearance after extracorporeal shock wave lithotripsy for renal calculi

    International Nuclear Information System (INIS)

    Objective: To determine the effect of Tamsulosin, as adjunctive medical therapy after Extracorporeal Shock Wave Lithotripsy for renal stones on rate of stone clearance, clearance time, pain intensity during stone clearance, steinstrasse formation and auxiliary surgical intervention required. Method: A prospective randomized controlled study was carried out in 120 patients who underwent ESWL for renal stones of 0.5-2.0 cm. They were randomized into study and control group in which Tamsulosin 0.4mg/day was given in former as an adjunctive medical therapy. All patients underwent ESWL every 2 weeks until complete stone clearance for 8 weeks. The parameters assessed were stone clearance, clearance time, pain intensity and effect on steinstrasse. Results: Of the 120 patients 60 were in each group. The stone clearance rate was greater in study than in control group, 58(96.7%) vs. 48(80%) respectively, (p<0.004). The mean stone clearance time was observed earlier in study group as compared to control group with significant statistical difference in stone size between 0.6-1.5 cm. The mean intensity of pain patients experienced according to Visual analogue scale (VAS) was significantly less in study group (p<0.002). The rate of steinstrasse formation was observed to be higher in control than in study group 15(25%) vs 6(10%) respectively(p<0.003), while its spontaneous clearance was higher in study group than in control group 83.3% vs 33.3% (p<0.03). Conclusion: Tamsulosin significantly increases stone clearance after shock wave lithotripsy for renal stones. It also appeared to facilitate earlier stone clearance, reduces severity of pain, reduces the incidence of steinstrasse formation and tends to facilitate its spontaneous clearance. (author)

  2. Association with meteo-climatological factors and daily emergency visits for renal colic and urinary calculi in Cuneo, Italy. A retrospective observational study, 2007-2010

    Science.gov (United States)

    Condemi, Vincenzo; Gestro, Massimo; Dozio, Elena; Tartaglino, Bruno; Corsi Romanelli, Massimiliano Marco; Solimene, Umberto; Meco, Roberto

    2015-03-01

    The incidence of nephrolithiasis is rising worldwide, especially in women and with increasing age. Incidence and prevalence of kidney stones are affected by genetic, nutritional, and environmental factors. The aim of this study is to investigate the link between various meteorological factors (independent variables) and the daily number of visits to the Emergency Department (ED of the S. Croce and Carle Hospital of Cuneo for renal colic (RC) and urinary stones (UC) as the dependent variable over the years 2007-2010. The Poisson generalized regression models (PGAMs) have been used in different progressive ways. The results of PGAMs (stage 1) adjusted for seasonal and calendar factors confirmed a significant correlation ( p 1), with a first peak after 5 days (lag ranges 0-1, 0-3, and 0-5) and a second weak peak observed along the 5-15 lag range days. The estimated RR for females was significant, mainly in the second and fourth age group considered (19-44 and >65 years): RR for total ED visits 1.27, confidence interval (CI) 1.11-1.46 (lag 0-5 days); RR 1.42, CI 1.01-2.01 (lag 0-10 days); and RR 1.35, CI 1.09-1.68 (lag 0-15 days). The research also indicated a moderate involvement of the thermal factor in the onset of RC caused by UC, exclusively in the female sex. Further studies will be necessary to confirm these results.

  3. Association with meteo-climatological factors and daily emergency visits for renal colic and urinary calculi in Cuneo, Italy. A retrospective observational study, 2007-2010.

    Science.gov (United States)

    Condemi, Vincenzo; Gestro, Massimo; Dozio, Elena; Tartaglino, Bruno; Corsi Romanelli, Massimiliano Marco; Solimene, Umberto; Meco, Roberto

    2015-03-01

    The incidence of nephrolithiasis is rising worldwide, especially in women and with increasing age. Incidence and prevalence of kidney stones are affected by genetic, nutritional, and environmental factors. The aim of this study is to investigate the link between various meteorological factors (independent variables) and the daily number of visits to the Emergency Department (ED of the S. Croce and Carle Hospital of Cuneo for renal colic (RC) and urinary stones (UC) as the dependent variable over the years 2007-2010.The Poisson generalized regression models (PGAMs) have been used in different progressive ways. The results of PGAMs (stage 1) adjusted for seasonal and calendar factors confirmed a significant correlation (p nonlinear models (DLNMs)-stage 2], expressed in terms of relative risk (RR) and cumulative relative risk (RRC), indicated a relative significant effect up to 15 lag days of lag (RR > 1), with a first peak after 5 days (lag ranges 0-1, 0-3, and 0-5) and a second weak peak observed along the 5-15 lag range days. The estimated RR for females was significant, mainly in the second and fourth age group considered (19-44 and >65 years): RR for total ED visits 1.27, confidence interval (CI) 1.11-1.46 (lag 0-5 days); RR 1.42, CI 1.01-2.01 (lag 0-10 days); and RR 1.35, CI 1.09-1.68 (lag 0-15 days). The research also indicated a moderate involvement of the thermal factor in the onset of RC caused by UC, exclusively in the female sex. Further studies will be necessary to confirm these results. PMID:24970114

  4. Intrasinusal pyelolithotomy for giant staghorn calculi%肾窦内肾盂切开取石治疗巨大鹿角状肾结石

    Institute of Scientific and Technical Information of China (English)

    郑一山; 葛卫军

    2004-01-01

    目的探讨巨大鹿角状肾结石的手术方法.方法采用肾窦内肾盂切开取石术治疗巨大鹿角状肾结石68例.结果68例患者均取石成功.平均手术时间117min;术中需输血者9例,平均输血量450ml.术后复查B超或KUB平片,6例有肾内残余结石,但直径均小于0.8 cm.结论肾窦内肾盂切开取石术治疗巨大鹿角状肾结石效果满意,操作简便、安全、易掌握.

  5. 肾窦内肾盂切开取石术治疗巨大鹿角形肾结石%Intrasinusal pyelolithotomy for giant staghorn calculi

    Institute of Scientific and Technical Information of China (English)

    陈映鹤; 陈志勇; 何有华; 张磊

    2002-01-01

    目的提高手术治疗巨大鹿角形肾结石的疗效. 方法采用肾窦内肾盂切开取石术治疗巨大鹿角形肾结石患者22例. 结果 22例患者均取石成功.平均手术时间116 min;术中需输血者8例,平均输血量550 ml.无术后继发出血和感染等并发症.12例术后2~6个月内复查B超,3例肾内残余结石,直径均<0.8 cm. 结论肾窦内肾盂切开取石术治疗巨大鹿角形肾结石效果满意,操作简便、安全、易掌握.

  6. OT位ESWL与URL治疗输尿管下段结石比较%Comparison OT ESWL and URL in treatment of lower ureteral calculi

    Institute of Scientific and Technical Information of China (English)

    左庆军; 王国增; 章璟; 顾燕; 杨佳伟; 贾德升

    2014-01-01

    目的 通过比较OT位体外冲击波碎石术(ESWL)和输尿管镜钬激光碎石术(URL)治疗输尿管下段结石的结石排净率和卫生经济学,研究经济有效的治疗手段.方法 将120例输尿管下段结石患者分为2组,OT位ESWL组与URL组,ESWL组60例患者采用OT位体外冲击波碎石术,URL组60例患者采用输尿管镜钬激光碎石术.结果 术后3d的排石率、排净率,URL组明显高于OT位ESWL组,2组差异有统计学意义(P<0.05);术后2周、3个月的排石率、排净率,URL组高于OT位ESWL组,但2组差异无统计学意义(P>0.05);手术时间、效率商(EQ)URL组明显低于OT位ESWL组,差异有统计学意义(P<0.05);住院时间、住院花费:URL组明显高于OT位ESWL组,2组差异有统计学意义(P<0.05);并发症率URL组低于OT位ESWL组,2组差异无统计学意义(P>0.05).结论 OT位ESWL、URL均是输尿管下段结石高效安全的治疗方法,OT位ESWL结石的排净率低于URL,但URL治疗周期及住院花费高于OT位ESWL.

  7. Evaluation of anti-urolithiatic effect of aqueous extract of Bryophyllum pinnatum (Lam.) leaves using ethylene glycol-induced renal calculi

    OpenAIRE

    Apexa Bhanuprasad Shukla; Divyesh Rasikbhai Mandavia; Manish Jasmatbhai Barvaliya; Seema Natvarlal Baxi; Chandrabhanu Rajkishore Tripathi

    2014-01-01

    Materials and Methods : Thirty-six Wistar male rats were randomly divided into six equal groups. Group A animals received distilled water for 28 days. Group B to group F animals received 1% v/v ethylene glycol in distilled water for 28 days and group B served as ethylene glycol control. Groups C and D (preventive groups) received aqueous extract of leaves of B. pinnatum 50 and 100 mg/kg intraperitoneally, respectively for 28 days. Groups E and F (treatment groups) received aqueous extract of ...

  8. Effect of Supine vs Prone Position on Outcomes of Percutaneous Nephrolithotomy in Staghorn Calculi: Results From the Clinical Research Office of the Endourology Society Study

    DEFF Research Database (Denmark)

    Astroza, Gaston; Lipkin, Michael; Neisius, Andreas;

    2013-01-01

    To analyze the effect of patient positioning on outcomes of percutaneous nephrolithotomy (PNL) among patients with staghorn stones. The choice of optimal position for these patients undergoing PNL remains challenging. No previous studies exclusively addressing this point have been performed....

  9. Treatment of Solitary Kidney Calculi with Percutaneous Nephrolithotomy%经皮肾镜取石术治疗孤立肾肾结石

    Institute of Scientific and Technical Information of China (English)

    王彭; 于江; 张建军

    2011-01-01

    目的 评估经皮肾镜取石术(PNL)治疗孤立肾肾结石的安全性及有效性.方法 回顾性分析接受PNL治疗的孤立肾肾结石患者10例的临床资料.结果 10例患者中9例行一期PNL,1例先行经皮肾穿刺造瘘术,1周后行二期PNL,均为单通道穿刺取石,手术时间35~220 min,平均118.8 min,无出血、感染等并发症发生.术后尿路平片(KUB)示8例结石清除干净,2例残存结石者行体外冲击波碎石(ESWL).随访6~12个月,肾功能不全的3例患者肾功能恢复正常.结论 PNL治疗孤立肾肾结石安全可行,疗效确切,具有创伤小、恢复快、可反复操作等优点.

  10. Towards evidence-based emergency medicine: best BETs from the Manchester Royal Infirmary. BET 4: Alpha blockers v calcium blockers to increase spontaneous passage of renal calculi.

    Science.gov (United States)

    Stewart, Alexander; Ferguson, Craig

    2013-02-01

    A short cut review was carried out to establish the administration of an alpha-1 receptor antagonist or a calcium channel blocker would facilitate the most rapid and successful expulsion of a stone from a patient with uncomplicated renal colic. 597 articles were found using the reported search, of which five trials were selected as providing the best evidence to answer this question. The authors, date and country of publication, patient group studied, study type, relevant outcomes, results and study weaknesses of these papers are tabulated. It is concluded that in a patient with an uncomplicated ureteric calculus tamsulosin is more effective than nifedipine in promoting speedy and successful expulsion of the stone.

  11. 压电晶体碎石机B超定位治疗输尿管下段结石%Therapy of lower ureter calculi in situ using ESWL with the B - us locatizer

    Institute of Scientific and Technical Information of China (English)

    魏明; 史启铎; 张祖诏

    2001-01-01

    目的:改变传统药物和手术治疗输尿管下段结石的方法,B超定位行ESWL治疗输尿管下段结石.方法:使用PIEZOLITH2300和PIEZO LITH2501型体外冲击波碎石机B超定位治疗输尿管下段结石.结果:3 543例输尿管下段结石用ESWL治疗,治疗成功率达99.7%.结论:本方法是治疗输尿管下段结石的首选治疗手段,可以在临床广泛推广应用.

  12. Pyelolithotomy with pneumatic lithotripsy in treating large renal calculi%肾盂切开配合气压弹道碎石治疗巨大肾结石体会

    Institute of Scientific and Technical Information of China (English)

    王小勇; 叶正辉; 赖炳旺; 吴石萍; 叶志萍; 肖娜

    2009-01-01

    目的 探讨肾盂切开配合气压弹道碎石治疗巨大肾结石的临床疗效.方法 总结分析在肾盂切开取石术中配合气压弹道碎石技术治疗46例巨大肾盂及肾铸型结石患者的临床资料.结果 46例患者均取石成功,平均手术时间136min,术中平均出血量约120mL,术后1周复查B超和KUB,结石1次取尽者41例(41/46);5例(5/46)结石残留,直径约0.5~0.8 cm,结合体外碎石,1个月后复查B超和KUB,结石排尽.结论 肾盂切开配合气压弹道碎石治疗巨大肾结石,可避免行广泛肾实质切开,可更好地保护肾功能及减少术中出血量,降低复杂肾结石的手术难度和残石率.

  13. 内镜在复杂性肾结石开放手术中的应用分析%Application of Endoscopic Technique in Intrasinusal Pyelolithotomy for Complex Renal Calculi

    Institute of Scientific and Technical Information of China (English)

    柯昌兴; 王剑松; 左毅刚; 杨德林; 颜汝平; 丁明霞; 刘靖宇; 王伟; 詹辉

    2010-01-01

    目的 探讨内镜在肾窦内肾盂切开取石术治疗复杂性肾结石的临床应用价值.方法 对62例复杂性肾结石患者行肾窦内肾盂切开取石,直视下或用取石钳尽量取出肾盂和各盏结石,用不同的内镜配合碎石机击碎残石.结果 肾窦内肾盂切开取石+内镜下碎石术均获得成功.手术时间为112~225 min,术中出血量为10~100 ml.其中59例结石一次性取尽,2例残留小结石自行排除,1例残留结石经体外冲击波碎石术(ESWL)治疗后排出.术中肾盂撕裂2例,术后发热7例,腹胀4例.无大出血、胸膜损伤、肠道损伤、肾蒂损伤、肾周感染、继发性高血压等并发症发生.结论 肾窦内肾盂切开取石+内镜下碎石术治疗复杂性肾结石,基本达到了取尽结石同时把肾损伤降到最低的目的.

  14. Application of double-J stent inserter in laparoscopic pyelolithotomy/ureterolithotomy for upper urinary tract calculi%双J管置入器在腹腔镜上尿路切开取石术中的应用

    Institute of Scientific and Technical Information of China (English)

    钟辛; 江波; 邹晓峰; 袁源湖; 肖日海; 张国玺; 伍耿青; 王晓宁; 薛义军

    2013-01-01

    目的:评价腹腔镜输尿管双J管置入器对腹腔镜上尿路切开取石术中双J管置入时间的影响,探讨其在腹腔镜上尿路切开取石术中的应用价值.方法:应用自主研发的腹腔镜输尿管双J管置入器施行腹腔镜上尿路切开取石术30例(A组),其中后腹腔镜术(RPL)(A1组)和耻骨上辅助经脐单孔腹腔镜术(SA-LESS)(A2组)各15例.男18例,女1 2例.年龄18~51岁,平均38.6岁.肾盂结石4例,输尿管上段结石21例,输尿管中段结石5例.左侧17例,右侧13例.未使用双J管置入器施行腹腔镜上尿路切开取石术30例(B组),其中RPL(B1组)和SA-LESS(B2组)各15例.男20例,女10例.年龄21~56岁,平均36.8岁.肾盂结石3例,输尿管上段结石23例,输尿管中段结石4例.左侧14例,右侧16例.比较两组术中放置双J管的时间.结果:A、B两组手术均顺利完成,60例60侧结石均一次取净.术中术后无输尿管切开处断裂及腹腔脏器损伤、大出血、漏尿等并发症发生.术中放置双J管时间:A组2~8 min,平均3.4 min;其中A1组2~6 min,平均3.1 min;A2组2~8 min,平均3.8 min.B组6~22 min,平均11.4 min;其中B1组6~18 min,平均10.2 min;B2组6~22 min,平均12.8 min.两两比较,A组<B组,A1组<B1组,A2组<B2组(P<0.05).结论:自主研发的腹腔镜输尿管双J管置入器使用安全、简便,可以显著降低腹腔镜下放置双J管的难度,缩短置管时间,尤其适用于腹腔镜技术初学者.

  15. Treatment of complex renal calculi with transinusal pyelolithotomy and renal parenchyma incision%肾窦内肾盂加肾实质联合切口治疗复杂性肾结石

    Institute of Scientific and Technical Information of China (English)

    刘涛; 陈安屏; 李海平; 林昀; 卢思保

    2002-01-01

    目的探讨治疗复杂性肾结石的手术方法.方法对采用肾窦内肾盂加肾实质联合切开术治疗的36例复杂性肾结石患者的临床资料进行回顾性分析.结果肾结石全部取净,术中不需要阻断肾蒂及局部低温处理,平均术中出血300ml,平均手术时间120 min.术后B超或KUB检查,4例患者肾内有残余结石.结论 本手术方式符合肾动脉及其分支的解剖,肾损伤最小,手术步骤简单,易掌握,术中出血少,易取净结石,是较为合理的手术方法.

  16. Intrasinusal pyelolithotomy in the treatment of staghorn calculi:a report of 26 cases%肾窦内肾盂切开取石术治疗鹿角形肾结石26例分析

    Institute of Scientific and Technical Information of China (English)

    涂和平; 汪开保

    2013-01-01

    目的 探讨肾窦内肾盂切开取石术治疗鹿角形肾结石的技巧及疗效.方法 采用切开肾窦脂肪包膜隔后切开肾窦内肾盂切开取石术治疗鹿角形结石患者26例.结果 26例患者均成功取石.平均手术时间为92 min,术中输血1例,输血400 ml,术后无继发感染出血等并发症.16例术后2~6个月复查B超,发现4例肾内残余小结石,直径<0.4 mm.结论 肾窦内肾盂切开取石治疗鹿角形肾结石,疗效确切,安全操作简单,肾损伤轻,是治疗鹿角形肾结石较为理想的方法.

  17. Experiences of Pyelolithotomy Ballistic Lithotripsy Treating the Renal Staghorn Calculi%鹿角型肾结石肾盂切开直视下气压弹道碎石治疗体会

    Institute of Scientific and Technical Information of China (English)

    李文科; 郑宏; 周时湘

    2007-01-01

    目的 总结肾盂切开直视下气压弹道碎石治疗复杂性鹿角型肾结石的临床体会.方法 采用肾盂切开直视下气压弹道碎石治疗18例鹿角型肾结石患者,观察其效果,并进行总结.结果 14例均成功取净结石,余4例因肾实质变薄,采用肾皮质切开直视下气压胆道碎石而成功取石.术中未发生大出血.平均住院时间14d.肾功能不全6例患者术后恢复正常,2例明显好转.随访半年未出现肾盏积液.结论 肾盂切开直视下气压弹道碎石治疗鹿角型结石,避免了损伤肾、肾盂、大血管而并发大出血的危险.保护了肾功能,是一种治疗鹿角型结石的有效方法.

  18. 肾盂背侧肾实质切开术治疗巨大鹿角形肾结石临床研究%Incision of posterior lip and pyelolithotomy in the treatment of renal giant staghorn calculi

    Institute of Scientific and Technical Information of China (English)

    文卫军; 黄晓峰; 梁光远; 曾浩泉

    2005-01-01

    目的提高手术治疗巨大鹿角形肾结石的疗效.方法采用肾盂背侧肾实质切开取石术治疗巨大鹿角形肾结石患者78例.结果全部病例均顺利取出结石.平均手术时间110min,术中需输血者25例,平均输血量400ml,无术后继发出血或感染等并发症.40例术后2个月~1年内复查B超或X线,6例残留小结石,直径均<0.6cm.结论肾盂背侧肾实质切开取石术具有显露充分,操作简便、安全,结石取净率高,损伤少等优点.

  19. Intrasinusal pyelolithotomy for giant staghorn calculi%肾窦内肾盂切开取石术治疗肾巨大铸形结石(附57例报告)

    Institute of Scientific and Technical Information of China (English)

    麦能斌; 尹杰; 何国伟; 陈向新; 林靖波

    2004-01-01

    目的探讨肾巨大铸形结石的治疗方法.方法采用肾窦内肾盂切开取石术治疗肾巨大铸形结石57例.结果本组57例均取石成功,疗效满意.1例术后继发出血,需要再次手术止血;3例因残留结石下移至输尿管导致梗阻,形成尿漏,需作输尿管镜下气压弹道碎石,留置双J管;30例病人术后1-6个月内复查KUB;8例证实残留结石直径均小于9mm,再行ESWL.结论肾窦内肾盂切开取石术是治疗肾巨大铸形结石的一种有效方法,安全、可靠、易掌握,对肾功能损害较小.

  20. Treatment of 34 patients with staghorn calculi by pyelolithotomy supplement with PL and fiberendoscope%肾盂切开联合PL及纤维内镜下取石治疗肾鹿角状结石34例

    Institute of Scientific and Technical Information of China (English)

    李兴斌; 陈善勤

    2003-01-01

    目的总结肾盂切开术中采用气压弹道碎石(PL)及纤维内镜下套石篮取石治疗肾鹿角状结石的临床疗效.方法术中PL将结石碎成小块取出,残留于各小盏及黏附于肾盂粘膜的结石在纤维内镜下用套石篮取出.结果结石碎成小块易于取出,结合纤维内镜下套石篮取石,结石取净率达94.1%.结论该方法安全、易掌握、疗效肯定、损伤小.

  1. Pyelolithotomy Combined with Holmium Laser Lithotripsy for Complex Renal Calculi%肾盂切开联合钬激光碎石术治疗复杂性肾结石体会

    Institute of Scientific and Technical Information of China (English)

    向俾钱; 杨明文; 吴洪涛

    2010-01-01

    目的 比较肾盂切开联合钬激光碎石及传统肾盂肾窦肾实质切开取石治疗复杂性肾结石的疗效.方法 回顾性分析65例复杂性肾结石的临床资料,其中行肾盂肾窦肾实质联合切开取石35例(A组),肾盂切开联合钬激光碎石30例(B组).结果 A组出血量(288.5±81.3)ml,明显多于B组的(49.0±25.8)ml(P0.05).A组术后发生血尿2例,残石4例,无功能性肾萎缩2例; B组术后发生血尿3例,经对症处理均痊愈.结论 肾盂切开联合钬激光碎石治疗复杂性肾结石符合微创发展趋势,术中出血少,对肾脏损伤小,是临床治疗复杂性肾结石一种可行的术式.

  2. 切开肾门后唇的肾盂切开取石术治疗巨大鹿角形肾结石%Incision of renal posterior lip pyelolithotomy for the removal of renal giant staghorn calculi

    Institute of Scientific and Technical Information of China (English)

    王诗建; 曹用立; 张沛永; 秦允清; 朱继峰

    2005-01-01

    目的探讨巨大鹿角形肾结石的手术方法及其疗效.方法对41例巨大鹿角形肾结石患者行切开肾后唇的肾孟切开取石术的临床资料进行回顾性分析.结果41例均顺利取石,术中未损伤后段血管,肾功能恢复好;残留小结石4例,尿漏2例.结论本术式不阻断肾蒂,操作简单,显露充分,出血少,结石取净率高,对肾功能影响小,是治疗巨大鹿角形肾结石较理想的手术方法.

  3. 肾盂切开气压弹道碎石治疗鹿角形肾结石(附46例报告)%Treatment of staghorn calculi with pyelolithotomy and ballast lithotripsy(report of 46 cases)

    Institute of Scientific and Technical Information of China (English)

    董洪海; 郭晓辉; 周均洪; 陈志雄; 唐炎权

    2006-01-01

    目的探讨肾盂切开气压弹道碎石治疗鹿角形肾结石的疗效.方法对46例鹿角形肾结石采用肾盂切开气压弹道碎石,将结石分解成数块,再逐一取出.双侧肾结石采用一次分侧手术取石.结果46例鹿角形肾结石均较顺利取出,无黏膜撕脱、出血等并发症.25例肾功不全者均显著改善.结论肾盂切开结合气压弹道碎石是治疗鹿角形肾结石较好方法;双侧肾结石多有梗阻致肾功能受损,应双侧一次取石,有利于双肾功能恢复.

  4. Treatments of complexed renal calculi by kidney transinusal pyelolithotomy and kidney substance incision%肾窦内肾盂及肾实质切开取石治疗复杂性肾结石

    Institute of Scientific and Technical Information of China (English)

    戴永乐; 曾金云; 杨顺银

    2007-01-01

    目的 探讨复杂性肾结石的手术治疗方法.方法 采用肾窦内肾盂及肾实质切开取石治疗复杂性肾结石.结果 89例复杂性肾结石经肾窦内肾盂及肾实质切开取石治疗,平均手术时间约130 min,术中出血平均约200mL,取尽结石86例,术后常规B超或KUB检查,3例残留单个小结石.结论 肾窦内肾盂及肾实质切开取石符合肾动脉及其分支的解剖,距结石较近,该手术操作简便、手术野暴露好、结石残留率低、无需阻断肾血流、出血少、肾组织损伤轻,对肾功能影响小,是治疗复杂性肾结石较理想的手术方法.

  5. Intrasinusal pyelolithotomy and nephrolithotomy in the treatment of renal complex calculi%肾窦内肾盂加肾实质切开治疗复杂性肾结石

    Institute of Scientific and Technical Information of China (English)

    李锋; 刘铭; 丁宏毅; 李开恒; 吴正凯; 刘浩

    2003-01-01

    目的探讨复杂性肾结石手术取石方法.方法对38例复杂性肾结石病人,采用肾窦内肾盂加肾实质切开取石术.结果全部病例均取出结石,术后肾功能恢复好,小结石残留6例,并发漏尿2例,继发出血1例而行肾切除.结论本术式操作简单、出血少、对肾功能影响小,适合于复杂性肾结石的治疗.

  6. Management of the upper urinary tract calculi in patients on antiplatelet/anticoagulant therapy%抗凝药物治疗的患者合并上尿路结石的处理

    Institute of Scientific and Technical Information of China (English)

    满立波; 李贵忠

    2015-01-01

    抗凝药的使用在一般人群明显增加,这促使外科医生在给长期抗凝治疗的患者手术时需要考虑血栓和出血的风险。对于服用抗凝药物合并上尿路结石的处理尤其比较棘手。本文回顾了服用抗凝药物治疗的患者合并尿路结石处理的文献。同时汇报了北京积水潭医院采用三步法经皮肾镜处理血栓栓塞高危风险长期服用抗凝和抗血小板药物合并上尿路结石的经验。%Use of chronic anticoagulation has increased recently, leading to more surgical intervention on patients taking chronic anticoagulation. This review discusses anticoagulation and the management of urolithiasis. In this study, we would like to report our experience of performing three-step PCNLs. We identified and reviewed 3 patients under antiplatelet/anticoagulant agent therapy performed in a single institute.

  7. Calculi associated with intravenous infusion of ceftriaxone sodium in two infants%婴儿静脉输注头孢曲松钠相关结石2例

    Institute of Scientific and Technical Information of China (English)

    杨景秀; 戈升荣

    2014-01-01

    Two male infants (aged 5 months and 19 days,and 3 months and 19 days,respectively) were given an intravenous infusion of ceftriaxone sodium 0.7 g in 0.9% sodium chloride 100 ml once daily and an intravenous infusion of ceftriaxone sodium 0.6 g in 0.9% sodium chloride 50 ml once daily for bronchitis and infectious diarrhea,respectively.On day 10 and 4,white granules were found on skin surface of the two infants'oschea.There were no inflamed urinary meatus and abnormal results of routine urine tests.The white granules gradually decreased and disappeared after ceftriaxone sodium was withdrawn.%2例男婴(年龄分别为5个月19 d、3个月19 d)分别因支气管炎和感染性腹泻分别给予头孢曲松钠0.7g入0.9%氯化钠注射液100 ml静脉滴注,1次/d和头孢曲松钠0.6g入0.9%氯化钠注射液50 ml静脉滴注,1次/d.分别在用药第10、4天家长发现患儿阴囊处白色颗粒物,附于皮肤表面,尿道口无红肿,尿常规检查无异常.头孢曲松钠停用或减量后,白色颗粒物逐渐减少至消失.

  8. 无萎缩性肾切开取石术治疗单功能肾鹿角状结石%Treatment of Single Functional Kidney with Staghorn Calculi by Anatrophic Nephrolithotomy

    Institute of Scientific and Technical Information of China (English)

    程晓麟; 周德明; 迟金为; 张东青

    2003-01-01

    目的探讨无萎缩性肾切开取石术治疗单功能肾鹿角状结石的方法及疗效.方法回顾性分析18例无萎缩性肾切开取石术治疗单功能肾鹿角状结石病例资料.结果肾血流阻断时间平均为78 min,平均手术时间148 min,术中出血量平均为160ml.术后7 d经造瘘管肾盂造影,14例结石取净,4例残余小结石,术后2月行ESWL治疗,2周后结石排净.术后患者的肾功能均有不同程度的改善.结论该术式暴露清晰,取石彻底,并能改善肾功能,是单功能肾鹿角状结石首选的手术方法.

  9. 改良无萎缩性肾切开术治疗肾铸型多发性结石%Improve Anatrophic Nephrolithotomy in The Treatment Of Renal Gaint Staghorn And Multiple Renal Calculi

    Institute of Scientific and Technical Information of China (English)

    司徒灿; 张荣权; 邝玉爱; 杨文清; 庄骏; 潘耀权; 谢国均; 李建提; 余捷强

    2005-01-01

    目的本文借鉴Boyce-Smith的经验,提出对无萎缩性肾切开取石术的改进和创新,试图在治疗肾铸型多发性结石这一方面探讨一种更具安全性和实用性且便于在基层医院推广应用的手术方法.方法采用改良无萎缩性肾切开术治疗肾铸型多发性结石8例.常温下不阻断肾蒂血流,应用手法阻滞肾后动脉显示段间线,尔后根据每一例肾结石实际情况决定选择性行前后段间线、后基段间线、后尖段间线单独或联合的肾切开取石.术后一般留置输尿管导管内引流外置固定,肾旁留置思华龙硅胶管引流.结果本组35例均一次取净结石.手术入路采用前后段间线切开5例、后基段间线切开22例、后基段间线加前后段间线9例,其中6例再加后尖段间线切开.术中输血17例,平均输血350ml.腰部伤口全部一期愈合,无尿瘘发生.外置输尿管导管内引流术后7至9天拔除,平均住院14日.本组未见术后继发感染或者出血.术后半年21例KUB、IVU复查,术侧肾脏显影良好,未见残存结石.结论改良无萎缩性肾切开术,具备简便易行、安全可靠和成功率较高的特点.本文提出选择性行段间线切开,可减少不必要的肾损伤,最大限度地保护肾功能.外置输尿管导管作内引流不但免除术后经膀胱镜取管的麻烦,而且节省了医疗费用.

  10. Use of computed tomography scout film and Hounsfield unit of computed tomography scan in predicting the radio-opacity of urinary calculi in plain kidney, ureter and bladder radiographs

    Directory of Open Access Journals (Sweden)

    Michael E. Chua

    2014-01-01

    Conclusion: Urolithiases identified on the CT-scout film were also seen as radiopaque on the KUB radiograph while those stones not visible on the CT-scout film, but above the optimal HU cut-off value of 630 are also likely to be radiopaque.

  11. 输尿管软镜联合经皮肾镜治疗鹿角状肾结石的临床研究%Combination flexible and rigid endoscopy in treating staghorn calculi

    Institute of Scientific and Technical Information of China (English)

    葛广成; 李中兴; 冯瑞; 贾跃军; 钟文

    2014-01-01

    目的:分析输尿管软镜碎石术(FUL)联合经皮肾镜取石术(PCNL)治疗鹿角状肾结石的结果及并发症情况,探寻治疗鹿角状肾结石的合适方法.方法:30例鹿角状肾结石患者接受治疗,一期PCNL术中采用F20~22经皮肾通道清理大部分结石,二期手术采用FUL击碎经皮肾通道平行肾盏残留结石,必要时转二期PCNL清理残留碎石.结果:30例患者均接受联合治疗成功,术后1个月结石清除率93.3%,2例患者残留0.8~1.2 cm结石位于下盏及中盏.术后3例(10%)患者发热,2例(6.7%)患者需输血2U,无其他严重并发症.结论:采用一期PCNL清除鹿角状肾结石的大部分,二期FUL处理平行肾盏残留结石,减少了新增经皮肾通道的需要及相应的并发症,并提高了结石清除率,是鹿角状肾结石治疗的安全有效方法.

  12. Holmium laser lithotripsy for the treatment of urinary calculi: Report of 1216 cases%钬激光碎石术治疗泌尿系结石(附1 216例报告)

    Institute of Scientific and Technical Information of China (English)

    吴忠; 姜昊文; 张华魏; 陈智新; 历春军; 丁强; 张元芳

    2006-01-01

    目的探讨钬激光碎石术治疗泌尿系结石的疗效及其安全性. 方法应用输尿管肾镜和膀胱镜联合钬激光碎石术治疗1 216例泌尿系结石,其中输尿管结石1 006例(上段302例,中段364例,下段340例),膀胱结石210例. 结果1例输尿管上段结石因前列腺增生症致置镜困难改体外冲击波碎石(extracorporeal shock wave lithotripsy, ESWL)治疗.1 006例输尿管结石单次碎石成功率95.5%(961/1 006)),其中上、中、下段结石单次碎石成功率分别为89.4%(270/302)、96.4% (351/364)和100%(340/340),术中发生6例输尿管穿孔.膀胱结石单次碎石成功率为100%(210/210),无出血和膀胱穿孔发生.881例输尿管结石术后随访0.5~40个月,平均18.6月,输尿管上、中、下段结石排净率分别为91.1%(224/246)、98.5%(318/323)、100%(312/312 ),总结石排净率为96.9%(854/881);6例发生输尿管狭窄.187例膀胱结石术后随访0.5~31个月,平均12.4月,结石排净率98.4%(184/187). 结论钬激光碎石术治疗泌尿系结石疗高效、微创、安全,是输尿管结石和膀胱结石首选治疗方法.

  13. Minimally invasive percutaneous nephrolithotomy for the treatment of upper ureteral calculi:A Report of 216 cases%微创经皮肾镜取石术治疗输尿管上段结石216例

    Institute of Scientific and Technical Information of China (English)

    马宇杰; 黄志远; 杨建设; 张毅; 王威; 何育霖

    2010-01-01

    目的 探讨微创经皮肾镜取石术(minimally invasive percutaneous nephrolithotomy,MPCNL)治疗输尿管上段结石的疗效.方法 2004年7月至2010年1月对采用MPCNL治疗的216例输尿管上段结石患者的临床资料进行回顾性分析.结果 216例均为一期取石,结石清除率98.5%,平均手术时间70 min,术中平均估计出血量50 ml,无严重并发症发生.结论 MPCNL治疗输尿管上段结石,结石清除率高,创伤小,出血少,恢复快,安全有效.

  14. Effect of Social Support on Calculi Discharging after Extracorporeal Shock-wave Lithotripsy%社会支持对体外震波碎石术后排石效果的影响

    Institute of Scientific and Technical Information of China (English)

    魏克菊; 杨露静

    2009-01-01

    目的 探讨社会支持对体外震波碎石(ESWL)术后排石效果的影响.方法 应用社会支持评定量表(SSRS)、自制调查表及健康指导执行卡,对123例上尿路结石病人分为A组、B组、C组分别于术前、术后社会支持及术后排石效果进行调查,术前根据结石部位对3组病人及家属均进行相应的健康指导,观察3组病人对术后体位、运动、饮水治疗的依从性及排石效果,所有资料采用SPSS11.0统计软件包进行统计及χ2检验分析.结果 术后3组病人社会支持总分、运动及饮水依从性比较,差别有统计学意义(P<0.01);3组病人术后体位的依从性、术后3天及6天排石效果比较,差别均有统计学意义(P<0.05);结论 充分的社会支持可增强病人ESWL术后体位、运动、饮水治疗的依从性及排石效果,护士是病人住院期间最重要的社会支持来源之一.

  15. 腎洞内腎盂切石術について

    OpenAIRE

    高崎, 登

    1982-01-01

    Intransinusal pyelolithotomy was performed in 103 cases of renal calculi which could not be removed by simple pyelolithotomy. Important problems concerning the surgical procedure are presented, and the results and indication of intrasinusal pyelolithotomy are discussed. Also, the methods to find the residual calculi in renal calices, and the technique to remove these calculi, i.e., the use of small light, pyeloscope, surgical X-ray photographing during surgery and coagulum pyelolithotomy are ...

  16. Familial prostatic calcification in childhood associated with cranial-bone thickening: Review of literature and report of three cases

    OpenAIRE

    Rifat, Usama Nihad; Mohammed, Mustafa

    2011-01-01

    Objectives To review the few published cases of prostatic calculi, a rare condition in children, and to report three further cases. Methods The databases PUBMED and HINARI were searched using the keywords ‘childhood’ and ‘prostatic calculi’; the search included reports from 1956 to the present. Further cases from three families with children having prostatic calculi are reported here. Results Four cases were recorded previously but no association was stated between the presence of calculi and...

  17. CONTROL CLINICAL EVALUATION OF KULATTHADI YOGA AS ASHMARIBHEDAN IN MUTRASHMARI

    OpenAIRE

    Jangle Vidya Muralidhar; Reddy Govind R; Waghmare Suryakant Dnyaneshwar

    2012-01-01

    Urolithiasis, a presence of calculi single or multiple in renal or urinary tracks is a clinical entity which has been universally accepted as problematic condition regarding its treatment in all systems of medical science. There is no known drug therapy at present which dissolves or fragments the calculi by changing lithogenic potential of particular person. Urinary calculi disease has been described in detail under the heading of Ashmari in Ayurvedic texts. Ashmari is one of the few surgical...

  18. Urinary stone detection and characterisation with dual-energy CT urography after furosemide intravenous injection: preliminary results

    Energy Technology Data Exchange (ETDEWEB)

    Botsikas, Diomidis; Hansen, Catrina; Stefanelli, Salvatore; Becker, Christoph D.; Montet, Xavier [Geneva University Hospital, Radiology Department, Geneva (Switzerland)

    2014-03-15

    To investigate the added advantage of IV furosemide injection and the subsequent urine dilution in the detection of urinary calculi in the excretory phase of dual-source dual-energy (DE) computed tomography (CT) urography, and to investigate the feasibility of characterising the calculi through diluted urine. Twenty-three urinary calculi were detected in 116 patients who underwent DECT urography for macroscopic haematuria with a split bolus two- or three-acquisition protocol, including a true unenhanced series and at least a mixed nephrographic excretory phase. Virtual unenhanced images were reconstructed from contrast-enhanced DE data. Calculi were recorded on all series and characterised based on their X-ray absorption characteristics at 100 kVp and 140 kVp in both true unenhanced and nephrographic excretory phase series. All calculi with a diameter more than 2 mm were detected in the virtual unenhanced phase and in the nephrographic excretory phase. Thirteen of these calculi could be characterised in the true unenhanced phase and in the mixed nephrographic excretory phase. The results were strictly identical for both phases, six of them being recognised as non-uric acid calculi and seven as uric acid calculi. Mixed nephrographic excretory phase DECT after furosemide administration allows both detection and characterisation of clinically significant calculi, through the diluted urine. (orig.)

  19. Urinary stone detection and characterisation with dual-energy CT urography after furosemide intravenous injection: preliminary results

    International Nuclear Information System (INIS)

    To investigate the added advantage of IV furosemide injection and the subsequent urine dilution in the detection of urinary calculi in the excretory phase of dual-source dual-energy (DE) computed tomography (CT) urography, and to investigate the feasibility of characterising the calculi through diluted urine. Twenty-three urinary calculi were detected in 116 patients who underwent DECT urography for macroscopic haematuria with a split bolus two- or three-acquisition protocol, including a true unenhanced series and at least a mixed nephrographic excretory phase. Virtual unenhanced images were reconstructed from contrast-enhanced DE data. Calculi were recorded on all series and characterised based on their X-ray absorption characteristics at 100 kVp and 140 kVp in both true unenhanced and nephrographic excretory phase series. All calculi with a diameter more than 2 mm were detected in the virtual unenhanced phase and in the nephrographic excretory phase. Thirteen of these calculi could be characterised in the true unenhanced phase and in the mixed nephrographic excretory phase. The results were strictly identical for both phases, six of them being recognised as non-uric acid calculi and seven as uric acid calculi. Mixed nephrographic excretory phase DECT after furosemide administration allows both detection and characterisation of clinically significant calculi, through the diluted urine. (orig.)

  20. De Rham complexes of q-analogue of general linear group GLq(N)

    International Nuclear Information System (INIS)

    In this paper we give a set of De Rham complexes of quantum group GLq(N) determined by one parameter r, and prove that the differential calculi on the quantum group GLq(N) given in this paper are bicovariant. The noncommutative differential calculi on the quantum groups SLq(N) and SUq(N) are also discussed. (author). 15 refs

  1. Initialized Fractional Calculus

    Science.gov (United States)

    Lorenzo, Carl F.; Hartley, Tom T.

    2000-01-01

    This paper demonstrates the need for a nonconstant initialization for the fractional calculus and establishes a basic definition set for the initialized fractional differintegral. This definition set allows the formalization of an initialized fractional calculus. Two basis calculi are considered; the Riemann-Liouville and the Grunwald fractional calculi. Two forms of initialization, terminal and side are developed.

  2. Ultrasonographic diagnosis of urinary calculus caused by melamine in children

    Institute of Scientific and Technical Information of China (English)

    JIA Li-qun; SHEN Ying; WANG Xiao-man; HE Le-jian; XIN Yue; HU Yan-xiu

    2009-01-01

    Background Intake of melamine can cause renal and ureteral lithiasis in infants and children. The present study aimed to understand the value of ultrasonography in the diagnosis of renal and ureteral lithiasis in infants and young children caused by melamine, and the characteristics of ultrasonograms of melamine-associated calculi.Methods Ultrasonographic examination on the urinary system was performed for 28 332 children who ingested milk powder that was possibly tainted with melamine; 395 of the children were diagnosed by ultrasonography as having urinary calculus, and 231 cases had lump-like calculi and 164 cases had sand gravel-like calculi. The features of the calculi, the sites of obstruction and the status of hydronephrosis and hydroureterosis were analyzed. Ultrasonographic reexamination was performed for 116 patients and the findings were compared with those of the first ultrasonography, and the short-term expulsion of the calculi was evaluated.Results Most of the 395 patients with urinary lithiasis, except for those who developed renal failure, had no symptoms. The whole profile of the calculi could be seen in most of the cases, because the echogenicity of the calculi with no sharp or absent acoustical shadowing, was weaker as compared with those from calcium-containing calculi. Comet tail sign could be seen behind the echogenicity of single gravel calculus. The rate of diagnostic consistency of ureteral lithiasis between the ultrasound and the results of clinical observation (including stones expelled spontaneously or after cystoscopic intervention) in 51 cases for 76 ureters was 100%. Percutaneous renal biopsy was performed for one case, and histopathological examination showed flocculent, fine strip-like, ellipse and circular deeply stained sand gravel-like material in the renal tubules, and the circular calculi were found to be attached to the walls of the tubules. Chemical analysis of the calculi expelled from 12 cases showed that the main contents

  3. Acute calculous cholecystitis with patent cystic duct

    Energy Technology Data Exchange (ETDEWEB)

    Massie, J.D.; Moinuddin, M.; Phillips, J.C.

    1983-07-01

    In the diagnosis of acute cholecystitis, the interpretation of cholescintigraphy is usually not difficult. It is conceivable, however, that wth unusual location of obstructing calculi atypical images could result. Three cases were studied with cholescintigraphy and one with cholecystography in which more distal locations of obstructing calculi resulted in partial visualization of the gallbladder and erroneous interpretations were possible. Nuclear medicine radiologists should, therefore, be aware that atypical gallbladder images may be the result of unexpected location of obstructing calculi. Clues for assisting in interpretation are offered.

  4. Weight Loss Surgery: An Option for Teens?

    Science.gov (United States)

    ... Living Healthy Living Healthy Living Nutrition Fitness Sports Oral Health Emotional Wellness Growing Healthy Sleep Safety & Prevention Safety & ... Late onset​ ​Cholecystitis Dysphagia Gastroesophageal reflux Incisional hernia Malnutrition Pancreatitis Ulcers Renal calculi Internal hernia Small bowel ...

  5. Q-Deformed Path Integral

    OpenAIRE

    Chaichian, M.; Demichev, A. P.

    1993-01-01

    Using differential and integral calculi on the quantum plane which are invariant with respect to quantum inhomogeneous Euclidean group E(2)q , we construct path integral representation for the quantum mechanical evolution operator kernel of q-oscillator.

  6. Laparoscopic pyelolithotomy--a technique for the management of stones in the ectopic pelvic kidney.

    Science.gov (United States)

    Kamat, Nagesh; Khandelwal, Pankaj

    2004-07-01

    We present our preliminary experience with the technique of laparoscopic pyelolithotomy for ectopic pelvic kidney calculi. This surgery has low morbidity and is ideally suited for the ectopic pelvic kidney with a laterally or anteriorly directed pelvis. PMID:15242377

  7. Renal stone disease: Pathogenesis, prevention, and treatment

    International Nuclear Information System (INIS)

    This book contains 10 chapters. Some of the chapter titles are: Radiologic considerations; Physiochemistry of urinary stone formations; Nutritional aspects of stone disease; Prevention of recurrent nephrolithiasis; Struvite stones; and Contemporary approaches to removal of renal and ureteral calculi

  8. Ureteroscopy-Assisted Retrograde Nephrostomy (UARN) after Anatrophic Nephrolithotomy.

    Science.gov (United States)

    Kawahara, Takashi; Ito, Hiroki; Terao, Hideyuki; Kato, Yoshitake; Ogawa, Takehiko; Uemura, Hiroji; Kubota, Yoshinobu; Matsuzaki, Junichi

    2012-01-01

    Introduction. Open surgical anatrophic nephrolithotomy (ANL) had been the standard treatment for large renal calculi prior to the development of endoscopic devices and endoscopic techniques. A previous report described the efficacy of ureteroscopy-assisted retrograde nephrostomy (UARN) and presented a case of renal calculi successfully treated with UARN during percutaneous nephrolithotomy (PCNL) in a patient after ANL. Case Presentation. A 61-year-old male with left renal calculi was referred for further treatment. The patient was placed under general and epidural anesthesia, in a Galdakao-modified Valdivia position. A flexible ureteroscope (URS) was inserted, and a Lawson retrograde nephrostomy puncture wire was advanced into the flexible URS. The puncture wire then followed the route from the renal pelvis to the exit skin. Calculus fragmentation was undertaken using a pneumatic lithotripter. Conclusions. UARN for PCNL was therefore found to be a safe, effective, and appropriate treatment for a patient presenting with renal calculi after undergoing ANL.

  9. Ureteroscopy-Assisted Retrograde Nephrostomy (UARN after Anatrophic Nephrolithotomy

    Directory of Open Access Journals (Sweden)

    Takashi Kawahara

    2012-01-01

    Full Text Available Introduction. Open surgical anatrophic nephrolithotomy (ANL had been the standard treatment for large renal calculi prior to the development of endoscopic devices and endoscopic techniques. A previous report described the efficacy of ureteroscopy-assisted retrograde nephrostomy (UARN and presented a case of renal calculi successfully treated with UARN during percutaneous nephrolithotomy (PCNL in a patient after ANL. Case Presentation. A 61-year-old male with left renal calculi was referred for further treatment. The patient was placed under general and epidural anesthesia, in a Galdakao-modified Valdivia position. A flexible ureteroscope (URS was inserted, and a Lawson retrograde nephrostomy puncture wire was advanced into the flexible URS. The puncture wire then followed the route from the renal pelvis to the exit skin. Calculus fragmentation was undertaken using a pneumatic lithotripter. Conclusions. UARN for PCNL was therefore found to be a safe, effective, and appropriate treatment for a patient presenting with renal calculi after undergoing ANL.

  10. Renal stone disease: Pathogenesis, prevention, and treatment

    Energy Technology Data Exchange (ETDEWEB)

    Pak, C.Y.C.

    1987-01-01

    This book contains 10 chapters. Some of the chapter titles are: Radiologic considerations; Physiochemistry of urinary stone formations; Nutritional aspects of stone disease; Prevention of recurrent nephrolithiasis; Struvite stones; and Contemporary approaches to removal of renal and ureteral calculi.

  11. ARTIFICIAL NEURAL-NETWORK PREDICTIONS OF URINARY CALCULUS COMPOSITIONS ANALYZED WITH INFRARED-SPECTROSCOPY

    NARCIS (Netherlands)

    VOLMER, M; WOLTHERS, BG; METTING, HJ; DEHAAN, THY; COENEGRACHT, PMJ; VANDERSLIK, W

    1994-01-01

    Infrared (IR) spectroscopy is used to analyze urinary calculus (renal stone) constituents. However, interpretation of IR spectra for quantifying urinary calculus constituents in mixtures is difficult, requiring expert knowledge by trained technicians. In our laboratory IR spectra of unknown calculi

  12. Calcified gallstone fissures: the reversed Mercedes Benz sign.

    Science.gov (United States)

    Strijk, S P

    1987-01-01

    This article describes the occurrence of an unusual radiating pattern of calcification in the center of large radiolucent gallstones. The radiographic findings are attributed to calcium deposition within the fissures of biliary calculi. PMID:3556975

  13. Kidney stones - self-care

    Science.gov (United States)

    Renal calculi - self-care; Nephrolithiasis - self-care; Stones - kidney - self-care ... You visited your health care provider or the hospital because you have a kidney stone. You will need to take self-care steps. Which steps ...

  14. Unenhanced spiral CT in Urolithiasis: indication, performance and interpretation

    International Nuclear Information System (INIS)

    Unenhanced spiral computed tomography is now applied in the investigation of patients with acute flank pain to search for suspected urinary tract calculi. Spiral CT can depict urinary calculi more accurately than plain radiographs, sonography or excretory urography, and can be performed using a low dose protocol. Almost all urinary calculi, including calculi composed of uric acid, xanthine and cystine, can be detected. In addition to determining size and location of the stone, unenhanced helical CT can predict its composition. Furthermore, it reveals secondary signs of obstruction, such as dilatation of the renal collecting system and perinephric stranding. In the absence of urolithiasis, CT can frequently detect or exclude other causes of acute flank pain, thus guiding subsequent imaging and the therapeutic management. (orig.)

  15. The Name-Passing Calculus

    OpenAIRE

    Fu, Yuxi; Zhu, Han

    2015-01-01

    Name-passing calculi are foundational models for mobile computing. Research into these models has produced a wealth of results ranging from relative expressiveness to programming pragmatics. The diversity of these results call for clarification and reorganization. This paper applies a model independent approach to the study of the name-passing calculi, leading to a uniform treatment and simplification. The technical tools and the results presented in the paper form the foundation for a theory...

  16. Effects of hydrochlorothiazide on kidney stone therapy with extracorporeal shock wave lithotripsy

    OpenAIRE

    Ali Tehranchi; Yousef Rezaei; Mohammadreza Mohammadi-Fallah; Mohammadreza Mokhtari; Mansour Alizadeh; Farzad Abedi; Masoud Khalilzadeh; Parisa Tehranchi

    2014-01-01

    Objective: The aim of this investigation was to assess the efficacy of hydrochlorothiazide as a hypocalciuric diuretic on stone-free rate of renal pelvic calculi after extracorporeal shock wave lithotripsy (ESWL). Materials and Methods: A double-blind, placebo-controlled randomized clinical trial was conducted and 52 patients with renal pelvic calculi (diameter ≤2 cm) were enrolled from February 2010 to September 2010. ESWL protocol was performed by 2,500 shocks per session. The patients ...

  17. FT-IR Analysis of Urinary Stones: A Helpful Tool for Clinician Comparison with the Chemical Spot Test

    OpenAIRE

    Aniello Primiano; Silvia Persichilli; Giovanni Gambaro; Pietro Manuel Ferraro; Alessandro D’Addessi; Andrea Cocci; Arcangelo Schiattarella; Cecilia Zuppi; Jacopo Gervasoni

    2014-01-01

    Background. Kidney stones are a common illness with multifactorial etiopathogenesis. The determination of crystalline and molecular composition and the quantification of all stone components are important to establish the etiology of stones disease but it is often laborious to obtain using the chemical method. The aim of this paper is to compare chemical spot test with FT-IR spectroscopy, for a possible introduction in our laboratory. Methods. We analyzed 48 calculi using Urinary Calculi Anal...

  18. Spatial Analysis of BioAmbients

    DEFF Research Database (Denmark)

    Nielson, Hanne Riis; Nielson, Flemming; Pilegaard, Henrik

    2004-01-01

    Programming language technology can contribute to the development and understanding of Systems Biology by providing formal calculi for specifying and analysing the dynamic behaviour of biological systems. Our focus is on BioAmbients, a variation of the ambient calculi developed for modelling mobi...... mobility in computer systems. We present a static analysis for capturing the spatial structure of biological systems and we illustrate it on a few examples....

  19. Silicate Urolithiasis during Long-Term Treatment with Zonisamide

    OpenAIRE

    Yukio Homma; Akira Ishikawa; Kanami Takaya; Teruaki Kobayashi; Yorito Nose; Toshikazu Sato; Satoru Taguchi

    2013-01-01

    Silicate urinary calculi are rare in humans, with an incidence of 0.2% of all urinary calculi. Most cases were related to excess ingestion of silicate, typically by taking magnesium trisilicate as an antacid for peptic ulcers over a long period of time; however, there also existed unrelated cases, whose mechanism of development remains unclear. On the other hand, zonisamide, a newer antiepileptic drug, is one of the important causing agents of iatrogenic urinary stones in patients with epilep...

  20. The Prevalence and Characteristic Differences in Prostatic Calcification between Health Promotion Center and Urology Department Outpatients

    OpenAIRE

    Hong, Chan Gyu; Yoon, Byung Il; Choe, Hyun-Sop; Ha, U-Syn; Sohn, Dong Wan; Cho, Yong-Hyun

    2012-01-01

    Purpose We evaluated the differences in calculi characteristics and their prevalence according to the presence of lower urinary tract symptoms between adult patients examined at the Urology Department and those examined at the Health Promotion Center (HPC). Materials and Methods The prevalence of prostatic calcification, characteristics of calculi (number, size, and location), and differences in lower urinary tract symptoms were compared and analyzed for 479 subjects who underwent transrectal...

  1. Urolithiasis in renal transplantation: Diagnosis and management

    OpenAIRE

    Elisa Cicerello; Franco Merlo; Mario Mangano; Giandavide Cova; Luigi Maccatrozzo

    2014-01-01

    Obiectives: To report our experience of diagnosis and multimodal management of urolithiasis in renal transplantation. Patients and Methods: From January 1995 to December 2012, 953 patients underwent renal transplantation in the Kidney Transplant Unit of Treviso General Hospital. Ten (10%) of them developed urinary calculi and were referred at our institution. Their mode of presentation, investigation and treatment were recorded. Results: Seven had renal and 3 ureteral calculi. Urolithiasis wa...

  2. CASE REPORT OF AN UNUSUALLY LARGE RENAL CALCULUS

    OpenAIRE

    Samir; Yogesh; Tushar Ranjan

    2015-01-01

    Renal calculus is a solid or crystal aggregation formed in the kidneys from minerals in the u rine . Many calculi are formed and passed without causing symptoms. A kidney stone is a hard, crystalline mineral material formed within the kidney or urinary tract. Renal calculi affect all geographical, racial and groups with a worldwide prevalence of bet ween 2 and 20%. Majority of the patients are usually between the 20 - 55 years of age. T...

  3. Role of the plain radiograph and urinalysis in acute ureteric colic.

    OpenAIRE

    Boyd, R.; A J Gray

    1996-01-01

    OBJECTIVE: (1) To determine the accuracy of accident and emergency (A&E) doctors' diagnosis of radio-opaque ureteric calculi on plain abdominal radiographs; (2) to study the predictive value of haematuria with a history suggestive of ureteric colic. DESIGN: A prospective study of all patients seen in a three month period with a provisional diagnosis of ureteric colic. Intravenous urography (IVU) was used as the gold standard for diagnosis of ureteric calculi. SETTING: The accident and emergen...

  4. The Axioms of Team Logic

    OpenAIRE

    Lück, Martin

    2016-01-01

    A framework is developed that extends calculi for propositional, modal and predicate logics to calculi for team-based logics. This method is applied to classical and quantified propositional logic, first-order logic and the modal logic K. Complete axiomatizations for propositional team logic PTL, quantified propositional team logic QPTL, modal team logic MTL and the dependence-atom-free fragment of first-order team logic TL are presented.

  5. Herbal medicines for urinary stone treatment. A systematic review

    OpenAIRE

    Elena Monti; Alberto Trinchieri; Vittorio Magri; Anne Cleves; Gianpaolo Perletti

    2016-01-01

    Objective: To analyze the clinical evidence on the efficacy of phytotherapy in the treatment of calculi in the urinary tract. Methods: To be eligible, full-length articles should include the results of randomized controlled trials enrolling patients affected by urolithiasis, reporting any comparison between an experimental herbal agent versus placebo or any active comparator, aimed at preventing the formation or facilitating the dissolution of calculi in any portion of the urinary tract. Fift...

  6. Holmium laser for multifunctional use in urology

    Science.gov (United States)

    Watson, Graham M.; Shroff, Sunil; Thomas, Robert; Kellett, Michael

    1994-05-01

    The holmium laser pulsed at 350 microsecond cuts tissue and fragments calculi. It has been assessed for minimally invasive urological intervention. It is useful for partly excising and partly coagulating tumors, incising strictures and the obstructed PUJ. It partly drill and partly fragments urinary calculi however hard. Other lasers are more effective at any one particular application, but this laser is a useful compromise as a multifunctional device.

  7. Struvite Urolithiasis in Long-Evans Rats.

    Science.gov (United States)

    Pang, Jassia; Borjeson, Tiffany M; Parry, Nicola M A; Fox, James G

    2015-12-01

    Struvite urinary calculi, which are composed of magnesium, ammonium, and phosphate, can cause complications including sepsis and renal failure. Struvite calculi were identified within the urinary bladder and renal pelvis of 2 Long-Evans rats that died within days after arrival from a commercial vendor. The remaining rats in the shipment were screened by physical examination, radiography, and ultrasonography, revealing an additional 2 animals that were clinically affected. These rats were euthanized, necropsied, and yielded similar findings to those from the first 2 rats. In addition, urine samples had an alkaline pH and contained numerous bacteria (predominantly Proteus mirabilis), leukocytes, and crystals. All calculi were composed completely of struvite. Another 7 rats in the shipment had alkaline urine with the presence of blood cells; 6 of these rats also had abundant struvite crystals, and P. mirabilis was cultured from the urine of 3 rats. Further investigation by the vendor identified 2 of 100 rats with struvite calculi from the same colony. Although no specific cause could be implicated, the fact that all the affected rats came from the same breeding area suggests a genetic or environmental triggering event; a contribution due to diet cannot be ruled out. Our findings suggest that the affected rats had metabolic disturbances coupled with bacterial infection that predisposed them to develop struvite calculi. During sudden increases of struvite urinary calculi cases in rats, urine cultures followed by appropriate surgical intervention and antibiotic therapy is warranted. Additional factors, including diet, merit attention as well. PMID:26678365

  8. 腹膜后腹腔镜肾盂输尿管切开取石术 (附八例报告)%Retroperitoneal laparoscopic pyelolithotomy and ureterolithotomy fo r the treatment of pyelic or ureteral calculi (report of 8 cases)

    Institute of Scientific and Technical Information of China (English)

    唐来坤; 陆立平; 蔡永葆; 郦俊生; 李立; 潘良; 沙键; 杨银才; 杨南京; 江鱼

    2001-01-01

    目的介绍经腹膜后腹腔镜肾盂或输尿管切开取石及切口不缝合的术式经验。方法肾盂及输尿管结石患者8例,病程3个月~2年,结石直径0.8~2.4 cm。X线或B超标志定位,经膀胱插入输尿管支架管至结石处,水囊扩张腹膜后间隙,形成腹膜后操作空间,暴露输尿管。于结石处用输尿管刀切开肾盂或输尿管,取出结石,将输尿管支架推入肾盂。结果 8例手术均成功,手术时间60~230 min,平均115 min。恢复顺利,随访3~6个月,无并发症发生。结论经腹膜后途径腹腔镜肾盂或输尿管取石及切口不缝合,简化了操作程序,安全、有效、可行。

  9. Intrasinusal pyelolithotomy plus postrenal low pole segmental incision for removal of calculus for the treatment of complex renal calculi%肾窦内肾盂加肾后下部切开取石治疗复杂性肾结石

    Institute of Scientific and Technical Information of China (English)

    张福先

    2005-01-01

    目的:探讨肾窦内肾盂加肾后下部切开取石治疗复杂性肾结石的疗效.方法:采用肾窦内肾盂加肾后下部切开取石治疗46例复杂性肾结石病人.结果:41例1次取尽结石,手术时间平均115分钟,手术中均未输血,术后无继发出血.结论:肾窦内肾盂加肾后下部切开取石是治疗复杂性肾结石的一种安全有效的方法.具有术中出血少、肾功能受损轻、术后并发症少等优点.

  10. 肾窦内肾盂切开取石术联合输尿管镜下气压弹道碎石机碎石治疗复杂性肾结石12例%Intrasinusal Pyelolithotomy Combined with Ureteroscopic Pneumatic Lithotripsy in Treatment of Complex Renal Calculi:A Report of 12 Cases

    Institute of Scientific and Technical Information of China (English)

    李家高; 吴富红; 董昌详; 柯昌兴; 左毅刚; 李双鹏; 李巧分; 李瑛

    2011-01-01

    目的 探讨输尿管镜下气压弹道碎石机碎石在肾窦内肾盂切开取石术治疗复杂性肾结石中的临床应用价值.方法 对12例复杂性肾结石患者采用肾窦内肾盂切开取石术,直视下或用取石钳取出肾盂和各盏结石,用输尿管镜配合气压弹道碎石机击碎残石.结果 12例患者行肾窦内肾盂切开取石术联合输尿管镜下气压弹道碎石机碎石均获得成功.手术时间为116~235 min,术中出血量为50~350 mL.术中无大出血和胸膜、肠道、肾蒂损伤及肾周感染、继发性高血压等并发症发生.10例结石一次性取尽,1例残留小结石于术后1.5个月自行排出,1例残留结石经体外冲击波碎石术治疗后排出.术后随访3~6个月,12例患者复查尿路平片+静脉尿路造影,均无结石残留,原肾积水明显消退,血肌酐正常.结论 肾窦内肾盂切开取石术联合输尿管镜下气压弹道碎石机碎石治疗复杂性肾结石,基本达到了取尽结石,同时把肾损伤降到最低.

  11. 超声引导微创经皮肾镜取石术与肾窦内肾盂切开取石术治疗肾结石疗效分析%Ultrasound guided minimally invasive percutaneous nephrolithotomy and kidney transinusal pyelolithotomy for treatment of renal calculi : A comparative clinical study

    Institute of Scientific and Technical Information of China (English)

    何大鹏; 谢习颂; 王忠; 唐宏; 辜福贤; 王咸钟; 唐仕明; 曹安贵

    2013-01-01

    目的:探讨超声引导微创经皮肾镜取石术与肾窦内肾盂切开取石术治疗肾结石疗效的对比及安全性.方法:选取76例有手术指征的肾结石患者,按照入院先后顺序及其患者对手术术式的选择意愿分为研究组及对照组,各38例,对照组采取肾窦内肾盂切开取石术治疗,研究组采取超声引导微创经皮肾镜取石术治疗,观察两组治疗疗效及安全性.结果:(1)两组患者术前Cr、βMG、eGFR、RBP比较差异无统计学意义(P>0.05),术后对照组分别为(102.38±18.34)μmol/L、(83.23±32.25) mL/min/1.73m2、(3.13±1.42) ng/L、(64.42±33.42) mg/L,研究组分别为(103.68±17.59)μmol/L、(84.17±30.65) mL/min/1.73m2、(3.15±1.38)ng/L、(62.82±32.15)mg/L,两组治疗前后组内比较差异无统计学意义(P>0.05),治疗后各指标在组间比较差异无统计学意义(P>0.05),结石清除率、残留率对照组分别为84.21%(32/38)、15.79%(6/38),研究组分别为89.47%(34/38)、10.53%(4/38),两组比较无显著性差异(P>0.05).(2)不良反应及并发症:无1例发生损失周围脏器情况,对照组术后2例患者出血量达到400mL以上,给予输血治疗,7例患者发生术后高热(对照组5例,研究组2例),后证实存在感染,经过合理抗感染治疗后恢复正常.结论:超声引导微创经皮肾镜取石术治疗肾结石较肾窦内肾盂切开取石术创伤小、术后恢复快、结石清除率高,使用安全,并发症少.

  12. Treatment of complicated renal calculi with PCN-L and lower renal calices with pyelolithotomy%经皮肾穿刺取石和肾盂肾下盏切开取石治疗复杂性肾结石

    Institute of Scientific and Technical Information of China (English)

    李解方; 丁平; 曹友汉; 刘志文

    2005-01-01

    目的提高治疗复杂性肾结石的效果.方法对626例复杂性肾结石患者,606例采用经皮肾穿刺取石(PCN-L),20例采用改良式肾盂肾下盏联合切开取石.结果606例PCN-L中一次取净结石86%,需再次取残石14%.改良式肾盂肾下盏联合切开取石20例,术中取净结石16例,占80%,残留结石4例,占20%.结论PCN-L对肾损伤小、恢复快,可经原通道反复取石.改良式肾盂肾下盏联合切开取石,主要处理位于肾中下盏复杂性肾结石.因此,只要技术条件成熟,PCN-L应作为首选处理肾结石的主要方法.

  13. Incision of renal posterior lip and pyelolithotomy in the treatment of renal complex calculi(Report of 16 cases)%肾盂肾后唇切开术治疗复杂性肾结石(附16例报告)

    Institute of Scientific and Technical Information of China (English)

    丁庆标; 王小黑; 范晓玲; 王炜

    2002-01-01

    目的:探讨复杂性肾结石手术取石方法.方法:对16例巨大鹿角状结石或并发上、中、下盏多发结石患者,采用肾盂、肾后唇切开取石术.结果:全部病例均顺利取出结石,术后肾功能恢复好,术中损伤后段血管1例,残留小结石2例,并发尿漏1例.结论:肾盂、肾后唇切开取石术具有显露充分、结石取净率高、损伤少等优点.

  14. Effect Comparison between Nephrolithotomy and Pyelolithotomy with Ballast Lithotripsy for Anatrophic Renal Staghorn Calculi%肾实质切开取石与肾盂切开气压弹道碎石术治疗无萎缩肾巨大肾结石疗效比较

    Institute of Scientific and Technical Information of China (English)

    李进; 杨罗艳; 吴洪涛; 姚干

    2008-01-01

    目的 比较肾盂切开气压弹道碎石与肾实质切开取石术治疗无肾萎缩巨大肾结石的效果.方法 160例无肾萎缩巨大肾结石患者,随机分为两组,采用肾盂切开气压弹道碎石术(A组,80例)与肾实质切开取石术(B组,80例)治疗.结果 A组平均手术时间、平均出血量均较B组明显减少,术后肾功能恢复较好.结论肾盂切开气压弹道碎石术治疗无肾萎缩巨大肾结石,手术时间短,出血少,肾功能损害小,效果满意.

  15. Feasibility and safety analysis of robot-assisted laparoscopic pyelolithotomy in the treatment of complicated renal calculi%机器人辅助腹腔镜手术治疗复杂肾结石的可行性与安全性分析

    Institute of Scientific and Technical Information of China (English)

    何威; 沈周俊; 徐兆平; 祝宇; 张荣明; 钟山; 王先进; 王晓晶

    2014-01-01

    目的 探讨机器人辅助腹腔镜下肾盂切开取石术(robot-assisted laparoscopic pyelolithotomy,RALPL)治疗复杂肾结石的安全性和可行性. 方法 2013年3-7月,我科对4例复杂肾结石患者以达芬奇机器人辅助腹腔镜手术完成肾盂切开取石术.其中男3例,女1例.年龄37~59岁.2例因肾盂输尿管连接处梗阻(ureteropelvic junction obstruction,UPJO)合并结石而选择RALPL,另2例因肾结石合并同侧肾上腺肿瘤(原发性醛固酮增多症)而选择RALPL.结石位于左肾3例,右肾1例,均位于下盏或肾盂.结石直径27~33 mm.所有手术均采取经腹途径.UPJO合并结石患者在结石取出后行机器人辅助腹腔镜下肾盂成形术.肾结石合并同侧肾上腺肿瘤患者先在机器人辅助腹腔镜下切除同侧肾上腺肿瘤,再行RALPL. 结果 4例手术均获成功.2例合并UPJO者手术时间为90、120 min,失血量50、70 ml,术后住院时间4、5d.2例合并肾上腺腺瘤者手术时间110、130 min,失血量80、120 ml,术后住院时间5、7d.随访5~9个月,复查CT尿路造影均未发现残余结石. 结论 UPJO合并肾结石的患者是RALPL的可推荐适应证.对于其他复杂的肾结石,RALPL是一种可选的手术方式.

  16. 肾盂切开钬激光碎石取石术治疗孤立肾巨大鹿角形结石的疗效观察%Combination with Pyelolithotomy and Holmium Laser Lithotripsy for the Removal of Complex Staghorn Renal Calculi in Solitary Kidney

    Institute of Scientific and Technical Information of China (English)

    张会江; 叶和松; 王守学; 周小庆; 李美凤

    2009-01-01

    目的:探讨和评价经肾盂切开钬激光碎石取石术治疗孤立肾巨大鹿角形结石的安全性和疗效.方法:回顾性分析接受经肾盂切开配合钬激光碎石取石术治疗的7例孤立肾巨大鹿角形结石患者的临床资料.结果:7例患者均手术顺利,术中出血量80~250 ml,平均150 ml、随访6~24个月,肾功能4例恢复正常,3例接近正常值范围,复查B超无结石残留.结论:该术式具有术中出血少、手术安全、对肾功能无明显影响、结石取净率高等优点,是一种处理孤立肾巨大鹿角形结石的较好方法.

  17. 纤维胆道镜和C臂X线机在手术治疗肾铸型结石合并肾盏多发结石中的应用价值%Application of the Choledochofiberscope and C-arm X-ray Device for the Surgical Management of Renal Cast-Calculus Complicated Calyceal Multiple Calculi

    Institute of Scientific and Technical Information of China (English)

    高强利; 张超雄; 陈昌贵

    2005-01-01

    目的:提高手术治疗肾铸型结石合并肾盏多发结石的疗效.方法:全组32例均先采用肾盂切开或肾窦内肾盂切开取石,再用纤维胆道镜在术中经肾盂切口观察和协助取出结石,最后用C臂X线机确定是否有残留结石.结果:30例取尽结石,2例肾盏内共残留3枚直径小于0.5 cm×0.5 cm的结石.结论:在术中联合应用纤维胆道镜和C臂X线机能协助取尽结石,减少肾盂粘膜的损伤和失血量,提高手术疗效并实现一机多用,经济、安全、方便.

  18. 输尿管软镜碎石术与经皮肾镜碎石术治疗鹿角形肾结石疗效比较%Comparison of the efficacy of flexible ureteroscopy and percutaneous nephrolithotomy in treatment of renal staghorn calculi

    Institute of Scientific and Technical Information of China (English)

    李龚龙; 乔庆东; 王华礼; 王磊; 孙旭东; 郑艳丽

    2016-01-01

    目的 比较输尿管软镜碎石术(FURS)与经皮肾镜碎石术(PNL)治疗鹿角形肾结石的临床疗效.方法 选择2014年6月至2016年1月新乡市中心医院收治的42例鹿角形肾结石患者,根据患者意愿分为FURS组(n=22)和PNL组(n=20),对2组患者手术并发症发生率、手术时间、结石清除率、术后住院时间等进行比较.结果 FURS组和PNL组患者手术并发症总发生率分别为18.2% (4/22)和10.0%(2/20),手术时间分别为(127.7 ±55.9)和(97.9±50.8) min,结石清除率分别为68.2% (15/22)和95.0% (19/20),术后住院时间分别为(5.5±1.1)和(7.0±1.3)d,2组患者手术时间、结石清除率及术后住院时间比较差异均有统计学意义(P<0.05).结论 FURS和PNL均是鹿角形肾结石有效的治疗方法,PNL有更高的结石清除率、更短的手术时间,而FURS创伤更小、恢复更快、住院时间更短.

  19. 输尿管软镜与经皮肾镜治疗输尿管上段结石的疗效与优势对比%Comparative study on curative effects between flexible ureteroscopy and percutaneous nephrolithotomy in the management of proximal ureteral calculi

    Institute of Scientific and Technical Information of China (English)

    伦晓璐; 赵亚伟; 张刚; 孔祥波

    2015-01-01

    目的:探讨输尿管软镜取石术(flexible ureteroscopy,FURS)与经皮肾镜取石术(percutaneous nephrolithotomy,PNL)治疗输尿管上段结石的疗效与优势.方法:2013年5月~2014年10月我院收治单侧单发输尿管上段结石(长径10~20 mm)患者78例,其中30例行输尿管软镜取石术,48例行经皮肾镜取石术.从48例中随机抽取30例作为PNL组,对两组患者年龄、性别、肾盂积水程度、结行大小、手术时间、手术并发症发生率(依据elavien系统分级[1])、结石清除率、术后住院时间、手术费用等进行统计学分析.结果:两组患者年龄、性别、肾盂积水程度差异无统计学意义.两组结石大小为(14.6±2.6)和(14.1±2.4)mm(P=0.408),手术时间为(75.1±10.2)和(41.5±6.4)min(P<0.001),手术总并发症发生率为13.33%和26.67%(P=0.197),一期术后无石率(残留结石≤3 mm)为76.67%和93.33% (P=0.071),术后3个月无石率为90%和100%(P=0.236),术后住院时间为(2.7±0.7)和(5.1±0.7)d(P<0.001),住院费用为(37 089.1±1 325.5)和(26 549.5±854.9)元(P<0.001).结论:FURS与PNL均为治疗输尿管上段结石有效且安全的手术方法,FURS更具微创性,患者术后恢复快,住院时间更短,而PNL手术时间短,住院费用更低.

  20. 小功率钬激光经皮肾输尿管镜碎石术联合冲击波碎石治疗复杂性肾结石%Low-power holmium laser with mini-percutaneous nephrolithotomy and extracorporeal shock wave lithotripsy for complex renal cal-culi

    Institute of Scientific and Technical Information of China (English)

    惠继红; 吕建林; 唐庆来; 周兴祝; 柳发德; 王义兆

    2009-01-01

    目的 探讨小功率钬激光经皮.肾输尿管镜碎石术联合体外冲击波碎石治疗复杂性.肾结石的有效性和安全性.方法 应用小功率(20 W:0.6~0.8 J×10~20 Hz)钬激光经皮.肾穿刺微造瘘输尿管镜配合体外冲击波治疗复杂性肾结石31例,分析小功率钬激光碎石术联合体外冲击波碎石的碎石时间、结石排净率、并发症等.结果 平均碎石时间为85 min(60~120 min),总的取净率为87.09%(27/31);术中出血量估计平均为80 ml;术后3例患者出现高热,无其他严重并发症.结论 小功率钬激光经皮.肾输尿管镜碎石术联合体外冲击波碎石治疗复杂性.肾结石是一种安全、有效的方法.

  1. Contributions to the qualification of the ''CRISTAL'' criticality calculi scheme: interpretation of critical experiments. Elaboration of a characterization system of neutronic configurations; Contributions a la qualification du schema de calcul de criticite ''cristal'': interpretation d'experiences critiques. Elaboration d'un systeme de caracterisation des configurations neutroniques

    Energy Technology Data Exchange (ETDEWEB)

    Gagnier, E

    1999-06-01

    This thesis work is about the validation of the new criticality-safety package CRISTAL and contributes to the modernization and the improvement of the computational tools. The first part presents neutronic elements, the objectives of safety criticality studies and the package CRISTAL. Then, the validation work concerned two series of experiments involving uranyl solutions (UO{sub 2}F{sub 2}) and UO{sub 2} powders. For these experiments, the differences between the computation results and the experimental results were analysed. It was highlighted interesting physical phenomena such of the compensations of errors between the approximate representation by the 99 energy group structure on the first resonance of oxygen and the anisotropy of the diffusion simulation as well as the influence of uranium 234 in high enriched solutions in uranium 235. Once the work of the experimental qualification carried out, raises the question of the use the base of qualification and the ''calculation-experiment'' variations which are referred to it. It is often difficult to establish the link between the ''studied configuration'' and the experiments of the base of qualification. The presented characterisation system proposes to answer in a way automatic and quantified this difficulty: - in bringing an answer on the package qualification for the studied configuration, - in giving an estimate of the package bias. To answer these points, it was defined a set of 35 characteristic neutronic parameters representing the behaviour of the medium. To process the information brought by these parameters and to use it to answer the objectives of the system, we called upon statistical methods (Principal Components Analysis and Sliced Inverse Regression). The results obtained in the feasibility studies showed the relevance of these methods for the considered objectives. (author)

  2. 神农化石丹治疗泌尿系结石的临床观察

    Institute of Scientific and Technical Information of China (English)

    陶修翠; 叶婷婷

    2005-01-01

    Objective Observing the curative effect and safety of shennong Calculi - stopping Bolus for treating the calculi in the urinary system.Method Choosing 160 patients of the calculi in the urinaruy system,who are divided randomly in two groups,in which,the curative group thkes orally the Shennong Calculi - removal granule. The period of treatment is three months. Symptom sign, ealculi removal and clinic comprehensive curative effect after observing and treating. Results Total effective rate of curative group and control group is separately up to 93.59% and 80% ,the comparing diffetenee of two groups is obvious,the curative effect ot curative group is obviously higher than control group(P < 0.05). The curative effect of creative group is better than control group on symptom sign and calculi removal for improving the dull pain of lumbar region, anuria, macroscopic hematuria, real region pain by tapping and so on. The serious untoward reaction dpes not occur. Conclusion The curative effect of Shennong Calculistopping Bolus is obvious and its safety is excellent.

  3. Spatial reasoning with augmented points: Extending cardinal directions with local distances

    Directory of Open Access Journals (Sweden)

    Reinhard Moratz

    2012-12-01

    Full Text Available We present an approach for supplying existing qualitative direction calculi with a distance component to support fully fledged positional reasoning. The general underlying idea of augmenting points with local reference properties has already been applied in the OPRAm calculus. In this existing calculus, point objects are attached with a local reference direction to obtain oriented points and able to express relative direction using binary relations. We show how this approach can be extended to attach a granular distance concept to direction calculi such as the cardinal direction calculus or adjustable granularity calculi such as OPRAm or the Star calculus. We focus on the cardinal direction calculus and extend it to a multi-granular positional calculus called EPRAm. We provide a formal specification of EPRAm including a composition table for EPRA2 automatically determined using real algebraic geometry. We also report on an experimental performance analysis of EPRA2 in the context of a topological map-learning task proposed for benchmarking qualitative calculi. Our results confirm that our approach of adding a relative distance component to existing calculi improves the performance in realistic tasks when using algebraic closure for consistency checking.

  4. Robotic extended pyelolithotomy for complete staghorn calculus.

    Science.gov (United States)

    Sotelo, Rene; Astigueta, Juan Carlos; Giedelman, Camilo; de Andrade, Robert; Carmona, Oswaldo; Ramirez, Daniel; Clavijo, Rafael

    2010-08-01

    Staghorn stones represent a therapeutic challenge to urologists. We present our experience with laparoscopic extended pyelolithotomy for treatment of staghorn and complex renal calculi in highly selected cases. This approach provides the principles of open surgery with the advantages of minimally invasive surgery. We describe our experience with robot-assisted extended pyelolithotomy for complex coralliform calculi. Since January 2007, robotic extended pyelolithotomy has been performed by transperitoneal approach in two patients with complete coralliform lithiasis (calculi average size 8 cm). One patient had history of percutaneous nephrolithotomy. Demographic and operative data were collected. All procedures were technically successful without need for open conversion. Mean estimated blood loss was 175 ml (range 50-300 ml), and mean operative time was 150 min (range 120-150 min). A perinephric drain was employed in one patient with duration of 5 days. Postoperative imaging confirmed complete stone clearance. Robotic extended pyelolithotomy is a feasible and reproducible procedure for removal of complete and partial staghorn calculi in selected patients with complex nephrolithiasis. This approach might limit the role of open surgery for these calculi, but further publications with more cases are necessary to further define its utility. PMID:27628774

  5. The Role of Ultrasound in Initial Evaluation of Renal Colic

    Directory of Open Access Journals (Sweden)

    Abu-Ghazzeh Yaser

    2000-01-01

    Full Text Available The objective of this study is to evaluate the use of ultrasound in the initial evaluation of renal colic. We studied prospectively 21 patients referred for radiographic evaluation for renal colic from January 1998 through April 1998. All sonographic studies were performed with real-time sector scanner (Kertz, Compeson 410 using 3.5 MHz Probe. Our sonographic criteria for a positive examination consisted of the visualization of urinary tract calculus and/or unilateral hydronephrosis with or without ureterectasis. The presence of urinary calculi was proven in 18 out of 21 patients (85%. The absence of calculi was established in three cases either by negative I.V.U. (2 cases or by the clinical and sonographic demonstration of epididymitis as the cause in one patient. In the 18 patients with proven urinary calculi, ultrasound correctly identified the diagnosis in 15 cases (83%. Of those 15 visualized calculi, 11 were located at the ureterovesicular junction, two in the renal pelvis, one in the proximal third of the ureter, and one in the distal third. The sensitivity of ultasonography to detect renal calculi was 83% and the specificity, 100%. The one false positive examination with unilateral hydronephrosis proved to be due to a retroperitoneal liposarcoma. There were two cases in which the urinary tract ultrasound examination was negative. We conclude that ultrasound has a high diagnostic value when used as the first line investigation for the initial evaluation of renal colic.

  6. Low dose computed tomography in suspected acute renal colic

    Energy Technology Data Exchange (ETDEWEB)

    Meagher, Tom; Sukumar, V.P.; Collingwood, Jackie; Crawley, Therese; Schofield, David; Henson, John; Lakin, Ken; Connolly, Dan; Giles, John

    2001-11-01

    Aim: To evaluate whether computed tomography (CT) of the renal tract in suspected renal colic using reduced exposure factors maintains diagnostic accuracy. METHODS: Prospective multi-centre cohort study. Patients with suspected renal colic were examined using computed tomography (CT) of the renal tract followed by intravenous urography (IVU) in four different centres with five different CT systems. RESULTS: Sixty-nine patients with suspected renal colic had CT of the renal tract followed by IVU. CT was performed with reduced exposure factors, giving a mean CT effective dose of 3.5 (range 2.8-4.5) mSv compared with 1.5 mSv for IVU. Ureteric calculi were detected in 43 patients: CT and IVU detected 40 (93%) ureteric calculi. CT identified other lesions causing symptoms in five patients and identified renal calculi in 24 patients. IVU identified renal calculi in six patients and made false positive diagnosis of renal calculi in seven patients. Mean examination time for CT was 5 minutes and for IVU was 80 minutes. CONCLUSION: CT examination at reduced exposure factors maintains the diagnostic accuracy recorded in other series. Meagher, T. et al. (2001)

  7. Unenhanced helical computed tomography in the evaluation of acute flank pain

    International Nuclear Information System (INIS)

    The purpose of this study was to determine the value of unenhanced helical computed tomography (UHCT) in the diagnosis of acute flank pain at our institution. Two hundred and thirty-three consecutive UHCT examinations, performed for suspected renal/ureteral colic between July 2000 and August 2001 were reviewed, along with pertinent medical records. Ureteral calculi were identified in 148 (64%) examinations, evidence of recent passage of calculi was found in 10 (4%) and no calculi were found in 75 (32%). Thirty-two of the conservatively managed patients were excluded for inadequate follow-up. In the remaining 201 patients, sensitivity of UHCT in diagnosing calculi was 99% and specificity was 98%, while the positive predictive value was 99% and negative positive predictive value was 98%. Overall, an alternative or additional diagnosis was established in 28 (12%) patients. Upon diagnosis of ureterolithiasis on UHCT, none of the patients required additional imaging studies for confirmation. UHCT is a highly sensitive imaging modality for the detection of urinary tract calculi and obstruction. (author)

  8. Sonographically determined clues to the symptomatic or silent cholelithiasis

    International Nuclear Information System (INIS)

    To determine an association between sonographically determined contractility with the symptomatic or silent nature of gallstone. Adult gallstone patients without (group I) and with biliary symptoms (group II) were compared with age and gender-matched controls. Demographic data, body mass index, risk factors, size, number and mobility of gallstone, gallbladder wall thickness (GBWT), volume and Ejection Fraction (EF) were determined on ultrasound before and after a standardized fatty meal (BFM and AFM). Demographic data, risk factors and gallstone characteristics were analyzed by Pearson Chi-square test and the gallbladder characteristics were analyzed by One-way ANOVA and Post Hoc tests by multiple comparisons on SPSS 11 with significance p=0.05. The gallbladder contractility as measured by changes in wall thickness and volume changes BFM and AFM, and ejection fraction was similar in controls and asymptomatic cholelithiasis groups and significantly reduced in symptomatic patients (p<.001). Multiparity (p=0.002), female gender (p=0.018), age less than 50 years (0.05), impacted calculi (p=0.001), multiple calculi (<.001) and calculi 5 mm (p<0.001) were associated with pain. A sluggishly emptying gallbladder was more significantly associated with symptomatic cholelithiasis compared to controls and asymptomatic cholelithiasis state in this series. Consideration of age, gender, impaction of calculi, number and size of calculi is important in causing symptom state and management options. (author)

  9. MRI of oriental cholangiohepatitis

    Energy Technology Data Exchange (ETDEWEB)

    Wani, N.A., E-mail: ahmad77chinar@gmail.co [Department of Radiodiagnosis and Imaging, Sher-I-Kashmir Institute of Medical Sciences (SKIMS), Srinagar (India); Robbani, I.; Kosar, T. [Department of Radiodiagnosis and Imaging, Sher-I-Kashmir Institute of Medical Sciences (SKIMS), Srinagar (India)

    2011-02-15

    Oriental cholangiohepatitis (OCH) also called recurrent pyogenic cholangitis is characterized by intrahepatic duct calculi, strictures, and recurrent infections. In turn cholangitis can result in multiple hepatic abscesses, further biliary strictures, and in severe cases, progressive hepatic parenchymal destruction, cirrhosis, and portal hypertension. Magnetic resonance cholangiopancreatography (MRCP) and conventional T1-weighted (T1 W) and T2-weighted (T2 W) magnetic resonance imaging (MRI) findings have been described in patients with OCH. MRCP findings include duct dilation, strictures, and calculi. MRCP can help to localize the diseased ducts and determine the severity of involvement. T1 and T2 W sequences reveal the parenchymal changes of atrophy, abscess formation, and portal hypertension in addition to calculi. Post-treatment changes are also well depicted using MRI. Comprehensive, non-invasive assessment is achieved by using conventional MRI and MRCP in OCH providing a roadmap for endoscopic or surgical management.

  10. Implementation of inherence calculus in the PowerLoom environment

    Science.gov (United States)

    Wachulski, Marcin F.; Mulawka, Jan J.; Nieznański, Edward

    The article describes an attempt to implement abstract and concrete inherence calculi in the PowerLoom technology. Issues in the field of artificial intelligence, ontology and philosophy have been addressed. The inherence calculus is a type of a formal logic system. The PowerLoom technology consists of a knowledge representation language and an inference engine. Six inherence calculi have been implemented and an appropriate testing environment has been developed. The inherence calculus has been also extended by categorical properties and a theoretical discussion of ontological Boolean algebra has been conducted. Carried out experiments showed properties of the inherence calculi and also verified capabilities of PowerLoom to construct such logic systems. It occurred that expert system operational mode of PowerLoom outperforms its abilities to work as a mathematical theorem prover.

  11. Functions as proofs as processes

    CERN Document Server

    Beffara, Emmanuel

    2011-01-01

    This paper presents a logical approach to the translation of functional calculi into concurrent process calculi. The starting point is a type system for the {\\pi}-calculus closely related to linear logic. Decompositions of intuitionistic and classical logics into this system provide type-preserving translations of the \\lambda- and \\lambda\\mu-calculus, both for call-by-name and call-by-value evaluation strategies. Previously known encodings of the \\lam-calculus are shown to correspond to particular cases of this logical embedding. The realisability interpretation of types in the \\pi-calculus provides systematic soundness arguments for these translations and allows for the definition of type-safe extensions of functional calculi.

  12. Percutaneous Nephrolithotomy in Children

    Directory of Open Access Journals (Sweden)

    Romano T. DeMarco

    2011-01-01

    Full Text Available The surgical management of pediatric stone disease has evolved significantly over the last three decades. Prior to the introduction of shockwave lithotripsy (SWL in the 1980s, open lithotomy was the lone therapy for children with upper tract calculi. Since then, SWL has been the procedure of choice in most pediatric centers for children with large renal calculi. While other therapies such as percutaneous nephrolithotomy (PNL were also being advanced around the same time, PNL was generally seen as a suitable therapy in adults because of the concerns for damage in the developing kidney. However, recent advances in endoscopic instrumentation and renal access techniques have led to an increase in its use in the pediatric population, particularly in those children with large upper tract stones. This paper is a review of the literature focusing on the indications, techniques, results, and complications of PNL in children with renal calculi.

  13. Many-valued logics

    CERN Document Server

    Bolc, Leonard

    1992-01-01

    Many-valued logics were developed as an attempt to handle philosophical doubts about the "law of excluded middle" in classical logic. The first many-valued formal systems were developed by J. Lukasiewicz in Poland and E.Post in the U.S.A. in the 1920s, and since then the field has expanded dramatically as the applicability of the systems to other philosophical and semantic problems was recognized. Intuitionisticlogic, for example, arose from deep problems in the foundations of mathematics. Fuzzy logics, approximation logics, and probability logics all address questions that classical logic alone cannot answer. All these interpretations of many-valued calculi motivate specific formal systems thatallow detailed mathematical treatment. In this volume, the authors are concerned with finite-valued logics, and especially with three-valued logical calculi. Matrix constructions, axiomatizations of propositional and predicate calculi, syntax, semantic structures, and methodology are discussed. Separate chapters deal w...

  14. A functional presentation of Pi calculus

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    From the very beginning process algebra introduced the dichotomy between channels and processes. This dichotomy prevails in all present process calculi.The situation is in contrast to that with lambda calculus which has only one class of entities——the lambda terms. We introduce in this paper a process calculus called Lamp in which channels are process names. The language is more uniform than existing process calculi in two aspects: First it has a unified treatment of channels and processes. There is only one class of syntactical entities——processes. Second it has a unified presentation of both first order and higher order process calculi. The language is functional in the sense that lambda calculus is functional.Two bisimulation equivalences, barbed and closed bisimilarities, are proved to coincide.A natural translation from Pi calculus to Lamp is shown to preserve both operational and algebraic semantics. The relationship between lazy lambda calculus and Lamp is discussed.

  15. Renal acidification defects in medullary sponge kidney

    DEFF Research Database (Denmark)

    Osther, P J; Hansen, A B; Røhl, H F

    1988-01-01

    Thirteen patients with medullary sponge kidney underwent a short ammonium chloride loading test to investigate their renal acidification capacity. All but 1 presented with a history of recurrent renal calculi and showed bilateral widespread renal medullary calcification on X-ray examination. Nine...... patients had some form of renal acidification defect; 8 had the distal type of renal tubular acidosis, 2 the complete and 6 the incomplete form. One patient had proximal renal tubular acidosis. These findings, which suggest that renal acidification defects play an important role in the pathogenesis...... of renal calculi in medullary sponge kidney, have considerable therapeutic implications....

  16. End-to-end integrated security and performance analysis on the DEGAS Choreographer platform

    DEFF Research Database (Denmark)

    Buchholtz, Mikael; Gilmore, Stephen; Haenel, Valentin;

    2005-01-01

    We present a software tool platform which facilitates security and performance analysis of systems which starts and ends with UML model descriptions. A UML project is presented to the platform for analysis, formal content is extracted in the form of process calculi descriptions, analysed...... with the analysers of the calculi, and the results of the analysis are reflected back into a modified version of the input UML model. The design platform supporting the methodology, Choreographer, interoperates with state-of-the-art UML modelling tools. We illustrate the approach with a well known protocol...

  17. Using location types to control interferences in mobile resources

    Institute of Scientific and Technical Information of China (English)

    FU Cheng; YOU Jin-yuan

    2005-01-01

    This paper presents a type system, called Location System (L-S), to control the interferences in the ambient-like calculi. The L-S allows well-behaved (non-interfering) processes to run in parallel if they do not access shared location during their execution life cycle. This approach is designed for a variant of Mobile Ambient (MA), called Safe Mobile Resources (SR), but it can be also used in other ambient-like calculi which are also discussed in this paper.

  18. Case report: laparoscopic pyeloplasty with pyelolithotomy in crossed fused ectopia.

    Science.gov (United States)

    Modi, Pranjal; Goel, Rajiv; Dodia, Sharad

    2006-03-01

    An 8-year-old boy with right flank pain was found on ultrasonography and intravenous urography to have hydronephrosis secondary to ureteropelvic junction obstruction with calculi in the lower pole of the right kidney and a fusion anomaly. Transperitoneal laparoscopic dismembered pyeloplasty and removal of calculi was carried out. The patient had uneventful recovery and is doing well at 6 months' follow-up. To our knowledge, this is the first reported case of laparoscopic pyeloplasty with pyelolithotomy in crossed fused ectopic kidneys in the pediatric population. PMID:16548727

  19. Recurrent Pure Calcite Urolithiasis Confirmed by Endoscopic Removal and Infrared Spectroscopy in a Malnourished Anorectic Female

    Science.gov (United States)

    Andreassen, Kim Hovgaard; Sloth Osther, Palle Jörn

    2016-01-01

    Abstract Often when calcite is found as a component of urinary calculi, they are considered false calculi or artifacts. We present a case of true calcite urolithiasis. The stone material was removed percutaneously from a severely malnourished anorectic woman and analyzed by infrared spectroscopy (IRS). In addition, calcite urolithiasis was confirmed in several recurrent stone events by IRS. Laxative abuse with magnesium oxide was believed to be the underlying cause of stone formation, and ammonium chloride given as one weekly dose turned out to be effective for stone prevention. PMID:27579419

  20. Application of Ureteroscope in Emergency Treatment with Persistent Renal Colic Patients during Pregnancy.

    Directory of Open Access Journals (Sweden)

    Shilin Zhang

    Full Text Available Although the application of ureteroscopy in the treatment of ureteral calculi during pregnancy has been on the rise, for persistent renal colic patients without ultrasound-detected ureteral calculi, it may represent a clinical dilemma due to the potential risks for both mother and fetus.The aim of the present study is to present our experience with the application of the ureteroscope in the emergency treatment of persistent renal colic patients during pregnancy.From March 2009 to September 2014, a total of 117 pregnant women who received ureteroscopy for persistent renal colic were retrospectively analyzed. Patients were divided into three groups according to duration of the persistent renal colic: Group A (within 12 hours; 24 cases; Group B (12 to 24 hours; 76 cases; and Group C (more than 24 hours; 17 cases. The stone-free rate, complications, and other qualitative data were analyzed.Of the 117 patients, 31 patients who were found not to have renal or ureteral calculi received ureteroscopic double-J (DJ stent insertion, whereas 86 patients who were found with ureteral calculi received ureteroscopic lithotripsy (URSL and DJ stent insertion. Among them, 24 patients (27.9% were found with ureteral calculi by ureteroscopy rather than ultrasound. In addition, 73 patients (84.9% had complete fragmentation of calculi; 12 patients (10.3% had a threatened abortion (the rates of threatened abortion in Groups A, B and C were 8.3% vs. 6.5% vs. 29.4%; Group C compared with Groups A and B, p<0.05, and one patient (1.2% had urosepsis (in Group C. However, these complications were cured with conservative treatment, without postpartum infant and maternal complications.For pregnant patients with persistent renal colic/ureteral calculi and hydronephrosis, ureteroscopic DJ stent insertion and URSL are effective and safe options when conservative treatment fails, even if no urinary calculi were found by ultrasound. At the same time, for patients with persistent

  1. Giant ureteral stone: a case report

    Directory of Open Access Journals (Sweden)

    Davut Akın

    2009-03-01

    Full Text Available Calculi of urinary system may be detected in ureter, bladder, and urethra. Calculi of ureter are commonly solitary and smaller than 2 cm in length. Giant ureteral stone is rare. We present our case of giant ureteral stone with imaging findings. An approximately 10 cm long stone was detected on direct urinary system graphy and intravenous urography of 28 year-old male admitted with left colic pain. The stone was extracted by open ureterolithotomy. The stone was 10 cm in length. Imaging methods are important to localize the stone, evaluate renal function, stage of hydronephrosis, differentiate acute from chronic, and diagnose predisposing factors in cases with giant ureteral stones.

  2. Multiple ureterolithiasis resembling steinstrasse: An unusual presentation

    Directory of Open Access Journals (Sweden)

    Praveen Kumar Pandey

    2014-12-01

    Full Text Available Steinstrasse or “stone street” is an expected complication after extracorporeal shock wave lithotripsy in patients with high stone burden. However, there are published reports of multiple ureterolithiasis resembling steinstrasse in patients with distal renal tubular acidosis. Here we report an uncommon case of a 60-year-old woman who presented with right renal calculi. Her right ureter was studded with multiple calculi up to the vesicoureteric junction. The affected right kidney was nonfunctional and was managed by nephroureterectomy.

  3. Note on a simple type system for non-interference

    CERN Document Server

    van Bakel, Steffen

    2011-01-01

    We consider CCS with value passing and elaborate a notion of noninterference for the process calculi, which matches closely that of the programming language. The idea is to view channels as information carriers rather than as "events", so that emitting a secret on output channel can be considered safe, while inputting a secret may lead to some kind of leakage. This is in contrast with the standard notion of noninterference for the process calculi where any causal dependency of low-level action from any high-level action is forbidden.

  4. Semantics of a Typed Algebraic Lambda-Calculus

    Directory of Open Access Journals (Sweden)

    Benoît Valiron

    2010-06-01

    Full Text Available Algebraic lambda-calculi have been studied in various ways, but their semantics remain mostly untouched. In this paper we propose a semantic analysis of a general simply-typed lambda-calculus endowed with a structure of vector space. We sketch the relation with two established vectorial lambda-calculi. Then we study the problems arising from the addition of a fixed point combinator and how to modify the equational theory to solve them. We sketch an algebraic vectorial PCF and its possible denotational interpretations.

  5. Semantics of a Typed Algebraic Lambda-Calculus

    OpenAIRE

    Benoît Valiron

    2010-01-01

    Algebraic lambda-calculi have been studied in various ways, but their semantics remain mostly untouched. In this paper we propose a semantic analysis of a general simply-typed lambda-calculus endowed with a structure of vector space. We sketch the relation with two established vectorial lambda-calculi. Then we study the problems arising from the addition of a fixed point combinator and how to modify the equational theory to solve them. We sketch an algebraic vectorial PCF and its possible den...

  6. Infinitary Term Graph Rewriting is Simple, Sound and Complete

    DEFF Research Database (Denmark)

    Bahr, Patrick

    2012-01-01

    Based on a simple metric and a simple partial order on term graphs, we develop two infinitary calculi of term graph rewriting. We show that, similarly to infinitary term rewriting, the partial order formalisation yields a conservative extension of the metric formalisation of the calculus. By show......Based on a simple metric and a simple partial order on term graphs, we develop two infinitary calculi of term graph rewriting. We show that, similarly to infinitary term rewriting, the partial order formalisation yields a conservative extension of the metric formalisation of the calculus...

  7. A call-by-value lambda-calculus with lists and control

    Directory of Open Access Journals (Sweden)

    Robbert Krebbers

    2012-10-01

    Full Text Available Calculi with control operators have been studied to reason about control in programming languages and to interpret the computational content of classical proofs. To make these calculi into a real programming language, one should also include data types. As a step into that direction, this paper defines a simply typed call-by-value lambda calculus with the control operators catch and throw, a data type of lists, and an operator for primitive recursion (a la Goedel's T. We prove that our system satisfies subject reduction, progress, confluence for untyped terms, and strong normalization for well-typed terms.

  8. The GHZ/W-calculus contains rational arithmetic

    Directory of Open Access Journals (Sweden)

    Bob Coecke

    2011-03-01

    Full Text Available Graphical calculi for representing interacting quantum systems serve a number of purposes: compositionally, intuitive graphical reasoning, and a logical underpinning for automation. The power of these calculi stems from the fact that they embody generalized symmetries of the structure of quantum operations, which, for example, stretch well beyond the Choi-Jamiolkowski isomorphism. One such calculus takes the GHZ and W states as its basic generators. Here we show that this language allows one to encode standard rational calculus, with the GHZ state as multiplication, the W state as addition, the Pauli X gate as multiplicative inversion, and the Pauli Z gate as additive inversion.

  9. Path integrals with generalized Grassmann variables

    Energy Technology Data Exchange (ETDEWEB)

    Chaichian, M. [Helsinki Univ. (Finland). Dept. of Physics; Demichev, A.P.

    1995-04-01

    The path integral representations the evolution of q-oscillators with root of unity values of q-parameter is constructed using Bargmann-Fock representations with commuting and non-commuting variables, the differential calculi being q-deformed in both cases. For q{sup 2} = -1 a new form of Grassmann-like path integral is obtained. (author). 14 refs.

  10. Effects of dietary calcium, phosphorus and magnesium on intranephronic calculosis in rats.

    Science.gov (United States)

    Woodward, J C; Jee, W S

    1984-12-01

    The effects of varying dietary levels of calcium, phosphorus and magnesium on the incidence and severity of intranephronic calculosis were studied. Renal calculi were induced by feeding female rats the AIN-76TM semipurified diet for 4 weeks. During this time period, dietary levels of 350, 450 or 550 mg calcium per 100 g diet did not influence the occurrence of urolithiasis. Increasing dietary magnesium levels from 50 to 350 mg was beneficial in preventing the occurrence of calculi if the diet contained 400 mg or less phosphorus. The protective effects of dietary magnesium were counteracted when dietary phosphorus levels were increased from 400 mg to 550 or 700 mg. If the dietary content of phosphorus and magnesium permitted the formation of renal calculi, the severity of the condition was also influenced by the dietary level of calcium. Some animal groups fed semipurified diets did not have microscopic or radiographic evidence of renal calculi but were found to have significantly elevated renal calcium values. It was suggested that these animals might be in a precalculus-forming state. PMID:6502276

  11. Autonomic nervous system function in patients with functional abdominal pain. An experimental study

    DEFF Research Database (Denmark)

    Jørgensen, L S; Christiansen, P; Raundahl, U;

    1993-01-01

    disturbed in 22 patients with functional abdominal pain (functional group) as compared with 14 healthy controls (healthy group) and 26 patients with organic abdominal pain (organic group) due to duodenal ulcer (DU), gallstones, or urinary tract calculi. Plasma adrenocorticotrophic hormone (ACTH) and serum...

  12. CONTROL CLINICAL EVALUATION OF KULATTHADI YOGA AS ASHMARIBHEDAN IN MUTRASHMARI

    Directory of Open Access Journals (Sweden)

    Jangle Vidya Muralidhar

    2012-10-01

    Full Text Available Urolithiasis, a presence of calculi single or multiple in renal or urinary tracks is a clinical entity which has been universally accepted as problematic condition regarding its treatment in all systems of medical science. There is no known drug therapy at present which dissolves or fragments the calculi by changing lithogenic potential of particular person. Urinary calculi disease has been described in detail under the heading of Ashmari in Ayurvedic texts. Ashmari is one of the few surgical conditions which have been given very prominent place in Ayurveda by Acharya Sushruta and Various herbs like Kulattha (Dolicos Biflorus, Gokshura (Tribulus Terrestris, Apamarga (Achyranthes Aspera, Pashanbheda (Berginia Lingulata and Varuna (Crataeva Nurvela etc. and herbomineral compounds are described which are effective against urolithiasis by dissolving calculi thus facilitating their expulsion. This study was aimed to evaluate Ashmaribhedana property of “Kulatthadi yoga” in Mutrashmari to make an effective, long lasting, cost effective, authentic alternative & easily available conservative management of Mutrashmari. After observation, it was found that Kulatthadi Yoga is effective in Kapha-Vataja Mutrashmari & control group shows significant result in Mutrashmari.

  13. Static analysis of a Model of the LDL degradation pathway

    DEFF Research Database (Denmark)

    Pilegaard, Henrik; Nielson, Flemming; Nielson, Hanne Riis

    2005-01-01

    BioAmbients is a derivative of mobile ambients that has shown promise of describing interesting features of the behaviour of biological systems. As for other ambient calculi static program analysis can be used to compute safe approximations of the behavior of modelled systems. We use these tools ...

  14. Abstract Interpretation of Mobile Ambients

    DEFF Research Database (Denmark)

    Hansen, René Rydhof; Jensen, J. G.; Nielson, Flemming;

    1999-01-01

    We demonstrate that abstract interpretation is useful for analysing calculi of computation such as the ambient calculus (which is based on the p-calculus); more importantly, we show that the entire development can be expressed in a constraint-based formalism that is becoming exceedingly popular...

  15. Pyelolithotomy by the use of a hydrophilous macromolecular binding material ("pyeloform" pyelotomy).

    Science.gov (United States)

    Nagy, Z; Frang, D; Jávor, A; Götz, F; Szatmári, J; Vizi, L; Kovács, G

    1984-01-01

    The use of a synthetic macromolecular hydrophilous binding material for the extraction of multiple renal calculi (" Pyeloform " pyelotomy) is reported. An account of the results of animal studies in vitro is given and the possibilities of the method in are pointed out. PMID:6724825

  16. Coagulum pyelolithotomy: impact on unrecognized stones.

    Science.gov (United States)

    Kalash, S S; Young, J D

    1985-12-01

    The use of coagulum free of thrombin to remove 313 renal calculi from 46 patients is reviewed. Twenty-six additional calculi removed from 17 patients were not apparent on preoperative studies. Of the 313 stones apparent preoperatively 3 were not extracted in the coagulum. Other means (stone forceps and so forth) were used to deliver 2 of these calculi and 1 was left in the kidney. Incisions used for these procedures included the conventional flank incision in 9 patients, a 10 cm. posterior flank incision in 30 and lumbotomy in 7. Adjunctive use of coagulum in 8 additional patients is presented. The recovery of more than the preoperatively identified renal calculi may be an advantage for coagulum pyelolithotomy. The length of hospital stay in these 46 patients averaged 4.8 days, with an average operative time of 1.22 hours. The patients returned to work within an average of 13 days. We suggest that these data are comparable to other methods of pyelonephrolithotomy. PMID:3932682

  17. Role of Endoscopic Ultrasound in Gastrointestinal Surgery

    OpenAIRE

    Biswanath P Gouda; Gupta, Tarun

    2011-01-01

    Endoscopic Ultrasound is an emerging diagnostic tool in the field of Gastrointestinal Surgery. Our review article focuses on role of EUS in staging cancers (esophageal, gastric, biliary and rectal), detection of bilio-pancreatic calculi and diagnosis of chronic pancreatitis. Potential for performing EUS based therapeutic interventions are been explored and looks promising from the initial reports.

  18. Truthful Monadic Abstractions

    DEFF Research Database (Denmark)

    Brock-Nannestad, Taus; Schürmann, Carsten

    2012-01-01

    In intuitionistic sequent calculi, detecting that a sequent is unprovable is often used to direct proof search. This is for instance seen in backward chaining, where an unprovable subgoal means that the proof search must backtrack. In undecidable logics, however, proof search may continue...

  19. Valuation Semantics for Intuitionic Propositional Calculus and some of its Subcalculi

    OpenAIRE

    Andréa Loparić

    2010-01-01

    In this paper, we present valuation semantics for the Propositional Intuitionistic Calculus (also called Heyting Calculus) and three important subcalculi: the Implicative, the Positive and the Minimal Calculus (also known as Kolmogoroff or Johansson Calculus). Algorithms based in our definitions yields decision methods for these calculi.

  20. Multiple bilateral stones as a cause of acute renal failure: Three case reports

    Directory of Open Access Journals (Sweden)

    Hulya Ozturk

    2014-04-01

    Full Text Available Complex renal stones are staghorn calculi stones >2 cm and most calculus are calcium stones. In patients found with obstruction may need an emergency intervention. Three patients with multiple stones causing bilateral renal obstruction were operated.

  1. Pathological study of elective nephrectomies for a two year period

    Directory of Open Access Journals (Sweden)

    V. Vijay Sreedhar

    2015-06-01

    Conclusion: Inflammatory causes more commonly required a nephrectomy in the study population. Chronic calculous pyelonephritis was the most common underlying pathophysiology leading to a nonfunctioning kidney thus highlighting the early treatment of renal calculi. [Int J Res Med Sci 2015; 3(6.000: 1496-1500

  2. Experimental removal of subgingival calculus with the Er:YAG laser

    Science.gov (United States)

    Keller, Ulrich; Hibst, Raimund

    1996-01-01

    The purpose of this study was to evaluate the effects of the Er:YAG laser removal of subgingival calculi in periodontal treatment and to describe laser-induced cementum surface alterations. Freshly extracted human teeth with adherent plaques and mineralized calculi were laser treated using modified quartz fiber tips in direct contact to the root surface. For the fiber tip tested, the ablation threshold was 6.5 mJ. An effective removal of calculi was possible with 50 mJ resp. 150 mJ for a triple fiber. For the latter, a mass loss with a mean of about 5.1. mg/min was achieved. Histologic examinations of the cementum surface showed smoothed appearance alternately with rough depressions of the fiber tips, which can be discussed as a good precondition for periodontal tissue regeneration. Maximum temperature increase of 1.4 K was reached in the pulp, if an additional water irrigation was applied to the root surface. From these results it can be concluded that with the Er:YAG laser an effective removal of subgingival calculi can be performed without thermal risk for the pulp.

  3. Retrograde ejaculation associated spontaneous sperm cystolithiasis in four Rhesus Macaques (Macaca mulatta)

    OpenAIRE

    Gumber, Sanjeev; Courtney, Cynthia L; Strait, Karen R; Sharma, Prachi; Freebersyser, Julie E; Crane, Maria M

    2013-01-01

    Retrograde ejaculation (RE) has been reported in humans and animals but RE with subsequent sperm calculi has rarely been reported. This report documents clinical and pathological findings of spontaneous sperm cystolithiasis in four rhesus macaques. While this condition has been associated with repeated electroejaculation, spontaneous sperm cystolithiasis is highly unusual. The animals presented with either stranguria, dysuria, hematuria, distended abdomen or lethargy. Ultras...

  4. Primary hyperoxaluria type 1: clinical manifestations in infancy and prenatal diagnosis

    DEFF Research Database (Denmark)

    Illum, N; Lavard, L; Danpure, C J;

    1992-01-01

    A 9-month-old Pakistani boy of consanguineous parents presented with uraemia preceded by pyuria from 5 weeks of age. He had no history of renal calculi or macroscopic haematuria. Renal biopsy revealed severe calcium oxalate deposition in the tubuli and fibrosis of the interstitial tissue. Liver...

  5. Can Hounsfield unit values of the cortex and papillae determined by computed tomography demonstrate the possibility of kidney stone formation?

    International Nuclear Information System (INIS)

    Purpose: This study is aimed at measuring HU values of the renal cortex and papillae in patients with nephrolithiasis and demonstrating renal changes associated with nephrolithiasis. Materials and methods: Measurements were performed with regard to HU values of the cortex and papillae of 82 patients with unilateral nephrolithiasis and 81 patients in the control group at the level of the upper pole, middle region and lower pole of both kidneys. Results: When the HU values obtained from the upper pole, middle region and lower pole of the kidney with calculi and unaffected kidney in patients with nephrolithiasis were compared with those for the control group, the difference among the groups were found to be significant (p < 0.001). A comparison of the cortex and papillae densities of the affected and unaffected kidneys in patients with unilateral nephrolithiasis were compared with regard to the upper pole and middle region, no statistically significant difference was observed with regard to both the cortex and papillae densities of the upper pole, middle region. However, in those patients with calculi in the lower pole, the region with calculi has a higher papillae density as compared to the unaffected region. Conclusion: Both kidneys in patients with calculi have a comparatively high renal cortex and papillae densities. In the future, this information may be useful in predicting which patients may develop nephrolithiasis.

  6. Drug: D03635 [KEGG MEDICUS

    Lifescience Database Archive (English)

    Full Text Available D03635 Drug Cysteamine hydrochloride (USAN); Cystagon (TN) C2H7NS. HCl 113.0066 113...eplacement/Modifiers Cysteamine D03635 Cysteamine hydrochloride (USAN) CAS: 156-57-0 PubChem: 17397739 DrugB....6096 D03635.gif Anti-urolithic [cysteine calculi] [DS:H00275] USP drug classification [BR:br08302] Enzyme R

  7. Noncommutative de Sitter and FRW spaces

    Energy Technology Data Exchange (ETDEWEB)

    Burić, Maja, E-mail: majab@ipb.ac.rs [Faculty of Physics, University of Belgrade, P.O. Box 44, 11001, Belgrade (Serbia); Madore, John, E-mail: madore@th.u-psud.fr [Laboratoire de Physique Théorique, 91405, Orsay (France)

    2015-10-24

    Several versions of fuzzy four-dimensional de Sitter space are constructed using the noncommutative frame formalism. Although all noncommutative spacetimes which are found have commutative de Sitter metric as a classical limit, the algebras and the differential calculi which define them have many differences, which we derive and discuss.

  8. On sequential composition, action prefixes and process prefix

    NARCIS (Netherlands)

    Bergstra, J.A.; Baeten, J.C.M.

    1994-01-01

    We illustrate the difference between sequential composition in process algebra axiomatisations like ACP and action prefixing in process calculi like CCS. We define both early and late input in a general framework extending ACP, and consider various subalgebras, some very close to value passing CCS,

  9. Parasitaer galdevejsinfektion

    DEFF Research Database (Denmark)

    Antonsen, A; Nielsen, P L

    2001-01-01

    In two cases of cholecystectomy for gall bladder calculi, the histological diagnoses were inflammation, fibrosis, and numerous calcified parasite eggs in the wall of the gall bladder, compatible with eggs from the liver fluke, which can infect humans who eat raw or undercooked fresh water fish (s...... (sushi!)....

  10. Chopping a Point

    DEFF Research Database (Denmark)

    Chaochen, Z.; Hansen, Michael Reichhardt

    1996-01-01

    This paper introduces a super-dense chop modality into the Duration Calculi. The super-dense chop can be used to specify a super-dense computation, where a number of operations happens simultaneously, but in a specific order. With this modality, the paper defines a real-time semantics for an OCCAM...

  11. Listen, wind energy costs nothing; Oyez tous, L'eolien ne coute rien

    Energy Technology Data Exchange (ETDEWEB)

    Poizat, F

    2008-09-15

    The author discusses the affirmation of the ADEME and the Environmental and sustainable development Ministry: the french wind park will costs in 2008 0,5 euro year for each household. He criticizes strongly this calculi, bringing many data on energy real cost today and in the next 10 years. Many references are provided. (A.L.B.)

  12. Improvements in Intracorporeal Lithotripters for Percutaneous Nephrolithotomy

    Science.gov (United States)

    Kuo, Ramsay L.

    2007-04-01

    Percutaneous nephrolithotomy (PNL) is an effective minimally invasive surgical approach for the treatment of large renal stone burden. Intracorporeal lithotripters (ICL) are utilized during PNL to fragment calculi, with some devices capable of concurrently removing fragments as well. Much progress has been made in the design of ICL devices, resulting in potentially more efficient treatment of nephrolithiasis.

  13. Structured Communication-Centered Programming for Web Services

    DEFF Research Database (Denmark)

    Carbone, Marco; Honda, Kohei; Yoshida, Nobuko

    2012-01-01

    This article relates two different paradigms of descriptions of communication behavior, one focusing on global message flows and another on end-point behaviors, using formal calculi based on session types. The global calculus, which originates from a Web service description language (W3C WS...

  14. Baxter Algebras and Umbral Calculus

    OpenAIRE

    Guo, Li

    2004-01-01

    We apply recent constructions of free Baxter algebras to the study of the umbral calculus. We give a characterization of the umbral calculus in terms of Baxter algebra. This characterization leads to a natural generalization of the umbral calculus that include the classical umbral calculus in a family of $\\lambda$-umbral calculi parameterized by $\\lambda$ in the base ring.

  15. Differential geometry of group lattices

    International Nuclear Information System (INIS)

    In a series of publications we developed ''differential geometry'' on discrete sets based on concepts of noncommutative geometry. In particular, it turned out that first-order differential calculi (over the algebra of functions) on a discrete set are in bijective correspondence with digraph structures where the vertices are given by the elements of the set. A particular class of digraphs are Cayley graphs, also known as group lattices. They are determined by a discrete group G and a finite subset S. There is a distinguished subclass of ''bicovariant'' Cayley graphs with the property ad(S)S subset of S. We explore the properties of differential calculi which arise from Cayley graphs via the above correspondence. The first-order calculi extend to higher orders and then allow us to introduce further differential geometric structures. Furthermore, we explore the properties of ''discrete'' vector fields which describe deterministic flows on group lattices. A Lie derivative with respect to a discrete vector field and an inner product with forms is defined. The Lie-Cartan identity then holds on all forms for a certain subclass of discrete vector fields. We develop elements of gauge theory and construct an analog of the lattice gauge theory (Yang-Mills) action on an arbitrary group lattice. Also linear connections are considered and a simple geometric interpretation of the torsion is established. By taking a quotient with respect to some subgroup of the discrete group, generalized differential calculi associated with so-called Schreier diagrams are obtained

  16. Analysis of LYSA-calculus with explicit confidentiality annotations

    DEFF Research Database (Denmark)

    Gao, Han; Nielson, Hanne Riis

    2006-01-01

    Recently there has been an increased research interest in applying process calculi in the verification of cryptographic protocols due to their ability to formally model protocols. This work presents LYSA with explicit confidentiality annotations for indicating the expected behavior of target prot...

  17. Disciplined structured communications with disciplined runtime adaptation

    NARCIS (Netherlands)

    Di Giusto, Cinzia; Perez, Jorge A.

    2015-01-01

    Session types offer a powerful type-theoretic foundation for the analysis of structured communications, as commonly found in service-oriented systems. They are defined upon core programming calculi which offer only limited support for expressing requirements related to runtime adaptation. This is un

  18. Noncommutative de Sitter and FRW spaces

    Energy Technology Data Exchange (ETDEWEB)

    Buric, Maja [University of Belgrade, Faculty of Physics, P.O. Box 44, Belgrade (Serbia); Madore, John [Laboratoire de Physique Theorique, Orsay (France)

    2015-10-15

    Several versions of fuzzy four-dimensional de Sitter space are constructed using the noncommutative frame formalism. Although all noncommutative spacetimes which are found have commutative de Sitter metric as a classical limit, the algebras and the differential calculi which define them have many differences, which we derive and discuss. (orig.)

  19. Expressing First-Order π-Calculus in Higher-Order Calculus of Communicating Systems

    Institute of Scientific and Technical Information of China (English)

    Xian Xu

    2009-01-01

    In the study of process calculi, encoding between different calculi is an effective way to compare the expressive power of calculi and can shed light on the essence of where the difference lies. Thomsen and Sangiorgi have worked on the higher-order calculi (higher-order Calculus of Communicating Systems (CCS) and higher-order It-calculus, respectively) and the encoding from and to first-order π-calculus. However a fully abstract encoding of first-order π-calculus with higher-order CCS is not available up-today. This is what we intend to settle in this paper. We follow the encoding strategy, first proposed by Thomsen, of translating first-order π-calculus into Plain CHOCS. We show that the encoding strategy is fully abstract with respect to early bisimilarity (first-order π-calculus) and wired bisimilarity (Plain CHOCS) (which is a bisimulation defined on wired processes only sending and receiving wires), that is the core of the encoding strategy. Moreover from the fact that the wired bisimilarity is contained by the well-established context bisimilarity, we secure the soundness of the encoding, with respect to early bisimilarity and context bisimilarity. We use index technique to get around all the technical details to reach these main results of this paper. Finally, we make some discussion on our work and suggest some future work.

  20. Adjunctive medical therapy with α-blocker after extracorporeal shock wave lithotripsy of renal and ureteral stones: a meta-analysis.

    Directory of Open Access Journals (Sweden)

    Mingchao Li

    Full Text Available Although some trials assessed the efficacy and safety of the α-blocker in facilitating renal and ureteral stones expulsion after extracorporeal shock wave lithotripsy (ESWL, the role of the α-blocker in facilitating upper urinary calculi expulsion after ESWL remain controversial.To determine the efficacy and safety of the α-blocker in facilitating renal and ureteral stones expulsion after ESWL.A literature search was carried out using the PubMed database, EMBASE and the Cochrane Library database to identify relevant studies. Two reviewers independently extracted data and assessed methodological quality. Pooled effect estimates were obtained using a fixed- and random-effects meta-analysis.The meta-analysis included 23 RCTs, α-blocker significantly enhanced expulsion rate of upper urinary tract calculi after ESWL (P<0.00001; RR 1.21; 95% CI 1.12-1.31, significantly promoted steinstrasse expulsion (P=0.03; RR 1.25; 95% CI 1.03-1.53, significantly shortened the discharge time of upper urinary tract calculi (P=0.0001; MD -2.12; 95% CI -3.20--1.04, significantly reduced the patient's pain VAS score (P=0.001; RR -1.0; 95% CI -1.61--0.39. Compared with the control group, dizziness (P=0.002; RR 5.48; 95% CI 1.91-15.77, anejaculation (P=0.02; RR 12.17; 95% CI 1.61-91.99 and headache (P=0.04; RR 4.03; 95% CI 1.04-15.72 in the α-blocker group was associated with a higher incidence.Treatment with α-blocker after ESWL appears to be effective in enhancing expulsion rate of upper urinary tract calculi, shortening the discharge time of upper urinary tract calculi, reducing the patient's pain. The side effects of α-blocker were light and few.

  1. Metabolic investigation of patients with staghorn calculus: is it necessary?

    Directory of Open Access Journals (Sweden)

    Carmen R. P. Amaro

    2009-12-01

    Full Text Available Objective: To evaluate the prevalence of metabolic disorders in patients with staghorn calculi treated at the Regional Center of Lithiasis Metabolic Studies in central region of São Paulo State, Brazil. Materials and methods: Between February 2000 and February 2008, 630 patients with urinary calculi were evaluated in the lithiasis outpatient clinic. Thirty-seven of them had staghorn calculi (35 women and 2 men. The inclusion criteria for the metabolic investigation included the absence of urological manipulation 30 days before the examination, negative urine culture and creatinine clearance > 60 mL/min. The protocol for metabolic investigation consisted of qualitative search for cystinuria. Two non-consecutive 24-hour urine samples collected to measure calcium, phosphorus, uric acid, sodium, potassium, magnesium, oxalate and citrate, and serum calcium levels , phosphorus, uric acid, sodium, potassium, magnesium, chloride, parathormone and urine pH. Results: Among patients with lithiasis, 5.9% (37/ 630 had staghorn calculus and in 48.6% (18/37 were diagnosed with urinary infection. The females were predominant for 94.5% of cases. The calculi were unilateral in 31 of cases and bilateral in six. Metabolic abnormalities were found in 68.2% of patients with hypercalciuria (64.2% and hypocitraturia (53.3% being the most common disorders. Conclusions: The presence of metabolic disorders in nearly 70% of patients with staghorn calculus reinforces the necessity for evaluation of these patients. The diagnosis and treatment of identified metabolic abnormalities can contribute to the prevention of recurrent staghorn calculi.

  2. Toxicological review and oral risk assessment of terephthalic acid (TPA) and its esters: A category approach.

    Science.gov (United States)

    Ball, Gwendolyn L; McLellan, Clifton J; Bhat, Virunya S

    2012-01-01

    Polyethylene terephthalate, a copolymer of terephthalic acid (TPA) or dimethyl terephthalate (DMT) with ethylene glycol, has food, beverage, and drinking water contact applications. Di-2-ethylhexyl terephthalate (DEHT) is a plasticizer in food and drinking water contact materials. Oral reference doses (RfDs) and total allowable concentrations (TACs) in drinking water were derived for TPA, DMT, and DEHT. Category RfD and TAC levels were also established for nine C(1)-C(8) terephthalate esters. The mode of action of TPA, and of DMT, which is metabolized to TPA, involves urinary acidosis, altered electrolyte elimination and hypercalciuria, urinary supersaturation with calcium terephthalate or calcium hydrogen terephthalate, and crystallization into bladder calculi. Weanling rats were more sensitive to calculus formation than dams. Calculi-induced irritation led to bladder hyperplasia and tumors in rats fed 1000 mg/kg-day TPA. The lack of effects at 142 mg/kg-day supports a threshold for urine saturation with calcium terephthalate, a key event for calculus formation. Chronic dietary DMT exposure in rodents caused kidney inflammation, but not calculi. Chronic dietary DEHT exposure caused general toxicity unrelated to calculi, although urine pH was reduced suggesting the TPA metabolite was biologically-active, but of insufficient concentration to induce calculi. Respective oral reference doses of 0.5, 0.5, and 0.2 mg/kg-day and total allowable drinking water concentrations of 3, 3, and 1 mg/L were derived for TPA, DMT, and DEHT. An oral RfD of 0.2 mg/kg-day for the terephthalate category chemicals corresponded to a drinking water TAC of 1 mg/L.

  3. CASE REPORT OF AN UNUSUALLY LARGE RENAL CALCULUS

    Directory of Open Access Journals (Sweden)

    Samir

    2015-01-01

    Full Text Available Renal calculus is a solid or crystal aggregation formed in the kidneys from minerals in the u rine . Many calculi are formed and passed without causing symptoms. A kidney stone is a hard, crystalline mineral material formed within the kidney or urinary tract. Renal calculi affect all geographical, racial and groups with a worldwide prevalence of bet ween 2 and 20%. Majority of the patients are usually between the 20 - 55 years of age. The highest incidence of kidney stone is in 30 - 45 years of age group and the incidence declines after the age of 50 years of age. Stones that obstruct the ureter or renal pelvis cause excruciating, intermittent pain.

  4. GIANT VESICAL CALCULUS – A CASE REPORT

    Directory of Open Access Journals (Sweden)

    Hanumanthaiah

    2014-06-01

    Full Text Available Until 20th century, bladder stones were one of the most prevalent disorders among the poor class and the incidence was especially high in childhood and adolescent. 1 The decrease in incidence of bladder calculi is attributed mainly to dietary and nutritional progress especially in children. 2 A solitary bladder calculus is usual, although multiple stones are found in 25% of cases. 3 Bladder stones are rare, and they constitute about 5% of all urinary stones, 4, 5 it is classified as migrated from upper urinary tract, primary idiopathic, or secondary calculi. 6 Bladder stones are managed by Extracorporeal Shockwave Lithotripsy (ESWL, endourology procedures, or open surgery. We report an unusual case of giant vesical calculus weighing 600grams in a 55 year old female with no evidence of hematuria, urinary retention, and dysuria.

  5. Ureteroscopy for treatment of upper urinary tract stones in children: technical considerations.

    Science.gov (United States)

    Gupta, Natasha; Ko, Joan; Matlaga, Brian R; Wang, Ming-Hsien

    2014-05-01

    The incidence of pediatric urolithiasis is increasing. While many smaller stones may pass spontaneously, surgical therapy is sometimes warranted. Surgical options include shock wave lithotripsy, ureteroscopy, percutaneous nephrolithotomy, and open surgery. Ureteroscopy represents a minimally invasive approach, and it is increasingly being used to treat pediatric upper tract calculi. Ureteroscopy is performed under anesthesia and fluoroscopic guidance, with basket extraction or lithotripsy of the calculi. Technical considerations include active or passive ureteral dilatation, the use of ureteral access sheaths for larger stone burdens, and post-operative stent placement. The current pediatric literature suggests high success rates (equal to or surpassing shock wave lithotripsy) and low complication rates. However, concerns remain regarding feasibility in patients with variant anatomies and risk due to intra-operative radiation exposure.

  6. Silicate Urolithiasis during Long-Term Treatment with Zonisamide

    Directory of Open Access Journals (Sweden)

    Satoru Taguchi

    2013-01-01

    Full Text Available Silicate urinary calculi are rare in humans, with an incidence of 0.2% of all urinary calculi. Most cases were related to excess ingestion of silicate, typically by taking magnesium trisilicate as an antacid for peptic ulcers over a long period of time; however, there also existed unrelated cases, whose mechanism of development remains unclear. On the other hand, zonisamide, a newer antiepileptic drug, is one of the important causing agents of iatrogenic urinary stones in patients with epilepsy. The supposed mechanism is that zonisamide induces urine alkalinization and then promotes crystallization of urine components such as calcium phosphate by inhibition of carbonate dehydratase in renal tubular epithelial cells. Here, we report a case of silicate urolithiasis during long-term treatment with zonisamide without magnesium trisilicate intake and discuss the etiology of the disease by examining the silicate concentration in his urine.

  7. Should cholecystography or ultrasound be the primary investigation for gallbladder disease?

    Science.gov (United States)

    de Lacey, G; Gajjar, B; Twomey, B; Levi, J; Cox, A G

    1984-01-28

    The conclusions drawn from a prospective survey of 500 patients examined by cholecystography (OCG) and ultrasound (UCG) are presented. First, both procedures were found to be highly accurate in detecting calculi, with false-negative rates of 1%. Secondly, if OCG is abandoned in favour of UCG, most acalculous adenomyomatosis (and many polyps) will not be diagnosed. If acalculous as well as calculous disease is regarded as clinically important, fluoroscopic OCG is the examination of choice. However, if a clinician wishes solely to find or exclude stones the investigations are equally accurate. Thirdly, since some calculi and some acalculous disease will be missed by either technique, serious consideration should be given to the further investigation of all gallbladders considered normal by either examination. A protocol is described which, though unorthodox, enables a decision on the status of the gallbladder to be made on a single visit to the radiology department. PMID:6141345

  8. Adenomyomatosis of the gall bladder: the NUH experience.

    Science.gov (United States)

    Chan-Wilde, C; Chew, R; Foong, W C; Wee, A

    1990-05-01

    Adenomyomatosis (AD) is a degenerative disorder of the gall bladder wall which can be complicated by chronic inflammation and calculi. The true incidence of this disorder in South East Asians is not known. Nine Chinese patients with AD were discovered amongst 200 consecutive right upper quadrant ultrasound examinations. Four of them had cholecystectomy and were diagnosed as cholecystitis by the pathologist. Adenomyomatosis can be suspected on ultrasonography, but should be confirmed by oral cholecystography (OCG). There is great disparity in the ultrasound, OCG, surgical and histopathological diagnosis of this condition. This may be due to the fact that only complicated cases of AD come to surgery, where the presence of chronic cholecystitis or calculi detracts from recognising or overshadows the presence of AD. It is not known whether uncomplicated AD has any clinical significance and whether it, if given sufficient time, will lead to inflammation of the gall bladder. PMID:2203297

  9. Recent Developments in Computed Tomography for Urolithiasis: Diagnosis and Characterization

    Directory of Open Access Journals (Sweden)

    P. D. Mc Laughlin

    2012-01-01

    Full Text Available Objective. To critically evaluate the current literature in an effort to establish the current role of radiologic imaging, advances in computed tomography (CT and standard film radiography in the diagnosis, and characterization of urinary tract calculi. Conclusion. CT has a valuable role when utilized prudently during surveillance of patients following endourological therapy. In this paper, we outline the basic principles relating to the effects of exposure to ionizing radiation as a result of CT scanning. We discuss the current developments in low-dose CT technology, which have resulted in significant reductions in CT radiation doses (to approximately one-third of what they were a decade ago while preserving image quality. Finally, we will discuss an important recent development now commercially available on the latest generation of CT scanners, namely, dual energy imaging, which is showing promise in urinary tract imaging as a means of characterizing the composition of urinary tract calculi.

  10. Hybrid Calculus of Wrapped Compartments

    CERN Document Server

    Coppo, Mario; Drocco, Maurizio; Grassi, Elena; Sciacca, Eva; Spinella, Salvatore; Troina, Angelo; 10.4204/EPTCS.40.8

    2010-01-01

    The modelling and analysis of biological systems has deep roots in Mathematics, specifically in the field of ordinary differential equations (ODEs). Alternative approaches based on formal calculi, often derived from process algebras or term rewriting systems, provide a quite complementary way to analyze the behaviour of biological systems. These calculi allow to cope in a natural way with notions like compartments and membranes, which are not easy (sometimes impossible) to handle with purely numerical approaches, and are often based on stochastic simulation methods. Recently, it has also become evident that stochastic effects in regulatory networks play a crucial role in the analysis of such systems. Actually, in many situations it is necessary to use stochastic models. For example when the system to be described is based on the interaction of few molecules, when we are at the presence of a chemical instability, or when we want to simulate the functioning of a pool of entities whose compartmentalised structur...

  11. Severe Vesico-ureteral Reflux and Urine Sequestration: Mathematical Relations and Urodynamic Consequences

    CERN Document Server

    de Jesus, Lisieux Eyer

    2009-01-01

    Some simple mathematical formulae to calculate the volumes of proximal pyeloureteral reflexive systems are presented, and the results are compared to bladder capacity values. Using the results of the calculi, the author discusses possible implications of severe urinary sequestration in the pyeloureteral systems. Using geometrical and topological approximations we calculate the volumes of ureters and renal pelvises, applying in vivo measurements obtained from conventional ultrasound, retrograde cystourethrograms and topographic anatomic references. Approximations use 2 decimals and assumed $\\pi$ value was 3.14. Ureteral and pyelic volumes are calculated, respectively, from the mathematical formula for the cylinder and cone volumes. Dolicomegaureter are compensated using proportional calculi. Bladder volumes are estimated from conventional formulae. Proximal urinary sequestration is compared between infants and older children with VUR. Mechanisms of direct induction of bladder urodynamic failure from VUR are su...

  12. Retroperitoneal laparoscopic pyelolithotomy versus extra corporeal shock-wave lithotripsy for management of renal stones

    Directory of Open Access Journals (Sweden)

    Chander Jagdish

    2010-01-01

    Full Text Available Aim: The purpose of this study was to evaluate the role of retroperitoneal laparoscopic pyelolithotomy (RPPL and its comparison with extra corporeal shock wave lithotripsy in the management of renal calculi. Materials and Methods: The study was carried out in the Department of surgery, Maulana Azad Medical College, New Delhi, India. The study included 86 cases of solitary renal calculi in the retroperitoneoscopic (RPPL group and 82 cases in the shock wave lithotripsy (SWL group. The parameters compared were stone clearance, hospital stay, number of postoperative visits, mean time to resume normal activities, number of man days lost, and analgesic requirement. Results : The RPPL group showed better stone clearance, fewer hospital visits, low analgesic requirement, fewer number of man days lost, and early resumption of normal activities, as compared to the SWL group. Conclusions : Shock wave lithotripsy, being a noninvasive modality, is an established procedure all over the world. However RPPL achieves comparable or better results in high volume centers.

  13. Retroperitoneal laparoscopic pyelolithotomy: how does it compare with percutaneous nephrolithotomy for larger stones?

    Science.gov (United States)

    2001-03-01

    Our 10-year experience of retroperitoneal laparoscopic pyelolithotomy, a rarely performed minimally invasive operative procedure, is presented. The results are compared with our own experience of percutaneous nephrolithotomy for larger renal stones. Forty-two patients with a mean age of 39.12 years underwent 43 retroperitoneal laparoscopic pyelolithotomies using Gaur's balloon technique. The total number of stones was 65 (44 pelvic and 21 calyceal) and they ranged in size between 5 and 48 mm. Two patients had chronic renal failure due to bilateral impacted renal calculi. Forty-eight percutaneous nephrolithotomies performed in the same unit during the last 2 years in patients with non-staghorn calculi > 2 cm were included for a comparative study. The open conversion rate and the drainage period for retroperitoneal laparoscopic pyelolithotomy were much higher. However, the operative time, blood loss, analgesic intake, hospital stay, residual stone rate, re-treatment rate and major complication rates were lower, compared with percutaneous nephrolithotomy. PMID:16753999

  14. Structured Operational Semantics for Graph Rewriting

    CERN Document Server

    Dorman, Andrei; 10.4204/EPTCS.59.4

    2011-01-01

    Process calculi and graph transformation systems provide models of reactive systems with labelled transition semantics. While the semantics for process calculi is compositional, this is not the case for graph transformation systems, in general. Hence, the goal of this article is to obtain a compositional semantics for graph transformation system in analogy to the structural operational semantics (SOS) for Milner's Calculus of Communicating Systems (CCS). The paper introduces an SOS style axiomatization of the standard labelled transition semantics for graph transformation systems. The first result is its equivalence with the so-called Borrowed Context technique. Unfortunately, the axiomatization is not compositional in the expected manner as no rule captures "internal" communication of sub-systems. The main result states that such a rule is derivable if the given graph transformation system enjoys a certain property, which we call "complementarity of actions". Archetypal examples of such systems are interacti...

  15. Diagnostic usefulness of computed tomography

    Energy Technology Data Exchange (ETDEWEB)

    Suzuki, K.; Tsugawa, R.; Yamakawa, Y. (Kanazawa Medical Univ., Uchinada, Ishikawa (Japan))

    1981-07-01

    Computed tomography (CT) has been used as a diagnostic technique in various urological diseases. Here demonstrated is a case of ureteral incontinence with double renal pelvis whose upper one has ectopic ureteral orifice. Also a case of ureteral stricture in transplanted kidney and three cases of uric acid calculi are demonstrated. CT provides accurate information in each diagnostic procedure. The use of CT in the diagnosis of urinary stones is estimated. CT number of 75 stones with single component shows specific distribution in relation to the component; ex. calcium stones: 900 - 1000, cystine: 700 - 800, struvite: 600 - 700, uric acid: 400 - 500. Structure and component of the stone is easily demonstrated by CT, especially about nonopaque calculi, whose image is positively displayed only by CT.

  16. Type Systems for Bigraphs

    DEFF Research Database (Denmark)

    Elsborg, Ebbe; Hildebrandt, Thomas; Sangiorgi, Davide

    We propose a novel and uniform approach to type systems for (process) calculi, which roughly pushes the challenge of designing type systems and proving properties about them to the meta-model of bigraphs. Concretely, we propose to define type systems for the term language for bigraphs, which...... of controls and a set of reaction rules, collectively a bigraphical reactive system (BRS). Possible advantages of developing bigraphical type systems include: a deeper understanding of a type system itself and its properties; transfer of the type systems to the concrete family of calculi that the BRS models......; and the possibility of modularly adapting the type systems to extensions of the BRS (with new controls). As proof of concept we present a model of a pi-calculus, develop an i/o-type system with subtyping on this model, prove crucial properties (including subject reduction) for this type system, and transfer...

  17. Reactors: A data-oriented synchronous/asynchronous programming model for distributed applications

    DEFF Research Database (Denmark)

    Field, John; Marinescu, Maria-Cristina; Stefansen, Christian Oskar Erik

    2009-01-01

    to produce a composite application. A reactor consists of two principal components: mutable state, in the form of a fixed collection of relations, and code, in the form of a fixed collection of rules in the style of Datalog. A reactor’s code is executed in response to an external stimulus, which takes......Our aim is to define the kernel of a simple and uniform programming model–the reactor model–which can serve as a foundation for building and evolving internet-scale programs. Such programs are characterized by collections of loosely-coupled distributed components that are assembled on the fly...... the form of an attempted update to the reactor’s state. As in classical process calculi, the reactor model accommodates collections of distributed, concurrently executing processes. However, unlike classical process calculi, our observable behaviors are sequences of states, rather than sequences...

  18. Comparative Study for the Effect of Tamsulosin on Biomarkers between Renal and Urethral Stone Lithotripsy

    Directory of Open Access Journals (Sweden)

    Mohammed Khalid Abood

    2015-10-01

    Full Text Available Nephrolithiasis are multi-factorial diseases that result from the combined influence of epidemiological, biochemical and genetically risk factors. Defective drainage due to urinary tract obstruction at the narrowest part (ureterovesical junction, ureteropelvic junction, and near the pelvic brim via stones will eventually cause the agonizing renal colic pain. Therapeutic managements of nephrolithiasis to relief acute colic pain are the primary objective. Non-steroidal anti-inflammatory drugs are the most commonly used drugs as suggested by many studies. It is very important to consider side effects of the drugs used in the treatment of colic pain. In order to preserve renal function and to relief obstruction, medical expulsion therapy are used for urethral calculi as a conservative management. These medications will aid the passage urethral calculi, an area that currently seems to be a field for continuous investigation.

  19. CALCIFIED URACHAL REMNANT MIMICKING AS BLADDER WALL CALCIFICATION – CASE SERIES

    Directory of Open Access Journals (Sweden)

    Parthasarathi

    2014-01-01

    Full Text Available Computer tomography of kidneys , ureters and bladder (CT KUB is the main investigation in suspected renal tract calculi. Ultrasound of kidneys , ureters and bladder (KUB region can come in hand during acute conditions especially in patients with ureteric calculus causing hydronephrosis and hydroureter. However , several patholog ies other than renal tract calculi can cause apparent urinary bladder calcification. We describe series of cases who presented with renal colic. CT KUB performed on admission revealed a calcified urachal remnant mimicking a urinary bladder wall calcificati on , confirmed by reviewing the multi - planar reformatted images. We also discuss the differential diagnoses that should be considered when presented with urinary bladder calcification. Our study shows urachus calcification is much more common in patients t han previously taught and more common in older patients of more than 50 years than younger patients. Males are commonly affected than females.

  20. Noncommutative Yang-Mills-Higgs actions from derivation-based differential calculus

    CERN Document Server

    Cagnache, Eric; Wallet, Jean-Christophe

    2008-01-01

    Derivations of a (noncommutative) algebra can be used to construct various consistent differential calculi, the so-called derivation-based differential calculi. We apply this framework to the noncommutative Moyal algebras for which all the derivations are inner and analyse in detail the case where the derivation algebras generating the differential calculus are related to area preserving diffeomorphisms. The ordinary derivations corresponding to spatial dimensions are supplemented by additional derivations necessarely related to additional covariant coordinates. It is shown that these latter have a natural interpretation as Higgs fields when involved in gauge invariant actions built from the noncommutative curvature. The UV/IR mixing problem for (some of) the resulting Yang-Mills-Higgs models is discussed. A comparition to other noncommutative geometries already considered in the litterature is given.

  1. Renal pelvic stones: choosing shock wave lithotripsy or percutaneous nephrolithotomy

    Directory of Open Access Journals (Sweden)

    Robert Marcovich

    2003-06-01

    Full Text Available Introduction of minimally invasive techniques has revolutionized the surgical management of renal calculi. Extracorporeal shock wave lithotripsy and percutaneous nephrolithotomy are now both well-established procedures. Each modality has advantages and disadvantages, and the application of each should be based on well-defined factors. These variables include stone factors such as number, size, and composition; factors related to the stone's environment, including the stone's location, spatial anatomy of the renal collecting system, presence of hydronephrosis, and other anatomic variables, such as the presence of calyceal diverticula and renal anomalies; and clinical or patient factors like morbid obesity, the presence of a solitary kidney, and renal insufficiency. The morbidity of each procedure in relation to its efficacy should be taken in to account. This article will review current knowledge and suggest an algorithm for the rational management of renal calculi with shock wave lithotripsy and percutaneous nephrolithotomy.

  2. A Derivational Approach to the Operational Semantics of Functional Languages

    DEFF Research Database (Denmark)

    Biernacka, Malgorzata

    substitutions and environment machines. In particular, we show that canonical environment-based abstract machines for evaluation in the lambda calculus, including the Krivine machine for call by name and the CEK machine for call by value, can be systematically derived from a calculus of explicit substitutions......, given a reduction strategy such as normal order or applicative order. Furthermore, we show that the syntactic correspondence applies to languages with context-sensitive reductions, which we illustrate by presenting a number of calculi of explicit substitutions with computational effects (e.g., control...... operators, input/output, stack inspection, laziness and proper tail recursion). Several of the corresponding abstract machines have been independently designed and reported as such in the literature. All the calculi are new. As an application of the syntactic and the functional correspondences, we also...

  3. The use of alpha-1 adrenergic blockers in children with distal ureterolithiasis: a systematic review and meta-analysis

    Science.gov (United States)

    Glina, F.P.; Castro, P.M.V.; Monteiro, G.G.R.; Guerra, G.C. Del; Glina, S.; Mazzurana, M.; Bernardo, W.M.

    2015-01-01

    ABSTRACT Introduction: Urinary lithiasis is the main urologic cause of emergency treatment in adult patient. In the past years, the incidence in children population has increased. However, literature about the use of alpha-1 adrenergic blockers in pediatric population with distal ureterolithiasis is still scarce. The drug acts by decreasing ureter contractions, especially in the distal portion, facilitating calculus expulsion. Objective: This review has the objective to evaluate the use of alpha-1 adrenergic blockers as medical expulsive treatment in children with distal ureterolithiasis. Evidence Acquisition: An electronic literature search was performed using the MEDLINE, COCHRANE, and LILACS databases. We further searched manually the references of the primary studies. Searches were concluded on October 4th, 2014. Articles were selected, independently and in pairs, by the respective titles and summaries. Any divergence was resolved by consensus. Evidence Synthesis: Alpha-1 adrenergic antagonists increased the probability of calculus expulsion by 27% (NNT=4). Calculi smaller than 5mm, increased by 33% (NNT=3). Larger than 5mm, increased by 34% (NNT=3). Conclusion: Alpha-1 adrenergic blocker use is related with a greater incidence of expulsion of ureteral calculi, smaller or greater than 5mm, and fewer episodes of pain when compared to ibuprofen. However it is necessary larger samples to enhance the power analysis of the expulsion of ureteral calculi larger than 5mm and the episodes of pain. Patient Summary: This review analyzed the outcome of alpha adrenergic antagonist in children with ureteral calculi. We conclude that it is the best medicine for use, since it helps the expulsion of the stone. PMID:26717117

  4. Urolithiasis in renal transplantation: Diagnosis and management

    Directory of Open Access Journals (Sweden)

    Elisa Cicerello

    2014-12-01

    Full Text Available Obiectives: To report our experience of diagnosis and multimodal management of urolithiasis in renal transplantation. Patients and Methods: From January 1995 to December 2012, 953 patients underwent renal transplantation in the Kidney Transplant Unit of Treviso General Hospital. Ten (10% of them developed urinary calculi and were referred at our institution. Their mode of presentation, investigation and treatment were recorded. Results: Seven had renal and 3 ureteral calculi. Urolithiasis was incidentally discovered on routine ultrasound in 6 patients, 1 presented with oliguria, 1 with anuria and acute renal failure and in 2 urolithiasis was found at removal of the ureteral stent. Nephrostomy tube was placed in 5 patients. Hypercalcemia with hyperparathyroidism (HPT was present in 5 patients and hyperuricemia in 3. Two patients were primary treated by shock wave lithotripsy (SWL and one of them was stone-free after two sessions. Two patients, one with multiple pielocaliceal calculi and the other with staghorn calculus in the lower calyx, were treated with percutaneous nephrolitothotomy (PCNL. Three patients were treated by ureteroscopy (URS and in one of them two treatments were carried out. One patient had calculus impacted in the uretero-vesical anastomosis and surgical ureterolithotomy with re-do ureterocystoneostomy was performed after failure of URS. Two patients with calculi discovered at removal of the ureteral stent were treated by URS. Conclusions: The incidence of urolithiasis in renal transplantation is uncommon. In the most of patients the condition occurs without pain. Metabolic anomalies and medical treatment after renal transplantation may cause stone formation. Advancements in endourology and interventional radiology have influenced the management of urolithiasis that can be actually treated with a minimal incidence of risk for the renal allograft.

  5. The use of alpha-1 adrenergic blockers in children with distal ureterolithiasis: a systematic review and meta-analysis

    Directory of Open Access Journals (Sweden)

    F.P. Glina

    2015-12-01

    Full Text Available Introduction: Urinary lithiasis is the main urologic cause of emergency treatment in adult patient. In the past years, the incidence in children population has increased. However, literature about the use of alpha-1 adrenergic blockers in pediatric population with distal ureterolithiasis is still scarce. The drug acts by decreasing ureter contractions, especially in the distal portion, facilitating calculus expulsion. Objective: This review has the objective to evaluate the use of alpha-1 adrenergic blockers as medical expulsive treatment in children with distal ureterolithiasis. Evidence Acquisition: An electronic literature search was performed using the MEDLINE, COCHRANE, and LILACS databases. We further searched manually the references of the primary studies. Searches were concluded on October 4th, 2014. Articles were selected, independently and in pairs, by the respective titles and summaries. Any divergence was resolved by consensus. Evidence Synthesis: Alpha-1 adrenergic antagonists increased the probability of calculus expulsion by 27% (NNT=4. Calculi smaller than 5mm, increased by 33% (NNT=3. Larger than 5mm, increased by 34% (NNT=3. Conclusion: Alpha-1 adrenergic blocker use is related with a greater incidence of expulsion of ureteral calculi, smaller or greater than 5mm, and fewer episodes of pain when compared to ibuprofen. However it is necessary larger samples to enhance the power analysis of the expulsion of ureteral calculi larger than 5mm and the episodes of pain. Patient Summary: This review analyzed the outcome of alpha adrenergic antagonist in children with ureteral calculi. We conclude that it is the best medicine for use, since it helps the expulsion of the stone.

  6. Smooth Frechet subalgebras of *-algebras defined by first order differential seminorms

    Indian Academy of Sciences (India)

    Subhash J Bhatt

    2016-02-01

    The differential structure in a *-algebra defined by a dense Frechet subalgebra whose topology is defined by a sequence of differential seminorms of order 1 is investigated. This includes differential Arens–Michael decomposition, spectral invariance, closure under functional calculi as well as intrinsic spectral description. A large number of examples of such Frechet algebras are exhibited; and the smooth structure defined by an unbounded self-adjoint Hilbert space operator is discussed.

  7. Soft tissue case 61

    OpenAIRE

    Aird, Lisa; Tiwari, Pari; Brown, Carl J.

    2009-01-01

    A 55-year-old man presented to the emergency department with a 12-hour history of severe crampy abdominal pain, nausea, vomiting and obstipation. The patient had a complex medical history, including coronary artery disease, lupus, hypothyroidism, epilepsy, pancreatitis and renal calculi. However, the patient had no history of a hernia or abdominal surgery. Physical examination revealed a temperature of 38.5°C and a soft distended abdomen that was diffusely tender without signs of peritonitis....

  8. [Comparative assessment of truncal and selective vagotomy combined with gastric drainage in the treatment of duodenal ulcer].

    Science.gov (United States)

    Kurygin, A A; Zhuk, A M

    1977-01-01

    Comparative estimation of trunk and selective vagotomy associated with stomach drainage operations in treatment of duodenal ulcer revealed no essential advantages of selective vagotomy in comparison with trunk one. At the same time, technically trunk vagotomy is a more simple procedure and a more reliable one in relation to ulcer cure. The question concerning high-risk of calculi formation in the gallbladder after trunk vagotomy in females is unsolved yet and needs further studies.

  9. Dietary treatment of urinary risk factors for renal stone formation. A review of CLU Working Group

    OpenAIRE

    Domenico Prezioso; Pasquale Strazzullo; Tullio Lotti; Giampaolo Bianchi; Loris Borghi; Paolo Caione; Marco Carini; Renata Caudarella; Giovanni Gambaro; Marco Gelosa; Andrea Guttilla; Ester Illiano; Marangella Martino; Tiziana Meschi; Piergiorgio Messa

    2015-01-01

    Objective: Diet interventions may reduce the risk of urinary stone formation and its recurrence, but there is no conclusive consensus in the literature regarding the effectiveness of dietary interventions and recommendations about specific diets for patients with urinary calculi. The aim of this study was to review the studies reporting the effects of different dietary interventions for the modification of urinary risk factors in patients with urinary stone disease. Materials and Methods: A s...

  10. Pathophysiology of kidney, gallbladder and urinary stones treatment with herbal and allopathic medicine: A review

    OpenAIRE

    Alok, Shashi; Jain, Sanjay Kumar; Verma, Amita; Kumar, Mayank; Sabharwal, Monika

    2013-01-01

    Medicinal plants have been known for millennia and are highly esteemed all over the world as a rich source of therapeutic agents for the prevention of various ailments. Today large number of population suffers from kidney stone, gall stone and urinary calculi. Stone disease has gained increasing significance due to changes in living conditions i.e. industrialization and malnutrition. Changes in prevalence and incidence, the occurrence of stone types and stone location, and the manner of stone...

  11. Stone treatment after urosepsis in elderly or multimorbid patients with urolithiasis

    OpenAIRE

    Albrecht, Matthias

    2014-01-01

    Calculus disease is a major cause of chronic urinary tract infection (UTI) and may promote urosepsis. In otherwise healthy patients, removal of renal calculi is the treatment of choice to prevent urosepsis. In elderly, multimorbid patients treatment of calculus disease is sometimes tedious and may increase morbidity. We sought to investigate if calculus removal in elderly, multimorbid patients decreases morbidity after initial urosepsis. Patients who were treated for urosepsis at the Depar...

  12. Calculus-related ureteral intussusception: A case report and literature review

    OpenAIRE

    James Sewell; Gideon Blecher; Ken Tsai; Conrad Bishop

    2015-01-01

    Introduction: Ureteral intussusception is a rarely reported condition, primarily as a complication of ureteric tumours. Fewer than 30 case reports have been made. This case represents the first reported case, to our knowledge, of ureteral intussusception caused by a ureteric calculus. Presentation of case: We present the case of a 70 year old man with a history of conservatively managed renal calculi, in whom obstructive ureterolithiasis was incidentally detected. Retrograde pyelography an...

  13. Renal colic, where is it headed? An observational study

    OpenAIRE

    Paolo Beltrami; Andrea Guttilla; Lorenzo Ruggera; Patrizia Bernich; Filiberto Zattoni

    2016-01-01

    Aim: In the last thirty years, the treatment for renal and ureteral calculi has undergone profound variations. The objective of this study has been to evaluate the existence of parameters which can affect the spontaneous expulsion of a symptomatic ureteral stone in a reasonably brief period of time and to identify whether certain parameters such as sex, age, the location and dimension of the stone, the presence of dilation in the urinary tract together with the administered therapy, can be us...

  14. Percutaneous cholecystolithotomy

    OpenAIRE

    1988-01-01

    A percutaneous method was used to remove stones from otherwise normal gall bladders, as assessed by cholecystography and ultrasonography. The procedure was performed in a single stage under general anaesthesia, adopting the method and instruments used for one stage percutaneous nephrolithotomy. A Foley catheter was left in the gall bladder and the system checked with contrast at 10 days to ensure free drainage and exclude residual calculi. Seven out of eight patients had a successful percutan...

  15. Ultrasonography in the Diagnosis of Gallbladder Disease

    OpenAIRE

    Birtwhistle, Richard V.; Sauerbrei, Eric E.

    1983-01-01

    Ultrasonography is the technique of choice in diagnosing gallbladder calculi. In the mid-1970s ultrasound was only accurate enough to use as an adjunct to oral cholecystography but refinements such as gray scale and real-time imaging mean that in experienced hands it has a sensitivity of 96% and a specificity of 93%. Sonography is also the test of choice in the initial evaluation of jaundiced patients. It is an excellent technique for distinguishing between obstructive and nonobstructive jaun...

  16. Abdominal Compartment Syndrome and Necrotizing Pancreatitis Following Extracorporeal Shock Wave Lithotripsy.

    Science.gov (United States)

    Gupta, S; Scambia, J; Gandillon, C; Aversano, F; Batista, R

    2016-09-01

    Extracorporeal shock wave lithotripsy (ESWL) is a common procedure in the treatment of renal calculi. There have been major complications reported with ESWL such as acute pancreatitis, bower perforation, venous thrombosis, and biliary obstruction. There are few reports in the literature of necrotizing pancreatitis secondary to ESWL. We have a case report of a 29-year-old female that developed an abdominal compartment syndrome with an acute necrotizing pancreatitis hours after extracorporeal shock wave lithotripsy. PMID:27462545

  17. TRIBULUS TERRESTRIS LINN.: A PHYTO-PHARMACOLOGICAL REVIEW

    OpenAIRE

    Prajapati PK; Patgiri BJ; Priyanka Verma; Galib G

    2013-01-01

    Plants have a significant role in maintaining human health and improving quality of life. gokshura  (Tribulus terrestris Linn.) one of such plants, is mentioned in Ayurvedic texts for  various therapeutic properties like balya (strengthening), brimhana (nutritive), rasayana (rejuvenator), mootrala (diuretic), shothahara (anti-inflammatory), vajikarana (aphrodisiac) etc. and useful in the management of mutrakrichhra (dysurea), ashmari (renal calculi) etc. It is a perennial plant, grown predomi...

  18. Parathyroid Adenoma In a Young Male with Multiple Fractures and Varied Clinical Features

    OpenAIRE

    Bhanu Murthy, R.; Srihari, V.; Lakshmi Narayana, M.

    2012-01-01

    Primary hyperparathyroidism is due to parathyroid adenoma (80–85%), hyperplasia (10–15%), carcinoma (2–3%) of cases. The most common presentation is asymptomatic hypercalcemia. Multiple pathological fractures, nephrocalcinosis as a presenting feature of primary hyperparathyroidism due to parathyroid adenoma is extremely rare at the age of 19 years. A case of parathyroid adenoma with multiple fractures of left femur, renal calculi, nephrocalcinosis, weight loss, constipation, dyspepsia abdomin...

  19. Childhood parathyroid adenoma: a rare but important cause of nephrolithiasis.

    Science.gov (United States)

    Menon, Prema; Dayal, Devi; Rao, Suhitha G; Bhattacharya, Anish; Narasimha Rao, Katragadda Lakshmi

    2016-07-01

    Primary hyperparathyroidism is very rare in children and adolescents. The management of a 12-year-old boy with renal calculi due to parathyroid adenoma is discussed. The single tumor after localization with sestamibi scintigraphy and SPECT-CT scan was excised with amelioration of symptoms. The case is reported due to the rarity of the disease and successful unilateral exploration. The association with hypopigmented areas of skin has also not been previously reported in literature. PMID:27054596

  20. Treatment of cystine stones: combined approach using open pyelolithotomy, percutaneous pyelolithotripsy, extracorporeal shock wave lithotripsy and chemolysis.

    Science.gov (United States)

    Aabech, J; Andersen, J T

    1993-01-01

    Treatment of cystine stones in the urinary tract can be difficult because of a high frequency of recurrence, resistance to Extracorporeal Shock Wave Lithotripsy (ESWL), difficulty in localization and access to peripheral stones during Percutaneous Nephrolithotripsy (PCNL), and the insufficient effect of oral chemolysis. We present two cases of urinary cystine calculi treated with a combination of pyelolithotomy, PCNL, ESWL and percutaneous irrigation chemolysis, using N-acetylcysteine and Tromethamine-E. PMID:8290924

  1. Treatment of cystine stones: combined approach using open pyelolithotomy, percutaneous pyelolithotripsy, extracorporeal shock wave lithotripsy and chemolysis

    DEFF Research Database (Denmark)

    Aabech, J; Andersen, J T

    1993-01-01

    Treatment of cystine stones in the urinary tract can be difficult because of a high frequency of recurrence, resistance to Extracorporeal Shock Wave Lithotripsy (ESWL), difficulty in localization and access to peripheral stones during Percutaneous Nephrolithotripsy (PCNL), and the insufficient ef...... effect of oral chemolysis. We present two cases of urinary cystine calculi treated with a combination of pyelolithotomy, PCNL, ESWL and percutaneous irrigation chemolysis, using N-acetylcysteine and Tromethamine-E....

  2. Procalcitonin is a strong predictor of urine culture results in patients with obstructing ureteral stones: A prospective, pilot study

    OpenAIRE

    Dimitri Papagiannopoulos; Patrick Whelan; Waseem Ahmad; James Rybak; Bala Hota; Leslie Deane; Ajay Nehra

    2016-01-01

    Purpose: The appropriate management of infected obstructing ureteral calculi is prompt genitourinary decompression. Urine cultures are the gold standard for confirming infection but often take 24–48 h to result. Although white blood cell (WBC) count is an important diagnostic laboratory test, it is a nonspecific inflammatory marker. Similarly, urinalysis (UA) can be misleading in the setting of a contaminated sample, bladder colonization, or in cases of a completely obstructed the upper urina...

  3. Detection of urinary stones at reduced radiation exposure: a phantom study comparing computed radiography and a low-dose digital radiography linear slit scanning system

    Science.gov (United States)

    Szucs-Farkas, Zsolt; Chakraborty, D. P.; Thoeny, Harriet C.; Loupatatzis, Christos; Vock, Peter; Harald, Bonel

    2010-01-01

    Objective In this experimental study we assessed the diagnostic performance of linear slit scanning radiography (LSSR) compared to conventional computed radiography (CR) in the detection of urinary calculi in an anthropomorphic phantom imitating patients weighing approximately 58 to 88 kg. Conclusion Compared to computed radiography, LSSR is superior in the detection of urinary stones and may be used for pretreatment localization and follow-up at a lower patient exposure. PMID:19457787

  4. Urinary expression of acute kidney injury biomarkers in patients after RIRS: it is a prospective, controlled study

    OpenAIRE

    Dede, Onur; Dağguli, Mansur; Utanğaç, Mazhar; Yuksel, Hatice; Bodakcı, Mehmet Nuri; Hatipoğlu, Namık Kemal; Sancaktutar, Ahmet Ali; Penbegül, Necmettin

    2015-01-01

    Objective: To evaluated the damage effects of retrograde intra-renal surgery (RIRS) on kidney tissue by measuring kidney injury molecule-1 (KIM-1), neutrophil gelatinase-associated lipocalin (NGAL), N-acetyl-β-D-glucosaminidase (NAG), liver-type fatty acid binding protein (LFABP) expression. Material and methods: We enrolled thirty consecutive patients (Group 1) who underwent RIRS that presented with renal calculi size < 2 cm. Forty-seven control patients (Group 2) with no signs or symptoms o...

  5. Ureterolithiasis: classical and atypical findings on unenhanced helical computed tomography.

    Science.gov (United States)

    Vaswani, Kuldeep K; El-Dieb, Adam; Vitellas, Kenneth M; Bennett, William F; Bova, James G

    2002-03-01

    Evaluation of patients with acute flank pain using helical computed tomography (CT) is a well-accepted, rapid, and safe procedure in the emergency setting. Various primary and secondary signs are described in the literature for evaluation of these patients. Our purpose is to demonstrate both the classical findings associated with ureteral calculi on unenhanced helical CT and atypical findings and potential pitfalls. We also provide readers with a systematic approach to interpreting unenhanced helical CT scans performed for acute flank pain.

  6. [Nonsurgical management of mild primary hyperparathyroidism].

    Science.gov (United States)

    Imanishi, Yasuo

    2016-06-01

    Primary hyperparathyroidism(PHPT)is one of the common endocrine disorders, which results clinically in nephrolithiasis, osteoporosis, muscle weakness, cardiac and psychiatric abnormalities even in a mild or asymptomatic disease. Parathyroidectomy(PTX)is the only definitive treatment for PHPT, however, some patients with sporadic PHPT refuse surgery, are medically unfit, or have residual or recurrent disease inaccessible to further surgery. These patients may require intervention for management of symptomatic or moderate to severe hypercalcemia, bone loss or kidney calculi. PMID:27230840

  7. Advances in percutaneous stone surgery

    Directory of Open Access Journals (Sweden)

    Christopher Hartman

    2015-01-01

    Full Text Available Treatment of large renal stones has changed considerably in recent years. The increasing prevalence of nephrolithiasis has mandated that urologists perform more surgeries for large renal calculi than before, and this has been met with improvements in percutaneous stone surgery. In this review paper, we examine recent developments in percutaneous stone surgery, including advances in diagnosis and preoperative planning, renal access, patient position, tract dilation, nephroscopes, lithotripsy, exit strategies, and post-operative antibiotic prophylaxis.

  8. A calculus for attribute-based communication

    DEFF Research Database (Denmark)

    Alrahman, Yehia Abd; De Nicola, Rocco; Loreti, Michele;

    2015-01-01

    The notion of attribute-based communication seems promising to model and analyse systems with huge numbers of interacting components that dynamically adjust and combine their behaviour to achieve specific goals. A basic process calculus, named AbC, is introduced that has as primitive construct...... of how well-established process calculi could be encoded into AbC is given by considering the translation into AbC of a proto-typical π-calculus process....

  9. Knowledge of knots: shapes in action

    OpenAIRE

    Casati, Roberto

    2013-01-01

    Logic is to natural language what knot theory is to natural knots. Logic is concerned with some cognitive performances; in particular, some natural language inferences are captured by various types of calculi (propositional, predicate, modal, deontic, quantum, probabilistic, etc.), which in turn may generate inferences that are arguably beyond natural logic abilities, or non-well synchronized therewith (eg. ex falso quodlibet, material implication). Mathematical knot theory accounts for some ...

  10. Pharmacognostical studies on the leaves of Plectranthus amboinicus (Lour) Spreng

    OpenAIRE

    Kaliappan Nirmala; Viswanathan Periyanayagam

    2008-01-01

    Plectranthus amboinicus (Lour) Spreng belonging to the family Lamiaceae commonly known as Karpuravalli, Omavalli in Tamil, Patta ajavayin, Patharcur in Hindi, Country borage in English is a large succulent aromatic perennial herb. It is highly aromatic pubescent herb with distinctive smelling leaves. The plant is distributed throughout in India, cultivated in the gardens. The leaves of this plant have been used in malarial fever, hepatopathy, renal and vesical calculi, cough, chronic asthma, ...

  11. Point Injection for Treating Nephritic Colic

    Institute of Scientific and Technical Information of China (English)

    李文彬; 刘文元; 姜宏睿

    2002-01-01

    Since 1994, the authors have treated 101 cases of nephritic colic by point injection therapy and achieved good curative results. Of them, 70 cases were diagnosed as having renal or ureteral calculi confirmed by abdominal X-ray and B-ultrasonic examination; and the others had the following symptoms: 1) sudden onset; 2) angina in unilateral lumbar and abdominal regions; 3) percussion-induced pain in the ipsilateral kidney region; and 4) erythrocytes or visible blood in urine found by laboratory test.

  12. Information-Based Physics: An Observer-Centric Foundation

    OpenAIRE

    Knuth, Kevin H.

    2013-01-01

    It is generally believed that physical laws, reflecting an inherent order in the universe, are ordained by nature. However, in modern physics the observer plays a central role raising questions about how an observer-centric physics can result in laws apparently worthy of a universal nature-centric physics. Over the last decade, we have found that the consistent apt quantification of algebraic and order-theoretic structures results in calculi that possess constraint equations taking the form o...

  13. Endoscopic Management of Portal Cavernoma Cholangiopathy: Practice, Principles and Strategy

    OpenAIRE

    Saraswat, Vivek A.; Rai, Praveer; Kumar, Tarun; Mohindra, Samir; Dhiman, Radha K

    2013-01-01

    Portal cavernoma cholangiopathy (PCC) is the presence of typical cholangiographic changes in patients with a portal cavernoma due to chronic portal vein thrombosis, in the absence of other biliary tract diseases. Probably due to biliary stasis related to the cavernoma, there is a high incidence of biliary sludge and calculi in PCC, which trigger symptoms that resolve with appropriate interventions. Persistent and troublesome symptoms are usually due to biliary stenoses or strictures, which ma...

  14. Spontaneous Bile Duct Rupture in Pregnancy

    OpenAIRE

    Piotrowski, Joseph J.; Greg Van Stiegmann; R. Dale Liechty

    1990-01-01

    Spontaneous bile duct rupture occurred in a 23-year-old who required emergency Cesarean section for fetal distress. This condition has not been reported in association with pregnancy. Only forty cases of spontaneous bile duct perforation in adults have been previously reported. Seventy percent of these perforations were related to biliary calculi. Sites of perforation were evenly distributed between common hepatic duct and common bile duct. Recommended treatment includes cholecystectomy, comm...

  15. Urinary Tract Imaging

    OpenAIRE

    Rowley, V. Allen

    1986-01-01

    This article reviews the current imaging investigations usually required in the work-up of common urinary tract problems such as urinary tract infection, colic, trauma, hematuria and renal failure. Radiological therapeutic techniques such as percutaneous nephrostomy for drainage of obstructed systems and percutaneous nephrolithotomy for treatment of renal calculi are briefly mentioned. The virtual elimination of percutaneous or open surgery for renal and upper urinary tract stones, resulting ...

  16. Value of color doppler ultrasound, kub and urinalysis in diagnosis of renal colic due to ureteral stones

    OpenAIRE

    Mahmoud Abdel-Gawad; Ravi Kadasne; Chandrashekar Anjikar; Emad Elsobky

    2014-01-01

    Purpose Despite the routine use of helical CT in diagnosis of renal colic, there are recent concerns regarding the radiation exposure, overuse and costs. We attempted in this retrospective study to evaluate the accuracy of ultrasound (gray-scale and color Doppler with twinkling), KUB and urinalysis in diagnosis of renal colic due to ureteral calculi presented in Emergency Room. Materials and Methods A total of 939 consecutive cases of renal colic presented to ER have been managed and eval...

  17. Practical Analysis of RSA Countermeasures Against Side-Channel Electromagnetic Attacks

    OpenAIRE

    Perin, Guilherme; Imbert, Laurent; Torres, Lionel; Maurine, Philippe

    2013-01-01

    International audience This paper analyzes the robustness of RSA countermeasures against electromagnetic analysis and collision attacks. The proposed RSA cryptosystem uses residue number systems (RNS) for fast executions of the modular calculi with large numbers. The parallel architecture is protected at arithmetic and algorithmic levels by using the Montgomery Ladder and the Leak Resistant Arithmetic countermeasures. Because the architecture can leak information through control and memory...

  18. A Survey of Quantum Programming Languages: History, Methods, and Tools

    OpenAIRE

    Sofge, Donald A.

    2008-01-01

    Quantum computer programming is emerging as a new subject domain from multidisciplinary research in quantum computing, computer science, mathematics (especially quantum logic, lambda calculi, and linear logic), and engineering attempts to build the first non-trivial quantum computer. This paper briefly surveys the history, methods, and proposed tools for programming quantum computers circa late 2007. It is intended to provide an extensive but non-exhaustive look at work leading up to the curr...

  19. Semantics of Higher-Order Quantum Computation via Geometry of Interaction

    OpenAIRE

    Hasuo, Ichiro; Hoshino, Naohiko

    2016-01-01

    While much of the current study on quantum computation employs low-level formalisms such as quantum circuits, several high-level languages/calculi have been recently proposed aiming at structured quantum programming. The current work contributes to the semantical study of such languages by providing interaction-based semantics of a functional quantum programming language; the latter is, much like Selinger and Valiron's, based on linear lambda calculus and equipped with features like the ! mod...

  20. Ethnobotany, phytochemistry and pharmacology of Biophytum sensitivum DC

    OpenAIRE

    Bharati, Abinash C.; Sahu, Alakh N.

    2012-01-01

    Medicinal plants are widely being used by the traditional medical practitioners for curing various diseases in their day-to-day practice. Biophytum sensitivum DC (Oxalidaceae) is used as a traditional folk medicine in ailments such as inflammation, arthritis, wounds, tumors and burns, gonorrhea, stomach ache, asthma, cough, degenerative joint disease, urinary calculi, diabetes, snake bite, amenorrhea and dysmenorrhea. It is a small, flowering, annual herb with sensitive leaves. It grows throu...