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Tratamiento endovascular del aneurisma de aorta abdominal / Endovascular treatment of the abdominal aorta aneurysm  

Scientific Electronic Library Online (English)

Full Text Available SciELO Mexico | Language: Spanish Abstract in spanish Objetivo: Reportar nuestra experiencia en el tratamiento endovascular en la resolución de la patología aórtica y evaluar la morbi-mortalidad. Sede: Centro Médico del Instituto de Seguridad Social del Estado de México y Municipios (ISSEMyM). Diseño: Estudio descriptivo, observacional, transversal, re [...] trospectivo. Análisis estadístico: Porcentajes como medida de resumen para variables cualitativas. Métodos: Se revisaron los expedientes clínicos de los pacientes con aneurisma de aorta abdominal (AAA) a los cuales se les realizó procedimiento endovascular entre junio de 2005 a junio de 2009. Analizando las siguientes variables: género y edad, diámetro del aneurisma aórtico, endoprótesis utilizada, patología concomitante, complicaciones, uso de hemoderivados, días de estancia intra-hospitalaria y morbi-mortalidad. Resultados: 12 pacientes, 10 del género masculino, edad promedio de 57.8 años, diámetro del aneurisma de 66.8 mm, procedimiento anestésico general en todos los pacientes, promedio de unidades de hemoderivados utilizados fue de 0.5, se presentaron tres complicaciones, dos inherentes al procedimiento endovascular. Conclusión: El tratamiento endovascular de la enfermedad aórtica se ha convertido en una opción terapéutica, que ofrece una baja morbi-mortalidad y excelentes resultados a corto plazo, siendo realizado por un grupo multidisciplinario en el área cardiovascular. Abstract in english Objective: To report our experience in the endovascular treatment to resolve aortic pathology and assess the associated morbidity and mortality. Setting: Medical Center of the Instituto de Seguridad Social del Estado de México y Municipios (ISSEMyM), Mexico. Design: Descriptive, observational retros [...] pective, transversal study. Statistical analysis: Percentages as summary measure for qualitative variables. Method: We reviewed the clinical records of patients with abdominal aorta aneurysm (AAA) that were subjected to an endovascular procedure between June 2005 and June 2009. We analyzed the following variables: gender and age, diameter of the aortic aneurysm, used endoprosthesis, concomitant pathology, complications, use of hemoderivates, length of in-hospital stay, morbidity, and mortality. Results: We found 12 patients, 10 were men, average age of 57.8 years, aneurysm diameter of 66.8 mm, general anesthesia was used in all patients, the average of hemoderivate units was of 0.5, three complications occurred, two of them were inherent to the endovascular procedure. Conclusion: Endovascular treatment of aortic disease has become a therapeutic alternative that offers a low morbidity and mortality and excellent results in the short term when it is performed by a multidisciplinary team in the cardiovascular area.

Fernando, Rodríguez-Ortega; Marco Antonio, Hernández-Mercado; Jesús A, Reyes-Corona; Neyra, Gómez-Ríos; Antonio, Jaymes-Nuñez; Humberto, Alegría-García; Javier, Palma-Mercado.

2011-03-01

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Aneurisma de la aorta abdominal: Tratamiento endovascular con una endoprótesis fenestrada / Abdominal aortic aneurysm: Endovascular treatment with fenestrated endoprothesis  

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: Spanish Abstract in spanish El tratamiento endovascular de los aneurismas de aorta abdominal es una alternativa a la cirugía abierta para pacientes de alto riesgo. Consiste en la exclusión del saco aneurismático mediante la interposición de una endoprótesis colocada por vía femoral. El tratamiento endovascular no puede ser uti [...] lizado en todos los pacientes. Una limitación frecuente la constituye el nacimiento de una arteria visceral desde el saco aneurismático. Para contrarrestar esta limitación recientemente se han desarrollado endoprótesis fenestradas que presentan orificios que se corresponden con el nacimiento de las arterias involucradas en el aneurisma evitando su oclusión, permitiendo de esta manera el tratamiento endovascular. En esta comunicación se presenta un caso de tratamiento endovascular de un aneurisma de aorta abdominal mediante la colocación de una endoprótesis fenestrada en un paciente cuya arteria renal izquierda nacía directamente del saco aneurismático. Abstract in english Endovascular treatment of the abdominal aortic aneurysm is consider an alternative to open surgery for high risk patients. Its goal is to exclude the aneurysm from the circulation by using an endoprothesis introduced from a femoral approach. Patients must be strictly selected to avoid possible compl [...] ications. The most frequent limitation is related to anatomic contraindications such as visceral arteries involved in the aneurysm. Fenestrated endograft have been recently developed to allow endovascular treatment when anatomic features contraindicate classic endovascular procedures. Fenestrated endograft have holes that match with the origin of the visceral arteries maintaining its potency. In this paper we report the endovascular treatment of an abdominal aortic aneurysm by using a fenestrated endoprothesis in a patient whose left renal artery is originated from the aneurysm.

Román, Rostagno; Vicente, Cesareo; Ricardo, García-Mónaco; Oscar, Peralta; Alberto, Domenech; Daniel, Bracco.

2008-12-01

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Aneurisma de la aorta abdominal: Tratamiento endovascular con una endoprótesis fenestrada Abdominal aortic aneurysm: Endovascular treatment with fenestrated endoprothesis  

Directory of Open Access Journals (Sweden)

Full Text Available El tratamiento endovascular de los aneurismas de aorta abdominal es una alternativa a la cirugía abierta para pacientes de alto riesgo. Consiste en la exclusión del saco aneurismático mediante la interposición de una endoprótesis colocada por vía femoral. El tratamiento endovascular no puede ser utilizado en todos los pacientes. Una limitación frecuente la constituye el nacimiento de una arteria visceral desde el saco aneurismático. Para contrarrestar esta limitación recientemente se han desarrollado endoprótesis fenestradas que presentan orificios que se corresponden con el nacimiento de las arterias involucradas en el aneurisma evitando su oclusión, permitiendo de esta manera el tratamiento endovascular. En esta comunicación se presenta un caso de tratamiento endovascular de un aneurisma de aorta abdominal mediante la colocación de una endoprótesis fenestrada en un paciente cuya arteria renal izquierda nacía directamente del saco aneurismático.Endovascular treatment of the abdominal aortic aneurysm is consider an alternative to open surgery for high risk patients. Its goal is to exclude the aneurysm from the circulation by using an endoprothesis introduced from a femoral approach. Patients must be strictly selected to avoid possible complications. The most frequent limitation is related to anatomic contraindications such as visceral arteries involved in the aneurysm. Fenestrated endograft have been recently developed to allow endovascular treatment when anatomic features contraindicate classic endovascular procedures. Fenestrated endograft have holes that match with the origin of the visceral arteries maintaining its potency. In this paper we report the endovascular treatment of an abdominal aortic aneurysm by using a fenestrated endoprothesis in a patient whose left renal artery is originated from the aneurysm.

Román Rostagno

2008-12-01

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Tratamiento de aorta abdominal e ilíacas con técnica endovascular: Experiencia quirúrgica / Treatment of abdominal aorta and iliac arteries with endovascular technique  

Scientific Electronic Library Online (English)

Full Text Available SciELO Colombia | Language: Spanish Abstract in spanish Antecedentes: desde 1991 la técnica endovascular se ha aplicado con éxito en el manejo de los aneurismas de aorta infrarrenal, y se ha perfeccionado de manera tal que rápidamente se ha convertido en una alternativa para pacientes de alto riesgo para la cirugía convencional. Objetivo: describir los r [...] esultados institucionales en el manejo de las patologías de aorta abdominal e ilíacas mediante técnica endovascular desde 2003 a 2005. Diseño-Método: estudio descriptivo, longitudinal, retrospectivo, en el que se analizaron las historias clínicas de los pacientes sometidos a procedimiento endovascular de aorta abdominal e ilíacas. El análisis se realizó en Stata 8,0 S/E. Resultados: a 9 pacientes se les realizó exclusivamente manejo de lesiones en aorta abdominal e ilíacas. Todos los pacientes del estudio fueron hombres con edad media de 68,9 + 8,1 años. Los diagnósticos fueron aneurisma de aorta infrarrenal en 6 pacientes y aneurismas anastomóticos en los 3 restantes. Se evidenció requerimiento de endoprótesis en promedio de 1,9 + 0,8. Se realizó puente femoro-femoral como procedimiento simultáneo en 4 de los 9 pacientes. El 77,8% de los pacientes no tuvo complicaciones. La mortalidad por el procedimiento alcanzó el 22% (2 pacientes), si bien cabe anotar que las complicaciones se presentaron sólo en esos dos pacientes. Conclusiones: la exclusión de aneurismas de aorta y de ilíacas con endoprótesis modulares, se está implementando ampliamente como una opción válida de tratamiento, con resultados excelentes que evitan los riesgos de la intervención convencional y la morbilidad asociada. Abstract in english Antecedents: since 1991 endovascular technique has been successfully used in the management of infra-renal aortic aneurysms and it has been improved in such a way that it has quickly turned into an alternative for patients considered having high risk for conventional surgery. Objective: describe the [...] institutional results in the management of abdominal aortic pathologies through endovascular technique from 2003 to 2005. Design-Method: descriptive, longitudinal, retrospective study in which clinical histories of patients that underwent an endovascular procedure of abdominal aorta and iliac arteries were analyzed. The analysis was performed in Stata 8,0 S/E. Results: 9 patients received exclusively treatment for abdominal aortic and iliac lesions. All were male individuals with mean age 68.9 ± 8.1 years. 6 patients had diagnosis of infra-renal aortic aneurysm and the other 3 had anastomotic aneurysms. Requirement of endoprosthesis was evidenced in an average of 1.9 ± 0.8. Femoro-femoral bypass surgery was performed as simultaneous procedure in 4 of the 9 patients. 77.8% of patients had no complications. Mortality due to the procedure was 22% (2 patients) and it is important to notice that only these 2 patients had complications. Conclusions: exclusion of aortic and iliac aneurysms with modular endoprosthesis is being widely implemented as a valid treatment option, with excellent results that avoid the risks of conventional surgery and its associated morbidity.

Juan G, Barrera; Ligia C, Mateus; Marisol, Carreño; Jorge E, Bayter; José F, Saaibi; Carlos S, Balestrini; Melquisedec, Gutiérrez; Jaime, Calderón; Víctor R, Castillo; Oscar F, Calvo; Jimmy G, Muñoz; Carlos, Santos; Omar F, Gomezese; Freddy, López; Camilo, Pizarro; Carlos A, Luengas; Ángel M, Chávez.

2007-08-01

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TRATAMIENTO PERCUTÁNEO CON PRÓTESIS ENDOVASCULAR DE COARTACIÓN DE AORTA ABDOMINAL EN UN ADULTO / Percutaneous treatment with endovascular prosthesis of abdominal aortic coarctation in an adult  

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Full Text Available Resumen: La coartación de la aorta abdominal es una afección vascular no hereditaria poco frecuente, que afecta a hombres y mujeres por igual. Recientemente ha sido nombrada como “Síndrome aórtico medio”, y los hallazgos clínicos son similares a los de la CoAo típica. Para el diagnóstico, se debe recurrir a la resonancia magnética o a la arteriografía, y las opciones terapéuticas incluyen la dilatación percutánea con catéter-globo, el tratamiento quirúrgico y, por último, como opción más novedosa, la implantación de prótesis endovasculares. En este artículo presentamos el caso de una mujer de 45 años de edad, exfumadora, con antecedentes de artritis reumatoidea e hipertensión arterial que presentaba claudicación de miembros inferiores durante la marcha. Existía una disminución bilateral marcada de los pulsos femorales y el Doppler, y mostró un componente amortiguado en ambas arterias femorales y poplíteas. La AngioTAC encontró una estenosis significativa del tercio distal de la aorta abdominal infrarrenal, con hipoplasia marcada de la ilíaca derecha. La aortografía corroboró el diagnóstico (gradiente de 80 mmHg. A través de dos introductores arteriales por las arterias femorales se avanzaron dos catéteres-globo MATCH-35 de 5.0x80 mm que se inflaron simultáneamente y posteriormente, se implantó un stent MEDTRONIC “Bridge Assurant” de 10 x 30 mm en el segmento estenótico, sin complicaciones. El gradiente residual fue de 10 mmHg. La paciente evolucionó favorablemente y fue egresada a las 24 horas del procedimiento. / Abstract: Coarctation of the abdominal aorta is an uncommon, non-inherited vascular condition that affects men and women alike. It has been recently named as "middle aortic syndrome", and the clinical findings are similar to those of typical aortic coarctation. For diagnosis, one must make use of magnetic resonance imaging or arteriography, and therapeutic options include percutaneous balloon catheter dilatation, surgical treatment and, finally, as a more novel option, the implantation of stents. In this paper we present the case of a 45-year-old female, ex-smoker with a history of rheumatoid arthritis and hypertension who presented claudication of lower limbs during gait. There was a marked bilateral decrease of the femoral and Doppler pulses, and showed a damping factor in both femoral and popliteal arteries. The CT angiography found a significant stenosis of the distal third of the infrarenal abdominal aorta with marked hypoplasia of the right iliac. Aortography confirmed the diagnosis (gradient of 80 mmHg. Using two arterial sheaths, two-balloon catheters MATCH-35, 5.0x80 mm were introduced through femoral arteries, simultaneously inflated and subsequently a MEDTRONIC "Bridge Assurant" stent of 10x30 mm was implanted in the stenotic segment; with no complications. The residual gradient was 10 mmHg. The patient improved and was discharged form the hospital 24 hours after the procedure.

Luis Felipe Vega Fleites

2010-12-01

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Tratamiento endovascular de aneurisma aórtico abdominal: resultados en 80 pacientes consecutivos Endovascular repair of abdominal aortic aneurysm: Results in 80 consecutive patients  

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Full Text Available Background: Endovascular repair of abdominal aortic aneurysms (AAA avoids laparotomy, shortens hospital stay and reduces morbidity and mortality related to surgical repair, allowing full patient recovery in less time. Aim: To report short and long term results of endovascular repair of AAA in 80 consecutive patients treated at our institution. Patients and Methods: Between September 1997 and February 2005, three women and 77 men with a mean age 73.6±7.7 years with AAA 5.8±1.0 cm in diameter, were treated. The surgical risk of 38% of patients was grade III according to the American Society of Anesthesiologists classification. Each procedure was performed in the operating room, under local or regional anesthesia, with the aid of digital substraction angiography. The endograft was deployed through the femoral artery (83.7% bifurcated, 16.3% tubular graft. A femoro-femoral bypass was required in 11.3% of cases. Follow-up included a spiral CT scan at 1, 6 and 12 months postoperatively, and then annually. Results: Endovascular repair was successfully completed in 79/80 patients (98.7% technical success. The procedures lasted 147±71 min. Length of stay in the observation unit was 20.6±13.5 h. Blood transfusion was required in 10%. Sixty two percent of the patients were discharged before 72 h. One patient died 8 days after surgery due to a myocardial infarction (1.3%. During follow-up (3-90 months, 1 patient developed late AAA enlargement due to a type I endoleak, requiring a new endograft. No AAA rupture was observed. Survival at 4 years was 84.2% (SE =9.2. Endovascular re-intervention free survival was 82.7% (SE =9.5. Conclusion: Endovascular surgery allows effective exclusion of AAA avoiding progressive enlargement and/or rupture and is a good alternative to open repair. Close and frequent postoperative follow up is mandatory

Francisco Valdés E

2006-10-01

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Tratamiento endovascular de aneurisma aórtico abdominal: resultados en 80 pacientes consecutivos / Endovascular repair of abdominal aortic aneurysm: Results in 80 consecutive patients  

Scientific Electronic Library Online (English)

Full Text Available SciELO Chile | Language: Spanish Abstract in spanish [...] Abstract in english Background: Endovascular repair of abdominal aortic aneurysms (AAA) avoids laparotomy, shortens hospital stay and reduces morbidity and mortality related to surgical repair, allowing full patient recovery in less time. Aim: To report short and long term results of endovascular repair of AAA in 80 co [...] nsecutive patients treated at our institution. Patients and Methods: Between September 1997 and February 2005, three women and 77 men with a mean age 73.6±7.7 years with AAA 5.8±1.0 cm in diameter, were treated. The surgical risk of 38% of patients was grade III according to the American Society of Anesthesiologists classification. Each procedure was performed in the operating room, under local or regional anesthesia, with the aid of digital substraction angiography. The endograft was deployed through the femoral artery (83.7% bifurcated, 16.3% tubular graft). A femoro-femoral bypass was required in 11.3% of cases. Follow-up included a spiral CT scan at 1, 6 and 12 months postoperatively, and then annually. Results: Endovascular repair was successfully completed in 79/80 patients (98.7% technical success). The procedures lasted 147±71 min. Length of stay in the observation unit was 20.6±13.5 h. Blood transfusion was required in 10%. Sixty two percent of the patients were discharged before 72 h. One patient died 8 days after surgery due to a myocardial infarction (1.3%). During follow-up (3-90 months), 1 patient developed late AAA enlargement due to a type I endoleak, requiring a new endograft. No AAA rupture was observed. Survival at 4 years was 84.2% (SE =9.2). Endovascular re-intervention free survival was 82.7% (SE =9.5). Conclusion: Endovascular surgery allows effective exclusion of AAA avoiding progressive enlargement and/or rupture and is a good alternative to open repair. Close and frequent postoperative follow up is mandatory

Francisco, Valdés E; Renato, Mertens M; Albrecht, Krämer Sch; Michel, Bergoeing R; Leopoldo, Mariné M; Roberto, Canessa B; Alvaro, Huete G; Jeanette, Vergara G; Magaly, Valdebenito C; Dixiana, Rivera D.

1265-12-01

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Tratamiento endovascular de las patologías de aorta -Estado del arte-: Parte 1 - Aneurismas de aorta abdominal Endovascular treatment of aortic pathologies -State of the art-: Part 1 - Aneurysms of abdominal aorta  

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Full Text Available En la actualidad, el tratamiento endovascular de las patologías de aorta es una alternativa a la cirugía abierta. Éste ha demostrado ser seguro ya que arroja resultados iguales o superiores que el grupo quirúrgico. En este artículo se presenta el estado actual del tratamiento con endoprótesis de las patologías de aorta, así como las indicaciones, las contraindicaciones y el futuro del tratamiento con este tipo de dispositivos.Endovascular treatment of aortic pathologies is actually an alternative to open surgery. It has proven to be safe, showing similar or better results to those achieved by surgery. In this article, treatment of aortic pathologies by means of endoprosthesis is presented, as well as its indications, contraindications and future treatment with this kind of devices.

Carlos E Uribe

2007-12-01

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Tratamiento endovascular de las patologías de aorta -Estado del arte-: Parte 1 - Aneurismas de aorta abdominal / Endovascular treatment of aortic pathologies -State of the art-: Part 1 - Aneurysms of abdominal aorta  

Scientific Electronic Library Online (English)

Full Text Available SciELO Colombia | Language: Spanish Abstract in spanish En la actualidad, el tratamiento endovascular de las patologías de aorta es una alternativa a la cirugía abierta. Éste ha demostrado ser seguro ya que arroja resultados iguales o superiores que el grupo quirúrgico. En este artículo se presenta el estado actual del tratamiento con endoprótesis de las [...] patologías de aorta, así como las indicaciones, las contraindicaciones y el futuro del tratamiento con este tipo de dispositivos. Abstract in english Endovascular treatment of aortic pathologies is actually an alternative to open surgery. It has proven to be safe, showing similar or better results to those achieved by surgery. In this article, treatment of aortic pathologies by means of endoprosthesis is presented, as well as its indications, con [...] traindications and future treatment with this kind of devices.

Carlos E, Uribe; Luis I, Calderón; Pablo, Castro; Germán S, Gómez; Edgar F, Hurtado; Gilberto, Estrada.

2007-12-01

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Endovascular Repair of a Blunt Abdominal Aortic Injury  

OpenAIRE

Blunt abdominal aortic injury is an uncommon traumatic finding. In the past, treatment options have traditionally consisted of open operative repair; however, the development of endovascular surgery has created new interventional possibilities. This case is presented to demonstrate the applications of endovascular abdominal aortic repair for a blunt traumatic injury.

Tobler, William D.; Tan, Tze-woei; Farber, Alik

2012-01-01

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Endovascular treatment of abdominal aortic aneurysms.  

Science.gov (United States)

Patients with abdominal aortic aneurysms (AAAs) are usually treated with endovascular aneurysm repair (EVAR), which has become the standard of care in many hospitals for patients with suitable anatomy. Clinical evidence indicates that EVAR is associated with superior perioperative outcomes and similar long-term survival compared with open repair. Since the randomized, controlled trials that provided this evidence were conducted, however, the stent graft technology for infrarenal AAA has been further developed. Improvements include profile downsizing, optimization of sealing and fixation, and the use of low porosity fabrics. In addition, imaging techniques have improved, enabling better preoperative planning, stent graft placement, and postoperative surveillance. Also in the past few years, fenestrated and branched stent grafts have increasingly been used to manage anatomically challenging aneurysms, and experiments with off-label use of stent grafts have been performed to treat patients deemed unfit or unsuitable for other treatment strategies. Overall, the indications for endovascular management of AAA are expanding to include increasingly complex and anatomically challenging aneurysms. Ongoing studies and optimization of imaging, in addition to technological refinement of stent grafts, will hopefully continue to broaden the utilization of EVAR. PMID:24343568

Buck, Dominique B; van Herwaarden, Joost A; Schermerhorn, Marc L; Moll, Frans L

2014-02-01

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Complications of Endovascular Repair of Abdominal Aortic Aneurysms: A Review  

International Nuclear Information System (INIS)

The endovascular procedure for repair of abdominal aortic aneurysms has had an enormous impact on the treatment of this challenging disease. Complications, however, do occur and it is important to have a thorough understanding of the array of complications and appropriate management strategies. In this review of endovascular complications, we describe early and late complications paying particular attention to preventive, treatment and surveillance strategies

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Endovascular Treatment of Proximal Bilateral Iliac Limb Dislocation and Kinking following Endovascular Abdominal Aortic Aneurysm Repair  

International Nuclear Information System (INIS)

We report the case of a 69-year-old man with a late type 1b endoleak due to proximal migration of both iliac limbs 5 years after endovascular repair of an abdominal aortic aneurysm. The endovascular method used to correct bilaterally this condition is described. Final angiographic control shows patency of the stent-graft without signs of endoleak

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Endovascular treatment of abdominal aortic paraanastomotic pseudoaneurysms after surgical reconstruction  

International Nuclear Information System (INIS)

Purpose: To evaluate the efficacy of endovascular treatment of paraaortic postoperative abdominal aortic pseudoaneurysms. Materials and methods: From April 1996 to November 2007 five men with paraaortic postoperative abdominal aortic pseudoaneurysm underwent endovascular treatment. Average age was 64.2 years (range 54-73). The average time interval between the primary surgery and endovascular treatment was 12.4 years (4 months-23 years). Three patients were treated by aortouniiliacal stentgrafts and two patients by tube stentgrafts. Results: Technical success rate was 100%. Pseudoaneurysms were primarily excluded from circulation without perioperative complications in all patients. At follow-up (mean 38.5 months) there were no deaths and no endoleaks. In one patient thrombosis of stentgraft was found and it was successfully treated by thrombectomy. All pseudoaneurysms still continued to be excluded from circulation in the last follow-up. Conclusion: Endovascular treatment is minimally invasive, effective and safe option of surgery for paraaortic postoperative pseudoaneurysms.

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Endovascular treatment of abdominal aortic aneurysms: what about the doses?  

Energy Technology Data Exchange (ETDEWEB)

Entrance surface doses and dose-area products to patients and finger doses to vascular surgeons and interventional radiologists has been measured during endovascular treatment of abdominal aortic aneurysms. The doses to the patients have potential to be high, but it is possible to keep the fingerdose to the operators low with a good working technique. (Author)

Widmark, A.; Staxrud, L. E.; Friberg, E. G.; Gjolberg, Bay D.; Jorgensen, J. J.

2002-07-01

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MRI-based Assessment of Endovascular Abdominal Aortic Aneurysm Repair  

OpenAIRE

Imaging techniques play a key role in the Endovascular Abdominal Aortic Aneurysm Repair (EVAR) follow-up. The most important parameters monitored after EVAR are the aneurysm size and the presence of endoleaks. Currently, computed tomographic angiography (CTA) is the most commonly used imaging modality for EVAR follow-up. Important advantages of CTA are its wide availability and relatively low costs. The most important disadvantages are the need for ionizing radiation and iodinated contrast ag...

Laan, M. J.

2007-01-01

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Endovascular Treatment of Ruptured Abdominal Aortic Aneurysm with Aortocaval Fistula  

International Nuclear Information System (INIS)

Aortocaval fistula (ACF) is a rare complication of abdominal aortic aneurysm (AAA). We report the endovascular repair of an AAA rupture into the inferior vena cava. A 78-year-old woman was admitted to our hospital for acute hypotension. She presented with a pulsatile abdominal mass and became rapidly anuric. Abdominal computed tomography (CT) showed an AAA rupture into the inferior vena cava. The features of the AAA made it suitable for endovascular repair. To prevent pulmonary embolism caused by the presence of sac thrombosis near the vena cava lumen, a temporary vena cava filter was deployed before the procedure. A bifurcated stent-graft was placed with the patient under local anaesthesia, and the AAA was successfully treated. A transient type II endoleak was detected on CT 3 days after endograft placement. At routine follow-up 6 and 12 months after the procedure, the patient was in good clinical condition, and the type II endoleak had sealed completely. Endovascular treatment offers an attractive therapeutic alternative to open repair in case of ACF; however, only small numbers of patients have been treated, and long-term follow-up interval is lacking.

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Emergency Endovascular Treatment of Abdominal Aortic Aneurysms: Feasibility and Results  

International Nuclear Information System (INIS)

Purpose. To assess the feasibility and effectiveness of emergency endovascular treatment of abdominal aortic aneurysms (AAAs). Methods. During 36 months we treated, on an emergency basis, 30 AAAs with endovascular exclusion. In 21 hemodynamically stable patients preoperative CT angiography (CTA) was performed to confirm the diagnosis and to plan the treatment; 9 patients with hemorrhagic shock were evaluated with angiography performed in the operating room. Twenty-two Excluder (Gore) and 8 Zenith (Cook) stent-grafts (25 bifurcated and 5 aorto-uni-iliac) were used. The follow-up was performed by CTA at 1, 3, 6, and 12 months. Results. Technical success was achieved in 100% of cases with a 10% mortality rate. The total complication rate was 23% (5 increases in serum creatinine level and 2 wound infections). During the follow-up, performed in 27 patients (1-36 months, mean 15.2 months), 4 secondary endoleaks (15%) (3 type II, 2 spontaneously thrombosed and 1 under observation, and 1 type III treated by iliac extender insertion) and 1 iliac leg occlusion (treated with femoro-femoral bypass) occurred. We observed a shrinkage of the aneurysmal sac in 8 of 27 cases and stability in 19 of 27 cases; we did not observe any endotension. Conclusions. Endovascular repair is a good option for emergency treatment of AAAs. The team's experience allows correct planning of the procedure in emergency situations also, with technical results comparable with elective repair. In our experierable with elective repair. In our experience the bifurcated stent-graft is the device of choice in patients with suitable anatomy because the procedure is less time-consuming than aorto-uni-iliac stent-grafting with surgical crossover, allowing faster aneurysm exclusion. However, further studies are required to demonstrate the long-term efficacy of endovascular repair compared with surgical treatment

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Tratamiento endovascular de transecciones agudas de la aorta descendente / Endovascular treatment of acute traumatic aortic rupture  

Scientific Electronic Library Online (English)

Full Text Available SciELO Chile | Language: Spanish Abstract in spanish Los accidentes por desaceleración súbita se asocian a transección de la aorta torácica, falleciendo 85-90% de ellos en el sitio del suceso. Los que sobreviven presentan habitualmente politraumatismo asociado grave, teniendo la reparación quirúrgica convencional de la aorta una alta morbimortalidad. [...] La reparación endovascular es una alternativa menos invasiva y de menor morbi-mortalidad. Objetivo: Analizar los resultados de la reparación endovascular de transecciones agudas de la aorta torácica. Pacientes y Métodos: Se revisan los antecedentes de los pacientes tratados entre agosto de 2002 y marzo de 2010. Resultados: Tratamos 16 pacientes (14 hombres, 42,7 ± 15,8 años, extremos 24-74) con transección traumática aguda de aorta torácica descendente. Quince presentaban lesiones asociadas: traumatismo encéfalo-craneano (7), fractura de huesos largos (9), laceración esplénica (4), hepática (1), renal (3). La causa del accidente fue vehicular en 13 casos y caída de altura en 3. El diagnóstico fue realizado mediante tomograña axial computada al ingreso y luego angiograña en la sala de operaciones. El tratamiento consistió en la cobertura de la zona de transección mediante el implante de una endoprótesis, siendo necesario cubrir la arteria subclavia izquierda en 11 casos, sin requerir revascularización de la extremidad. El éxito técnico fue 100%, no hubo mortalidad relacionada al procedimiento. No hubo paraplejia. Un paciente de 60 años fallece al 5to día por lesiones asociadas graves. En el seguimiento alejado a 30,8 meses (1-80) no ha habido complicaciones ni reintervenciones. Conclusión: La cirugía endovascular es una alternativa eficaz y con baja morbimortalidad para el tratamiento de transecciones de la aorta torácica. Abstract in english Background: Traumatic rupture of the thoracic aorta as a result from high-speed deceleration injury is associated with a mortality rate of 80% to 90% at the scene of the accident. Survivors usually have life-threatening injuries to other organ systems. Standard open repair is associated with a high [...] penoperative morbidity and mortality. Endografting offers a less invasive alternative to open surgical repair. Aim: To evaluate results of endovascular management of acute traumatic descending thoracic aortic ruptures. Methods: Between August 2002 and March 2010, patients treated for this trauma were reviewed. Results: 16 patients (fourteen males mean age 42.7 ± 15.8 years, range 24-74) underwent endovascular treatment of an acute aortic rupture. Associated traumas in fifteen patients were: severe brain (7), spleen (4), liver (1), kidney (3) and large bone (9) injuries. Motor vehicle accidents caused 13 of the injuries and fall from height 3. Rupture was diagnosed with admission CT sean and confirmed by intraoperative angiogram. Patients were treated with thoracic aortic endograft, in 11 cases the left subclavian artery was covered with no need for further revascularization. Technical success was 100%, no procedure-related mortality or paraplegia was observed. One patient died 5 days after the procedure due to severe associated injuries. During a mean follow-up of 30.8 months (range 1-80), no deaths, complications or need for further interventions presented. Conclusion: Endovascular treatment of acute traumatic aortic isthmic rupture is encouraging and compares favorably to open surgical approach with low morbidity and mortality rates.

LEOPOLDO, MARINÉ M; RENATO, MERTENS M; FRANCISCO, VALDÉS E; ALBRECHT, KRÄMER SCH; MICHEL, BERGOEING R; MIGUEL, PLAZA DE LOS REYES Z; FROILÁN, FERNÁNDEZ S.

2011-02-01

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Oclusión de la aorta abdominal infrarrenal. Reconstrucción endovascular con stent  

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Full Text Available Introducción La oclusión total de la aorta abdominal es de presentación poco frecuente y afecta más a menudo a mujeres de edad mediana con antecedentes de tabaquismo y dislipidemia. El punto de partida de la terapéutica endovascular en la aorta fue la angioplastia en las arterias ilíacas y fue progresando desde el balón hasta la colocación de stents.ObjetivoComunicar nuestros resultados inmediatos y el seguimiento a mediano plazo de pacientes con oclusión de la aorta abdominal tratadas con stents por vía endovascular.Material y métodosDesde octubre de 1998 a mayo de 2005 en nuestro servicio se trataron 5 pacientes de sexo femenino por oclusión total de la aorta abdominal, con síntomas de claudicación grave de ambos miembros inferiores. Los procedimientos se realizaron con anestesia local y sedación. Por vía femoral, se intenta recanalizar con las cuerdas de Whooley o hidrófila Glidewire. Posteriormente se realiza un angiograma abdominal e intercambio por cuerda Amplatz con la cual se avanza el balón para realizar las dilataciones antes de implantar el stent. Las pacientes con lesiones ilíacas también se trataron con stent. El índice tobillo-brazo era de 0,71. El promedio de hospitalización fue de 2 días. Al alta se indicaron clopidogrel y aspirina como medicación antiplaquetaria, excepto la primera paciente (ticlopidina y aspirina. El seguimiento fue clínico y por ecografía Doppler color a la semana, al mes, a los 6 meses y a los 12 meses.ResultadosLas pacientes eran de sexo femenino, con antecedentes de tabaquismo y dislipidemia. Todos los procedimientos fueron técnicamente exitosos, con mejoría del índice tobillo-brazo a 0,98. Una paciente presentó un hematoma inguinal en el sitio de punción, con buena evolución posterior. En el seguimiento alejado clínico y por ultrasonido se observó una permeabilidad de la aorta del 100%, con estenosis en una paciente tratada a nivel de la arteria ilíaca en el segmento no cubierto por el stent.ConclusionesEn este grupo de pacientes con oclusión total de la aorta abdominal, la angioplastia con balón e implantación de stent ha demostrado que es una técnica segura y efectiva, con éxito técnico y permeabilidad en el seguimiento a mediano plazo en todas las pacientes.

Carlos Fernández-Pereira

2008-01-01

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Tratamiento endovascular del vasospasmo cerebral inducido por hemorragia subaracnoidea aneurismática Endovascular treatment of cerebral vasospasm due to aneurysmal subarachnoid hemorrhage  

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Full Text Available El vasospasmo cerebral es una de las principales causas de morbimortalidad en los pacientes con hemorragia subaracnoidea por rotura de un aneurisma cerebral. Cuando el vasospasmo se hace resistente al tratamiento médico máximo, el tratamiento endovascular es una opción terapéutica para incrementar el flujo sanguíneo cerebral y evitar lesiones isquémicas cerebrales. Los rápidos avances en técnicas endovasculares permiten utilizar la angioplastia transluminal percutánea y la infusión intraarterial de diversos fármacos vasodilatadores para revertir el vasospasmo. En este artículo se revisan las diferentes técnicas endovasculares disponibles y se describen sus mecanismos de acción, técnicas de administración, resultados clínicos y complicaciones.Cerebral vasospasm remains a leading cause of death and disability in patients with aneurysmal subarachnoid hemorrhage. When vasospasm becomes refractory to maximal medical treatment, endovascular therapies may be considered as an option to increase cerebral blood flow to prevent cerebral infarction. Endovascular techniques include transluminal balloon angioplasty and intra-arterial infusion of vasorelaxants. This article reviews the various endovascular techniques for the treatment of cerebral vasospasm and discusses the mechanisms of action, techniques of administration, clinical results, and limitations of these treatment strategies.

Pedro P. Alcázar

2008-11-01

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Tratamiento endovascular del vasospasmo cerebral inducido por hemorragia subaracnoidea aneurismática / Endovascular treatment of cerebral vasospasm due to aneurysmal subarachnoid hemorrhage  

Scientific Electronic Library Online (English)

Full Text Available SciELO Spain | Language: Spanish Abstract in spanish El vasospasmo cerebral es una de las principales causas de morbimortalidad en los pacientes con hemorragia subaracnoidea por rotura de un aneurisma cerebral. Cuando el vasospasmo se hace resistente al tratamiento médico máximo, el tratamiento endovascular es una opción terapéutica para incrementar e [...] l flujo sanguíneo cerebral y evitar lesiones isquémicas cerebrales. Los rápidos avances en técnicas endovasculares permiten utilizar la angioplastia transluminal percutánea y la infusión intraarterial de diversos fármacos vasodilatadores para revertir el vasospasmo. En este artículo se revisan las diferentes técnicas endovasculares disponibles y se describen sus mecanismos de acción, técnicas de administración, resultados clínicos y complicaciones. Abstract in english Cerebral vasospasm remains a leading cause of death and disability in patients with aneurysmal subarachnoid hemorrhage. When vasospasm becomes refractory to maximal medical treatment, endovascular therapies may be considered as an option to increase cerebral blood flow to prevent cerebral infarction [...] . Endovascular techniques include transluminal balloon angioplasty and intra-arterial infusion of vasorelaxants. This article reviews the various endovascular techniques for the treatment of cerebral vasospasm and discusses the mechanisms of action, techniques of administration, clinical results, and limitations of these treatment strategies.

Pedro P., Alcázar; Alejandro, González; Antonio, Romance.

2008-11-01

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Tratamiento endovascular del trauma vascular periférico Endovascular treatment of peripheral vascular trauma  

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Full Text Available El trauma vascular representa un problema de salud pública a nivel nacional e internacional. La epidemia de violencia con mayor uso de armas de alta y baja velocidad en los conflictos militares y a nivel civil urbano, las velocidades más altas en las carreteras y los accidentes laborales, han aumentado la incidencia del trauma vascular. La aparición de procedimientos y tecnologías endovasculares ha ofrecido nuevas alternativas en casos complejos de trauma vascular, como accesos vasculares difíciles, complicaciones tardías y pacientes con enfermedades concomitantes. En este artículo se presenta la experiencia, desde enero de 2010 hasta enero de 2012, con siete pacientes que recibieron tratamiento endovascular y tuvieron seguimiento a seis meses. En 6 (86 % pacientes fue posible la implantación de endoprótesis (stent y en uno fue necesario crear un émbolo en la arteria ilio-lumbar mediante espirales de acero (coils. El tiempo promedio de duración del procedimiento quirúrgico fue de 60,7 minutos, con un rango de 40 a 90 minutos. En todos los casos se comprobó éxito angiográfico y permeabilidad del vaso lesionado.Vascular trauma constitutes a public health problem both nationally and internationally. The epidemy of violence with greater use of high and low velocity weapons in the military conflicts as well as at the civil urban level, have increased the incidence of vascular trauma. The advent of endovascular procedures and technologies offer new alternative approaches in complex vascular trauma, such as those with difficult vascular access, late complications and patients with concomitant complications. Hereby we present our experience with seven patients that were submitted to endovascular treatment in the period January 2010 to January 2012, with six months follow-up. In six patients (86% it was possible to implant a stent, and in one it became necessary to create an embolus in the ilio-lumbar artery by means of a steel spiral coil. Mean operating time was 60.7 minutes, with a rank of 40 to 90 minutes. Successful result was demonstrated in all cases by angiography and permeability of the affected vessel.

César Eduardo Jiménez

2012-12-01

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Tratamiento endovascular del trauma vascular periférico / Endovascular treatment of peripheral vascular trauma  

Scientific Electronic Library Online (English)

Full Text Available SciELO Colombia | Language: Spanish Abstract in spanish El trauma vascular representa un problema de salud pública a nivel nacional e internacional. La epidemia de violencia con mayor uso de armas de alta y baja velocidad en los conflictos militares y a nivel civil urbano, las velocidades más altas en las carreteras y los accidentes laborales, han aument [...] ado la incidencia del trauma vascular. La aparición de procedimientos y tecnologías endovasculares ha ofrecido nuevas alternativas en casos complejos de trauma vascular, como accesos vasculares difíciles, complicaciones tardías y pacientes con enfermedades concomitantes. En este artículo se presenta la experiencia, desde enero de 2010 hasta enero de 2012, con siete pacientes que recibieron tratamiento endovascular y tuvieron seguimiento a seis meses. En 6 (86 %) pacientes fue posible la implantación de endoprótesis (stent) y en uno fue necesario crear un émbolo en la arteria ilio-lumbar mediante espirales de acero (coils). El tiempo promedio de duración del procedimiento quirúrgico fue de 60,7 minutos, con un rango de 40 a 90 minutos. En todos los casos se comprobó éxito angiográfico y permeabilidad del vaso lesionado. Abstract in english Vascular trauma constitutes a public health problem both nationally and internationally. The epidemy of violence with greater use of high and low velocity weapons in the military conflicts as well as at the civil urban level, have increased the incidence of vascular trauma. The advent of endovascula [...] r procedures and technologies offer new alternative approaches in complex vascular trauma, such as those with difficult vascular access, late complications and patients with concomitant complications. Hereby we present our experience with seven patients that were submitted to endovascular treatment in the period January 2010 to January 2012, with six months follow-up. In six patients (86%) it was possible to implant a stent, and in one it became necessary to create an embolus in the ilio-lumbar artery by means of a steel spiral coil. Mean operating time was 60.7 minutes, with a rank of 40 to 90 minutes. Successful result was demonstrated in all cases by angiography and permeability of the affected vessel.

César Eduardo, Jiménez; Diego, Peña.

2012-12-01

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Perioperative management of endovascular abdominal aortic aneurysm repair  

International Nuclear Information System (INIS)

Objective: To summarize the clinical experience of perioperative management in performing endovascular abdominal aortic aneurysm repair (EVAR). Methods: EVAR was performed in 22 patients with abdominal aortic aneurysm. The clinical data were retrospectively analyzed. Before treatment the functions of main organs were evaluated and certain measures were adopted in order to protect them. Useful parameters, including the length, diameter, angle and configuration of the proximal and distal aneurysmal neck, the relationship of the aneurysm to aortic branches, the distance from the lowest renal artery to the bifurcation of abdominal aorta, and the quality of access vessels (such as diameter, tortuosity and calcification degree) were determined and assessed with CTA. According to the parameters thus obtained, the suitable stent-graft with ideal diameter and length was selected, and the optimal surgery pattern was employed. Local anesthesia was employed in 20 patients, among them the local anesthesia had to be changed to general anesthesia in one. Epidural anesthesia was carried out in one patient through the surgically-reconstructed iliac artery access,and general anesthesia was employed in one patient who had Stanford type A aortic dissection. The lowest renal artery must be accurately localized before deployment of stent-graft was started. At least one patent internal iliac artery should be reserved when bilateral internal iliac arteries needed to be covered, to be coveredteries needed to be covered, to be covered by stages or to be reconstructed. After stent-graft placement, angiography must be performed to find out if there was any endoleak and, if any, to determine the type of endoleak and to deal with it properly. Two cases had proximal type I endoleak, so balloon dilation was employed in one and cuff implantation in another one. Distal type I endoleak occurred in one case, but, unfortunately, the iliac artery ruptured when balloon dilation was employed, therefore the patient had to receive vascular repair with prosthesis. Three cases developed type III endoleak. Balloon dilation followed by additional stent-graft placement was adopted in one case. Thoracic endovascular aortic repair with subsequent EVAR was carried out in another patient with Stanford type A aortic dissection. Re-examination with CTA was performed 7-10 days after the treatment, and once a year thereafter. Results: EVAR was successfully completed in all patients. The main complications included thrombosis due to vascular kinking (n=1) and disruption of abdominal incision (n=1). No death due to surgery occurred. During the follow-up period of 6 month to 5 years all patients remained alive. Conclusion: With the advantages of high imaging quality and usefulness for accurate measure of parameters, CTA is the gold standard for preoperative and postoperative evaluation. EVAR is a safe and effective treatment for abdominal aortic aneurysm in aged patients with high-risk. (authors)

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Tratamiento "híbrido" del aneurisma tóraco-abdominal: revascularización visceral extraanatómica e inserción de endoprótesis / Extra anatomical revascularization and endovascular stent-grafting for thoracoabdominal aneurysm repair: Report of four cases  

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Full Text Available SciELO Chile | Language: Spanish Abstract in spanish [...] Abstract in english Surgical treatment of thoracoabdominal aneurysms is a big technical challenge with a high rate of complications and mortality. It requires a large exposure and transient interruption of vital organ perfusion during its repair. Endovascular repair is a less invasive alternative available over the las [...] t decade. We report four male patients aged 44 to 76 years, with thoracic aortic aneurysms and involvement of visceral aorta, treated with a two stage procedure. During the first stage, a retrograde revascularization of the superior mesenteric and renal arteries from the infrarenal aorta was done, associated in two cases to a concomitant repair of an infrarenal aortic aneurysm. In the second stage, an endovascular graft was placed through the femoral artery, from the segment proximal to the aneurysm to the infrarenal aorta, above the origin of the visceral artery reconstructions, excluding the aneurysm from circulation. In one patient, both stages were concomitant and in three the second stage was delayed. One patient presented a postoperative bleeding that required reintervention without adverse consequences. No patient died, presented paraplegia or deterioration of renal function. After follow up of 6 to 20 months, there is no evidence of aneurysm growth or complications derived from the procedure

Renato, Mertens M; Francisco, Valdés E; Albrecht, Krämer Sch; Leopoldo, Mariné M; Michel, Bergoeing R; Rodrigo, Sagües C; Alvaro, Huete G; Jeannette, Vergara G; Magaly, Valdebenito G.

2007-02-01

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Tratamiento "híbrido" del aneurisma tóraco-abdominal: revascularización visceral extraanatómica e inserción de endoprótesis Extra anatomical revascularization and endovascular stent-grafting for thoracoabdominal aneurysm repair: Report of four cases  

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Full Text Available Surgical treatment of thoracoabdominal aneurysms is a big technical challenge with a high rate of complications and mortality. It requires a large exposure and transient interruption of vital organ perfusion during its repair. Endovascular repair is a less invasive alternative available over the last decade. We report four male patients aged 44 to 76 years, with thoracic aortic aneurysms and involvement of visceral aorta, treated with a two stage procedure. During the first stage, a retrograde revascularization of the superior mesenteric and renal arteries from the infrarenal aorta was done, associated in two cases to a concomitant repair of an infrarenal aortic aneurysm. In the second stage, an endovascular graft was placed through the femoral artery, from the segment proximal to the aneurysm to the infrarenal aorta, above the origin of the visceral artery reconstructions, excluding the aneurysm from circulation. In one patient, both stages were concomitant and in three the second stage was delayed. One patient presented a postoperative bleeding that required reintervention without adverse consequences. No patient died, presented paraplegia or deterioration of renal function. After follow up of 6 to 20 months, there is no evidence of aneurysm growth or complications derived from the procedure

Renato Mertens M

2007-02-01

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TRATAMIENTO ENDOVASCULAR DE LOS ANEURISMAS CEREBRALES: SUS COMIENZOS HACE 30 AÑOS Y SU DESARROLLO ACTUAL  

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Full Text Available Breve historia del desarrollo los métodos endovasculares en el tratamiento de los aneurismas intracraneanos, comenzando con las primeras experiencias de Serbinenko en Moscú. Se revisan aspectos técnicos recientemente incorporados al uso clínico y sus resultados.A short history of the development of endovascular treatment of intracraneal aneurysm, beginning with the first experiences of Serbinenko in Moscow. Recent technical aspects and clinical results are reviewed.

José Tevah C.

2003-01-01

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Tratamiento endovascular de los aneurismas toracoabdominales tipo IV / Endovascular Repair of Type IV Thoracoabdominal Aneurysms  

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: Spanish Abstract in spanish Los pacientes con aneurismas toracoabdominales tipo IV se caracterizan anatómicamente por la presencia de una dilatación aórtica visceral que determina la falta de un cuello proximal aórtico adecuado para el anclaje de las endoprótesis convencionales. Para tal fin existen injertos especialmente dise [...] ñados con fenestraciones. En esta comunicación se describe la experiencia de un grupo quirúrgico en la utilización de endoprótesis fenestradas. Fueron tratados seis pacientes. Todas las endoprótesis fueron implantadas con éxito, respetando 20 vasos viscerales. Este abordaje constituye hoy una alternativa válida para el tratamiento de este grupo de pacientes candidatos a cirugía convencional de alto riesgo. Abstract in english Endovascular Repair of Type IV Thoracoabdominal Aneurysms Type IV thoracoabdominal aortic aneurysms are characterized by involvement of the visceral aortic segment which determines the lack of a proximal aortic neck suitable for the implantation conventional stents. Fenestrated stents have been spec [...] ially developed for these cases. We describe the experience of a surgical center using fenestrated stents in six patients. All the stents were successfully implanted, respecting 20 visceral vessels. This approach is a valid alternative for patients who are at high risk for conventional surgery.

Luis M, Ferreira; Sergio, Escordamaglia; José N, Allende; Julio, Rosemberg; Carlos, Ingino; A. Ricardo, La Mura.

2012-10-01

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Tratamiento endovascular de lesiones traumáticas de troncos supra aórticos Endovascular treatment of traumatic supra aortic trunk lesions  

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Full Text Available Introducción: Las lesiones traumáticas de troncos supra aórticos (TSA tienen elevada morbimor-talidad, y su tratamiento presenta un desafío técnico. Las técnicas endovasculares se presentan como una alternativa atractiva y de menor riesgo para su solución efectiva. Objetivos: Evaluar los resultados del tratamiento endovascular de las lesiones de TSA. Material y Método: Se revisaron retrospectivamente todos los pacientes sometidos a tratamiento endovascular de lesiones de TSA. Resultados: Entre Marzo de 2000 y Agosto de 2009 se intervinieron 8 pacientes, 6 hombres, edad promedio 33,6 años. El mecanismo traumático fue contuso en 3 y penetrante en 5. Los vasos afectados fueron arteria subclavia en 5, tronco braquiocefálico en 2 y carótida común en uno. De los pacientes con lesión subclavia, tres presentaron compromiso de plexo braquial asociado. Siete pacientes fueron tratados con implante de endoprótesis y uno mediante embolización. Un paciente requirió un stent no cubierto para tratar el colapso parcial precoz de una endoprótesis. No hubo morbilidad neurológica de novo ni mortalidad operatoria. El seguimiento clínico promedio es 24,3 meses. Dos pacientes se perdieron al seguimiento. La permeabilidad primaria asistida es 100% a 21,9 meses. Conclusiones: El tratamiento endovascular de lesiones de TSA es efectivo, con baja morbimortalidad y con buena permeabilidad a mediano plazo.Introduction: Traumatic lesions of supra aortic trunks (SAT have an elevated morbidity and mortality, and its treatment is technically challenging. Endovascular techniques offer an effective solution with a lower risk, making it an attractive alternative. Objectives: Retrospective review of all the patients with SAT lesions treated with endovascular techniques. Results: Between March 2000 to August 2009, 8 patients were treated, 6 men, mean age 33.6 years. Three patients suffered blunt and 5 a penetrating trauma. The injured vessels were subclavian artery in 5, brachiocephalic trunk in two and common carotid in one. Of the 5 patients with subclavian artery injury, three had associated brachial plexus injury. Six patients were treated with an endo-graft and one with coil-embolization. One patient suffered an early partial collapse of his endograft, requiring an additional bare metal stent to maintain patency. In this series there was neither neurological morbidity nor operative mortality. Follow-up is 24.3 months, and primary assisted patency is 100% at 21.9 months with two patients lost to follow-up. Conclusions: Endovascular treatment of SAT lesions is effective, showing low morbidity and mortality with a good mid-term patency.

MICHEL BERGOEING R

2011-04-01

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Tratamiento endovascular de lesiones traumáticas de troncos supra aórticos / Endovascular treatment of traumatic supra aortic trunk lesions  

Scientific Electronic Library Online (English)

Full Text Available SciELO Chile | Language: Spanish Abstract in spanish Introducción: Las lesiones traumáticas de troncos supra aórticos (TSA) tienen elevada morbimor-talidad, y su tratamiento presenta un desafío técnico. Las técnicas endovasculares se presentan como una alternativa atractiva y de menor riesgo para su solución efectiva. Objetivos: Evaluar los resultados [...] del tratamiento endovascular de las lesiones de TSA. Material y Método: Se revisaron retrospectivamente todos los pacientes sometidos a tratamiento endovascular de lesiones de TSA. Resultados: Entre Marzo de 2000 y Agosto de 2009 se intervinieron 8 pacientes, 6 hombres, edad promedio 33,6 años. El mecanismo traumático fue contuso en 3 y penetrante en 5. Los vasos afectados fueron arteria subclavia en 5, tronco braquiocefálico en 2 y carótida común en uno. De los pacientes con lesión subclavia, tres presentaron compromiso de plexo braquial asociado. Siete pacientes fueron tratados con implante de endoprótesis y uno mediante embolización. Un paciente requirió un stent no cubierto para tratar el colapso parcial precoz de una endoprótesis. No hubo morbilidad neurológica de novo ni mortalidad operatoria. El seguimiento clínico promedio es 24,3 meses. Dos pacientes se perdieron al seguimiento. La permeabilidad primaria asistida es 100% a 21,9 meses. Conclusiones: El tratamiento endovascular de lesiones de TSA es efectivo, con baja morbimortalidad y con buena permeabilidad a mediano plazo. Abstract in english Introduction: Traumatic lesions of supra aortic trunks (SAT) have an elevated morbidity and mortality, and its treatment is technically challenging. Endovascular techniques offer an effective solution with a lower risk, making it an attractive alternative. Objectives: Retrospective review of all the [...] patients with SAT lesions treated with endovascular techniques. Results: Between March 2000 to August 2009, 8 patients were treated, 6 men, mean age 33.6 years. Three patients suffered blunt and 5 a penetrating trauma. The injured vessels were subclavian artery in 5, brachiocephalic trunk in two and common carotid in one. Of the 5 patients with subclavian artery injury, three had associated brachial plexus injury. Six patients were treated with an endo-graft and one with coil-embolization. One patient suffered an early partial collapse of his endograft, requiring an additional bare metal stent to maintain patency. In this series there was neither neurological morbidity nor operative mortality. Follow-up is 24.3 months, and primary assisted patency is 100% at 21.9 months with two patients lost to follow-up. Conclusions: Endovascular treatment of SAT lesions is effective, showing low morbidity and mortality with a good mid-term patency.

MICHEL, BERGOEING R; RENATO, MERTENS M; LEOPOLDO, MARINÉ M; FRANCISCO, VALDÉS E; ALBRECHT, KRÄMER SCH; RICARDO, SONNEBORN G.

2011-04-01

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[Initial experience in endovascular treatment of abdominal aortic aneurysms in Bulgaria].  

Science.gov (United States)

The abdominal aneurysm imposes prominent epidemiological impact due to its high incidence and life threatening complications. The first steps in endovascular treatment of abdominal aneurysms in Bulgaria are herein described. Five bifurcated and one straight stent-grafts were implanted in the ,,St.Ekaterina" University Hospital for the period from February till May 2004. Satisfactory therapeutic result was achieved in all cases. The continuing follow-up of the patients proved favorable tolerability. The good therapeutic response, lack of perioperative mortality, and low complication rate provide evidence that endovascular repair can have beneficial implication in patients with abdominal aneurysms and high operative risk. PMID:18693509

Petrov, I; Chervenkov, V; Nedevska, M; Nikolov, D; Zakhariev, T; Chirkov, A

2005-01-01

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Endovascular Repair of an Anastomotic Leak Following Open Repair of Abdominal Aortic Aneurysm  

International Nuclear Information System (INIS)

This report describes the case of an early postoperative anastomotic leak following elective open repair of an infrarenal abdominal aortic aneurysm which was successfully treated by endovascular stent-grafting. A 71-year-old man underwent open tube graft repair of abdominal aortic aneurysm. Twelve days later he presented with a contained leak from the distal anastomosis, which was confirmed on CT scan. This was successfully treated with a bifurcated aortic stent-graft. This case illustrates the usefulness of the endovascular approach for resolving this rare surgical complication of open repair of abdominal aortic aneurysm and the challenges associated with the deployment of such a device within an aortic tube graft

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Early Outcomes of Open Abdominal Repair Versus Endovascular Repair for Abdominal Aortic Aneurysm: Report from National Hospital Organization Network Study in Japan  

OpenAIRE

Objective: Early outcomes of open abdominal repair (OS) versus endovascular repair (EVAR) for abdominal aortic aneurysm were retrospectively analyzed, after commercialized devices for EVAR had become available in Japan.

Handa, Nobuhiro; Onohara, Toshihiro; Okamoto, Minoru; Yamamoto, Tsuyoshi; Shimoe, Yasushi; Okada, Masahiro; Ishibashi, Yoshimitsu; Yamashita, Masafumi; Takahashi, Toshiki; Kasashima, Fuminori; Kishimoto, Jyunji; Mizuno, Akihiro; Kei, Jyunichi; Nakai, Mikizou; Suhara, Hitoshi

2012-01-01

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Vascular ultrasonography for follow-up of endovascular repair of abdominal aorta aneurysms / Ultrassonografia vascular no seguimento da correção endovascular do aneurisma da aorta abdominal  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Languages: English, Portuguese Abstract in portuguese Contexto As informações sobre o seguimento de pacientes submetidos à correção endovascular de aneurisma de aorta abdominal com ultrassonografia vascular no Brasil são escassas, bem como sua comparação com os resultados obtidos com a angiotomografia. Na medida em que a ultrassonografia é um exame se [...] m riscos, de baixo custo e de grande disponibilidade, esta se torna um método bastante atraente. Na presente pesquisa, procuramos avaliar a sensibilidade e a especificidade da ultrassonografia vascular (USV) no acompanhamento desses pacientes, comparando este método com a angiotomografia. Materiais e métodos Realizamos estudo prospectivo durante o período de junho de 2012 a maio de 2013. Para tanto, examinamos pacientes acompanhados pelo Ambulatório de Cirurgia Endovascular do Hospital Universitário de Londrina pós-correção endovascular de aneurisma de aorta abdominal. Todos os pacientes haviam sido submetidos à angiotomografia para acompanhamento e foram também avaliados através da radiografia abdominal (raio x simples) e da ultrassonografia vascular. Resultados Foram analisados 30 pacientes, com média de idade de 73 anos, com diâmetro médio do aneurisma de 6 cm, detectando-se quatro vazamentos endovasculares. Na avaliação desses vazamentos endovasculares, a ultrassonografia vascular obteve uma sensibilidade de 75% e uma especificidade de 96%, em relação à angiotomografia. Conclusão A ultrassonografia vascular é um excelente método primário na avaliação e no acompanhamento pós-cirúrgico de pacientes submetidos à correção endovascular do aneurisma da aorta abdominal (AAA). No entanto, em caso de alteração ultrassonográfica ou dificuldade na realização do exame, uma investigação mais específica deve ser realizada para confirmação diagnóstica. Abstract in english Background There is little information available on follow-up of abdominal aortic aneurysm patients treated with endovascular repair using vascular ultrasonography in Brazil or on how it compares with the results of angiotomography. Since ultrasonography is an examination that is risk-free, inexpen [...] sive and widely available, it is a very attractive method. In this study we attempted to evaluate the sensitivity and specificity of vascular ultrasonography for follow-up of these patients by comparing the method with angiotomography. Materials and methods We conducted a prospective study from June 2012 to May 2013. We examined patients followed-up at the endovascular surgery clinic run by the University Hospital of Londrina after endovascular repair of abdominal aortic aneurysms. All patients underwent angiotomography for follow-up and were also examined using simple abdominal X-rays and vascular ultrasonography. Results A total of 30 patients were analyzed, with a mean age of 73 years and a mean aneurysm diameter of 6 cm. Four endoleaks were detected. Vascular ultrasonography achieved sensitivity of 75% and specificity of 96% for classification of these endoleaks, in comparison with angiotomography. Conclusions Vascular ultrasonography is an excellent primary method for evaluation and post-surgical follow-up of patients treated with endovascular repair of abdominal aorta aneurysms. However, when ultrasonography detects problems or is difficult to accomplish, it should be supplemented with a more specific investigation for diagnostic confirmation.

Domingos, Moraes Filho; Fernando Barbosa, Trevisan; José Manoel da Silva, Silvestre; Wander Eduardo, Sardinha; Eduardo Durante, Ramires; Silfayner Victor Mathias, Dias; Henrique, Matsuda.

2014-09-01

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Endovascular Abdominal Aortic Aneurysm Repair in the Presence of a Kidney Transplant: Therapeutic Considerations  

International Nuclear Information System (INIS)

Abdominal aortic aneurysm (AAA) repair in the presence of a kidney transplant can be extremely challenging, as it carries significant risks of renal ischemia. Endovascular repair is an attractive option, as it can be performed with little or no impairment of renal arterial flow. We describe the endovascular management of a recurrent AAA in a patient with a functioning renal transplant using a custom-made aorto-uni-iliac device. We discuss the planning and the potential problems of the technique

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Factors affecting anatomical changes after endovascular abdominal aortic aneurysm repair.  

Science.gov (United States)

Background?The primary goal of endovascular aneurysm repair (EVAR) is to prevent death from aneurysm rupture. Regression of aortic sac size is believed to be a marker for success after EVAR. This study analyzes the changes in aneurysm sac size and the factors affecting sac regression after EVAR. Patients and Methods?We retrospectively reviewed 121 patients with abdominal aortic aneurysm (AAA) who underwent elective treatment with EVAR at our institution from January 2005 to December 2011. In this study, 17 of the 121 patients were excluded due to loss during follow-up or for not having undergone a postoperative computed tomographic (CT) scan, and 3 patients were excluded due to an isolated iliac artery aneurysm. CT scans were scheduled at months 1, 6, and 12, and annually thereafter. Aneurysm size was defined by the minor axis on the largest axial cut of the aneurysm on a two-dimensional CT scan. Sac regression was defined as a reduction in the diameter of more than 5 mm. Results?Sac regression was observed during follow-up in 39 of the 101 patients. There was 1 regression in 87 patients (1%) at 1?month, 18 in 62 patients at 6 months (29%), 26 regressions in 44 patients (59%) at 12 months, and 18 regressions in 34 patients (53%) at 24 months. After multivariate analysis, the absence of endoleaks was the only factor associated with sac regression (hazard ratio, 3.620; confidence interval, 1.692-7.747; p?=?0.001). Conclusion?Sac regression over 5 mm is associated with current or previous endoleaks after EVAR. Continued surveillance is necessary in all patients after EVAR to prevent late complications. PMID:25191763

Park, Keun-Myoung; Kim, Dong-Ik; Kim, Young-Wook; Do, Young-Soo; Park, Hong Suk; Park, Kwang Bo

2015-03-01

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Liposucción en el tratamiento de lipodistrofia abdominal  

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Full Text Available La lipodistrofia abdominal altera la estética corporal y para la mayoría ha surgido la posibilidad de resolver esta alteración mediante la liposucción, que desde su aparición ha experimentado múltiples modificaciones. Con el fin de evaluar los resultados de la aplicación de esta técnica en nuestro medio, seleccionamos una muestra de 85 pacientes con el diagnóstico de lipodistrofia abdominal ligera y moderada, a los cuales se les realizó dicha técnica y se evaluaron los resultados obtenidos. Se lograron resultados estéticos satisfactorios en un alto porcentaje de los pacientes (88,2 % pocos fueron los insatisfactorios y ello debido fundamentalmente a complicaciones que aparecieron tardíamente. Los síntomas y signos posoperatorios fueron bien tolerados y desaparecieron antes de los 2 meses. Se concluye en que la liposucción contribuye a perfeccionar la estética corporal, con un mínimo de complicaciones, siempre y cuando se realice una selección adecuada de los pacientes y se aplique correctamente la técnica, evitándose la excesiva aspiración de grasa

José Cairos Báez

1997-08-01

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Tratamiento endovascular del trauma de aorta descendente / Endovascular treatment of descending aorta trauma  

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Full Text Available SciELO Chile | Language: Spanish Abstract in spanish [...] Abstract in english Background: Mortality of traumatic aortic lesions is over 80%. A group of those who survive, develop a chronic pseudo aneurism, usually asymptomatic, that is detected during imaging studies. Since conventional surgical treatment of traumatic aortic lesions has a great mortality, endovascular treatme [...] nt has been used as an alternative treatment in the last decade. Aim: To report our experience with endovascular treatment of traumatic aortic lesions. Patients and methods: Report of seven patients aged 22 to 65 years, with traumatic aortic lesions. Under general anesthesia an endovascular prosthesis was inserted through the femoral artery. Results: No complications were observed in the postoperative period, and after a follow up ranging from 4 to 40 months, no endoleaks or other complications have been detected. Conclusions: Endovascular treatment of traumatic aortic lesions has good immediate and midterm results

Renato, Mertens M; Francisco, Valdés E; Albrecht, Krämer Sch; Michel, Bergoeing R; Ricardo, Zalaquett S; Cristián, Baeza P; Sergio, Morán V; Manuel, Irarrázaval L; Pedro, Becker R; Alvaro, Huete G; Jeannette, Vergara G; Magaly, Valdebenito G.

2005-04-01

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Tratamiento endovascular del trauma de aorta descendente Endovascular treatment of descending aorta trauma  

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Full Text Available Background: Mortality of traumatic aortic lesions is over 80%. A group of those who survive, develop a chronic pseudo aneurism, usually asymptomatic, that is detected during imaging studies. Since conventional surgical treatment of traumatic aortic lesions has a great mortality, endovascular treatment has been used as an alternative treatment in the last decade. Aim: To report our experience with endovascular treatment of traumatic aortic lesions. Patients and methods: Report of seven patients aged 22 to 65 years, with traumatic aortic lesions. Under general anesthesia an endovascular prosthesis was inserted through the femoral artery. Results: No complications were observed in the postoperative period, and after a follow up ranging from 4 to 40 months, no endoleaks or other complications have been detected. Conclusions: Endovascular treatment of traumatic aortic lesions has good immediate and midterm results

Renato Mertens M

2005-04-01

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Alteraciones neuropsicológicas en pacientes con aneurismas cerebrales: tratamiento quirúrgico versus tratamiento endovascular / Neuropsychological impairment in patients with intracranial aneurysms: surgical versus endovascular treatment  

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Full Text Available SciELO Spain | Language: Spanish Abstract in spanish Objetivos. Describir el rendimiento neuropsicológico de pacientes con aneurismas cerebrales que han sido tratados mediante cirugía o embolización, y determinar la existencia de diferencias en función de la modalidad de tratamiento. Material y métodos. Serie clínica compuesta por 93 pacientes volunta [...] rios, con aneurismas cerebrales, tratados mediante cirugía (n = 56) o embolización (n = 37). A ambos grupos se les realizó una evaluación neuropsicológica retrospectiva, al menos un año después de realizar el tratamiento. Resultados. En ambos grupos se encontraron pacientes con déficit neuropsicológicos. En el grupo de pacientes tratados quirúrgicamente el porcentaje de pacientes sin ninguna afectación neuropsicológica es del 35.7%, mientras que en el grupo de pacientes embolizados este porcentaje asciende al 43.2%. Los análisis muestran una ejecución mejor en el grupo de tratamiento endovascular, respecto al quirúrgico, sólo en memoria visual y en el recuerdo con claves de la memoria verbal. Conclusiones. Años después del tratamiento, un importante porcentaje de pacientes presenta alteraciones neuropsicológicas. El tratamiento endovascular se asocia con un mejor rendimiento en memoria visual y en el recuerdo con claves de la memoria verbal, aunque explica un porcentaje muy escaso de la varianza. Por lo tanto, en la explicación del deterioro neuropsicológico parece más importante el propio efecto de la hemorragia que la modalidad de intervención. Abstract in english Objectives. To describe the neuropsychological status of patients with intracranial aneurysms and to compare the cognitive status of patients with intracranial aneurysm treated by surgical or endovascular mehtods. Material and methods. Ninety-three cases with intracranial aneurysms treated with surg [...] ery (n = 56) or embolization (n = 37) were included. A neuropsychological assessment was applied to both groups retrospectively, at least one year after treatment. Results. Neuropsychological impairment was found in both groups. 35.7% of the patients treated with surgery and 43.2%, of those treated with embolization did not show any cognitive impairment. Visual Memory and Cued Recall of verbal information are better in patients treated by embolization. Conclusions. Our results show that a large proportion of patients with intracranial aneurysms have cognitive impairment after treatment. Endovascular management may cause less impairment in visual and verbal memory. However, bleeding may be the most important factor to explain these cognitive impairments.

C., Orozco-Giménez; M.J., Katati; R., Vilar; M., Meersmans; M., Pérez-García; J.M., Martín; P., Alcázar; F., Guerrero; F., Escamilla; A., Mínguez; G., Olivares; E., Saura; A., Jorques; V., Arjona.

2006-02-01

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Reparación endovascular de aneurismas de aorta abdominal (parte I: Epidemiología indicaciones y limitaciones Endovascular repair of abdominal aortic aneurysms (Part I: Epidemiology, indications, and limitations  

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Full Text Available Los aneurismas de la aorta abdominal son una patología frecuente, con alta afinidad hacia la ruptura y muerte. La reparación endovascular es una alternativa al reparo convencional en pacientes de alto riesgo, y el desarrollo tecnológico y el perfeccionamiento de las endoprótesis va a permitir su aplicación en pacientes de buen riesgo para reparo convencional con cirugía abierta. En este artículo se dan las pautas básicas que deben conocer los especialistas en enfermedades cardiovasculares acerca de la epidemiología, indicaciones y limitaciones del reparo endoluminal de los aneurismas de la aorta abdominal.Abdominal aortic aneurysms constitute a frequent pathology, with high propensity to rupture and death; endovascular repair is an alternative to conventional repair in high-risk patients. The technological development and betterment of endoprosthesis will allow the application of this method in patients considered to be of good risk for conventional open repair. This article presents the basic knowledge that should possess the specialists in cardiovascular diseases in regard to epidemiology and indications and limitations of the endoluminal repair of abdominal aortic aneurysms.

Roberto Carlos Fominaya Pardo

2007-06-01

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Reparación endovascular de aneurismas de aorta abdominal (parte I): Epidemiología indicaciones y limitaciones / Endovascular repair of abdominal aortic aneurysms (Part I): Epidemiology, indications, and limitations  

Scientific Electronic Library Online (English)

Full Text Available SciELO Colombia | Language: Spanish Abstract in spanish Los aneurismas de la aorta abdominal son una patología frecuente, con alta afinidad hacia la ruptura y muerte. La reparación endovascular es una alternativa al reparo convencional en pacientes de alto riesgo, y el desarrollo tecnológico y el perfeccionamiento de las endoprótesis va a permitir su apl [...] icación en pacientes de buen riesgo para reparo convencional con cirugía abierta. En este artículo se dan las pautas básicas que deben conocer los especialistas en enfermedades cardiovasculares acerca de la epidemiología, indicaciones y limitaciones del reparo endoluminal de los aneurismas de la aorta abdominal. Abstract in english Abdominal aortic aneurysms constitute a frequent pathology, with high propensity to rupture and death; endovascular repair is an alternative to conventional repair in high-risk patients. The technological development and betterment of endoprosthesis will allow the application of this method in patie [...] nts considered to be of good risk for conventional open repair. This article presents the basic knowledge that should possess the specialists in cardiovascular diseases in regard to epidemiology and indications and limitations of the endoluminal repair of abdominal aortic aneurysms.

Roberto Carlos, Fominaya Pardo; Manuel, Maynar Moliner; Roman, Rostagno.

2007-06-01

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Perioperative nursing for patients receiving endovascular therapy for ruptured abdominal aortic aneurysm  

International Nuclear Information System (INIS)

Objective: To discuss the nursing strategy and practical measures for patients with ruptured abdominal aortic aneurysm during the perioperative period of endovascular intervention. Methods: Endovascular therapy was carried out in 34 patients with ruptured abdominal aortic aneurysm,who were encountered in our department during the period of July 1997 to September 2008. The clinical data were retrospectively analyzed and the nursing points were summarized. Results: The average hospitalization days of the 34 patients were (14 ± 5) days, the mortality rate within 30 days was 23.5% (8/34). No nursing-related complications occurred. Conclusion: A comprehensive understanding of the mechanism, development and clinical evolution of ruptured abdominal aortic aneurysm is very important for nursing care. For nursing staff, well mastering the relevant nursing technique, carefully guarding against any nursing errors and lessening patient's suffering as far as possible, all these are the task of primary importance. (authors)

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Endotension - a cause of failure in endovascular repair of abdominal aortic aneurysms  

International Nuclear Information System (INIS)

The phenomenon of aortic aneurysm enlargement after endovascular repair without detectable endoleak is called 'endotension'. It is caused by persistent pressurization within the excluded aneurysm sac and may cause subsequent rupture of the aneurysm. We undertake a review of current knowledge about causes, significance and treatment of endotension as a failure in endovascular aortic aneurysm repair. The goal of endovascular abdominal aortic aneurysm repair is to prevent aneurysm ruptures by excluding the aneurysms from the aortic circulation. AAA (Abdominal Aortic Aneurysm) after EVAR (Endovascular Aneurysm Repair) can enlarge even in the absence of detectable endoleak because of persistent pressurization within the excluded aneurysm. There are many theories about the mechanism of pressure transmission into the excluded aneurismal sac. Some laboratory and clinical research shows that endotension can be connected with attachment side failure, graft fabrics or aneurysm sac geometry. Pressure transmission by the thrombus, poor outflow, osmotic effect or ultrafiltration are the other possible mechanisms causing this phenomenon. Maximal diameter measurement by CT is considered to be the best management method in patients after EVAR. However, lack of aneurysm sac shrinkage observed in some cases does not mean the presence of endotension. The role of pulsatility inside the excluded aneurysm sac remains unclear. Several possible concepts of endotension treatment have been discts of endotension treatment have been discussed, including both open surgical convention and nonoperative approach. The absence of endoleak after endovascular repair not always means that there is no pressurization within the aneurysm. Success of endovascular repair can be evaluated indirectly by observation of changes in the diameter of the aneurysm sac after EVAR. Thus, it is essential to follow up patients after endovascular repair in order to detect any late complications including endotension

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Infrarenal abdominal aortic aneurysm. Endovascular repair with stent grafts; Infrarenales Bauchaortenaneurysma. Endovaskulaere Stent-Graft-Therapie  

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As an alternative to surgery, endovascular therapy with stent grafts has become the second main treatment option for infrarenal abdominal aortic aneurysms. Unlike surgery, endovascular treatment with stent grafts is also applicable in patients unfit for open repair. Despite current improvements in endovascular repair devices, significant anatomic barriers still exclude this technique for a large number of patients. Computed tomography, magnetic resonance imaging, and ultrasound are essential for diagnostics, preintervention planning, and postintervention follow-up of abdominal aneurysms treated with stent grafts. This review covers etiology, pathology, and diagnostic aspects. Materials and methods for endovascular treatment of abdominal aortic aneurysms are presented in detail, and clinical results and complications are discussed. (orig.) [German] Die endovaskulaere Therapie des infrarenalen Bauchaortenaneurysmas hat sich als Alternative zur offenen chirurgischen Versorgung etabliert. Im Gegensatz zu Letzterer ist die Aneurysmatherapie mittels Stent-Grafts auch bei schwerkranken, nicht operationsfaehigen Patienten moeglich, wobei der Nutzen kontrovers diskutiert wird. Im Gegensatz zur klassischen transabdominellen Operation ist die Stent-Graft-Technik anatomischen Einschraenkungen unterworfen, die aber kuenftig aufgrund bereits abzusehender technischer Weiterentwicklungen eine geringere Rolle spielen werden. Die Diagnostik, die Entscheidung fuer eine endovaskulaere Therapie, die praeinterventionelle Planung und die Nachsorge erfordern den Einsatz bildgebender Verfahren, v. a. der Computer- und Magnetresonanztomographie sowie der Sonographie. Die fuer die endovaskulaere Aneurysmabehandlung relevanten Aspekte der Diagnostik werden dargestellt. Auf die Technik, die Materialien, die Ergebnisse und die Komplikationen der Stent-Graft-Behandlung wird ausfuehrlich eingegangen. (orig.)

Wagner, M.; Voshage, G.; Landwehr, P. [Klinik fuer Diagnostische und Interventionelle Radiologie, Gefaesszentrum Hannover, Diakoniekrankenhaus Henriettenstiftung gGmbH, Hannover (Germany); Busch, T. [Klinik fuer Gefaesschirurgie, Gefaesszentrum Hannover, Diakoniekrankenhaus Henriettenstiftung gGmbH, Hannover (Germany)

2008-09-15

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Tratamento endovascular de aneurisma de aorta abdominal em paciente com rim em ferradura: relato de caso Endovascular treatment of abdominal aortic aneurysm in patient with horseshoe kidney: a case report  

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Full Text Available O rim em ferradura é uma das anomalias urológicas congênitas mais comuns e está presente em cerca de 0,12% dos pacientes com aneurisma de aorta abdominal. O reparo cirúrgico convencional está associado a dificuldades técnicas que provavelmente aumentam a morbidade e a mortalidade, mas que podem ser evitadas com o tratamento endovascular. Relatamos um caso de um paciente de 64 anos com rim em ferradura e aneurisma de aorta abdominal, que foi submetido ao reparo endovascular do aneurisma com sucesso.The horseshoe kidney is one of the most common urologic anomalies and is present in about 0,12% of the patients with abdominal aortic aneurysm. The conventional surgical repair is associated with technical difficulties that probably increase morbidity and mortality, but can be averted by the endovascular treatment. We report a case of a 64-year-old patient with horseshoe kidney and abdominal aortic aneurysm, who underwent endovascular repair with success.

José Manoel da Silva Silvestre

2013-03-01

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Successful Endovascular Repair of Ruptured Abdominal Aortic Aneurysm in a Renal Transplant Recipient  

International Nuclear Information System (INIS)

A renal transplant recipient presented in the early post-transplantation period with rupture of an abdominal aortic aneurysm. The high mortality rate of the surgical repair of ruptured aneurysm in addition to the concern of preserving the renal graft prompted us to seek alternative approaches, such as repairing the aneurysm by means of endovascular techniques. The ruptured aneurysm was confirmed by performing computed tomography and digital angiography and thereafter was successfully repaired by endovascular stenting technique (Talent stent-graft), which seems to be a safe and effective method of preserving a renal graft

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Endovascular repair of infrarenal abdominal aortic aneurysm associated with a horseshoe kidney and graft thrombosis in early follow-up.  

Science.gov (United States)

Endovascular aneurysm repair (EVAR) is a well-established alternative to open surgery. The presented case underwent endovascular therapy of an abdominal aortic aneurysm (AAA) with the anatomical prerequisite of a horseshoe kidney. We describe the technique used, including the embolization of aortic side branches, to avoid endoleaks, and the management of thrombotic complications during follow-up. PMID:19452338

Brechtel, K; Kalender, G; Heller, S; Schmehl, J; Stock, U; Scheule, A M; Claussen, C D; Tepe, G

2009-07-01

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Endovascular repair of abdominal aortic para-anastomotic pseudoaneurysm / Correcao endovascular do pseudoaneurisma para-anastomotico de aorta abdominal  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Languages: English, Portuguese Abstract in portuguese Os aneurismas para-anastomóticos de aorta podem ser verdadeiros ou pseudoaneurismas. Estes últimos tendem a ser assintomáticos até a ruptura. Devem ser tratados cirurgicamente, apesar da alta morbimortalidade em sua abordagem. Este relato descreve o caso de uma paciente do sexo feminino, 68 anos, co [...] m quadro de pseudoaneurisma para-anastomótico pós-aneurismectomia de aorta infrarrenal. Optou-se por correção endovascular, com bons resultados. As técnicas endovasculares vêm se estabelecendo como o método de escolha no tratamento dos pseudoaneurismas anastomóticos. Abstract in english Para-anastomotic aneurysms are either true aneurysms or pseudoaneurysms. The latter tend to be asymptomatic until rupture. Para-anastomotic aneurysms should be approached surgically, despite the high morbidity and mortality associated with their treatment. This report describes the case of a 68-year [...] -old woman who presented with a para-anastomotic pseudoaneurysm secondary to infrarenal aortic aneurysmectomy. We chose to use an endovascular approach, and results were good. Endovascular techniques are increasingly becoming the method of choice in the treatment of anastomotic pseudoaneurysms.

Leonardo Ghizoni, Bez; Francesco Evangelista, Botelho; Julio Cesar Arantes, Maciel; Danilo Martins, Cardinelli.

2013-06-01

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Endovascular repair for thoracic and abdominal aortic ruptures: single center experience  

International Nuclear Information System (INIS)

Full text: Introduction: Abdominal and thoracic aortic rupture is a life-threatening emergency with high mortality rate. Objective: To report our single center experience of endovascular repair of the thoracic and abdominal aortic ruptures Material and methods: Between September 2010 and May 2012, 11 consecutive patients with thoracic and abdominal aortic ruptures underwent endovascular repair in our unit. Thoracoabdominal CT angiography was performed before procedure and after procedure for follow-up. Results: The ages of the patients (9 men, 2 women) were between 26 and 80. Etiologies were ruptured abdominal aortic aneurysm for 5, traumatic rupture of the thoracic aorta for 4, thoracic aortic rupture due to mycotic aneurysm for 1 and iatrogenic thoracic aortic rupture for 1 of the patients. Progressive hemoglobin decrease, hemothorax, para-aortic and retroperitoneal hematomas associated with rupture localization were present in all patients. 30 day mortality was 3; one patient died immediately after the procedure, the others died 1 and 8 days after the procedure. The other 8 patients were followed for 1-19 months after the procedure. Paraplegia developed in the patient with iatrogenic thoracic aortic rupture after the procedure. Conclusion: Reduction in mortality rates due to aortic rupture has been reported with the expanding use of the endovascular repair.

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Correção endovascular do aneurisma da aorta abdominal: análise dos resultados de único centro Endovascular repair of abdominal aortic aneurysm: a single-center results analysis  

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Full Text Available OBJETIVO: Avaliar os resultados clínicos imediatos e em médio prazo do tratamento endovascular em pacientes portadores de aneurisma da aorta abdominal em um centro de referência para doenças cardiovasculares. MATERIAIS E MÉTODOS: Estudo retrospectivo de uma série de pacientes submetidos a tratamento endovascular de aneurisma da aorta abdominal, no período de janeiro de 2009 a julho de 2010. Foram avaliados as características demográficas, o sucesso técnico, o sucesso terapêutico, a morbimortalidade, as complicações e a taxa de reintervenções perioperatórias imediatos, e após um ano de acompanhamento. RESULTADOS: Foram analisados 102 pacientes consecutivos com idade média de 72 ± 9 anos, sendo 79% deles do sexo masculino. Houve sucesso técnico em 97,1% e êxito terapêutico em 81% dos casos. A mortalidade perioperatória foi de 0,9% e a anual, de 7,8%. Foram necessárias reintervenções em 18,8% dos pacientes durante o seguimento. CONCLUSÃO: Em nosso estudo, os resultados obtidos justificam a realização desse procedimento nos pacientes com anatomia adequada.OBJECTIVE: To evaluate immediate and mid-term outcomes in a series of patients submitted to endovascular repair of infrarenal abdominal aortic aneurysm in a reference center for cardiovascular medicine. MATERIALS AND METHODS: The present retrospective study included a series of patients treated in the period from January 2009 to July 2010, and evaluated demographic characteristics, technical success, therapeutic success, morbimortality, immediate complications and perioperative reintervention rate in a one-year follow-up. RESULTS: The authors evaluated 102 consecutive patients with a mean age of 72 ± 9 years (79% were men. Technical success was observed in 97.1% of cases, and therapeutic success, in 81%. Perioperative mortality was 0.9% and one-year mortality rate was 7.8%. Reintervention was necessary in 18.8% of the patients during follow-up. CONCLUSION: The outcomes observed in the present study justify performing such a procedure in patients with suitable anatomy.

Eduardo Rafael Novero

2012-02-01

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Tratamiento endovascular del aneurisma de aorta torácica descendente Endovascular treatment of descending thoracic aorta aneurysms  

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Full Text Available Background: The natural history of aneurysms ends in rupture and death. In 1990 the first endovascular exclusion of an aneurysm, using an endoluminal graft implanted through the femoral arteries was performed. More recently, the same procedure has been used for aneurysms of the thoracic aorta. Aim: To report our experience with endovascular treatment of thoracic aorta aneurysms. Material and methods: Analysis of 14 patients (nine male, aged 30 to 79 years, treated between May 2001 and August 2002. Results: The mean diameter of the aneurysms was 6.9 cm. The etiology was atherosclerotic in nine patients. The Excluder device (Goreâ was preferentially used. There was no operative mortality or paraplegia. One patient had a transient leg monoparesis that reverted completely. No patient had type I endoleaks. Two patients had type II endoleaks on discharge, that sealed spontaneously. In a follow up, ranging from 2 to 17 months, one patient died of a bronchopneumonia and no aneurysm rupture has been detected. Conclusions: The short term results of endoluminal treatment of thoracic aorta aneurysms are excellent. This treatment is less invasive and has less complications than conventional surgery (Rev Méd Chile 2003; 131: 617-22

Renato Mertens M

2003-06-01

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Tratamiento endovascular del aneurisma de aorta torácica descendente / Endovascular treatment of descending thoracic aorta aneurysms  

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Full Text Available SciELO Chile | Language: Spanish Abstract in spanish [...] Abstract in english Background: The natural history of aneurysms ends in rupture and death. In 1990 the first endovascular exclusion of an aneurysm, using an endoluminal graft implanted through the femoral arteries was performed. More recently, the same procedure has been used for aneurysms of the thoracic aorta. Aim: [...] To report our experience with endovascular treatment of thoracic aorta aneurysms. Material and methods: Analysis of 14 patients (nine male), aged 30 to 79 years, treated between May 2001 and August 2002. Results: The mean diameter of the aneurysms was 6.9 cm. The etiology was atherosclerotic in nine patients. The Excluder device (Goreâ) was preferentially used. There was no operative mortality or paraplegia. One patient had a transient leg monoparesis that reverted completely. No patient had type I endoleaks. Two patients had type II endoleaks on discharge, that sealed spontaneously. In a follow up, ranging from 2 to 17 months, one patient died of a bronchopneumonia and no aneurysm rupture has been detected. Conclusions: The short term results of endoluminal treatment of thoracic aorta aneurysms are excellent. This treatment is less invasive and has less complications than conventional surgery (Rev Méd Chile 2003; 131: 617-22)

Renato, Mertens M; Francisco, Valdés E; Albrecht, Krämer Sch; Leopoldo, Mariné M; Manuel, Irarrázaval L; Sergio, Morán V; Ricardo, Zalaquet S; Eitan, Schwartz Y; Jeannette, Vergara G; Magaly, Valdebenito G.

2003-06-01

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Endovascular treatment of abdominal aortic aneurysms in high-surgical-risk patients / Tratamento endovascular de aneurismas da aorta abdominal em pacientes de alto risco cirúrgico  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Languages: English, Portuguese Abstract in portuguese Contexto: Após a publicação de um estudo prospectivo e randomizado (Endovascular Aneurysm Repair Trial 2 - EVAR2) que questionou o benefício do tratamento endovascular de aneurismas da aorta abdominal (AAA) em pacientes de alto risco cirúrgico, decidimos avaliar nossos resultados iniciais e tardios [...] neste grupo de pacientes. Objetivo: Avaliar a mortalidade perioperatória, a sobrevivência tardia, a freqüência das reintervenções, o comportamento dos sacos aneurismáticos, as patências primária e secundária e a incidência de rotura após o tratamento endovascular de AAA em pacientes de alto risco cirúrgico. Métodos: Entre abril de 2002 e fevereiro de 2008, 40 pacientes de alto risco anestésico-cirúrgico portadores de AAA foram submetidos ao implante de endopróteses bifurcadas de aorta e incluídos num registro prospectivo. Os dados a respeito do diagnóstico, risco operatório, tratamento e seguimento foram analisados em todos os pacientes. Resultados: 24 endopróteses Excluder® e 16 Zenith® foram implantadas com sucesso. Trinta pacientes (75%) foram classificados como ASA III e 10 (25%) como ASA IV. O diâmetro médio dos AAA era de 64 mm. A mortalidade perioperatória foi de 2,5%. Dois pacientes necessitaram de reintervenção durante o seguimento médio de 28,5 meses. A taxa de sobrevivência aos 3 anos foi de 95%. Houve quatro endoleaks, um caso de endotensão, e uma oclusão de ramo em uma endoprótese. As patências primária e secundária aos 3 anos foram de 97,5 e 100%, respectivamente. Não houve nenhuma rotura. Conclusões: Nossos resultados iniciais e tardios do tratamento endovascular de AAA em pacientes de alto risco são satisfatórios e parecem justificar a indicação deste tratamento neste grupo de pacientes. Abstract in english Background: Following the publication of a prospective randomized trial (Endovascular Aneurysm Repair Trial 2 - EVAR2) that questioned the benefits of endovascular repair of abdominal aortic aneurysms (AAA) in high-surgical-risk patients, we decided to analyze our initial and long-term results with [...] endovascular AAA repair in this patient population. Objective: To evaluate the operative mortality, long-term survival, frequency of secondary operations, outcome of the aneurysm sac, primary and secondary patency rates, and rupture rate after aortic stent-graft placement in high-surgical-risk patients. Methods: From April 2002 to February 2008, 40 high-surgical and anesthetic risk patients with an AAA managed by a bifurcated aortic endograft were entered in a prospective registry. Data concerning diagnosis, operative risk, treatment and follow-up were analyzed in all patients Results: Twenty-four Excluder® and 16 Zenith® stent-grafts were successfully implanted. Thirty patients (75%) were classed ASA III and 10 (25%) were ASA IV. Mean aneurysm diameter was 64 mm. Operative mortality was 2.5%. Two patients required reintervention during the mean follow-up of 28.5 months. Survival rate at 3 years was 95%. There were four endoleaks, one case of endotension, and one endograft limb occlusion. Primary and secondary patency rates at 3 years were 97.5 and 100%, respectively. There were no ruptures. Conclusions: Initial and long-term results with endovascular treatment of AAA in high-surgical-risk patients were satisfactory, and appear to justify such approach for this patient population.

Célio Teixeira, Mendonça; Ricardo Cesar Rocha, Moreira; Cláudio Augusto de, Carvalho; Bárbara D´Agnoluzzo, Moreira; Janaína, Weingärtner; Alexandre Y., Shiomi.

2009-03-01

56

[Late surgical conversion after endovascular treatment of the abdominal aortic aneurysm].  

Science.gov (United States)

The authors present a case report of long- term follow up of 66-year old male with the abdominal aortic aneurysm treated with aortouniiliac stent-graft implantation in combination with the cross-over femoro-femoral bypass 14 years ago. Various leaks type Ia, IIb and III developed during follow-up. In spite of endovascular treatment of these complications the size of the aneurysmal sac enlarged and the patient was successfully treated by the aortobifemoral bypass. PMID:22324248

Janousek, R; Danek, T; Krajina, A; Lojík, M; Chovanec, V

2011-10-01

57

Evaluation of Texture for Classification of Abdominal Aortic Aneurysm After Endovascular Repair  

OpenAIRE

The use of the endovascular prostheses in abdominal aortic aneurysm has proven to be an effective technique to reduce the pressure and rupture risk of aneurysm. Nevertheless, in a long-term perspective, complications such as leaks inside the aneurysm sac (endoleaks) could appear causing a pressure elevation and increasing the danger of rupture consequently. At present, computed tomographic angiography (CTA) is the most common examination for medical surveillance. However, endoleak complicatio...

Garci?a, Guillermo; Maiora, Josu; Tapia, Arantxa; Blas, Mariano

2011-01-01

58

Increased Fluorodeoxyglucose Uptake Following Endovascular Abdominal Aortic Aneurysm Repair: A Predictor of Endoleak?  

OpenAIRE

The main criterion for abdominal aortic aneurysm (AAA) repair is an AAA diameter ?5.5 cm. However, some AAAs rupture when they are smaller. Size alone may therefore not be a sufficient criterion to determine rupture risk. Fluorodeoxyglucose (FDG) uptake is increased in the presence of inflammation and it was suggested that this may be a better predictor of rupture risk than AAA size. Furthermore, increased FDG uptake following endovascular AAA repair may be an indirect predictor of continuo...

Paraskevas, Kosmas I.; Tzovaras, Alexandros A.; Stathopoulos, Vassilios; Gentimi, Fotini; Mikhailidis, Dimitri P.

2010-01-01

59

Tuberculous aneurysm of the abdominal aorta: endovascular repair using stent grafts in two cases  

International Nuclear Information System (INIS)

Tuberculous aneurysm of the aorta is exceedingly rare. To date, the standard therapy for mycotic aneurysm of the abdominal aorta has been surgery involving in-situ graft placement or extra-anatomic bypass surgery followed by effective anti-tuberculous medication. Only recently has the use of a stent graft in the treatment of tuberculous aortic aneurysm been described in the literature. We report two cases in which a tuberculous aneurysm of the abdominal aorta was successfully repaired using endovascular stent grafts. One case involved is a 42-year-old woman with a large suprarenal abdominal aortic aneurysm and a right psoas abscess, and the other, a 41-year-old man in whom an abdominal aortic aneurysm ruptured during surgical drainage of a psoas abscess. (author)

60

Tuberculous aneurysm of the abdominal aorta: endovascular repair using stent grafts in two cases  

Energy Technology Data Exchange (ETDEWEB)

Tuberculous aneurysm of the aorta is exceedingly rare. To date, the standard therapy for mycotic aneurysm of the abdominal aorta has been surgery involving in-situ graft placement or extra-anatomic bypass surgery followed by effective anti-tuberculous medication. Only recently has the use of a stent graft in the treatment of tuberculous aortic aneurysm been described in the literature. We report two cases in which a tuberculous aneurysm of the abdominal aorta was successfully repaired using endovascular stent grafts. One case involved is a 42-year-old woman with a large suprarenal abdominal aortic aneurysm and a right psoas abscess, and the other, a 41-year-old man in whom an abdominal aortic aneurysm ruptured during surgical drainage of a psoas abscess. (author)

Liu, Wei Chiang; Kwak, Byung Kook; Kim, Kyo Nam [Sung Ae General Hospital, Seoul (Korea, Republic of); And Others

2000-12-01

61

Endovascular management of a penetrating abdominal aortic injury.  

Science.gov (United States)

Penetrating aortic trauma is associated with high mortality rates. We report the case of a 24-year-old man who presented with a self-inflicted abdominal aortic penetration injury, resulting in a pseudoaneurysm. Rather uniquely, he was managed through prophylactic stenting to his abdominal aorta; this case was also rare in that there were remarkably no associated visceral injuries. Stenting was preferred because of risks of an aortic graft in a young man. A 14-mm Atrium Advanta™ stent was deployed, and angiography confirmed adequate exclusion of the pseudoaneurysm. He had no complications at follow-up. PMID:24561212

Ghazala, Christopher G; Green, Barnabas R; Williams, Robin; Wyatt, Michael G

2014-10-01

62

Correção endovascular de aneurisma de aorta abdominal em paciente com rim em ferradura: relato de caso / Endovascular repair of an abdominal aortic aneurysm in patient with horseshoe kidney: a case report  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Languages: English, Portuguese Abstract in portuguese O rim em ferradura é uma anomalia congênita rara que pode causar várias dificuldades técnicas durante a correção convencional de aneurisma de aorta abdominal. Relatamos o caso de uma paciente de 68 anos com rim em ferradura, aneurisma de aorta abdominal sintomático e disfunção renal leve. A paciente [...] foi submetida a correção endovascular, sendo utilizada uma endoprótese bifurcada. O pós-operatório foi livre de complicações. O diagnóstico e a técnica endovascular são discutidos, assim como a literatura revisada. Abstract in english Horseshoe kidney is a rare congenital anomaly that may cause various technical problems during conventional repairs of abdominal aortic aneurysms. We report the case of a 68-year-old woman with a horseshoe kidney, symptomatic abdominal aortic aneurysm and mild renal failure. The patient underwent en [...] dovascular repair using a bifurcated endoprosthesis. The postoperative was uneventful. We describe the diagnosis and the endovascular technique and literature review.

Eduardo Keller, Saadi; Luiz Henrique, Dussin; Leandro de, Moura; Alcides José, Zago.

2008-09-01

63

Tratamiento endovascular de la trombosis aguda por tromboaspiración  

Directory of Open Access Journals (Sweden)

Full Text Available Paciente de 75 años ingreso a unidad coronaria por fibrilación auricular paroxística complicada con ausencia de pulso radial y braquial izquierdo. Se realiza angiografía arterial de miembro superior y se observa oclusión arterial trombótica axilo-humeral. Se intento en forma no exitosa embolectomia,debido a que la imagen trombótica se encuentra distal al nacimiento de la arteria vertebral se realiza angioplastia y tromboaspiración. Post tratamiento inmediato se observa restitución del flujo radial, con recolección de trombos.A 75 years old female patient, who arrived to intensive care with diagnostic of paroxistical atrial fibrillation complicated with loose of radial and humeral pulse. We carried out an angiography of upper left arm and found out axilar thrombotic occlusion. Without success we perform an embolectomy. Due to the image of the thrombus is distal to the growth of the vertebral artery, we execute an angioplasty and tromboaspiration with success. After treatment the patient recovered distal pulse.

A Goldsmit

2004-05-01

64

Tratamiento endovascular de la trombosis aguda por tromboaspiración  

Scientific Electronic Library Online (English)

Full Text Available Paciente de 75 años ingreso a unidad coronaria por fibrilación auricular paroxística complicada con ausencia de pulso radial y braquial izquierdo. Se realiza angiografía arterial de miembro superior y se observa oclusión arterial trombótica axilo-humeral. Se intento en forma no exitosa embolectomia, [...] debido a que la imagen trombótica se encuentra distal al nacimiento de la arteria vertebral se realiza angioplastia y tromboaspiración. Post tratamiento inmediato se observa restitución del flujo radial, con recolección de trombos. Abstract in english A 75 years old female patient, who arrived to intensive care with diagnostic of paroxistical atrial fibrillation complicated with loose of radial and humeral pulse. We carried out an angiography of upper left arm and found out axilar thrombotic occlusion. Without success we perform an embolectomy. D [...] ue to the image of the thrombus is distal to the growth of the vertebral artery, we execute an angioplasty and tromboaspiration with success. After treatment the patient recovered distal pulse.

A, Goldsmit; R, Gómes Marques; C, Deluca; C, Sztejfman; M, Bettiotti.

2004-05-01

65

Endovascular treatment of huge saccular abdominal aortic aneurysm in a young Behcet patient: mid-term result  

Directory of Open Access Journals (Sweden)

Full Text Available Abstract Background Abdominal aortic aneurysm formation is among the arterial complications of Behcet's disease. Weakness and fragility of aortic walls leads to the development of arterial complications like pseudoaneurysms. Case Presentation A case of huge saccular abdominal aortic aneurysm in a young Behcet patient who was successfully treated with endovascular stent graft placement is reported, diagnostic and interventional procedures are discussed, and mid-term follow-up results are presented. Conclusions Endovascular treatment of abdominal aortic aneurysm complications of young Behcet patients who are not suitable for open surgery and need intervention could be an alternative treatment modality even without performing preprocedural angiography.

Turkoz Riza

2002-03-01

66

Aneurisma de aorta torácica por úlcera aterosclerótica penetrante: tratamiento endovascular, híbrido o cirugía. Revisión / Penetrating atherosclerotic ulcer of the thoracic aorta: endovascular treatment, hybrid or surgery. A review  

Scientific Electronic Library Online (English)

Full Text Available SciELO Mexico | Language: Spanish Abstract in spanish Los aneurismas de aorta pueden acompañarse de síndromes aórticos agudos (SAA) que cursan con debilitamiento de la capa media, lo cual condiciona un riesgo de ruptura aórtica, con alta morbilidad y mortalidad. La úlcera penetrante constituye 5% de los SAA y resulta de una progresiva erosión de una pl [...] aca ateromatosa que penetra la lámina elástica interna y permite la formación de un hematoma en la media de la pared aórtica. El tratamiento endovascular es una alternativa al tratamiento quirúrgico en los SAA que ha demostrado una adecuada tasa de éxito; sin embargo, existe en la actualidad otra modalidad que se conoce como tratamiento híbrido (quirúrgico y endovascular) que parece estar dando adecuados resultados. El caso que analizamos a continuación es el de un paciente que tuvo una úlcera penetrante. El hematoma resultante generó un aneurisma contenido con riesgo de ruptura. Además, en este estudio comentaremos las opciones en el tratamiento de estos pacientes. Abstract in english The aortic aneurysm is part of the acute aortic syndromes (AAS). Aortic aneurysms have a weakened tunica media. Acute aneurysm expansion may herald rupture with high morbility and mortality. Five percent of AAS are diagnosed as pentetrating atherosclerotic ulcer which is an ulceration of an atherosc [...] lerotic lesion of the aorta that penetrates the internal elastic lamina and allows hematoma formation within the tunica media of the aortic wall. Endovascular treatment is an alternative to surgery and has provided an adequate rate of successful repair. There is another type of treatment which combines surgery and endovascular repair (the hybrid open-endovascular repair) which provides adequate results. The afford mention case is about a patient with a penetrating atherosclerotic ulcer. The hematoma that results from this ulcer extends and self-contains the aneurysm, with a high risk of rupture. We will also describe the aneurysm treatment options.

Magali, Herrera-Gomar; Marco Antonio, Alcántara-Meléndez; Catalina, Lomelí-Estrada; Celso, Mendoza-González; Carlos Alberto, Aguirre-Molina; José Antonio, Lorenzo-Negrete; Eric, Kimura-Hayama; Martín, Rosas-Peralta; Fause, Attie-Cury.

2009-06-01

67

Endovascular repair of abdominal aortic aneurysms: only a mechanical solution for a biological problem?  

Science.gov (United States)

Endovascular aneurysm repair has matured significantly over the last 20 years and is becoming increasingly popular as a minimally invasive treatment option for patients with abdominal aortic aneurysms (AAA). Long-term durability of this fascinating treatment, however, is in doubt as continuing aneurysmal degeneration of the aortoiliac graft attachment zones is clearly associated with late adverse sequelae. In recent years, our growing understanding of the physiopathology of AAA formation has facilitated scrutiny of various potential drug treatment concepts. In this article we review the mechanical and biological challenges associated with endovascular treatment of infrarenal AAAs and discuss potential approaches to ongoing aneurysmal degeneration, which hampers long-term outcomes of this minimally invasive therapy. PMID:19317573

Diehm, Nicolas; Dick, Florian; Katzen, Barry T; Do, Dai-Do; Baumgartner, Iris

2009-02-01

68

Open and endovascular repair of juxtarenal abdominal aortic aneurysms: a systematic review  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: English Abstract in english This systematic review focuses on the 30-day mortality associated with open surgery and fenestrated endografts for short-necked ([...] erformed, using “juxtarenal abdominal aortic aneurysm” and “treatment” as the main keywords. Among the 110 potentially relevant studies that were initially identified, eight were in accordance with the inclusion criteria in the analysis. Similar outcomes for open and endovascular repair were observed for 30-day mortality. No differences were observed regarding the secondary outcomes (duration of surgery, hospital stay, postoperative renal dysfunction and late mortality), except that the late mortality rate was significantly higher for the patients treated with open repair after a median follow-up of 24 months. Fenestrated endografting is a viable alternative to conventional surgery in juxtarenal abdominal aortic aneurysms with a proximal neck

Sergio Quilici, Belczak; Luiz, Lanziotti; Yuri, Botelho; Ricardo, Aun; Erasmo Simão, da Silva; Pedro, Puech-Leão; Nelson, de Luccia.

2014-09-01

69

Exclusión endovascular de un aneurisma de la aorta abdominal con una endoprótesis fenestrada balón expandible / Endovascular Exclusion of an Abdominal Aortic Aneurysm with a Fenestrated Balloon-Expandable Stent-Graft  

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: Spanish Abstract in spanish La reparación endovascular de los aneurismas de la aorta abdominal (AAA) es una alternativa atractiva a la cirugía convencional. El límite absoluto para el implante de una endoprótesis estándar es la presencia de una o ambas arterias renales emergiendo del saco aneurismático. En estos casos, el empl [...] eo de dispositivos fenestrados con preservación del flujo sanguíneo de dichas arterias puede ser una alternativa terapéutica al tratamiento convencional. El objetivo de esta presentación es comunicar la colocación de una endoprótesis fenestrada balón expandible en un paciente con AAA, monorreno y con un riñón intrapelviano en el que la arteria renal emergía del saco aneurismático. Por vía femoral derecha sobre una guía rígida se ascendió el tronco aórtico de la endoprótesis. A continuación, por la misma vía, se ascendió el módulo de conexión entre el tronco aórtico y la arteria ilíaca común derecha. Un tercer módulo conectó la rama de la fenestración del segundo módulo con la arteria renal. El procedimiento se completó con la oclusión de la arteria ilíaca común izquierda (mediante stent oclusor) y la realización de un bypass femorofemoral. El éxito clínico y de implante alcanzado con este paciente muestra que las endoprótesis fenestradas son una opción en anatomías complejas y nos alienta a continuar trabajando con este tipo de dispositivos. Abstract in english Endovascular repair of abdominal aortic aneurysms (AAA) is an attractive option to conventional surgery. The presence of one or both renal arteries emerging from the aneurysmal sac is the absolute limit for implanting a standard stent-graft. In these cases, the use of fenestrated devices that preser [...] ve blood flow to these arteries might constitute a therapeutic option to conventional treatment. The aim of this case report is to describe the implant of a balloon-expandable stent-graft using a fenestrated device in a patient with an AAA and only one kidney located in the pelvis with a renal artery emerging from the aneurysmal sac. A stiff guide-wire was introduced via the femoral artery and the aortic segment of the stent-graft was advanced. A second segment was introduced to connect the aortic trunk with the right common iliac artery. Finally, a third segment connected the fenestrated branch of the second segment with the renal artery. The procedure ended with the placement of an occluder device in the left common iliac artery and a femorofemoral bypass graft surgery. The clinical success achieved with this patient demonstrates that fenestrated stent-grafts are an option in complex anatomies and encourages us to keep on working with this type of devices.

Hernán G., Bertoni; Germán, Girela; Miguel, Peirano; Jorge H., Leguizamón; Sergio, Ludueña; Héctor, Barone.

2008-10-01

70

Predictors of survival following open and endovascular repair of abdominal aortic aneurysms.  

Science.gov (United States)

Clinical decision making for asymptomatic abdominal aortic aneurysms (AAAs) weighs risk of aneurysm rupture, treatment hazards, and overall survival expectations. AAA diameter is the primary parameter in assessing rupture risk. Perioperative risk assessment has been extensively studied, and in-hospital mortality has been reduced to less than 8% with higher-risk open repair and less than 3% with endovascular repair. The purpose of this report is to determine risk factors that predict 2-year survival following open and endovascular AAA repair. We studied 334 patients enrolled in a multicenter clinical trial evaluating an endovascular graft in comparison to standard open repair of infrarenal AAA. Demographic, medical history, physical examination, laboratory, anatomic, procedural, and standardized risk score system variables were analyzed in a multivariable Cox proportional hazard model. Overall survival was 89% at 2 years. Heart disease, cancer, and stroke were the most common causes of death, and no deaths were due to AAA rupture. Cox modeling demonstrated that there were several independent predictors for death after AAA repair: smaller body mass index (p=0.005), Society for Vascular Surgery pulmonary risk score >or=1 (p=0.005), history of erectile dysfunction (p=0.008), history of heart valve replacement (p=0.008), lower preoperative platelet count (p=0.012), larger ratio of AAA diameter/proximal neck diameter (p=0.020), and lower ankle-brachial index (p=0.031). Age, gender, and open or endovascular treatment group are not significant independent risk factors for 2-year mortality in this study. Clinical, laboratory, and anatomic factors predict survival after open and endovascular repair of AAAs. With progressive reduction of in-hospital mortality, assessment of patient longevity after AAA repair has become a more important factor in clinical decision making. Use of valid predictors of patient survival will optimize resource utilization and improve overall patient outcomes. Better selection of patients for any method of repair may improve overall utility more than choice of open or endovascular techniques. PMID:18774682

Matsumura, Jon S; Katzen, Barry T; Sullivan, Timothy M; Dake, Michael D; Naftel, David C

2009-03-01

71

A Case Report of the Endovascular Treatment of Mycotic Abdominal Aortic Pseudoaneurysms Using a Customized Stent-Graft  

Energy Technology Data Exchange (ETDEWEB)

Abdominal aortic aneurysms located around the major branch of the aorta were treated surgically rather than by endovascular treatment due to the complex anatomy. Recently, the treatment modality evolved towards a customized stent-graft. We report on a case of a mycotic pseudoaneurysm originating in the abdominal aorta at the level of superior mesenteric artery, which was treated with a customized stent-graft.

Jung, Hye Doo; Lim, Jae Hoon; Kim, Jae Kyu [Dept. of Radiology, Chonnam National University Hospital, Gwangju (Korea, Republic of); Jeong, Seo In; Yim, Nam Yeol; Chang, Nam Kyu [Dept. of Radiology, Chonnam National University Hwasun Hospital, Hwasun (Korea, Republic of); Choi, Soo Jin Na [Dept. of Radiology, Chonnam National University Hospital, Gwangju (Korea, Republic of)

2011-09-15

72

Endovascular treatment of huge saccular abdominal aortic aneurysm in a young Behcet patient: mid-term result  

OpenAIRE

Abstract Background Abdominal aortic aneurysm formation is among the arterial complications of Behcet's disease. Weakness and fragility of aortic walls leads to the development of arterial complications like pseudoaneurysms. Case Presentation A case of huge saccular abdominal aortic aneurysm in a young Behcet patient who was successfully treated with endovascular stent graft placement is reported, diagnostic and interventional procedures are discussed, and mid-term follow-up results are prese...

Turkoz Riza; Akbulut Ahmet; Gulcan Oner; Kutlu Ramazan; Baysal Tamer

2002-01-01

73

Unusual perigraft abscess formation associated with stent graft infection after endovascular aortic repair of abdominal aortic aneurysm: A case report  

Energy Technology Data Exchange (ETDEWEB)

Although a stent graft infection after endovascular aortic repair (EVAR) of abdominal aortic aneurysm (AAA) is a rare complication, it carries a high mortality and morbidity rate. We report a rare case of stent graft infection that led to an unusual perigraft abscess formation without any associated aortoenteric fistula two years after the EVAR of AAA.

Lee, Hyo Jin; Kim, Song Soo; Ahn, Moon Sang; Lee, Jae Hwan; Shin, Byung Seok; KIm, Jin Hwan [Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon (Korea, Republic of)

2014-03-15

74

Abdominal aortic aneurysm calcification and thrombus volume are not associated with outcome following endovascular abdominal aortic aneurysm repair  

Energy Technology Data Exchange (ETDEWEB)

Aortic calcification and thrombus have been postulated to worsen outcome following endovascular abdominal aortic aneurysm repair (EVAR). The purpose of this study was to assess the association of abdominal aortic aneurysm (AAA) calcification and thrombus volume with outcome following EVAR using a reproducible, quantifiable computed tomography (CT) assessment protocol. Patients with elective EVAR performed between January 2002 and 2012 at the Townsville Hospital, Mater Private Hospital (Townsville) and Royal Brisbane and Women's Hospital (RBWH) were included if preoperative CTAs were available for analysis. AAA calcification and thrombus volume were measured using a semiautomated workstation protocol. Outcomes were assessed in terms of clinical failure, endoleak (type I, type II) and reintervention. Univariate and multivariate analyses were performed. Median follow-up was 1.7 years and the interquartile range 1.0-3.8 years. One hundred thirty-four patients undergoing elective EVAR were included in the study. Rates of primary clinical success and freedom from reintervention were 82.8 % and 88.9 % at the 24-month follow-up. AAA calcification and thrombus volume were not associated with clinical failure, type I endoleak, type II endoleak or reintervention. AAA calcification and thrombus volume were not associated with poorer outcome after EVAR in this study. (orig.)

Rai, Divyajeet; Velu, Ramesh; Tosenovsky, Patrik; Quigley, Francis [James Cook University, Queensland Research Centre for Peripheral Vascular Disease, School of Medicine and Dentistry, Townsville, Queensland (Australia); The Townsville Hospital, Department of Vascular and Endovascular Surgery, Douglas (Australia); Wisniowski, Brendan; Walker, Philip J. [James Cook University, Queensland Research Centre for Peripheral Vascular Disease, School of Medicine and Dentistry, Townsville, Queensland (Australia); University of Queensland, School of Medicine and Centre for Clinical Research, Department of Vascular Surgery, Royal Brisbane and Women' s Hospital, Herston, QLD (Australia); Bradshaw, Barbara [James Cook University, Queensland Research Centre for Peripheral Vascular Disease, School of Medicine and Dentistry, Townsville, Queensland (Australia); Golledge, Jonathan [James Cook University, Queensland Research Centre for Peripheral Vascular Disease, School of Medicine and Dentistry, Townsville, Queensland (Australia); The Townsville Hospital, Department of Vascular and Endovascular Surgery, Douglas (Australia); University of Queensland, School of Medicine and Centre for Clinical Research, Department of Vascular Surgery, Royal Brisbane and Women' s Hospital, Herston, QLD (Australia)

2014-08-15

75

Abdominal aortic aneurysm calcification and thrombus volume are not associated with outcome following endovascular abdominal aortic aneurysm repair  

International Nuclear Information System (INIS)

Aortic calcification and thrombus have been postulated to worsen outcome following endovascular abdominal aortic aneurysm repair (EVAR). The purpose of this study was to assess the association of abdominal aortic aneurysm (AAA) calcification and thrombus volume with outcome following EVAR using a reproducible, quantifiable computed tomography (CT) assessment protocol. Patients with elective EVAR performed between January 2002 and 2012 at the Townsville Hospital, Mater Private Hospital (Townsville) and Royal Brisbane and Women's Hospital (RBWH) were included if preoperative CTAs were available for analysis. AAA calcification and thrombus volume were measured using a semiautomated workstation protocol. Outcomes were assessed in terms of clinical failure, endoleak (type I, type II) and reintervention. Univariate and multivariate analyses were performed. Median follow-up was 1.7 years and the interquartile range 1.0-3.8 years. One hundred thirty-four patients undergoing elective EVAR were included in the study. Rates of primary clinical success and freedom from reintervention were 82.8 % and 88.9 % at the 24-month follow-up. AAA calcification and thrombus volume were not associated with clinical failure, type I endoleak, type II endoleak or reintervention. AAA calcification and thrombus volume were not associated with poorer outcome after EVAR in this study. (orig.)

76

Endovascular Management of Ruptured Abdominal Aortic Aneurysms: An 8-year Single-Centre Experience  

International Nuclear Information System (INIS)

We aimed to review our experience with the endovascular treatment of ruptured abdominal aortic aneurysm (RAAA). During an 8-year period, 69 patients with a RAAA presented to our department; 67 underwent assessment by computed axial tomography, and 2 died on arrival before any evaluation was possible. A total of 42 patients (63%) were suitable for stent-grafting, and all but 1 (c-arm failure) proceeded to endovascular repair. Of these, 27 underwent surgery with local anaesthesia; 3 did so under general anaesthesia; and a further 11 procedures were commenced with the patient under local anaesthesia and then converted to general anaesthesia. A total of 28 bifurcated and 14 aorto-uni-iliac stent-grafts were implanted. Aortic occlusion balloons were used in 2 (5%) patients. The in-hospital and the 30-day mortality rates were 36% and 41%, respectively. After surgery, 21 complications were encountered in 17 patients. Two patients required reintervention during their hospital stay (1 type I endoleak and 1 limb occlusion). During the follow-up (median 730 days [range 90 to 580 days]), the 1-year and 5-year cumulative survival probabilities were 53% (SE 7.9%) and 50% (SE 8.0%), respectively. Three reinterventions were necessary during follow-up (2 type I endoleaks and 1 graft occlusion). We conclude that endovascular treatment is feasible in the emergency setting, and the early experience is promising. Whether such an approach is superior to open surgery remains to be determineor to open surgery remains to be determined.

77

[Endovascular management of an infectious and ruptured abdominal aortic aneurysm. Clinical report].  

Science.gov (United States)

Infectious aneurysms are about 1-3% of all aneurysms of the infrarenal aorta. Its treatment is challenging and the best strategy is far from consensual. The authors report a case of a HIV + patient with multiple other co-morbidities, which was seen in the emergency department with fever and left back pain. These symptoms would prove to be in relation to a ruptured infectious aneurysm of the abdominal aorta. Facing this situation it was decided to select an endovascular technique with implantation of an aorto uni - iliac stent graft with a right-left femoro-femoral cross-over using a 8 mm PTFE graft and exclusion of the left common iliac . The patient didn't have any complication from the situation or the procedure, but died 18 months postoperatively because of a pneumonia caused by Pneumocystis jiroveci. Although it is not the ideal solution for the treatment of infectious elective aneurysms, we believe that endovascular treatment seems to be a viable option and should be taken into account in a subgroup of patients that for their co-morbidities are not good candidates for conventional surgery and for those in rupture, either as a bridge or as a final solution. PMID:25596398

Amorim, Pedro; Sousa, Gonçalo; Vieira, João; C E Sousa, Lourenço; Ribeiro, Karla; Sobrinho, Gonçalo; Vieira, Teresa; Meireles, Nuno; Albino, Pereira

2015-01-01

78

Endovascular stent graft repair of abdominal aortic aneurysms: Current status and future directions  

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Full Text Available Endovascular stent graft repair of abdominal aortic aneurysm (AAA has undergone rapid developments since it was introduced in the early 1990s. Two main types of aortic stent grafts have been developed and are currently being used in clinical practice to deal with patients with complicated or unsuitable aneurysm necks, namely, suprarenal and fenestrated stent grafts. Helical computed tomography angiography has been widely recognized as the method of choice for both pre-operative planning and post-operative follow-up of endovascular repair (EVAR. In addition to 2D axial images, a number of 2D and 3D reconstructions are generated to provide additional information about imaging of the stent grafts in relation to the aortic aneurysm diameter and extent, encroachment of stent wires to the renal artery ostium and position of the fenestrated vessel stents. The purpose of this article is to provide an overview of applications of EVAR of AAA and diagnostic applications of 2D and 3D image visualizations in the assessment of treatment outcomes of EVAR. Interference of stent wires with renal blood flow from the hemodynamic point of view will also be discussed, and future directions explored.

Zhonghua Sun

2009-12-01

79

Percutaneous Treatment of Sac Rupture in Abdominal Aortic Aneurysms Previously Excluded with Endovascular Repair (EVAR)  

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The purpose of this study was to assess the feasibility and effectiveness of percutaneous endovascular repair of ruptured abdominal aortic aneurysms (AAAs) previously treated by EVAR. In the last year, two male patients with AAAs, treated 8 and 23 months ago with bifurcated stent-graft, were observed because of lumbar pain and hemorragic shock. Multidetector computed tomography (MDCT) showed a retroperitoneal hematoma; in both cases a type III endoleak was detected, in one case associated with a type II endoleak from the iliolumbar artery. The procedures were performed in the theater, in emergency. Type II endoleak was treated with transcatheter superselective glue injection; type III endoleaks were excluded by a stent-graft extension. The procedures were successful in both patients, with immediate hemodynamic stabilization. MDCT after the procedure showed complete exclusion of the aneurysms. In conclusion, endovascular treatment is a safe and feasible option for the treatment of ruptured AAAs previously treated by EVAR; this approach allows avoidance of surgical conversion, which is technical very challenging, with a high morbidity and mortality rate.

80

Endovascular Repair of Abdominal Aortic Aneurysms: Vascular Anatomy, Device Selection, Procedure, and Procedure-specific Complications.  

Science.gov (United States)

Abdominal aortic aneurysm (AAA) is abnormal dilatation of the aorta, carrying a substantial risk of rupture and thereby marked risk of death. Open repair of AAA involves lengthy surgery time, anesthesia, and substantial recovery time. Endovascular aneurysm repair (EVAR) provides a safer option for patients with advanced age and pulmonary, cardiac, and renal dysfunction. Successful endovascular repair of AAA depends on correct selection of patients (on the basis of their vascular anatomy), choice of the correct endoprosthesis, and familiarity with the technique and procedure-specific complications. The type of aneurysm is defined by its location with respect to the renal arteries, whether it is a true or false aneurysm, and whether the common iliac arteries are involved. Vascular anatomy can be divided more technically into aortic neck, aortic aneurysm, pelvic perfusion, and iliac morphology, with grades of difficulty with respect to EVAR, aortic neck morphology being the most common factor to affect EVAR appropriateness. When choosing among the devices available on the market, one must consider the patient's vascular anatomy and choose between devices that provide suprarenal fixation versus those that provide infrarenal fixation. A successful technique can be divided into preprocedural imaging, ancillary procedures before AAA stent-graft placement, the procedure itself, postprocedural medical therapy, and postprocedural imaging surveillance. Imaging surveillance is important in assessing complications such as limb thrombosis, endoleaks, graft migration, enlargement of the aneurysm sac, and rupture. Last, one must consider the issue of radiation safety with regard to EVAR. (©)RSNA, 2015. PMID:25763741

Bryce, Yolanda; Rogoff, Philip; Romanelli, Donald; Reichle, Ralph

2015-01-01

81

Doses to patients and staff from endovascular treatment of abdominal aortic aneurysms - Preliminary results  

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Patient radiation doses received during endovascular treatment of abdominal aortic aneurysms (AAA) can be significant and give rise to both deterministic and stochastic effects. Recording of dose-area product (DAP), fluoroscopy time and number of exposures together with calculations of effective dose, were performed for 8 patients. In addition, the entrance surface dose was measured for 3 of the patients. Typically, DAPs of 340 Gycm2, fluoroscopy times of 30 minutes and 310 exposures were obtained together with maximum entrance surface doses of 1,8 Gy and effective doses of 50 mSv. Finger doses to the staff performing the procedure were in the order of a few hundred ?Sv. Conversion factors (effective dose/DAP) and (maximum entrance surface does/DAP) of 0,61·10-2 Gy/Gycm2 and 0,15 mSv/Gycm2 were obtained, respectively. (author)

82

Penetrating Atherosclerotic Ulcer of the Abdominal Aorta Involving the Celiac Trunk Origin and Superior Mesenteric Artery Occlusion: Endovascular Treatment  

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We describe a case of endovascular treatment in a 64-year-old woman affected by a penetrating atherosclerotic ulcer (PAU) of the abdominal aorta with a 26-mm pseudoaneurysm involving the celiac trunk (CT) origin and with superior mesenteric artery (SMA) occlusion in the first 30 mm. The patient underwent stenting to treat the SMA occlusion and subsequent deployment of a custom-designed fenestrated endovascular stent-graft to treat the PAU involving the CT origin. Follow-up at 6 months after device placement demonstrated no complications, and there was complete thrombosis of the PAU and patency of the two branch vessels.

83

Evaluation of texture for classification of abdominal aortic aneurysm after endovascular repair.  

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The use of the endovascular prostheses in abdominal aortic aneurysm has proven to be an effective technique to reduce the pressure and rupture risk of aneurysm. Nevertheless, in a long-term perspective, complications such as leaks inside the aneurysm sac (endoleaks) could appear causing a pressure elevation and increasing the danger of rupture consequently. At present, computed tomographic angiography (CTA) is the most common examination for medical surveillance. However, endoleak complications cannot always be detected by visual inspection on CTA scans. The investigation on new techniques to detect endoleaks and analyse their effects on treatment evolution is of great importance for endovascular aneurysm repair (EVAR) technique. The purpose of this work was to evaluate the capability of texture features obtained from the aneurysmatic thrombus CT images to discriminate different types of evolutions caused by endoleaks. The regions of interest (ROIs) from patients with different post-EVAR evolution were extracted by experienced radiologists. Three techniques were applied to each ROI to obtain texture parameters, namely the grey level co-occurrence matrix (GLCM), the grey level run length matrix (GLRLM) and the grey level difference method (GLDM). The results showed that GLCM, GLRLM and GLDM features presented a good discrimination ability to differentiate between favourable or unfavourable evolutions. GLCM was the most efficient in terms of classification accuracy (93.41%?±?0.024) followed by GLRLM (90.17%?±?0.077) and finally by GLDM (81.98%?±?0.045). According to the results, we can consider texture analysis as complementary information to classified abdominal aneurysm evolution after EVAR. PMID:21901536

García, Guillermo; Maiora, Josu; Tapia, Arantxa; De Blas, Mariano

2012-06-01

84

Tratamento endovascular de aneurisma de aorta abdominal em paciente com rim em ferradura: relato de caso / Endovascular treatment of abdominal aortic aneurysm in patient with horseshoe kidney: a case report  

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Full Text Available SciELO Brazil | Languages: English, Portuguese Abstract in portuguese O rim em ferradura é uma das anomalias urológicas congênitas mais comuns e está presente em cerca de 0,12% dos pacientes com aneurisma de aorta abdominal. O reparo cirúrgico convencional está associado a dificuldades técnicas que provavelmente aumentam a morbidade e a mortalidade, mas que podem ser [...] evitadas com o tratamento endovascular. Relatamos um caso de um paciente de 64 anos com rim em ferradura e aneurisma de aorta abdominal, que foi submetido ao reparo endovascular do aneurisma com sucesso. Abstract in english The horseshoe kidney is one of the most common urologic anomalies and is present in about 0,12% of the patients with abdominal aortic aneurysm. The conventional surgical repair is associated with technical difficulties that probably increase morbidity and mortality, but can be averted by the endovas [...] cular treatment. We report a case of a 64-year-old patient with horseshoe kidney and abdominal aortic aneurysm, who underwent endovascular repair with success.

José Manoel da Silva, Silvestre; Gustavo Teixeira Fulton, Schimit; Wander Eduardo, Sardinha; Guilherme da Silva, Silvestre; Guilon Otávio Santos, Tenório; Fernando Barbosa, Trevisan.

2013-03-01

85

Tratamiento endovascular de 473 aneurismas intracraneanos: resultados angiográficos y clínicos Experiencia colombiana, 1996-2008 / Endovascular coil occlusion of 473 intracranial aneurysms: angiographic and clinical results  

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Full Text Available SciELO Colombia | Language: Spanish Abstract in spanish Introducción. La terapia endovascular es una técnica aceptada mundialmente para el tratamiento de aneurismas cerebrales rotos y no rotos. En nuestro medio no hay grandes series publicadas que permitan comprobar la reproducibilidad del método según el grado de oclusión y la morbimortalidad de la técn [...] ica. Objetivo. Evaluar los resultados angiográficos y clínicos de la oclusión endovascular de 473 aneurismas intracraneanos tratados durante un período de 12 años. Materiales y métodos. Se realizó un estudio retrospectivo en 376 pacientes con 473 aneurismas intracraneanos tratados por terapia endovascular entre los años 1996 y 2008. Se analizaron las imágenes angiográficas antes del procedimiento y después de él y se registró el estado clínico al momento de ser dado de alta, según la escala de coma de Glasgow. Se evalúo la morbimortalidad asociada con la técnica y los resultados angiográficos inmediatos. Resultados. La factibilidad técnica del procedimiento fue de 96,8%. Según la escala de Hunt y Hess, al momento de la admisión, 8,7% de los pacientes estaban en el grado I, 35,7% en el grado II, 19,2% en el grado III y 7,8% en los grados IV o V. El 28,5% de los pacientes tenían aneurismas no rotos. Los resultados angiográficos inmediatos demostraron oclusión total en 69,6%, presencia de cuello remanente en 17,5% y oclusión parcial o fallida en 16,1% de los pacientes con “embolización”. La mortalidad global fue de 10,4%, con una mortalidad del procedimiento de 1,5%. Se presentaron complicaciones asociadas con la técnica en 7,6% de los aneurismas tratados. Conclusión. El tratamiento endovascular de los aneurismas intracraneanos se asoció con una baja morbimortalidad y una gran factibilidad técnica. Los resultados fueron similares a diversas series publicadas en la literatura mundial, respaldando la reproducibilidad del método en nuestro medio. Abstract in english Introduction. Endovascular therapy is a technique accepted throughout the world for the treatment of ruptured and non-ruptured intracranial aneurysms. In Colombia, however, no summary data have been published that validate the method in terms of occlusion grade and morbimortality. Objective. The cli [...] nical and angiographic outcomes were evaluated for endovascular embolization of 473 intracranial aneurysms treated during a 12 year time interval. Materials and methods. Between 1996-2008, 473 intracranial aneurysms treated by an endovascular approach were included in the current retrospective study. Pre and postprocedural angiographic images were analyzed, and clinical outcome was recorded according to the Glasgow coma scale. Immediate angiographic results and morbimortality were evaluated. Results. The technical feasibility of the procedure was 96.8%. According to Hunt and Hess scale, 8.7% patients were classified as grade I, 35.7% grade II, 19.2% grade III and 7.8% grades IV/V. Non-ruptured aneurysms had occurred in 28.5% of patients. Immediate procedural angiography demonstrated total occlusion in 69.6%, neck remnant in 17.5% and partial or failed occlusion in 16.1%. Global mortality was 10.4% and procedural mortality was 1.5%. Technique-associated complications presented in 7.6% of treated aneurysms. Conclusion. Endovascular treatment of intracranial aneurysms was associated with low morbimortality and high technical feasibility. The results are comparable with other published data summaries and supporting the use of the method in Colombia.

Sergio Alberto, Vargas; Diego Alberto, Herrera; José William, Cornejo.

2010-12-01

86

Endovascular coil occlusion of 473 intracranial aneurysms: angiographic and clinical results Tratamiento endovascular de 473 aneurismas intracraneanos: resultados angiográficos y clínicos. Experiencia colombiana, 1996-2008  

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Full Text Available Introduction. Endovascular therapy is a technique accepted throughout the world for the treatment of ruptured and non-ruptured intracranial aneurysms. In Colombia, however, no summary data have been published that validate the method in terms of occlusion grade and morbimortality.
Objective. The clinical and angiographic outcomes were evaluated for endovascular embolization of 473 intracranial aneurysms treated during a 12 year time interval.
Materials and methods. Between 1996-2008, 473 intracranial aneurysms treated by an endovascular approach were included in the current retrospective study. Pre and postprocedural angiographic images were analyzed, and clinical outcome was recorded according to the Glasgow coma scale. Immediate angiographic results and morbimortality were evaluated.
Results. The technical feasibility of the procedure was 96.8%. According to Hunt and Hess scale, 8.7% patients were classified as grade I, 35.7% grade II, 19.2% grade III and 7.8% grades IV/V. Non-ruptured aneurysms had occurred in 28.5% of patients. Immediate procedural angiography demonstrated total occlusion in 69.6%, neck remnant in 17.5% and partial or failed occlusion in 16.1%. Global mortality was 10.4% and procedural mortality was 1.5%. Technique-associated complications presented in 7.6% of treated aneurysms.
Conclusion. Endovascular treatment of intracranial aneurysms was associated with low morbimortality and high technical feasibility. The results are comparable with other published data summaries and supporting the use of the method in Colombia.
Introducción. La terapia endovascular es una técnica aceptada mundialmente para el tratamiento de aneurismas cerebrales rotos y no rotos. En nuestro medio no hay grandes series publicadas que permitan comprobar la reproducibilidad del método según el grado de oclusión y la morbimortalidad de la técnica.
Objetivo. Evaluar los resultados angiográficos y clínicos de la oclusión endovascular de 473 aneurismas intracraneanos tratados durante un período de 12 años.
Materiales y métodos. Se realizó un estudio retrospectivo en 376 pacientes con 473 aneurismas intracraneanos tratados por terapia endovascular entre los años 1996 y 2008. Se analizaron las imágenes angiográficas antes del procedimiento y después de él y se registró el estado clínico al momento de ser dado de alta, según la escala de coma de Glasgow. Se evalúo la morbimortalidad asociada con la técnica y los resultados angiográficos inmediatos.
Resultados. La factibilidad técnica del procedimiento fue de 96,8%. Según la escala de Hunt y Hess, al momento de la admisión, 8,7% de los pacientes estaban en el grado I, 35,7% en el grado II, 19,2% en el grado III y 7,8% en los grados IV o V. El 28,5% de los pacientes tenían aneurismas no rotos. Los resultados angiográficos inmediatos demostraron oclusión total en 69,6%, presencia de cuello remanente en 17,5% y oclusión parcial o fallida en 16,1% de los pacientes con "embolización". La mortalidad global fue de 10,4%, con una mortalidad del procedimiento de 1,5%. Se presentaron complicaciones asociadas con la técnica en 7,6% de los aneurismas tratados.
Conclusión. El tratamiento endovascular de los aneurismas intracraneanos se asoció con una baja morbimortalidad y una gran factibilidad técnica. Los resultados fueron similares a diversas series publicadas en la literatura mundial, respaldando la reproducibilidad del método en nuestro medio.

Diego Alberto Herrera

2011-03-01

87

Endovascular Repair for Abdominal Aortic Aneurysm Reduces Postoperative Blood Endotoxin Levels Assayed by the EAA Method Compared with Open Abdominal Surgery  

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Full Text Available Introduction: We hypothesized to demonstrate whether there are significant differences in blood endotoxin (Et levels after abdominal aortic surgery between endovascular aortic repair (EVAR and open abdominal surgery. Methods: The patients who underwent the surgical treatment for abdominal aortic aneurysm were divided into two groups according to the procedures: open abdomen surgery (OP and EVAR (SG. The value of Endotoxin Activity Assay (EAA was compared between groups. Results: After surgery, Et level was significantly higher in the OP group than in the SG group on postoperative day 3. Neutrophil count was significantly higher in the OP group immediately after treatment, but no significant difference was seen thereafter. There were no differences between the groups in other inflammatory markers. Conclusions: This study indicated that EVAR was less invasive compared to an open abdominal surgery from the standpoint of assessing postoperative endotoxin activity (EA levels measured by EAA.

Atsumi Ohishi

2014-06-01

88

Costs and outcomes of endovascular treatment of thrombosed dialysis autogenous fistulae / Costos y resultados del tratamiento endovascular de las trombosis en las fístulas autólogas para hemodiálisis  

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Full Text Available SciELO Spain | Language: English Abstract in spanish El acceso vascular funcional es un requisito previo para el tratamiento renal sustitutivo en pacientes con enfermedad renal crónica. Las fístulas autólogas se consideran superiores a las prótesis vasculares y los catéteres venosos centrales; sin embargo, las fístulas no están exentas de problemas. L [...] as trombosis de la fístula autóloga se han convertido en un reto en la práctica clínica de nefrología, con importantes implicaciones clínicas para pacientes en diálisis. Varios estudios han informado sobre la viabilidad y la tasa relativamente alta del éxito clínico del abordaje endovascular de fístulas trombosadas en los últimos años. Sin embargo, como las repetidas intervenciones suelen ser necesarias para lograr la supervivencia a largo plazo del acceso, el mantenimiento de una fístula anteriormente trombosada podría ser una política muy cara. Los objetivos de este artículo son proporcionar al lector una idea de los múltiples enfoques endovasculares para fístulas autólogas trombosadas, teniendo en cuenta su eficacia clínica y las implicaciones financieras. Abstract in english Functional vascular access is a prerequisite for adequate haemodialysis treatment in patients with end-stage renal disease. Autogenous arteriovenous fistulae are considered superior to synthetic grafts and central venous catheters; however, fistulae are not without problems. Fistulae thrombosis has [...] become a clinical challenge in nephrology practice, with relevant clinical implications for dialysis patients. Several studies have reported on the feasibility and relatively high-clinical success rate of the endovascular approach to thrombosed fistulae in recent years. However, as repeated interventions are usually required to achieve long-term access survival, maintenance of a previously thrombosed fistulae could be a highly expensive policy. The goals of this article are to provide the reader an insight into the multiple endovascular approaches for thrombosed arteriovenous fistulae, bearing in mind its clinical effectiveness and financial implications.

Luis, Coentrao.

89

Outcomes and Prognostic Factors of Endovascular Abdominal Aortic Aneurysm Repair in Patients with Hostile Neck Anatomy  

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To evaluate the outcomes and find the prognostic factors of endovascular abdominal aortic aneurysm repair (EVAR) in patients with hostile neck anatomy of the abdominal aorta. This study was performed on 100 patients with abdominal aneurysm who were treated with EVAR between March 2006 and December 2010. We divided the patients into two groups: good neck anatomy (GNA), and hostile neck anatomy (HNA) and then compared the primary success rate and the incidence rate of complications with EVAR between the two groups. Our aim was to determine the factors related to the complications of EVAR among HNA types. There were no significant differences of primary success rate and incidence rate of complications between the two groups. Among the types of HNA, the short neck angle [odd ratio (OR), 4.23; 95% confidence interval (CI), 1.21-18.70; p = 0.023] and large neck angle (OR, 2.58; 95% CI, 0.15-11.85; p = 0.031) showed a low primary success rate. The short neck angle (OR, 2.32; 95% CI, 1.18-12.29; p = 0.002) and large neck angle (OR, 4.67; 95% CI, 0.14-19.07; p = 0.032) showed a high incidence rate of early type 1 complication. In the case of the large neck angle (OR, 3.78; 95% CI, 0.96-20.80; p = 0.047), the large neck thrombus (OR, 2.23; 95% CI, 0.24-7.12; p = 0.035) and large neck calcification (OR, 2.50; 95% CI, 0.08-18.37; p 0.043) showed a high incidence rate of complications within a year. The results suggest that patients with hostile neck anatomy can be treated with EVAR successfully, although there was a higher incidence of complications in patients with a short neck length, severe neck angulation, circumferential thrombosis, and calcified proximal neck.

Jung, Hye Doo; Lee, Yun Young; Lee, Seung Jin; Yim, Nam Yeol; Kim, Jae Kyu; Choi, Soo Jin Na; Jung, Sang Young [Chonnam National University Hospital, Gwangju (Korea, Republic of); Chang, Nam Kyu [Dept. of Radiology, St. Carollo Hospital, Suncheon (Korea, Republic of); Lim, Jae Hoon [Dept. of Radiology, Donggunsan Hospital, Gunsan (Korea, Republic of)

2012-09-15

90

Outcomes and Prognostic Factors of Endovascular Abdominal Aortic Aneurysm Repair in Patients with Hostile Neck Anatomy  

International Nuclear Information System (INIS)

To evaluate the outcomes and find the prognostic factors of endovascular abdominal aortic aneurysm repair (EVAR) in patients with hostile neck anatomy of the abdominal aorta. This study was performed on 100 patients with abdominal aneurysm who were treated with EVAR between March 2006 and December 2010. We divided the patients into two groups: good neck anatomy (GNA), and hostile neck anatomy (HNA) and then compared the primary success rate and the incidence rate of complications with EVAR between the two groups. Our aim was to determine the factors related to the complications of EVAR among HNA types. There were no significant differences of primary success rate and incidence rate of complications between the two groups. Among the types of HNA, the short neck angle [odd ratio (OR), 4.23; 95% confidence interval (CI), 1.21-18.70; p = 0.023] and large neck angle (OR, 2.58; 95% CI, 0.15-11.85; p = 0.031) showed a low primary success rate. The short neck angle (OR, 2.32; 95% CI, 1.18-12.29; p = 0.002) and large neck angle (OR, 4.67; 95% CI, 0.14-19.07; p = 0.032) showed a high incidence rate of early type 1 complication. In the case of the large neck angle (OR, 3.78; 95% CI, 0.96-20.80; p = 0.047), the large neck thrombus (OR, 2.23; 95% CI, 0.24-7.12; p = 0.035) and large neck calcification (OR, 2.50; 95% CI, 0.08-18.37; p 0.043) showed a high incidence rate of complications within a year. The results suggest that patients with hostile neck anatomy can be treated with EVostile neck anatomy can be treated with EVAR successfully, although there was a higher incidence of complications in patients with a short neck length, severe neck angulation, circumferential thrombosis, and calcified proximal neck.

91

Tratamiento endovascular y trombólisis intraarterial en el ictus isquémico agudo Endovascular treatment and intra-arterial thrombolysis in acute ischemic stroke  

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Full Text Available Objetivo: Analizar la eficacia y la seguridad de la trombólisis intraarterial y el tratamiento endovascular en pacientes con ictus isquémico agudo. Diseño y ámbito: Estudio prospectivo observacional en una unidad de cuidados intensivos. Pacientes: Dieciséis pacientes recibieron tratamiento endovascular. Se recogieron datos epidemiológicos, localización de la oclusión arterial, tiempo desde el ictus al tratamiento, indicación del tratamiento, National Institutes of Health Stroke Scale al ingreso y al alta hospitalaria, y complicaciones y evolución funcional por escala de Rankin modificada realizada mediante una encuesta telefónica. Resultados: Diez varones, con una edad media de 59 años (29-74 y una estancia media en la unidad de cuidados intensivos de 6 días (1-33. Siete pacientes requirieron ventilación mecánica. Indicación del tratamiento: 4 casos por fracaso de la trombólisis intravenosa, 5 por oclusión de gran vaso, 2 por estar fuera de la ventana terapéutica, 3 por oclusión de la circulación posterior, uno por estar fuera de la ventana terapéutica y tener, además, una oclusión de gran vaso y uno por contraindicación para la trombólisis intravenosa. Localización de la oclusión: 3 en la circulación posterior y 13 en el territorio carotídeo y sus ramas. El fibrinolítico utilizado fue uroquinasa en dosis de 100.000-600.000 UI. Cuatro pacientes requirieron embolectomía mecánica y 10, implantación de stent. Se obtuvo recanalización completa en 11 pacientes (69% y parcial en 4 (25%. Tres pacientes evolucionaron a muerte encefálica. Seis pacientes (46% tuvieron una buena recuperación (escala de Rankin modificada 10 -tiempo de evolución de 3-6h-, y contraindicacio'n para la trombólisis intravenosa y la oclusión arterial proximal.Objective: Analysis of the safety and efficacy of intra-arterial thrombolysis therapy and endovascular treatment in acute ischemic stroke. Design and area: An observational prospective study in the Intensive Care Unit. Patients and methods: 16 patients had endovascular treatment. Epidemiological data, arterial occlusion site, time between stroke onset and treatment, treatment indication, NIHSS scale at admission and discharge from hospital, complications and functional outcome measured by modified Rankin scale (obtained by telephone survey were collected. Results: Ten male patients with a mean age of 59 years (29-74 were included. The mean stay in the ICU was 6 days (1-33. Seven patients required mechanical ventilation. Treatment indications were: intravenous thrombolysis failure in 4 patients, major vessel occlusion in 5, outside of the therapeutic window in 2, posterior circulation occlusion in 3, outside of the therapeutic window plus major vessel occlusion in 1 and intravenous thrombolysis contraindication in 1. The occlusion site was on posterior circulation in 3 and on carotid territories and branches in 13. Thrombolytic treatment used was Urokinase at a dose of 100,000-600,000IU. Four patients required mechanical embolectomy and 10 stent implantation. Complete recanalization was observed in 11 (69% and partial in 4 (25%. Three evolved to brain death. Six patients (46% had a favorable outcome (modified Rankin scale score 10, evolution time between 3-6h, intravenous thrombolysis contraindication and proximal arterial occlusion.

D. Escudero

2010-09-01

92

Endovascular Treatment of Infrarenal Abdominal Aortic Lesions With or Without Common Iliac Artery Involvement  

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To evaluate the results of stent placement for obstructive atherosclerotic aortic disease with or without involvement of the common iliac artery. Forty patients had self-expanding stents primarily or after balloon dilatation in the abdominal aorta between January 2005 and May 2011. All patients had trouble walking. Follow-up examinations were performed with clinical visits; these included color Doppler ultrasonography and computed tomographic angiography. Technical, clinical, and hemodynamic success was achieved in all patients. None of the patients underwent reintervention during the follow-up period, which ranged from 3 months to 6 years (median 24 months). Nine complications occurred in six patients. Of the nine complications, four were distal thromboembolisms, which were successfully treated with catheter-directed thrombolysis or anticoagulation therapy. Endovascular treatment of the obstructive aortic disease using self-expanding stents was safe and effective, with high technical success and long-term patency. Thromboembolic complications were high even though direct stenting was considered protective for thromboembolism formation. Particularly for infrarenal aortic stenosis, it can be recommended as the first-line treatment option for patients with obstructive atherosclerotic aortic disease.

93

Comparison of costs of endovascular repair versus open surgical repair for abdominal aortic aneurysm in Korea.  

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This study was designed to compare the hospital-related costs of elective abdominal aortic aneurysm (AAA) treatment and cost structure between endovascular aneurysm repair (EVAR) and open surgical repair (OSR) in Korean health care system. One hundred five primary elective AAA repairs (79 OSRs and 26 EVARs) performed in the Seoul National University Hospital from 2005 to 2009 were included. Patient characteristics were similar between two groups except for older age (P = 0.004) and more frequent history of malignancy (P = 0.031) in EVAR group. Thirty-day mortality rate was similar between two groups and there was no AAA-related mortality in both groups for 5 yr after repair. The total in-hospital costs for the index admission were significantly higher in EVAR patients (mean, KRW19,857,119) than OSR patients (mean KRW12,395,507) (P < 0.001). The reimbursement was also significantly higher in EVAR patients than OSR patients (mean, KRW14,071,081 vs KRW6,238,895, P < 0.001) while patients payments was comparable between two groups. EVAR patients showed higher follow-up cost up to 2 yr due to more frequent imaging studies and reinterventions for type II endoleaks (15.4%). In the perspective of cost-effectiveness, this study suggests that the determination of which method to be used in AAA treatment be more finely trimmed and be individualized. PMID:22468106

Min, Sang Il; Min, Seung-Kee; Ahn, Sanghyun; Kim, Suh Min; Park, Daedo; Park, Taejin; Chung, Jin Wook; Park, Jae Hyung; Ha, Jongwon; Kim, Sang Joon; Jung, In Mok

2012-04-01

94

Antiplatelet treatment and prothrombotic diathesis following endovascular abdominal aortic aneurysm repair.  

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Prothrombotic diathesis expressed by elevated levels of coagulation-specific biomarkers has been reported in patients with abdominal aortic aneurysm (AAA) and after AAA endovascular repair (EVAR). This study investigates the effect of antiplatelet agents (APLs) on the prothrombotic diathesis in the post-EVAR period. Forty elective EVAR patients had thrombin-antithrombin complex, d-dimer, fibrinopeptide A, and high-sensitivity C-reactive protein measured before, at 24 hours, 1 month, and 6 months after EVAR. Patients receiving APLs postoperatively were compared with those not receiving APLs. All biomarkers were above the normal limits preoperatively and increased significantly 24 hours postoperatively followed by a drop at 1 and 6 months. No statistically significant changes were noted among patients receiving APLs in comparison with those not receiving APLs. The preoperative and postoperative prothrombotic diathesis of AAA following EVAR was confirmed in line with other reports. There was however no significant alteration of the examined biomarkers in patients receiving APLs. PMID:24101707

Trellopoulos, G; Georgiadis, G S; Nikolopoulos, E S; Kapoulas, K C; Georgakarakos, E I; Lazarides, M K

2014-10-01

95

Tratamiento endovascular de la aorta torácica descendente: Resultados a mediano plazo / Endovascular Treatment of the Descending Thoracic Aorta: Mid-Term Results  

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Full Text Available Objetivo El propósito de esta publicación es comunicar nuestros resultados inmediatos y a mediano plazo del tratamiento endovascular de la aorta torácica descendente mediante implante de endoprótesis. Material y métodos Entre agosto de 1999 y agosto de 2006, 74 pacientes consecutivos, 53 hombres y 2 [...] 1 mujeres, fueron tratados por vía endovascular con implante de una prótesis autoexpandible. La edad media fue de 60 ± 14,8 años. Las indicaciones para tratamiento fueron disección aguda (n = 8); 11%, disección crónica (n = 31); 42%, hematoma intramural (n = 5); 7%, aneurisma verdadero (n = 17); 23%, úlcera penetrante (n = 4); 5% y seudoaneurisma traumático (n = 9); 12%. Resultados El implante del dispositivo fue exitoso en 73 (98,6%) pacientes; no se requirió conversión quirúrgica en ninguno de ellos. Ningún paciente presentó paraplejía o déficit neurológico. La mortalidad a los 30 días fue del 8,1% (n = 6). La mediana de seguimiento fue de 33,5 meses (rango 1-79) y la sobrevida global fue del 84% (IC 69-92%) y del 91% (IC 77-97%), según se incluyese o no la mortalidad temprana. El 93% (IC 84-97%) de los pacientes estaban libres de complicaciones relacionadas con el procedimiento. La mayoría de las complicaciones ocurrieron durante el primer año de seguimiento. Conclusiones El tratamiento endovascular de la aorta torácica descendente con implante de endoprótesis autoexpandible es factible y seguro. La baja incidencia de eventos en relación con las series quirúrgicas publicadas hace que este procedimiento sea de elección en pacientes seleccionados. Abstract in english Objective The purpose of this paper is to assess and report our immediate and mid-term results with the endoluminal treatment of aneurysmal disease of the descending thoracic aorta, using an endoprosthesis or stent-graft. Material and Methods From August 1999 to August 2006, 74 consecutive patients [...] (53 men and 21 women) were treated with an endovascular self-expanding stent-graft. Their mean age was 60 ± 14.8 years. Indications for treatment were: acute dissection in 8 patients (11%), chronic dissection in 31 patients (42%), intramural hematoma in 5 patients (7%), true aneurysm in 17 patients (23%), penetrating ulcer in 4 patients (5%) and posttraumatic pseudoaneurysm in 9 patients (12%). Results The implant of the device was successful in 73 patients (98.6%); no patient required surgical conversion. There were no cases of paraplegia or neurological deficit. Thirty-day mortality was 8.1% (n = 6). Median follow-up time was 33.5 months (range: 1-79 months) and overall survival was 84% (CI: 69-92%) and 91% (CI: 77-97%), according to whether early mortality was included or not. Ninetythree percent of patients (CI: 84-97%) were free from procedure- related complications. Most complications occurred during the first year of follow-up. Conclusions Endovascular treatment of the descending thoracic aorta with self-expanding stent-grafts is feasible and safe. Based on the low incidence of events reported in the surgical series published, we believe this is the procedure of choice in selected patients.

Hernán G., Bertoni; Mario P., Fava; Germán A., Girella; Cristian, Zgrablich; Pablo, Ruda Vega; Gustavo A., Salvo; Fabián A., Azzari; Gustavo, Andersen; Adrián, Charask; Jorge H., Leguizamón.

2007-04-01

96

Estudo comparativo entre tratamento endovascular e cirurgia convencional na correção eletiva de aneurisma de aorta abdominal: revisão bibliográfica Endovascular elective treatment of the abdominal aortic aneurysm versus conventional open repair: a comparative study  

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Full Text Available O tratamento eletivo do aneurisma de aorta abdominal é recomendado pela alta morbiletalidade decorrente da eventual ruptura. O objetivo deste trabalho foi comparar o reparo endovascular eletivo com a cirurgia aberta e avaliar as mortalidades hospitalar e perioperatória, em 1 ano, por todas as causas e relacionadas ao aneurisma, a permanência hospitalar, as complicações, as taxas de sobrevida, conversão e reintervenção, a durabilidade do enxerto, o custo-benefício e a relação desses dados com o treinamento da equipe médica responsável pelo tratamento. Realizou-se uma revisão da literatura sobre reparo endovascular versus cirurgia convencional. Foram observados vantagem na sobrevivência perioperatória e menor estresse pós-cirúrgico; no entanto, os benefícios iniciais são perdidos por complicações e reintervenções tardias. Trabalhos baseados nas primeiras gerações de endopróteses superestimam as taxas de mortalidade em curto prazo, complicações e reintervenções. A durabilidade do enxerto, a real vantagem na sobrevida e o custo-benefício são incertos, e outros estudos são necessários para o seguimento em longo prazo.The elective treatment of the abdominal aortic aneurysm is recommended due to the high morbidity and mortality of a possible rupture. The objective of this study was to compare the elective endovascular aneurysm repair with open repair and to analyze the in-hospital and perioperative mortality rate during 1 year related to all causes and to the aneurysm, as well as the postoperative length of hospital stay, complications, survival rates, conversion and reintervention, graft durability, cost-benefit ratio, and relation with the medical team’s experience. A review of the scientific literature about endovascular versus open repair was carried out. We found a higher rate of perioperative survival and less postoperative stress; nevertheless, the initial benefits were lost due to late complications and reinterventions. First-generation endografts overestimated the early results of mortality rates, complications, and reinterventions. Endograft durability, real advantage of survival rates, and cost-benefits are uncertain and further long-term follow-up studies are necessary.

Ana Carolina P. Simão

2009-12-01

97

Reparación endovascular de Aneurisma aórtico abdominal: Estudio piloto de endoprótesis Ovation™. Resultados comparativos / Endovascular repair of abdominal aortic aneurysm: comparative results of a pilot study using the Ovation™ prosthesis  

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Full Text Available SciELO Chile | Language: Spanish Abstract in spanish Introducción: Las endoprótesis actuales para tratar aneurismas aórticos (AAA) requieren introductores de alto diámetro (18-25F) y se sustentan excluyendo el aneurisma, mediante la fuerza radial de stents metálicos. Objetivo: prótesis Ovation™ (TriVascular, EEUU) con aquellas disponibles en el mercad [...] o. Material y Método: Entre Noviembre 2009 y Agosto 2010 tratamos 47 AAA. En 10 pacientes usamos Ovation™ (Grupo 1). Grupo Control (2): diez pacientes tratados contemporáneamente con endoprótesis comerciales. Ovation™ es tri-modular, de PTFE y nitinol con un stent barbado para fijación supra-renal. Sella bajo las arterias renales mediante 2 anillos llenados con un polímero durante el implante. Usa introductor 13-15F. Usa-Philips-Allura (Best, Holanda). Comparamos: duración del procedimiento, hospitalización y complicaciones. Utilizamos test de Fisher exacto y t de student no pareado. Resultados: Éxito técnico 100%. Sin diferencia entre grupos (edad, sexo, tamaño AAA, riesgo ASA, laboratorio preoperatorio). Tiempo operatorio (hrs): 2,12 ± 0,7 vs. 2,0 ± 0,6 (NS). Estadía postoperatoria (hrs): 44,5 ± 10,7 vs 49,5 ± 32,0 (NS). El cuello del AAA y la permanencia en UTI fueron más cortos en grupo 1 (p= 0,035 y 0,0451). Seguimiento (4,5-12 meses) sin eventos adversos, endofugas tipo I ni III, ni re-intervenciones. Conclusiones: Los resultados con Ovation™ a corto plazo son comparables con los de otras endoprótesis, cumpliendo con estándares de eficacia y seguridad. Ovation ™ navega por vasos pequeños, permite un despliegue preciso y sellado efectivo en cuellos > 7 mm, ampliando el tratamiento endovascular del AAA. Abstract in english Background. Current endografts used in treatment of abdominal aortic aneurysm (AAA), use large (18-25F) delivery systems. Graft fixation and aneurysm sealing is obtained by a proximal stent, requiring an aortic neck >15 mm. Objective. To compare the efficacy and safety of Ovation™ endograft (TriVasc [...] ular, USA) with standard endografts. Methods. Between November 2009 and August 2010 we treated 47 AAA. In 10 patients we used Ovation™ (Group 1). Ten patients treated during the same period with commercially available endografts were used as controls (Group (2). The Ovation™ endo-prosthesis is tri-modular, made of PTFE andnitinol with low profile (13-15F) and has a barbed suprarenal stent for fixation. Sealing is obtained independently through 2 inflatable rings filled with a biocompatible polymer during the procedure. Implantation followed the standard procedure through femoral exposure, using the Philips Allura imaging equipment (Best, Netherlands). Procedure duration, length of stay (LOS) and complications were compared between groups. Fisher exact test and unpaired Student’s t test were used for comparisons. Results. Results. Technical success was 100%. We observed no difference between groups (age, sex, AAA size, ASA risk, preoperative lab work). Procedure time (hrs) was 2,12 ± 0,7 vs. 2,0 ± 0,6 (NS), LOS (hrs) was 44,5 ± 10,7 vs. 49,5 ± 32,0 (NS) in Groups 1 and 2, respectively. Aneurysm neck length and ICU stay were shorter in Group 1 (p= 0,035 and 0,0451 respectively). During a 12 month follow up no adverse events, type I or III endoleak, or secondary interventions have occurred. Conclusion. Results with Ovation™ are comparable to other endografts currently available, achieving the same standards of efficacy and safety. Its highly flexible delivery system allows navigation through small vessels, easy deployment and effective sealing of AAA with necks > 7 mm, broadening the span of patients suitable for endovascular treatment.

Francisco, Valdés; Renato, Mertens; Michel, Bergoeing; Leopoldo, Mariné; Albrecht, Krämer; Francisco, Vargas; Guillermo, Lema; Roberto, Canessa; Jeanette, Vergara.

98

Reparación endovascular de Aneurisma aórtico abdominal: Estudio piloto de endoprótesis Ovation™. Resultados comparativos Endovascular repair of abdominal aortic aneurysm: comparative results of a pilot study using the Ovation™ prosthesis  

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Full Text Available Introducción: Las endoprótesis actuales para tratar aneurismas aórticos (AAA requieren introductores de alto diámetro (18-25F y se sustentan excluyendo el aneurisma, mediante la fuerza radial de stents metálicos. Objetivo: prótesis Ovation™ (TriVascular, EEUU con aquellas disponibles en el mercado. Material y Método: Entre Noviembre 2009 y Agosto 2010 tratamos 47 AAA. En 10 pacientes usamos Ovation™ (Grupo 1. Grupo Control (2: diez pacientes tratados contemporáneamente con endoprótesis comerciales. Ovation™ es tri-modular, de PTFE y nitinol con un stent barbado para fijación supra-renal. Sella bajo las arterias renales mediante 2 anillos llenados con un polímero durante el implante. Usa introductor 13-15F. Usa-Philips-Allura (Best, Holanda. Comparamos: duración del procedimiento, hospitalización y complicaciones. Utilizamos test de Fisher exacto y t de student no pareado. Resultados: Éxito técnico 100%. Sin diferencia entre grupos (edad, sexo, tamaño AAA, riesgo ASA, laboratorio preoperatorio. Tiempo operatorio (hrs: 2,12 ± 0,7 vs. 2,0 ± 0,6 (NS. Estadía postoperatoria (hrs: 44,5 ± 10,7 vs 49,5 ± 32,0 (NS. El cuello del AAA y la permanencia en UTI fueron más cortos en grupo 1 (p= 0,035 y 0,0451. Seguimiento (4,5-12 meses sin eventos adversos, endofugas tipo I ni III, ni re-intervenciones. Conclusiones: Los resultados con Ovation™ a corto plazo son comparables con los de otras endoprótesis, cumpliendo con estándares de eficacia y seguridad. Ovation ™ navega por vasos pequeños, permite un despliegue preciso y sellado efectivo en cuellos > 7 mm, ampliando el tratamiento endovascular del AAA.Background. Current endografts used in treatment of abdominal aortic aneurysm (AAA, use large (18-25F delivery systems. Graft fixation and aneurysm sealing is obtained by a proximal stent, requiring an aortic neck >15 mm. Objective. To compare the efficacy and safety of Ovation™ endograft (TriVascular, USA with standard endografts. Methods. Between November 2009 and August 2010 we treated 47 AAA. In 10 patients we used Ovation™ (Group 1. Ten patients treated during the same period with commercially available endografts were used as controls (Group (2. The Ovation™ endo-prosthesis is tri-modular, made of PTFE andnitinol with low profile (13-15F and has a barbed suprarenal stent for fixation. Sealing is obtained independently through 2 inflatable rings filled with a biocompatible polymer during the procedure. Implantation followed the standard procedure through femoral exposure, using the Philips Allura imaging equipment (Best, Netherlands. Procedure duration, length of stay (LOS and complications were compared between groups. Fisher exact test and unpaired Student’s t test were used for comparisons. Results. Results. Technical success was 100%. We observed no difference between groups (age, sex, AAA size, ASA risk, preoperative lab work. Procedure time (hrs was 2,12 ± 0,7 vs. 2,0 ± 0,6 (NS, LOS (hrs was 44,5 ± 10,7 vs. 49,5 ± 32,0 (NS in Groups 1 and 2, respectively. Aneurysm neck length and ICU stay were shorter in Group 1 (p= 0,035 and 0,0451 respectively. During a 12 month follow up no adverse events, type I or III endoleak, or secondary interventions have occurred. Conclusion. Results with Ovation™ are comparable to other endografts currently available, achieving the same standards of efficacy and safety. Its highly flexible delivery system allows navigation through small vessels, easy deployment and effective sealing of AAA with necks > 7 mm, broadening the span of patients suitable for endovascular treatment.

Francisco Valdés

2011-01-01

99

Tratamiento endovascular y trombólisis intraarterial en el ictus isquémico agudo / Endovascular treatment and intra-arterial thrombolysis in acute ischemic stroke  

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Full Text Available SciELO Spain | Language: Spanish Abstract in spanish Objetivo: Analizar la eficacia y la seguridad de la trombólisis intraarterial y el tratamiento endovascular en pacientes con ictus isquémico agudo. Diseño y ámbito: Estudio prospectivo observacional en una unidad de cuidados intensivos. Pacientes: Dieciséis pacientes recibieron tratamiento endovascu [...] lar. Se recogieron datos epidemiológicos, localización de la oclusión arterial, tiempo desde el ictus al tratamiento, indicación del tratamiento, National Institutes of Health Stroke Scale al ingreso y al alta hospitalaria, y complicaciones y evolución funcional por escala de Rankin modificada realizada mediante una encuesta telefónica. Resultados: Diez varones, con una edad media de 59 años (29-74) y una estancia media en la unidad de cuidados intensivos de 6 días (1-33). Siete pacientes requirieron ventilación mecánica. Indicación del tratamiento: 4 casos por fracaso de la trombólisis intravenosa, 5 por oclusión de gran vaso, 2 por estar fuera de la ventana terapéutica, 3 por oclusión de la circulación posterior, uno por estar fuera de la ventana terapéutica y tener, además, una oclusión de gran vaso y uno por contraindicación para la trombólisis intravenosa. Localización de la oclusión: 3 en la circulación posterior y 13 en el territorio carotídeo y sus ramas. El fibrinolítico utilizado fue uroquinasa en dosis de 100.000-600.000 UI. Cuatro pacientes requirieron embolectomía mecánica y 10, implantación de stent. Se obtuvo recanalización completa en 11 pacientes (69%) y parcial en 4 (25%). Tres pacientes evolucionaron a muerte encefálica. Seis pacientes (46%) tuvieron una buena recuperación (escala de Rankin modificada 10) -tiempo de evolución de 3-6h-, y contraindicacio'n para la trombólisis intravenosa y la oclusión arterial proximal. Abstract in english Objective: Analysis of the safety and efficacy of intra-arterial thrombolysis therapy and endovascular treatment in acute ischemic stroke. Design and area: An observational prospective study in the Intensive Care Unit. Patients and methods: 16 patients had endovascular treatment. Epidemiological dat [...] a, arterial occlusion site, time between stroke onset and treatment, treatment indication, NIHSS scale at admission and discharge from hospital, complications and functional outcome measured by modified Rankin scale (obtained by telephone survey) were collected. Results: Ten male patients with a mean age of 59 years (29-74) were included. The mean stay in the ICU was 6 days (1-33). Seven patients required mechanical ventilation. Treatment indications were: intravenous thrombolysis failure in 4 patients, major vessel occlusion in 5, outside of the therapeutic window in 2, posterior circulation occlusion in 3, outside of the therapeutic window plus major vessel occlusion in 1 and intravenous thrombolysis contraindication in 1. The occlusion site was on posterior circulation in 3 and on carotid territories and branches in 13. Thrombolytic treatment used was Urokinase at a dose of 100,000-600,000IU. Four patients required mechanical embolectomy and 10 stent implantation. Complete recanalization was observed in 11 (69%) and partial in 4 (25%). Three evolved to brain death. Six patients (46%) had a favorable outcome (modified Rankin scale score 10), evolution time between 3-6h, intravenous thrombolysis contraindication and proximal arterial occlusion.

D., Escudero; R., Molina; L., Viña; P., Rodríguez; L., Marqués; E., Fernández; L., Forcelledo; J., Otero; F., Taboada; P., Vega; E., Murias; A., Gil.

2010-09-01

100

Avaliação pós-operatória do tratamento endovascular de aneurismas da aorta abdominal por angiotomografia com multidetectores Post-operative evaluation of endovascularly treated abdominal aortic aneurysms by multidetector computed tomography angiography  

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Full Text Available OBJETIVO: Este estudo tem como objetivo a avaliação pós-operatória do tratamento endovascular de aneurismas da aorta abdominal por angiotomografia com multidetectores. MATERIAIS E MÉTODOS: Foram analisadas, retrospectivamente, angiotomografias de 166 pacientes (137 homens e 29 mulheres com idade média de 73 anos portadores de aneurisma da aorta abdominal submetidos a terapêutica endovascular, no período de junho de 2005 a agosto de 2006. Os exames foram feitos em tomógrafo multidetector de 64 canais e os parâmetros adotados foram: colimação, 0,625 mm; pitch, 0,6-1; mAs, 300-400; kV, 120. Em todos os casos foi utilizado meio de contraste iodado não-iônico (350 mg/ml administrado por meio de bomba infusora, com fluxo de 4 ml/s a 5 ml/s e com volume variável de 70 ml a 100 ml. Os exames foram avaliados quanto à presença de complicações. RESULTADOS: Dos 166 exames realizados, 93 pacientes não apresentaram complicações e 73 apresentaram os seguintes achados: endoleak (n=37, trombose circunferencial da endoprótese (n=29, angulação (n=17, coleção no sítio de punção (n=10, migração da prótese (n=7, dissecção dos vasos de acesso (n=7 e oclusão (n=6. CONCLUSÃO: O endoleak foi a complicação mais prevalente em nosso estudo, sendo o tipo II o mais comum.OBJECTIVE: The present study was aimed at evaluating endovascularly treated abdominal aortic aneurysms by multidetector computed tomography angiography. MATERIALS AND METHODS: Multidetector computed tomography angiography studies of 166 patients were retrospectively analyzed. The sample included 137 men and 29 women with mean age of 73 years who had undergone endovascular treatment for abdominal aortic aneurysm in the period between June 2005 and August 2006. Images were acquired in a 64-channel multidetector tomograph adopting the following parameters: 0.625 mm collimation, pitch 0.6-1, 300-400 mAs, and 120 kV. A nonionic iodinated contrast agent (350 mg/ml was injected by infusion pump at a rate of 4 ml/s to 5 ml/s and a variable amount of 70 ml to 100 ml. The studies were evaluated for the presence of complications. RESULTS: Among the 166 cases, 93 patients did not present complications and 73 presented the following findings: endoleak (n=37, circumferential thrombosis (n =29, angulation (n=17, presence of collection at the puncture site (n=10, graft migration (n=7, dissection of access vessels (n=7 and occlusion (n=6. CONCLUSION: In summary, endoleak was the most prevalent complication in the present series, with type II endoleak being most frequently found.

Fabiana Barroso Thomaz

2008-08-01

101

Avaliação pós-operatória do tratamento endovascular de aneurismas da aorta abdominal por angiotomografia com multidetectores / Post-operative evaluation of endovascularly treated abdominal aortic aneurysms by multidetector computed tomography angiography  

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Full Text Available SciELO Brazil | Languages: English, Portuguese Abstract in portuguese OBJETIVO: Este estudo tem como objetivo a avaliação pós-operatória do tratamento endovascular de aneurismas da aorta abdominal por angiotomografia com multidetectores. MATERIAIS E MÉTODOS: Foram analisadas, retrospectivamente, angiotomografias de 166 pacientes (137 homens e 29 mulheres) com idade mé [...] dia de 73 anos portadores de aneurisma da aorta abdominal submetidos a terapêutica endovascular, no período de junho de 2005 a agosto de 2006. Os exames foram feitos em tomógrafo multidetector de 64 canais e os parâmetros adotados foram: colimação, 0,625 mm; pitch, 0,6-1; mAs, 300-400; kV, 120. Em todos os casos foi utilizado meio de contraste iodado não-iônico (350 mg/ml) administrado por meio de bomba infusora, com fluxo de 4 ml/s a 5 ml/s e com volume variável de 70 ml a 100 ml. Os exames foram avaliados quanto à presença de complicações. RESULTADOS: Dos 166 exames realizados, 93 pacientes não apresentaram complicações e 73 apresentaram os seguintes achados: endoleak (n=37), trombose circunferencial da endoprótese (n=29), angulação (n=17), coleção no sítio de punção (n=10), migração da prótese (n=7), dissecção dos vasos de acesso (n=7) e oclusão (n=6). CONCLUSÃO: O endoleak foi a complicação mais prevalente em nosso estudo, sendo o tipo II o mais comum. Abstract in english OBJECTIVE: The present study was aimed at evaluating endovascularly treated abdominal aortic aneurysms by multidetector computed tomography angiography. MATERIALS AND METHODS: Multidetector computed tomography angiography studies of 166 patients were retrospectively analyzed. The sample included 137 [...] men and 29 women with mean age of 73 years who had undergone endovascular treatment for abdominal aortic aneurysm in the period between June 2005 and August 2006. Images were acquired in a 64-channel multidetector tomograph adopting the following parameters: 0.625 mm collimation, pitch 0.6-1, 300-400 mAs, and 120 kV. A nonionic iodinated contrast agent (350 mg/ml) was injected by infusion pump at a rate of 4 ml/s to 5 ml/s and a variable amount of 70 ml to 100 ml. The studies were evaluated for the presence of complications. RESULTS: Among the 166 cases, 93 patients did not present complications and 73 presented the following findings: endoleak (n=37), circumferential thrombosis (n =29), angulation (n=17), presence of collection at the puncture site (n=10), graft migration (n=7), dissection of access vessels (n=7) and occlusion (n=6). CONCLUSION: In summary, endoleak was the most prevalent complication in the present series, with type II endoleak being most frequently found.

Fabiana Barroso, Thomaz; Gaudencio Espinosa, Lopez; Edson, Marchiori; Fabio Vargas, Magalhães; Isabela Ferreira de, Magalhães; Iugiro Roberto, Kuroki; Mônica Ferreira, Caramalho; Romeu Côrtes, Domingues.

2008-08-01

102

Tratamento endovascular do aneurisma da aorta abdominal em contexto de urgência - experiência do Serviço de Angiologia e Cirurgia Vascular do Hospital de Santa Marta / Urgent endovascular repair of abdominal aortic aneurysm - experience of Hospital Santa Marta  

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Full Text Available SciELO Portugal | Language: Portuguese Abstract in portuguese Objectivos: O tratamento endovascular de aneurismas da aorta abdominal é uma alternativa à intervenção cirúrgica convencional, aplicável no contexto de urgência. Em casos anatomicamente favoráveis parece existir uma vantagem significativa a curto e médio prazo, pese embora uma maior taxa de re-inter [...] venções. Material e Métodos: Foi realizada uma análise retrospectiva dos registos de procedimentos endovasculares na aorta abdominal em contexto de urgência, desde o ano de 2004. Analisaram-se um total de 47 doentes, dos quais em 4 a técnica revelou-se inexequível. O tempo médio de follow-up foi de 28,5 meses (1 a 60 meses). Resultados: Verificou-se sucesso técnico em 91% dos casos (43/47). Registou-se uma taxa de mortalidade aos 30 dias de 19% (8/43) nos doentes tratados, e de 23% (11/47) com base na intenção de tratar. Dos doentes tratados, 18 apresentavam-se sintomáticos, 25 com rotura estável e 4 com rotura de aneurisma da aorta abdominal hemodinamicamente instável documentada por tomografia computorizada abdominal. O seguimento destes doentes revelou um caso de endoleak tipo I proximal, tratado cirurgicamente através da colocação de um cuff proximal e dois casos de endoleak tipo II que não se associaram a crescimento do aneurisma, pelo que se optou pelo acompanhamento seriado sem tratamento até à data. Conclusões: Os autores concluem que a experiência institucional com o tratamento endovascular do aneurisma da aorta abdominal em contexto de urgência é favorável, comparando-se aos resultados publicados em grandes séries. A menor mortalidade e morbilidade associada ao procedimento permite tratar um maior espectro de doentes. O seguimento é fundamental para uma atempada detecção e correcção de complicações. Abstract in english Objectives: The endovascular treatment of abdominal aortic aneurysms is an alternative to surgical intervention, applicable in emergency situations. In anatomically suitable cases, appears to be a significant advantage in the short and midterm results, despite a higher rate of re-interventions Metho [...] ds: We performed a search in the records of all rEVAR done since the year 2004. We reviewed a total of 47 patients, 4 of which the technique has proved unfeasible. The median follow-up is 28.5 months (1-60 months) Results: There was a technical success in 91% of cases (43/47). The overall mortality at 30 days was 19% (8/43) in treated patients, and considering the intention to treat, the mortality rose to 23% (11/47). In the patients treated, 18 were symptomatic, 25 had a hemodynamically stable rupture and 4 were hemodynamically unstable. The follow-up of these patients has detected a case of proximal type I endoleak, witch was treated surgically by placing a proximal cuff, and two cases of type II endoleak that were not associated with aneurysm growth, and we chose not to treat. Conclusions: The authors conclude that the institutional experience with the endovascular treatment of abdominal aortic aneurysms in emergency is favourable compared to the results published in large series. The lower mortality and morbidity associated with the procedure allows treating a broader spectrum of patients. Follow-up is essential for a timely detection and correction of complications.

Gonçalo R., Alves; Leonor, Vasconcelos; Hugo, Rodrigues; Sérgio, Eufrásio; Frederico, Gonçalves; João S., Castro; Maria E., Ferreira; João A., Castro; Luís M., Capitão.

2011-06-01

103

Type II Endoleak After Endovascular Repair of Abdominal Aortic Aneurysm: Effectiveness of Embolization  

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The purpose of this study was to report our experience in treating type II endoleaks after endovascular aneurysm repair (EVAR) of abdominal aortic aneurysms. Two hundred eighteen patients underwent EVAR with a Zenith stent-graft from January 2000 to December 2005. During a follow-up period of 4.5 ± 2.3 years, solely type II endoleak was detected in 47 patients (22%), and 14 of them underwent secondary interventions to correct this condition. Ten patients had transarterial embolization, and four patients had translumbar/transabdominal embolization. The embolization materials used were coils, thrombin, gelatin, Onyx (ethylene-vinyl alcohol copolymer), and glue. Disappearance of the endoleak without enlargement of the aneurysm sac after the first secondary intervention was achieved in only five of these patients (5/13). One patient without surveillance imaging was excluded from analyses of clinical success. After additional interventions in four patients and the spontaneous disappearance of type II endoleak in two patients, overall clinical success was achieved in eight patients (8/12). One patient did not have surveillance imaging after the second secondary intervention. Clinical success after the first secondary intervention was achieved in two patients (2/9) in the transarterial embolization group and three patients (3/4) in the translumbar embolization group. The results of secondary interventions for type II endoleak are unsatisfactory. Although the small number ofatisfactory. Although the small number of patients included in this study prevents reliable comparisons between groups, the results seem to favor direct translumbar embolization in comparison to transarterial embolization.

104

Endovascular treatment of abdominal aortic aneurysms--6 years of experience with Ella stent-graft system  

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Purpose: Evaluation of 6-year results of abdominal aortic aneurysm (AAA) treatment by Ella stent-grafts with regard to safety and effectivity in relation to morphology of the aneurysm. Methods: From a group of 172 patients with AAA, in whom elective endovascular treatment was considered, 120 of them (69.8%) were found to be suitable for this type of therapy. The bifurcated type of stent-graft was implanted in 97 patients, uniiliacal type in 19 patients and only four patients were found to be suitable for tubular type of stent-graft. Additional necessary procedures (internal iliac artery occlusion or contralateral common iliac artery occlusion in a group of patients with uniiliacal type of stent-graft) were performed surgically during the stent-graft implantation. CT and US controls were performed at 3, 6 and 12 months after implantation, later every 12 months. Results: Primary technical success was achieved in 109 of the 120 patients (91%). Primary endoleak was recorded in 11 patients (primary endoleak type Ia in seven patients, type Ib in three patients and type IIIa in one patient). Assisted technical success after reintervention or spontaneous seal was 98.3%. Surgical conversion was indicated in two patients (1.7%). Perioperative mortality rate was 3.3%. Total average follow-up period was 20.7 months (range from 2 to 60 months). In nine patients (7.5%) secondary endoleak type II was found at control CT or US, in three patients partial thrombosis of the stent-graft was found. There was no aneurysm rupture during follow-up. Conclusion: Treatment of AAA with Ella stent-graft system is effective and safe. Bifurcated stent-graft is the most frequently used type. Uniiliacal type of stent-graft is used by us only in cases of complicated morphology.

Koecher, Martin E-mail: martin.kocher@seznam.cz; Utikal, Petr; Koutna, Jirina; Bachleda, Petr; Buriankova, Eva; Herman, Miroslav; Bucil, Jiri; Benysek, Vladimir; Cerna, Marie; Kojecky, Zdenek

2004-08-01

105

Endovascular Therapy of Ruptured Abdominal Aortic Aneurysm: Mid- and Long-Term Results  

International Nuclear Information System (INIS)

As an alternative to open aneurysm repair, emergency endovascular aortic repair (EVAR) has emerged as a promising technique for ruptured abdominal aortic aneurysm (rAAA) within the last decade. The aim of this retrospective study is to present early and late outcomes of patients treated with EVAR for rAAA. Twenty-two patients (5 women, 17 men; mean age, 74 years) underwent EVAR for rAAA between November 2000 and April 2006. Diagnostic multislice computed tomography angiography was performed prior to stent-graft repair to evaluate anatomical characteristics and for follow-up examinations. Periprocedural patient characteristics and technical settings were evaluated. Mortality rates, hospital stay, and early and late complications, within a mean follow-up time of 744 ± 480 days, were also assessed. Eight of 22 patients were hemodynamically unstable at admission. Stent-graft insertion was successful in all patients. The total early complication rate was 54%, resulting in a 30-day mortality rate of 23%. The median intensive care unit stay was 2 days (range, 2-48 days), and the median hospital stay was 16 days (range, 9-210 days). During the follow-up period, three patients suffered from stent-graft-related complications. The overall mortality rate in our study group was 36%. EVAR is an acceptable, minimally invasive treatment option in patients with acute rAAA, independent of the patient's general condition. Short- and long-term outcomes are definitely comparable to thosetcomes are definitely comparable to those with open surgical repair procedures

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Cost-effectiveness of the endovascular repair: of Abdominal Aortic Aneurysm in Portugal / Custo-efetividade no tratamento do aneurisma da aorta abdominal: uma abordagem no contexto Português  

Scientific Electronic Library Online (English)

Full Text Available SciELO Portugal | Language: English Abstract in portuguese O tratamento endovascular (EVAR) do aneurisma da aorta abdominal tem sido apontado, nos últimos anos, como uma alternativa bastante atrativa à cirurgia convencional. Não obstante tais benefícios clínicos e percepcionados pelos doentes, os estudos de avaliação económica parecem não ser tão consistent [...] es, o que requer algumas considerações aquando da utilização desta opção terapêutica em larga escala. Objetivos: Avaliar, no contexto Português, o custo-efetividade do EVAR no tratamento do aneurisma da aorta abdominal comparado com o tratamento por cirurgia convencional, usando um modelo desenvolvido previamente no Reino Unido. Metodologia: Os benefícios foram baseados em estudos clínicos internacionais, assumindo que tais resultados podem ser aplicados ao contexto Português. Constituiu-se um painel de peritos para apurar a utilização de recursos associados à intervenção bem como as consequências a curto e médio prazo (valorizados com preços de Portugal). Resultados: A diferença de custos na intervenção primária entre o EVAR e o tratamento por cirurgia convencional, deveu-se ao preço da endoprótese. Não se verificaram diferenças, entre ambos os procedimentos, no que respeita ao custo total associado às complicações e reintervenções. O rácio custo-efetividade incremental (ICER) do EVAR foi de 65,605€/QALY. Conclusões: O tratamento endovascular do aneurisma da aorta abdominal apresenta resultados que parecem comprovar uma elevada efetividade tendo sido utilizada, nos últimos anos, de forma crescente um pouco por todo o mundo. Apesar dos resultados custo-efetividade, aqui apurados, estarem acima do que que é considerado limiar de aceitação em Portugal, o valor económico do EVAR melhoraria se se confirmassem os benefícios a longo prazo que, alguns dos estudos recentes, parecem apontar. Nessas circunstâncias, o tratamento endovascular tornar-se-ia uma intervenção economicamente interessante que, aliada aos bons resultados ao nível da efetividade e da qualidade de vida dos doentes, poderia ser indicada para um maior número de situações clínicas. Abstract in english Endovascular Aneurysm Repair (EVAR) for the treatment of aortic abdominal aneurism has been shown to improve short-term survival and quality of life as compared to Open Repair (OR), while reducing the rate of serious complications and allowing for the treatment of more patients. Objectives: To exami [...] ne the cost-effectiveness of EVAR compared to OR in the treatment of aortic abdominal aneurism in the Portuguese context using a model previously developed in the UK. Methodology: We adapted an international economic evaluation model to the Portuguese situation, assuming that the health benefits of EVAR observed in clinical trials would also apply to Portuguese patients. We carried out an expert panel survey to calculate the resource use associated with the intervention and its short and long-term consequences, valued with Portuguese prices. Results: The major cost difference in the primary intervention (difference of 3,064 € in favor of OR) is related to the cost of the endograft/graft. No major differences are observed in the total cost of complications and re-interventions between the two procedures. EVAR represents a cost of 16,709 € over lifetime compared to 12,130 € for OR. Using data from the literature we show that EVAR allows for 0.17 additional undiscounted years of life and 0.091 additional undiscounted quality-adjusted life years. The incremental cost-effectiveness ratio (ICER) of EVAR is of 65,605 €/QALY. Conclusion: Endovascular repair of aortic abdominal aneurysm represents an effective alternative and has been used increasingly in Portugal and elsewhere. Our study shows that its cost-effectiveness is currently above the commonly accepted threshold in Portugal, but that the economic value of EVAR would greatly improve if benefits were confirmed in the long run after the intervention. Under these circumst

Paulo, Sousa; Julian, Perelman; Klára, Dimitrovová; António Santos, Simões; Daniel, Brandão; João Albuquerque e, Castro; Luís Mendes, Pedro; Rui, Machado; Sérgio, Sampaio; Paul, Hayes; José, Fernandes e Fernandes.

2014-06-01

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The Use of Direct Thrombin Injection to Treat a Type II Endoleak Following Endovascular Repair of Abdominal Aortic Aneurysm  

International Nuclear Information System (INIS)

This report describes the use of thrombin to treat a type II endoleak which was causing continued abdominal aortic aneurysm expansion in a patient who had undergone endovascular repair. A small quantity of thrombin was injected into the leak by a percutaneous approach directly into the aneurysm sac using color doppler ultrasound. The procedure was successful and required only a few minutes to perform. We believe this procedure is an alternative to some of the more complex and technically challenging means of treating this lesion

108

Evaluation with Doppler vascular ultrasound in postoperative endovascular treatment of abdominal aortic aneurysm: a prospective comparative study with angiotomography  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: English Abstract in english BACKGROUND: Diagnosis of abdominal aortic aneurysm (AAA) is usually incidental, and surgical treatment, when indicated, may be open or endovascular. The drawbacks of computed angiotomography (CTA) and the advantages of Doppler ultrasonography have led to the development of alternative follow-up pr [...] otocols, comparing the two methods. OBJECTIVE: To determine validity indices for Doppler ultrasonography and to correlate them with CTA results in a group of patients who had undergone elective endovascular treatment of AAAs. MATERIAL AND METHODS: Thirty-three patients were selected. The following three items were evaluated: 1) presence or absence of endoleak; 2) presence of blood flow in the aortoiliac segment; and 3) maximum AAA diameter. RESULTS: For the detection of endoleak, Doppler ultrasonography showed a sensitivity of 54.5%, a specificity of 92.8%, a positive predictive value of 85.7%, a negative predictive value of 92.8%, and an overall accuracy of 76%. For the evaluation of blood flow in the aortoiliac segment, values were 100, 97.8, 80, 97.8, and 98%, respectively. Maximum AAA diameter was similarly measured by both methods, with statistically significant differences (mean difference: 1.98 mm). Pearson's correlation coefficient was 0.97, showing that Doppler ultrasonography and CTA yielded similar results. CONCLUSION: Doppler ultrasonography showed good validity indices and a moderate correlation with CTA in the postoperative evaluation of patients undergoing endovascular treatment of AAAs.

Graciliano Jose, Franca; Liz Andrea Villela, Baroncini; Aguinaldo de, Oliveira; Enrique Antonio, Vidal; Marcio, Miyamotto; Jeferson Freitas, Toregeani; Luiz Otavio de Mattos, Coelho; Jorge Rufino Ribas, Timi.

2013-06-01

109

Fístula arteriovenosa postraumática: tratamiento endovascular. Revisión de la literatura y presentación de un caso clínico / Endovascular treatment of a post-traumatic arterio-venous fistula: Presentation of a clinical case and literature review  

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Full Text Available SciELO Spain | Language: Spanish Abstract in spanish Las fístulas arteriovenosas en la cabeza y el cuello son entidades poco frecuentes. La mayoría es secundaria a heridas penetrantes por arma blanca. Se describe el tratamiento exitoso mediante cirugía endovascular de una fístula postraumática tras una herida penetrante entre la arteria maxilar intern [...] a izquierda y la vena yugular externa. A través de este caso clínico y la revisión de la literatura se ilustran las causas, manifestaciones, estudio radiológico y tratamiento de una fístula postraumática entre la arteria maxilar interna y la vena yugular externa. A través de este caso clínico se demuestra la utilidad de los procedimientos endovasculares en el tratamiento de estas complicaciones. Abstract in english Traumatic arteriovenous fistulas of the head and neck region are uncommon. The majority are due to penetration of blunt injury. We describe a successful endovascular treatment of a posttraumatic fistula between the left maxillary artery and the external jugular vein due to a penetration injury. This [...] case and a review of the literature illustrate the causes, manifestations, image studies and treatment for a posttraumatic fistula between the maxillary artery and the external jugular vein. This case demonstrate the utility of endovascular treatment of head and neck injuries complications.

R., Sánchez; B., Marín; A., Fernández-Prieto; L., Pingarrón; R., Frutos; J. del, Castillo; M., Burgueño.

2010-06-01

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Fístula arteriovenosa postraumática: tratamiento endovascular. Revisión de la literatura y presentación de un caso clínico Endovascular treatment of a post-traumatic arterio-venous fistula: Presentation of a clinical case and literature review  

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Full Text Available Las fístulas arteriovenosas en la cabeza y el cuello son entidades poco frecuentes. La mayoría es secundaria a heridas penetrantes por arma blanca. Se describe el tratamiento exitoso mediante cirugía endovascular de una fístula postraumática tras una herida penetrante entre la arteria maxilar interna izquierda y la vena yugular externa. A través de este caso clínico y la revisión de la literatura se ilustran las causas, manifestaciones, estudio radiológico y tratamiento de una fístula postraumática entre la arteria maxilar interna y la vena yugular externa. A través de este caso clínico se demuestra la utilidad de los procedimientos endovasculares en el tratamiento de estas complicaciones.Traumatic arteriovenous fistulas of the head and neck region are uncommon. The majority are due to penetration of blunt injury. We describe a successful endovascular treatment of a posttraumatic fistula between the left maxillary artery and the external jugular vein due to a penetration injury. This case and a review of the literature illustrate the causes, manifestations, image studies and treatment for a posttraumatic fistula between the maxillary artery and the external jugular vein. This case demonstrate the utility of endovascular treatment of head and neck injuries complications.

R. Sánchez

2010-06-01

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Oclusión de la aorta abdominal infrarrenal: Reconstrucción endovascular con stent / Endovascular Stent-Graft Repair for the Occlusion of the Infrarenal Aorta  

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Full Text Available Introducción La oclusión total de la aorta abdominal es de presentación poco frecuente y afecta más a menudo a mujeres de edad mediana con antecedentes de tabaquismo y dislipidemia. El punto de partida de la terapéutica endovascular en la aorta fue la angioplastia en las arterias ilíacas y fue progr [...] esando desde el balón hasta la colocación de stents. Objetivo Comunicar nuestros resultados inmediatos y el seguimiento a mediano plazo de pacientes con oclusión de la aorta abdominal tratadas con stents por vía endovascular. Material y métodos Desde octubre de 1998 a mayo de 2005 en nuestro servicio se trataron 5 pacientes de sexo femenino por oclusión total de la aorta abdominal, con síntomas de claudicación grave de ambos miembros inferiores. Los procedimientos se realizaron con anestesia local y sedación. Por vía femoral, se intenta recanalizar con las cuerdas de Whooley o hidrófila Glidewire. Posteriormente se realiza un angiograma abdominal e intercambio por cuerda Amplatz con la cual se avanza el balón para realizar las dilataciones antes de implantar el stent. Las pacientes con lesiones ilíacas también se trataron con stent. El índice tobillo-brazo era de 0,71. El promedio de hospitalización fue de 2 días. Al alta se indicaron clopidogrel y aspirina como medicación antiplaquetaria, excepto la primera paciente (ticlopidina y aspirina). El seguimiento fue clínico y por ecografía Doppler color a la semana, al mes, a los 6 meses y a los 12 meses. Resultados Las pacientes eran de sexo femenino, con antecedentes de tabaquismo y dislipidemia. Todos los procedimientos fueron técnicamente exitosos, con mejoría del índice tobillo-brazo a 0,98. Una paciente presentó un hematoma inguinal en el sitio de punción, con buena evolución posterior. En el seguimiento alejado clínico y por ultrasonido se observó una permeabilidad de la aorta del 100%, con estenosis en una paciente tratada a nivel de la arteria ilíaca en el segmento no cubierto por el stent. Conclusiones En este grupo de pacientes con oclusión total de la aorta abdominal, la angioplastia con balón e implantación de stent ha demostrado que es una técnica segura y efectiva, con éxito técnico y permeabilidad en el seguimiento a mediano plazo en todas las pacientes. Abstract in english Background Total occlusion of the abdominal aorta is an infrequent condition mostly affecting middle-aged women with a history of smoking and dyslipemia. Angioplasty of the iliac arteries was the starting point of endovascular treatment of the aorta, progressing from balloon angioplasty to stent-gra [...] fts insertion. Objective To report the immediate results and mid-term follow-up outcomes in patients with occlusion of the abdominal aorta treated with endovascular stent-graft repair. Material and Methods From October 1998 to May 2005, 5 female patients with total occlusion of the abdominal aorta with severe symptoms of claudication of both lower limbs were treated at our Department. The procedures were performed under local anesthesia and sedation. Whooley or hydrophilic Glidewire guide wires were inserted through the femoral artery. After abdominal angiography was performed, guide wires were removed and the balloon was introduced through an Amplatz guide wire; dilatations were done before the stent-graft was placed. Patients with iliac lesions were also treated with stents. The ankle-arm index was 0.71. Mean hospital stay was 2 days. Patients were discharged with clopidogrel and aspirin as antiplatelet therapy, except for the first patient who received ticlopidine and aspirin. Clinical assessment and color echo-Doppler were performed at week 1, and at 1, 6 and 12 months of follow-up. Results All patients were women, with a history of smoking and dyslipemia. All the procedures were technically successful, and the ankle-arm index improved to 0.98. One patient presented an inguinal hematoma at the puncture site, with favorable outcomes. During late follow-up, ultrasound showed 100% aortic patency, and one patient presented a ste

Carlos, Fernández-Pereira; Juan, Mieres; Matías, Rodríguez-Granillo; Juan, Guiroy; Gustavo, Risau; Claudio, Llaurado; Alejandro, Incarbone; Gastón, Rodríguez-Granillo; N. Gustavo, Allende; Alfredo E., Rodríguez.

2008-06-01

112

Endovascular Treatment of Ruptured Abdominal Aneurysm into the Inferior Vena Cava in Patient After Stent Graft Placement  

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We report the case of a patient who underwent endovascular repair and then reintervention as a result of the presence of a persistent endoleak complicated by an aortocaval fistula. A 76-year-old patient with a history of endovascular treatment for abdominal aortic aneurysm 2 years earlier had a palpable abdominal mass, high-output cardiac failure, and renal failure. A computed tomographic scan and angiography revealed bending of the right iliac limb, a type I endoleak, and rupture of the aneurysm into the inferior vena cava with aortocaval fistula formation. An iliac extension was positioned in the right external iliac artery. The procedure was finished successfully. Control angiography showed normal flow within the endoprosthesis, and both iliac arteries were without signs of endoleakage and aortocaval fistula. Ectatic common iliac artery may lead to a late distal attachment site endoleak. The application of a stent graft in cases of secondary aortocaval fistula after stent graft repair is a good option, particularly in emergency cases.

113

Enhancement of ascites during abdominal oncological endovascular intervention without iatrogenic extravasation in patients with chronic liver disease  

International Nuclear Information System (INIS)

Aim: To evaluate ascites enhancement during abdominal oncological endovascular intervention (IVR) without iatrogenic extravasation and the factors associated with enhancement of ascites. Methods and materials: CT images were obtained using an IVR-CT system for 73 patients with chronic liver disease and ascites. The CT images were obtained at least twice during each IVR. Radiodensity values of ascites at CT were measured for the first and last CT images in each procedure. The factors evaluated for their association with elevated ascitic fluid density were age, interval from the first to the last CT scan, Child–Pugh score, albumin level, total bilirubin level, prothrombin activity, the need for transcatheter arterial chemoembolization (TACE), estimated glomerular filtration rate, total amount of contrast material (CM) per square metre of body surface area (/m2), amount of ascitic fluid, and the amount of CM entering the superior mesenteric artery (SMA) or coeliac artery/m2. Results: The average ascitic radiodensity values for the first and last CT images were 18 and 51 HU, respectively. The percentage of patients with “significantly elevated” ascitic fluid density (?10 HU) was 92%. Multivariate analysis showed that the total amount of CM/m2 and the amount of ascitic fluid were significantly correlated and inversely correlated, respectively, with elevated ascitic fluid density. Conclusions: Ascites enhancement without extravasation frequently occurs during abdominal oncological endovascular intervention in patients with chronic liver disease

114

Non-invasiv, Multi Detector Row (MDR) based Computational Fluid Dynamics (CFD) analysis of hemodynamics in infrarenal Abdominal Aortic Aneurysm (AAA) before and after endovascular repair  

International Nuclear Information System (INIS)

Purpose: Simulation, description and analysis of dynamic pressure in infrarenal abdominal aortic aneurysms (AAA) before and after endovascular repair. Materials and Methods: During March 1996 and May 2001, 13 patients with AAA underwent endovascular treatment. The MDR-CT scans of these patients were used for the non-invasive analysis of the hemodynamics in the aorta with CFD software before and after endovascular repair. One pre-interventional and three post-interventional CT scans were analyzed for each patient. Results: Compared to the pre-interventional simulation, endovascular treatment led to an average dynamic pressure decrease of 1057 Pa in 10 of 13 patients. During the subsequent course, the median of the dynamic pressure decreased in 8 of 13 patients. Vulnerable regions initially identified as high-pressure regions, like the docking area or the second stent limb, adapted to the pressure in the surrounding tissue in the course of time. (orig.)

115

Experiencia con el tratamiento endovascular de los aneurismas del tope de la arteria basilar  

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: Spanish Abstract in spanish Objetivo. Describir los resultados inmediatos obtenidos en una serie de pacientes con aneurismas del tope de la arteria basilar tratados por vía endovascular en relación con el tamaño del cuello y saco del aneurisma, la presencia o no de ruptura aneurismática y la gravedad clínica. Método. Se realiz [...] ó un estudio descriptivo en una cohorte retrospectiva de 37 pacientes adultos de ambos sexos con aneurismas del tope de la basilar tratados por vía endovascular (periodo 1993 - 2006). Los pacientes fueron clasificados con la escala de Hunt-Hess. Los aneurismas fueron clasificados según su tamaño y ancho del cuello. El grado de oclusión se clasificó en 4 categorías: A (100%), B (>95%), C (>90%) y D ( Abstract in english Objective: We describe the early results obtained in a series of cases with basilar tip aneurysms treated by endovascular surgery with detachable coils. The results are compared according to the size of the neck and the sac of the aneurysm, the history of aneurysm rupture and neurological state. Met [...] hod: A retrospective descriptive study was made in a cohort of 37 adults patients of both sexes with basilar tip aneurysms treated by endovascular surgery (period 1993 - 2006). Hunt- Hess scale was used for patients classification. The aneurysms were classified according to their size and the wide of the neck . The occlusion grade was classified in 4 categories: A (100%), B (> 95%), C (> 90%) and D(

Javier, Goland; Silvia, Garbugino; Walter, Casagrande; Julio, Fernández; Luis, Lemme-Plaghos.

2006-09-01

116

Capture and repositioning of third-generation migrated abdominal endovascular graft by bilateral femoral wire externalization and pulling by "horse-riding" technique followed by balloon EVG stabilization.  

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Endovascular aneurysm repair is becoming the treatment of choice for elderly patients bearing abdominal aortic aneurysms with particular anatomical characteristics. Endovascular grafts are usually oversized to achieve sealing and minimize graft migration, the likelihood of which is also reduced by fixation hooks and barbs in the newer generation grafts. Yet, upward migration of the prosthesis, potentially compromising flow to renal and splanchnic vessels, may still occur acutely and requires timely management. We describe a patient with abdominal aortic aneurysm in whom proximal migration of an endovascular graft occurred, leading to renal and mesenteric artery obstruction, which was successfully managed by means of capturing and repositioning the device with a "horse-riding" technique followed by balloon stabilization of the graft to reduce the risk of re-dislodgment during controlateral leg insertion. PMID:23220987

Marzullo, Raffaella; Aprile, Alessandro; Sangiorgi, Giuseppe

2012-12-01

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Resultados en el corto y mediano plazo de la reparación endovascular de aneurismas de la aorta abdominal y arterias ilíacas: Experience in 28 patients / Endovascular repair of abdominal aortic aneuriysms  

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Full Text Available Objetivo: Evaluar los resultados iniciales y en el mediano plazo de la reparación endovascular de los aneurismas del sector aorto-ilíaco. Material y Método: Revisión de una serie clínica de pacientes operados en forma consecutiva por vía endovascular en el Hospital Dr. Eduardo Pereira de Valparaíso [...] por aneurismas del sector aorto-ilíaco desde 2007 al 2012 con seguimiento actualizado. Resultados: Se trata de 28 pacientes (22 varones), una edad promedio de 72,5 años (rango 59-86) y un seguimiento promedio de 27,4 meses (rango 1-65 meses). Los pacientes fueron seleccionados de acuerdo a la anatomía aorto-ilíaca y su estado general. A 25 pacientes se les instaló una prótesis bifurcada tri-modular, a un paciente una prótesis bifurcada con sólo dos módulos, a otro paciente una prótesis aorto uni ilíaca, y a una paciente una endoprótesis recta luego de una desconexión visceral abdominal. Un paciente fallece a los 31 días después de operado por falla orgánica múltiple y otros dos pacientes fallecen a los 24 meses a causa de un cáncer vesicular y a los 36 meses por un cáncer rectal. El seguimiento alejado evidenció ausencia de endofugas tipo 1, 3 ó 4 y una endofuga tipo 2 en dos pacientes, que no han requerido ninguna intervención. Conclusión: La reparación endovascular de los aneurismas del sector aorto-ilíaco es segura en el corto y mediano plazo, en pacientes con las condiciones anatómicas apropiadas en un centro quirúrgico adecuadamente equipado. Abstract in english Background: Endovascular repair of aortic aneurysms is less invasive than the traditional surgical approach. Aim: To evaluate the early and mid-term results of aorto-iliac aneurysm endovascular repair. Material and Methods: Analysis of 28 patients aged 59 to 86 years (22 males), subjected to an endo [...] vas-cular repair of aorto-iliac aneurysms between 2007 and 2012. Results: The follow up period of patients ranged from 1 to 65 months. A tri-modular bifurcated prosthesis was installed in 25 patients. A bi-modular bifurcated prosthesis was installed in one patient, an aorto uni iliac prosthesis was installed in one patient; in other patient, a straight endoprosthesis was installed after an abdominal visceral disconnection. In cases of associated iliac aneurysms, unilateral iliac embolization was carried out in seven patients and bilateral embolization in one patient. In one case, the sealing of the hypogastric artery was achieved leaning the prosthetic branch on the hypogastric artery ostium. One patient died 31 days after the operation due to multiple organ failure. One patient died 24 months after surgery due to a gallbladder cancer and other patient died 36 months after surgery due to a rectal cancer. The long-term follow-up showed the presence of type 2 endo-leaks in two patients. The aneurysm decreased in size in 83% of patients after 2 years of follow-up. In five patients, a non-progressive laminar parietal thrombosis inside the endoprosthesis, was observed in the immediate postoperative period. It was initially treated with oral anticoagulants. Conclusions: Endovascular repair of aorto-iliac aneurysms is safe and effective in patients with appropriate anatomical conditions, if a skilled surgical team is available.

JUAN, BOMBIN F; ALEJANDRO, KOTLIK A; JAIME, FERNÁNDEZ V; IVER, ZEGARRA I.

2013-12-01

118

TRATAMIENTO ENDOVASCULAR DE LA COARTACIÓN AÓRTICA NATIVA Y RECURRENTE EN PACIENTES MAYORES DE 4 AÑOS: RESULTADOS Y COMPLICACIONES / ENDOVASCULAR REPAIR OF NATIVE AND RECURRENT AORTIC COARCTATION IN PATIENTS OLDER THAN 4 YEARS OF AGE  

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Full Text Available SciELO Chile | Language: Spanish Abstract in spanish Objetivos: Reportar nuestra experiencia en el tratamiento endovascular de la Coartación Aórtica (CoAo). Métodos: Se revisaron los registros clínicos de los pacientes mayores de 4 años intervenidos por una CoAo nativa o recoartación en el Hospital Clínico de la Universidad Católica entre los años 200 [...] 7 y 2012. Se realizaron estadísticas descriptivas y se utilizó el test de Wilcoxon signed rank, con una p Abstract in english Aim: There is an increasing interest in the endovascular therapy of both native and recurrent aortic coarcta-tion (Aco). In this article we report the results of endo-vascular treatment of ACo in children and adults at our institution, from 2007 to 2012. Method and Results: The clinical, angiographi [...] c and hemodynamic data of all patients submitted to endovascular repair of ACo at the Endovascular Therapy Center of the Catholic University Hospital were reviewed. Children under 4 years of age were excluded. A total of 27 subjects were included. Mean age was 20.6 years (range 5-64); 30% were females and 30% were under 14 years of age. 15 patients had associated congenital defects: bicuspid aortic valve ( 9), VSD (3), or both VSD and bicuspid aortic valve (3). Hypertension was present in 33% of patients. 74% had endovas-cular repair of a native Aco and 26% of a re-coarctation (2 of them post surgical treatment and 5 post endovas-cular repair). 85% of cases had stent implantation. Repair resulted in a significant (p

Martín, Valdebenito; Alejandro, Martínez; Gonzalo, Martínez; Nicolás, Veas; Dante, Lindefjeld; Francisco, Garay; Felipe, Heusser; Daniel, Springmüller; Alejandro, Fajuri; Alejandra, Flores; Francisco, Vergara.

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Endovascular Abdominal Aortic Aneurysm Repair under General Anesthesia Does Not Decrease Perioperative Myocardial Ischemic Events Compared with Open Repair  

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Full Text Available Objectives: Endovascular abdominal aortic aneurysm repair (EVAR is a common procedure for abdominal aortic aneurysm (AAA, based on minimal invasiveness compared with open surgical repair (OSR. However, general anesthesia can cause considerable perturbations in patients with AAA undergoing operative repair. The aim of this study was to compare the incidence of myocardial ischemic events in association with hemodynamic changes during EVAR and OSR under general anesthesia. Methods: We retrospectively reviewed the anesthetic and medical records of patients who underwent elective abdominal aortic aneurysm repair. ST segment changes on electrocardiography and hemodynamic changes were reviewed by the attending physicians. Results: Among 120 patients, EVAR and OSR were performed in 81 and 39 patients, respectively. There were no significant differences in preoperative morbidity between the two groups. The amount of estimated blood loss was significantly lower in EVAR than OSR. The incidence of ST segment changes in the two groups (EVAR: 16%, OSR: 23% was not statistically different. ST segment changes occurred mainly postoperatively at resolution of anesthesia in EVAR, compared with intraoperatively in OSR. ST segment changes were mostly accompanied by tachycardia in EVAR patients, whereas they were associated with hypotension in OSR. Conclusion: Our results demonstrated a comparable incidence of perioperative ST segment changes under general anesthesia in EVAR and OSR. Patients who undergo EVAR and develop tachycardia are at risk of myocardial ischemia at resolution of anesthesia.

Sumio Hoka

2013-03-01

120

Endovascular therapy: new alternative for treatment of cerebral vasospasm associated with spontaneous subarachnoid hemorrhage La trapia endovascular: una nueva alternativa en el tratamiento del vasoespasmo cerebral asociado a la hemorragia subaracnoidea espontánea  

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Full Text Available Cerebral vasospasm is the first treatable cause of death and disability secondary to spontaneous subarachnoid hemorrhage due to ruptured cerebral aneurysms. However, its treatment has been disapointing with poor results. Despite the fact that the physiopathologic mechanisms governing this phenomenon are largely unknown, during the last nine years, simultaneously with the development of endovascular therapy techniques for treatment of cerebrovascular diseases, two new alternatives have emerged in order to alleviate cerebral vasospasm: intraarterial papaverine and cerebral balloon angioplasty. We report the use of intraarterial papaverine in one case to treat cerebral vasospasm presented during the endovascular therapy procedure; a review of literature is included. EI vaso espasmo cerebral es la principal causa tratable de muerte e incapacidad por hemorragia subaracnoidea espontánea secundaria a la ruptura de un aneurisma cerebral. Sin embargo, su tratamiento ha sido tradicionalmente frustrante, con resultados desalentadores. A pesar de que aún no se han aclarado del todo los mecanismos fisiopatológicos a través de los cuales ocurre este intrigante fenómeno, en los últimos 9 años, paralelamente al desarrollo de las técnicas endovasculares para el tratamiento de las enferm~dades cerebrovasculares, han surgido nuevas alternativas en el manejo del vasoespasmo cerebral. Entre ellas se destacan el uso intraarterial de papaverina y la angioplastia con balón de los vasos cerebrales. Se presenta una revisión del estado actual de estos novedosos instrumentos terapéuticos, así como el reporte de un caso en el cual usamos la papaverina intraarterial en el tratamiento del vasoespasmo quese presentó durante un procedimiento endovascular para excluir un aneurisma de la arteria cerebral media.

Sergio Vargas

1998-04-01

121

Early Outcomes of Open Abdominal Repair Versus Endovascular Repair for Abdominal Aortic Aneurysm: Report from National Hospital Organization Network Study in Japan  

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Objective: Early outcomes of open abdominal repair (OS) versus endovascular repair (EVAR) for abdominal aortic aneurysm were retrospectively analyzed, after commercialized devices for EVAR had become available in Japan. Patients and Methods: A total of 781 consecutive patients (OS, n = 522; EVAR, n = 259) were treated at ten medical centers between January 2008 and September 2010. The OS group comprised patients with preoperative shock (SOS, n = 34) and without shock (NOS, n = 488). Results: Patients in the EVAR group were 3 years older than those in the NOS group. There was greater prevalence of hostile abdomen, on dialysis, chronic obstructive pulmonary disease on inhaled drug, and cerebrovascular disease in the EVAR group than in the NOS group. Surgical mortality was 16 cases (2.0% in all patients, EVAR: 0.8%, NOS: 1.4%, SOS: 21%). Hospital stay >30 days was documented in 52 (11%) with NOS, 11 (33%) with SOS, and 8 (3%) with EVAR. Thirty late deaths included 6 aneurysm related death and 14 cardiovascular causes at a mean follow up of 1.0 year. The survival rates freedom from all cause death at one year, were 95 ± 1% in NOS and 94 ± 2% in EVAR respectively. Conclusion: Though significant differences in patient characteristics among three groups were noted, early results were satisfactory. PMID:23555507

Onohara, Toshihiro; Okamoto, Minoru; Yamamoto, Tsuyoshi; Shimoe, Yasushi; Okada, Masahiro; Ishibashi, Yoshimitsu; Yamashita, Masafumi; Takahashi, Toshiki; Kasashima, Fuminori; Kishimoto, Jyunji; Mizuno, Akihiro; Kei, Jyunichi; Nakai, Mikizou; Suhara, Hitoshi; Endo, Masamitsu; Nishina, Takeshi; Furuyama, Tadashi; Kawasaki, Masakazu; Mikasa, Keita; Ueno, Yoichirou

2012-01-01

122

A prospective clinical, economic, and quality-of-life analysis comparing endovascular aneurysm repair (EVAR), open repair, and best medical treatment in high-risk patients with abdominal aortic aneurysms suitable for EVAR: the Irish patient trial.  

LENUS (Irish Health Repository)

To report the results of a trial comparing endovascular aneurysm repair (EVAR) to open repair (OR) and best medical therapy (BMT) involving high-risk patients with abdominal aortic aneurysms (AAA) suitable for EVAR.

Hynes, Niamh

2007-12-01

123

Endoleakage after endovascular treatment of abdominal aortic aneurysms: diagnosis, significance and treatment  

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Endoleak, also called leakage, leak and Perigraft leak, is a major complication and its persistence represents a failure of endovascular aortic aneurysm repair. Its detection and treatment is therefore of primary importance, since endoleak can be associated with pressurization (increase in pressure) of the sac, resulting in expansion and rupture of the aneurysm. The aim of this paper is to discuss the definition, significance, diagnosis and different options to treat endoleak. (orig.)

Golzarian, Jafar [University of Iowa, University of Iowa Heath Care, IA (United States); Valenti, David [McGill University, Royal Victoria Hospital, McGill University Health Centre, Montreal (Canada)

2006-12-15

124

Lessons learnt from the EUROSTAR registry on endovascular repair of abdominal aortic aneurysm repair  

International Nuclear Information System (INIS)

Objective: The EUROSTAR project is a multicentred database of the outcome of endovascular repair of infra-renal aortic aneurysms. To date 92 European centres of vascular surgery have contributed. The purpose of the article here is to review the medium term (up to 4 years) results of endovascular aneurysm repair as reported to Eurostar. Patients and methods: Patients intended for endovascular aneurysm repair were notified to the EUROSTAR Data Registry Centre before treatment in order to eliminate bias due to selective reporting. The following data was collected on all patients: (1) their demographic details and the anatomical characteristics of their aneurysms, (2) details of the endovascular device used, (3) procedural complications and the immediate outcome, (4) results of contrast enhanced CT imaging at 3, 6, 12 and 18 months after operation and at yearly intervals thereafter, (5) all adverse events. Life table analysis was performed to determine the cumulative rates of: (1) death from all causes, (2) secondary intervention. Risk factors for rupture and late conversion were identified by regression analysis. Results: By July 2000, 2862 patients had been registered and their median duration of follow-up was 12 mo (range 0-72). Successful deployment was achieved in 2812 patients with a perioperative (30 day) mortality of 2.9%. In 2464 patients enrolled by March 2000 late rupture of the aneurysm occurred in 14 patients for an annual cumulative rate of 1%. The significannual cumulative rate of 1%. The significant factors were proximal type I endoleak (P=0.001), midgraft (type III) endoleak (P=0.001), graft migration (P=0.001) and post-operative kinking of the endograft (P=0.001). Forty-one patients had late conversion to open repair for an annual cumulative rate (risk) of approximately 2.1%. Risk factors (indications) for late conversion were: proximal type I endoleak (P=0.001), midgraft (type III) endoleak (P=0.001), type II endoleak (P=0.003), graft migration (P=0.001), graft kinking (P=0.001) and distal type I endoleak (P=0.001). Conclusions: Endovascular repair of infra-renal aortic aneurysms using the first and second-generation devices that predominated in this study was associated with a risk of late failure of 3% per year, based upon an analysis of observed primary endpoints of rupture and conversion. Eurostar continues to provide responsible evaluation of the technique for the benefit of both physicians and the industry

125

Correlation between intrasac pressure measurements of a pressure sensor and an angiographic catheter during endovascular repair of abdominal aortic aneurysm  

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Full Text Available PURPOSE: To establish a correlation between intrasac pressure measurements of a pressure sensor and an angiographic catheter placed in the same aneurysm sac before and after its exclusion by an endoprosthesis. METHODS: Patients who underwent endovascular abdominal aortic aneurysm repair and received [...] an EndoSureTM wireless pressure sensor implant between March 19 and December 11, 2004 were enrolled in the study. Simultaneous readings of systolic, diastolic, mean, and pulse pressure within the aneurysm sac were obtained from the catheter and the sensor, both before and after sac exclusion by the endoprosthesis (Readings 1 and 2, respectively). Intrasac pressure measurements were compared using Pearson's correlation and Student's t test. Statistical significance was set at p0.05), mean (p>0.05), and pulse (p0.05) by the sensor. CONCLUSION: The excellent agreement between intrasac pressure readings recorded by the catheter and the sensor justifies use of the latter for detection of post-exclusion abdominal aortic aneurysm pressurization.

Pierre Galvagni, Silveira; Christopher William Teixeira, Miller; Rafael Freygang, Mendes; Gilberto Nascimento, Galego.

126

Cide-a gene expression in patients with obesity qualified for endovascular treatment of abdominal aorta aneurysm.  

Science.gov (United States)

Abstract CIDE-A gene and the genes of LRP group play a key role in the regulation of the body weight and lipid metabolism in mammals. CIDE-A is defined as a potential human obesity gene and the LRP1 gene is associated with the development of abdominal aortic aneurysm (AAA). The aim of the study was to define the role of CIDE-A gene in patients with dyslipidemia and asymptomatic AAA. Material and methods. The study group consisted of 38 subjects, including 27 men and 11 women qualified for endovascular aneurysm repair (EVAR). The subjects with abdominal aortic aneurysm were enrolled in the study group, depending on the body mass index (BMI); in obese patients (BMI > 30). The control group (n = 16) included subjects without lipid disorders. One-step isolation of RNA from lymphocytes and adipose tissue cells was performed using the modified TRI method by Chomc-zynski and Sacchi, and then the gene expression was tested by real-time PCR. Results. The highest mean relative of the gene expression for CIDE-A was reported in subjects with the normal body weight. The lowest mean relative of the gene expression for CIDE-A was observed in the group of obese patients with aortic aneurysm and lipid disorders. A high negative correlation (r = -0.7101) in the gene expression for CIDE-A was observed in the group of obese patients with aortic aneurysm, depending on the BMI. Conclusions. Due to the important role of the CIDE-A gene and Cide-A protein in the development of metabolic syndrome, obesity and the accompanying vascular lesions such as abdominal aortic an-eurysm, seen in this context, the tested gene and protein Cide-A represent a potential therapeutic target in these diseases. PMID:25720106

Feldo, Marcin; Kocki, Janusz; Feldo, Jan; ?ukasik, Sylwia; Bogucki, Jacek; Skwarzy?ski, Adam; Wro?ski, Jacek; K?sik, Jan; Zubilewicz, Tomasz

2015-01-01

127

Follow-up of abdominal aortic aneurysm after endovascular aortic repair: Comparison of volumetric and diametric measurement  

International Nuclear Information System (INIS)

Purpose: To determine the correlation of maximal diameter measurements with volumetric evaluation of size after endovascular aortic repair (EVAR) of abdominal aortic aneurysms (AAA) using computed tomography angiography (CTA) and to survey its applicability for clinical follow-up. Materials and methods: 73 consecutive patients (2 females, 71 males; age 38–84 years; mean age, 69.1 ± 8 years) with AAA were treated with percutaneous EVAR in a single institution. For follow-up, CTA was performed periodically after EVAR. Images were evaluated for maximal diameter in consensus by two experienced radiologists. Using OsirixTM, volumetric measurements were done by one radiologist, including the entire infrarenal abdominal aorta. Results: In 73 patients 220 CTA examinations were performed after EVAR with a mean follow-up of 17.3 months (range, 1.8–42.7 months). The mean postinterventional volume of aneurysm was 165.63 ml ± 93.29 ml (range, 47.94–565.67 ml). The mean maximal postinterventional diameter was 5.91 ± 1.52 cm (range, 3.72–13.82 cm). At large over the entire observation period a slight, non-significant decrease of 1.6% (2.58 ml ± 69.05 ml, range 82.82–201.92 ml) in volumes and a 9.3% (mean 0.55 cm ± 1.22 cm, range 2.85–1.93 cm) in diameters were observed. For all examinations a high correlation of volume and diameter was calculated (r = 0.813–0.905; ? < 0.01). Conclusion: For follow-up of abdominal EVAR using CTA there is a high correlation betweengh correlation between volumetric and diametric measurements of aneurysm. Based on a daily clinical routine setting, measurements of maximal diameters in cross sectional imaging of AAA after EVAR seems to be sufficient to exclude post interventional enlargement.

128

Tuberculous Aneurysm of the Abdominal Aorta: Endovascular Repair Using Stent Grafts in Two Cases  

OpenAIRE

Tuberculous aneurysm of the aorta is exceedingly rare. To date, the standard therapy for mycotic aneurysm of the abdominal aorta has been surgery involving in-situ graft placement or extra-anatomic bypass surgery followed by effective anti-tuberculous medication. Only recently has the use of a stent graft in the treatment of tuberculous aortic aneurysm been described in the literature. We report two cases in which a tuberculous aneurysm of the abdominal aorta was successfully repaired using e...

Liu, Wei Chiang; Kwak, Byung Kook; Kim, Kyo Nam; Kim, Soon Yong; Woo, Joung Joo; Chung, Dong Jin; Hong, Ju Hee; Kim, Ho Sung; Lee, Chang Jun; Shim, Hyung Jin

2000-01-01

129

Early Outcomes of Endovascular Aneurysm Repair for Abdominal Aortic Aneurysm: First Preliminary Report of National Hospital Organization Network Study in Japan  

OpenAIRE

Objective: Patients and Methods: In order to assess the early outcomes of endovascular aneurysm repair (EVAR) for abdominal aortic aneurysm (AAA) in the Japanese population, a total of 183 patients who had EVAR at eight medical centers of the National Hospital Organization were retrospectively reviewed and registered. The mean number of registered cases in each center was 23 ± 17 (4–50 cases). Patient characteristics were male sex, 84%; mean age, 77 years; age ? 80 years, ...

Handa, Nobuhiro; Onohara, Toshihiro; Akaiwa, Keiichi; Kei, Jyunichi; Okamoto, Minoru; Yamamoto, Tsuyoshi; Shimoe, Yasushi; Nakai, Mikizou; Okada, Masahiro; Takahashi, Toshiki; Suhara, Hitoshi; Kasashima, Fuminari; Endo, Masamitsu; Nishina, Takeshi; Furuyama, Tadashi

2011-01-01

130

Two-stage Surgery for Endovascular Repair and Laparoscopic Colectomy for a Patient with Abdominal Aortic Aneurysm and Concomitant Colon Cancer: Report of a Case  

OpenAIRE

Surgical management of abdominal aortic aneurysm (AAA) with concomitant malignancy remains controversial. Commercial availability of a stentgraft may change the treatment strategy for such patients. We present a case of AAA with concomitant colon cancer, in which two-stage surgery consisting of EVAR and subsequent laparoscopic colectomy was performed with an interval of six days. The patient’s postoperative course was uneventful. For high-risk patients, application of endovascular AAA repai...

Tanaka, Hiroki; Unno, Naoki; Nakamura, Toshio; Kurachi, Kiyotaka; Yamamoto, Naoto; Inuzuka, Kazunori; Sagara, Daisuke; Suzuki, Minoru; Nishiyama, Motohiro; Konno, Hiroyuki

2009-01-01

131

Successful image-guided percutaneous embolization of a ruptured abdominal aortic aneurysm sac due to type II endoleak after endovascular repair.  

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The rupture of an aneurysm sac secondary to endoleak type II after endovascular abdominal aortic aneurysm repair is a rare occurrence, routinely corrected by open surgery. Computed tomography (CT)-guided percutaneous embolization of the aneurysm sac is a safe, efficient, and minimally invasive treatment option. We present a case of an endoleak type II associated to aneurysm sac rupture successfully treated by CT-guided percutaneous embolization of the aneurysm sac. PMID:25463347

Wolosker, Nelson; Varella, Andrea Yasbek Monteiro; Teivelis, Marcelo Passos; Mendes, Cynthia de Almeida; Garcia, Rodrigo Gobbo; Pfeferman, Elcio

2015-02-01

132

Is endovascular repair of ruptured abdominal aortic aneurysms associated with improved in-hospital mortality compared with surgical repair?  

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A best evidence topic in vascular surgery was constructed according to a structured protocol. The question addressed was whether patients with ruptured abdominal aortic aneurysm (AAA) treated with endovascular aneurysm repair (EVAR) have improved in-hospital outcomes compared with conventional surgical repair. The reported search retrieved 1398 reports, of which 6 papers were thought to represent the best available evidence to answer the study question. Three randomized trials were identified. The first was a pilot trial conducted in a single centre in the UK, which recruited 32 patients and found similar 30-day mortality in the patient groups. The second trial, conducted in Netherlands, recruited 116 patients anatomically suitable for EVAR. This trial found no significant difference in the composite of death and severe complications within 30 days of intervention between patients subjected to EVAR and those undergoing open repair (42 vs 47%; absolute risk reduction 5.4%, 95% confidence interval: -13% to +23%). The IMPROVE trial, based on a pragmatic design, demonstrated similar 30-day mortality in the 613 patients randomized to endovascular strategy or open repair (35.4 vs 37.4%, P = 0.62). The average hospital costs within the first 30 days of randomization were similar between the randomized groups, with an incremental cost-saving for the endovascular strategy vs open repair of £1186. Meta-analysis of all three randomized trials in a Cochrane review found no difference in 30-day or in-hospital mortality between EVAR and open repair (odds ratio: 0.91, 95% confidence interval: 0.67-1.22; P = 0.52). In contrast, a systematic review and meta-analysis, mainly of observational, cohort studies, and another large, nationwide study demonstrated EVAR to be associated with improved in-hospital results compared with open repair, as expressed by mortality, severe complications, length of hospital stay and proportion of patients discharged home. Even though randomized trials demonstrate equivalent in-hospital mortality with EVAR and open repair, large-scale, nationwide, observational studies and meta-analyses have shown EVAR to confer improved in-hospital mortality and morbidity in patients with favourable aneurysm morphology stable enough to undergo imaging. Reconfiguration of acute aortic services and establishment of standardized institutional protocols might be advisable for improvements in the management of ruptured AAA. PMID:25281705

Antoniou, George A; Ahmed, Naseer; Georgiadis, George S; Torella, Francesco

2015-01-01

133

Cirugía abierta versus cirugía endovascular en el tratamiento de la patología de la aorta torácica descendente  

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Full Text Available Introducción: El reparo endovascular de la aorta torácica (REVAT se ha incrementado en el mundo en los últimos años con relación al abierto. Objetivo: Comparar los resultados clínicos del REVAT frente al reparo abierto en la Fundación Cardio Infantil (Bogotá, Colombia entre 2002 y 2011. Metodología: Análisis retrospectivo de la cohorte de pacientes sometidos a reparo abierto (grupo 1 en comparación de REVAT (grupo 2. En cada uno de los grupos se evaluó tiempo quirúrgico, tasa de morbilidad, mortalidad, reintervención y estancia hospitalaria. Resultados: Se incluyeron 57 pacientes en el análisis (26 % reparo abierto; 74 % REVAT. Se reintervinieron dos pacientes por endofugas tipo 1 en el grupo 2 y un caso por sangrado en el grupo 1. La mortalidad operatoria fue para el grupo 1 de 20 %, y para el grupo 2, de 2,3 %. El tiempo quirúrgico fue de 398 ± 180 min (grupo 1 versus 85,5 ± 35 min (grupo 2 (p = 0,0001 y el tiempo de estancia hospitalaria promedio fue de 9,8 días (grupo 1 y 5,3 días (grupo 2 [p = 0,01]. El tiempo promedio de seguimiento fue 4,8 ± 3,1 años. Conclusiones: El REVAT parece ofrecer menor morbilidad, mortalidad, tiempo quirúrgico y estancia hospitalaria respecto al reparo abierto, aunque las poblaciones de pacientes incluidos no fueron estrictamente comparables. Se requieren nuevos análisis en un diseño prospectivo, idealmente aleatorizado para documentar los beneficios a largo plazo de este tipo de reparo.

Mauricio Pel\\u00E1ez

2012-01-01

134

Prospective, intraindividual comparison of MRI versus MDCT for endoleak detection after endovascular repair of abdominal aortic aneurysms  

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This study compares MRI and MDCT for endoleak detection after endovascular repair of abdominal aortic aneurysms (EVAR). Forty-three patients with previous EVAR underwent both MRI (2D T1-FFE unenhanced and contrast-enhanced; 3D triphasic contrast-enhanced) and 16-slice MDCT (unenhanced and biphasic contrast-enhanced) within 1 week of each other for endoleak detection. MRI was performed by using a high-relaxivity contrast medium (gadobenate dimeglumine, MultiHance registered). Two blinded, independent observers evaluated MRI and MDCT separately. Consensus reading of MRI and MDCT studies was defined as reference standard. Sensitivity, specificity, and accuracy were calculated and Cohen's k statistics were used to estimate agreement between readers. Twenty endoleaks were detected in 18 patients at consensus reading (12 type II and 8 indeterminate endoleaks). Sensitivity, specificity, and accuracy for endoleak detection were 100%, 92%, and 96%, respectively, for reader 1 (95%, 81%, 87% for reader 2) for MRI and 55%, 100%, and 80% for reader 1 (60%, 100%, 82% for reader 2) for MDCT. Interobserver agreement was excellent for MDCT (k = 0.96) and good for MRI (k = 0.81). MRI with the use of a high-relaxivity contrast agent is significantly superior in the detection of endoleaks after EVAR compared with MDCT. MRI may therefore become the preferred technique for patient follow-up after EVAR. (orig.)

Alerci, Mario; Wyttenbach, Rolf [Ospedale San Giovanni Bellinzona (EOC), Department of Radiology, Bellinzona (Switzerland); Oberson, Michel; Gallino, Augusto [Ospedale San Giovanni Bellinzona (EOC), Department of Cardiology, Bellinzona (Switzerland); Fogliata, Antonella [Ospedale San Giovanni Bellinzona (EOC), Department of Medical Physics, Bellinzona (Switzerland); Vock, Peter [Inselspital, University of Berne, Department of Radiology, Berne (Switzerland)

2009-05-15

135

Abdominal aorta morphometric study for endovascular treatment of aortic aneurysms: comparison between spiral CT and angiography  

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Full Text Available PURPOSE: To compare the computed tomography and angiography study of abdominal aortic aneurysms for posterior endograft implant. METHOD: From June 1997 to March 2001, 113 patients with abdominal aortic aneurysm were submitted to study of the aorto-iliac axis with abdominal spiral computed tomography and angiography with calibrated catheter. The patient's ages ranged from 51 and 88 years (mean: 69. There were 104 males and nine females. RESULTS: When comparing the mean computed tomography and angiography diameters, we observed that there was a statistical difference for the infra-renal neck (p0.05. When comparing the mean lengths, we observed that there was a statistical difference for the aortic infra-renal neck (p<0.05, for the distance between the renal artery and the aortic bifurcation (p<0.05 and for the common iliac artery lengths (p<0.05. There was also a statistical difference for the length between the renal artery and the internal iliac artery (p<0.05. CONCLUSIONS: In the AAA pre-procedure imaging study there were statistical differences between the computed tomography and angiographic measurement studies. We believe that computed tomography is a superior method for the evaluation of diameters and the angiography with a calibrated catheter for the length evaluation. We conclude, that both methods are complementary and must be undertaken for accurate evaluation of all candidates for aortic endograft implant.

Espinosa Gaudencio

2002-01-01

136

Abdominal aorta morphometric study for endovascular treatment of aortic aneurysms: comparison between spiral CT and angiography  

International Nuclear Information System (INIS)

Purpose: To compare the computed tomography and angiography study of abdominal aortic aneurysms for posterior endograft implant. Method: From June 1997 to March 2001, 113 patients with abdominal aortic aneurysm were submitted to study of the aorto-iliac axis with abdominal spiral computed tomography and angiography with calibrated catheter. The patient's ages ranged from 51 and 88 years (mean: 69). There were 104 males and nine females. Results: When comparing the mean computed tomography and angiography diameters, we observed that there was a statistical difference for the infra-renal neck (p0.05). When comparing the mean lengths, we observed that there was a statistical difference for the aortic infra-renal neck (p<0.05), for the distance between the renal artery and the aortic bifurcation (p<0.05) and for the common iliac artery lengths (p<0.05). There was also a statistical difference for the length between the renal artery and the internal iliac artery (p<0.05). Conclusions: In the AAA pre-procedure imaging study there were statistical differences between the computed tomography and angiographic measurement studies. We believe that computed tomography is a superior method for the evaluation of diameters and the angiography with a calibrated catheter for the length evaluation. We conclude, that both methods are complementary and must be und methods are complementary and must be undertaken for accurate evaluation of all candidates for aortic endograft implant. (author)

137

Multislice CT Angiography of Fenestrated Endovascular Stent Grafting for Treating Abdominal Aortic Aneurysms: a Pictorial Review of the 2D/3D Visualizations  

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Fenestrated endovascular repair of an abdominal aortic aneurysm has been developed to treat patients with a short or complicated aneurysm neck. Fenestration involves creating an opening in the graft fabric to accommodate the orifice of the vessel that is targeted for preservation. Fixation of the fenestration to the renal arteries and the other visceral arteries can be done by implanting bare or covered stents across the graft-artery ostia interfaces so that a portion of the stent protrudes into the aortic lumen. Accurate alignment of the targeted vessels in a longitudinal aspect is hard to achieve during stent deployment because rotation of the stent graft may take place during delivery from the sheath. Understanding the 3D relationship of the aortic branches and the fenestrated vessel stents following fenestration will aid endovascular specialists to evaluate how the stent graft is situated within the aorta after placement of fenestrations. The aim of this article is to provide the 2D and 3D imaging appearances of the fenestrated endovascular grafts that were implanted in a group of patients with abdominal aortic aneurysms, based on the multislice CT angiography. The potential applications of each visualization technique were explored and compared with the 2D axial images

Sun, Zhonghua [Curtin University, Perth (Australia); Mwipatayi, Bibombe P [Royal Perth Hospital, Perth (Australia); Allen, Yvonne B; Hartley, David E [Cook R and D, Perth (Australia); Lawrence-Brown, Michael M [Curtin University of Technology, Perth (Australia)

2009-06-15

138

Multislice CT Angiography of Fenestrated Endovascular Stent Grafting for Treating Abdominal Aortic Aneurysms: a Pictorial Review of the 2D/3D Visualizations  

International Nuclear Information System (INIS)

Fenestrated endovascular repair of an abdominal aortic aneurysm has been developed to treat patients with a short or complicated aneurysm neck. Fenestration involves creating an opening in the graft fabric to accommodate the orifice of the vessel that is targeted for preservation. Fixation of the fenestration to the renal arteries and the other visceral arteries can be done by implanting bare or covered stents across the graft-artery ostia interfaces so that a portion of the stent protrudes into the aortic lumen. Accurate alignment of the targeted vessels in a longitudinal aspect is hard to achieve during stent deployment because rotation of the stent graft may take place during delivery from the sheath. Understanding the 3D relationship of the aortic branches and the fenestrated vessel stents following fenestration will aid endovascular specialists to evaluate how the stent graft is situated within the aorta after placement of fenestrations. The aim of this article is to provide the 2D and 3D imaging appearances of the fenestrated endovascular grafts that were implanted in a group of patients with abdominal aortic aneurysms, based on the multislice CT angiography. The potential applications of each visualization technique were explored and compared with the 2D axial images

139

Outcomes of Endovascular Abdominal Aortic Aneurysm Repair in Patients with Hostile Neck Anatomy  

International Nuclear Information System (INIS)

Purpose. The principal anatomic contraindication to endovascular aneurysm repair (EVR) is an unfavorable proximal aortic neck. With increasing experience, a greater proportion of patients with unfavorable neck anatomy are being offered EVR. This study aimed to evaluate outcomes in patients with challenging proximal aortic neck anatomy. Methods. Prospectively collected data from 147 consecutive patients who underwent EVR between December 1997 and April 2005 were supplemented with a retrospective review of medical records and radiological images. Unfavorable anatomic features were defined as neck diameter >28 mm, angulation >60 deg., circumferential thrombus >50%, and length 30 days) (p = 0.57), distal type I endoleak (p = 0.40), type III endoleak (p 0.51), secondary interventions (p = 1.0), aneurysm sac expansion (p = 0.44), or 30 day mortality (p = 0.70). The good neck group had a significantly increased incidence of type II endoleak (p = 0.023). By multivariate analysis, the incidence of intraoperative adjunctive procedures was signifoperative adjunctive procedures was significantly increased in the presence of severe angulation (p = 0.041, OR 3.08, 95% CI 1.05-9.04). Conclusion. Patients with severely hostile proximal aortic neck anatomy may be treated with EVR, although severely angulated necks require additional intraoperative procedures. Early outcomes are encouraging and suggest that indications for EVR may be expanded to include patients with hostile neck anatomy

140

Mortalidade relacionada ao tratamento endovascular do aneurisma da aorta abdominal com o uso dos modelos revisados / Procedure-related mortality of endovascular abdominal aortic aneurysm repair using revised reporting standards  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Languages: English, Portuguese Abstract in portuguese OBJETIVO: O objetivo do estudo foi avaliar a definição da mortalidade relacionada ao procedimento após tratamento endovascular do aneurisma de aorta abdominal (EVAR) como definido pelo Committee for Standardized Reporting Practices in Vascular Surgery. MÉTODO: Dados de pacientes com aneurisma de aor [...] ta abdominal foram analisados do banco de dados EUROSTAR. Os pacientes foram submetidos ao EVAR entre junho de 1996 a fevereiro de 2004 e foram estudados retrospectivamente. A probabilidade explicita da causa de morte foi registrada. O intervalo entre a operação, alta hospitalar ou intervenção secundária até a morte foi registrado. RESULTADOS: De um total de 5612 pacientes, 589 (10,5%) faleceram após o EVAR em acompanhamento total e qualquer causa de morte foi inclusa. Cento e quarenta e um pacientes (12,5%) morreram devido a causa relacionada ao aneurisma, sendo que 28 (4,8%) foram rupturas, 25 (4,2%) infecções do implante e 88 (14,9%) foram pacientes que morreram num prazo de 30 dias após o procedimento inicial (definição atualmente utilizada, também conhecido como resultado clínico a curto prazo). Além disso, 25 pacientes faleceram após 30 dias, mas continuavam ainda hospitalizados (ou transferidos a home-care para reavaliação posterior, ou necessitaram intervenção secundária). Levando em conta a duração da admissão ao hospital e a mortalidade imediata após o procedimento relacionada a intervenções secundárias, 49 mortes tardias também podem ser relacionadas ao EVAR. CONCLUSÃO: Morte tardia compõe uma proporção considerável da mortalidade relacionada ao EVAR dentro do tempo de análise revisado. Abstract in english OBJECTIVE: The aim of this study was to evaluate the definition of Procedure-related mortality after endovascular aneurysm repair (EVAR) as defined by the Committee for Standardized Reporting Practices in Vascular Surgery. METHODS: Data on patients with an AAA were taken from the EUROSTAR database. [...] The patients underwent EVAR between June 1996 and February 2004 and were analyzed retrospectively. Explicit probability of cause of death was recorded. The time interval from operation, hospital discharge or second interventions till death was recorded. RESULTS: A total of 589 out of 5612 patients (10.5%) died after EVAR in total follow up and all causes of death were included. 141 (2.5%) patients died due to aneurysms reported after the EVAR procedure of which 28 (4.8%) were ruptures, 25 (4.2%) graft-infections and 88 (14.9%) patients who died within 30 days after the initial procedure (present definition, also known as short term clinical outcome). In addition 25 patients died after 30 days, but were then (at moment of death) still in the hospital, or were transferred to a nursing home for further re-evaluation, or needed second interventions. Taking into account the duration of hospitalization and mortality immediately after procedure-related second interventions, 49 delayed deaths might also be regarded as being EVAR procedure-related. CONCLUSION: Delayed deaths are a considerable proportion of procedure-related deaths after EVAR within the revised time frame.

Gosen Gabriel, Konig; S.R., Vallabhneni; Corinne J. Van, Marrewijk; Lina J., Leurs; Robert J.F., Laheij; Jacob, Buth.

2007-03-01

141

Mortalidade relacionada ao tratamento endovascular do aneurisma da aorta abdominal com o uso dos modelos revisados Procedure-related mortality of endovascular abdominal aortic aneurysm repair using revised reporting standards  

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Full Text Available OBJETIVO: O objetivo do estudo foi avaliar a definição da mortalidade relacionada ao procedimento após tratamento endovascular do aneurisma de aorta abdominal (EVAR como definido pelo Committee for Standardized Reporting Practices in Vascular Surgery. MÉTODO: Dados de pacientes com aneurisma de aorta abdominal foram analisados do banco de dados EUROSTAR. Os pacientes foram submetidos ao EVAR entre junho de 1996 a fevereiro de 2004 e foram estudados retrospectivamente. A probabilidade explicita da causa de morte foi registrada. O intervalo entre a operação, alta hospitalar ou intervenção secundária até a morte foi registrado. RESULTADOS: De um total de 5612 pacientes, 589 (10,5% faleceram após o EVAR em acompanhamento total e qualquer causa de morte foi inclusa. Cento e quarenta e um pacientes (12,5% morreram devido a causa relacionada ao aneurisma, sendo que 28 (4,8% foram rupturas, 25 (4,2% infecções do implante e 88 (14,9% foram pacientes que morreram num prazo de 30 dias após o procedimento inicial (definição atualmente utilizada, também conhecido como resultado clínico a curto prazo. Além disso, 25 pacientes faleceram após 30 dias, mas continuavam ainda hospitalizados (ou transferidos a home-care para reavaliação posterior, ou necessitaram intervenção secundária. Levando em conta a duração da admissão ao hospital e a mortalidade imediata após o procedimento relacionada a intervenções secundárias, 49 mortes tardias também podem ser relacionadas ao EVAR. CONCLUSÃO: Morte tardia compõe uma proporção considerável da mortalidade relacionada ao EVAR dentro do tempo de análise revisado.OBJECTIVE: The aim of this study was to evaluate the definition of Procedure-related mortality after endovascular aneurysm repair (EVAR as defined by the Committee for Standardized Reporting Practices in Vascular Surgery. METHODS: Data on patients with an AAA were taken from the EUROSTAR database. The patients underwent EVAR between June 1996 and February 2004 and were analyzed retrospectively. Explicit probability of cause of death was recorded. The time interval from operation, hospital discharge or second interventions till death was recorded. RESULTS: A total of 589 out of 5612 patients (10.5% died after EVAR in total follow up and all causes of death were included. 141 (2.5% patients died due to aneurysms reported after the EVAR procedure of which 28 (4.8% were ruptures, 25 (4.2% graft-infections and 88 (14.9% patients who died within 30 days after the initial procedure (present definition, also known as short term clinical outcome. In addition 25 patients died after 30 days, but were then (at moment of death still in the hospital, or were transferred to a nursing home for further re-evaluation, or needed second interventions. Taking into account the duration of hospitalization and mortality immediately after procedure-related second interventions, 49 delayed deaths might also be regarded as being EVAR procedure-related. CONCLUSION: Delayed deaths are a considerable proportion of procedure-related deaths after EVAR within the revised time frame.

Gosen Gabriel Konig

2007-03-01

142

Classification and treatment of endoleaks after endovascular treatment of abdominal aortic aneurysms; Klassifikation und Therapie von Endolecks nach endovaskulaerer Behandlung von abdominellen Aortenaneurysmen  

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This article describes the classification of endoleaks after endovascular treatment of abdominal aortic aneurysms, thereby summarizing the most important problems of this endovascular technique. The correct classification of endoleaks is a prerequisite for interdisciplinary discussion. It is indispensable for professional reporting of the pathological findings and for the decision making as to the adequate treatment of endoleaks. Irrespective of the types of stent graft and property of the material, five endoleak types are defined in the literature: leakage at the anchor sites (type I); leakage due to collateral arteries (type II); defective stent grafts (type III); leakage due to porosity of the graft material (type IV); and endotension (type V). The causes of endoleaks are discussed and treatment options are reviewed for the diverse pathologic findings. (orig.)

Pitton, M.B.; Thelen, M. [Klinik fuer Radiologie, Univ. Mainz (Germany); Schmiedt, W.; Neufang, A. [Klinik fuer Herz-, Thorax- und Gefaesschirurgie, Univ. Mainz (Germany); Dueber, C. [Inst. fuer Klinische Radiologie, Universitaetsklinikum Mannheim (Germany)

2005-01-01

143

Intraoperative DynaCT Detection and Immediate Correction of a Type 1a Endoleak Following Endovascular Repair of Abdominal Aortic Aneurysm  

International Nuclear Information System (INIS)

Reintervention following endovascular aneurysm repair (EVAR) is required in up to 10% of patients at 30 days and is associated with a demonstrable risk of increased mortality. Completion angiography cannot detect all graft-related anomalies and computed tomographic angiography is therefore mandatory to ensure clinical success. Intraoperative angiographic computed tomography (DynaCT; Siemens, Germany) utilizes cone beam reconstruction software and flat-panel detectors to generate CT-like images from rotational angiographic acquisitions. We report the intraoperative use of this novel technology in detecting and immediately treating a proximal anterior type Ia endoleak, following an endovascular abdominal aortic repair, which was not seen on completion angiography. Immediate evaluation of cross-sectional imaging following endograft deployment may allow for on-table correction of clinically significant stent-related complications. This should both improve technical success and minimize the need for early secondary intervention following EVAR.

144

Chronic Contained Rupture of an Abdominal Aortic Aneurysm: From Diagnosis to Endovascular Resolution  

International Nuclear Information System (INIS)

A male patient, 69 years old, presented with fever, leucocytosis, and persistent low back pain; he also had an abdominal aortic aneurysm (AAA), as previously diagnosed by Doppler UltraSound (US), and was admitted to our hospital. On multislice computed tomography (msCT), a large abdominal mass having no definite border and involving the aorta and both of the psoas muscles was seen. This mass involved the forth-lumbar vertebra with lysis, thus simulating AAA rupture into a paraspinal collection; it was initially considered a paraspinal abscess. After magnetic resonance imaging examination and culture of the fluid aspirated from the mass, no infective organisms were found; therefore, a diagnosisof chronically contained AAA rupture was made, and an aortic endoprosthesis was subsequently implanted. The patient was discharged with decreased lumbar pain. At 12-month follow-up, no evidence of leakage was observed. To our knowledge, this is the first case of endoprosthesis implantation in a patient, who was a poor candidate for surgical intervention due to renal failure, leucocytosis and high fever, having a chronically contained AAA ruptured simulatingspodilodiscitis abscess. Appropriate diagnosis and therapy resolved potentially crippling pathology and avoided surgical graft-related complications.

145

Transección traumática aguda de la aorta torácica: Tratamiento endovascular Endovascular treatment of acute traumatic rupture of the thoracic aorta: Report of one case  

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Full Text Available Traumatic rupture of the aorta has a near 80% mortality. Most patients die on the site of the accident. Conventional surgical repair of these lesions has a high morbidity and mortality, generally associated to the severity of associated lesions. Over the last decade, endovascular treatment has become an effective therapeutic alternative. We report a 40 years old male, that suffered a traumatic rupture of the descending thoracic aorta in a car accident. A successful endovascular repair was performed, installing an endoprothesis on the site of the lesion, using a femoral artery approach. The patient had a good postoperative evolution and was discharged from the hospital once complete rehabilitation of his associated lesions was obtained (Rev Méd Chile 2003; 131: 309-13.

Nelson Sepúlveda Sch

2003-03-01

146

Early inflammatory response following elective abdominal aortic aneurysm repair: A comparison between endovascular procedure and conventional, open surgery  

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Full Text Available Background/Aim. Abdominal aorta aneurysm (AAA represents a pathological enlargment of infrarenal portion of aorta for over 50% of its lumen. The only treatment of AAA is a surgical reconstruction of the affected segment. Until the late XX century, surgical reconstruction implied explicit, open repair (OR of AAA, which was accompanied by a significant morbidity and mortality of the treated patients. Development of endovascular repair of (EVAR AAA, especially in the last decade, offered another possibility of surgical reconstruction of AAA. The preliminary results of world studies show that complications of such a procedure, as well as morbidity and mortality of patients, are significantly lower than with OR of AAA. The aim of this paper was to present results of comparative clinical prospective study of early inflammatory response after reconstruction of AAA between endovascular and open, conventional surgical technique. Methods. A comparative clinical prospective study included 39 patients, electively operated on for AAA within the period of December 2008 - February 2010, divided into two groups. The group I counted 21 (54% of the patients, 58-87 years old (mean 74.3 years, who had been submited to EVAR by the use of excluder stent graft. The group II consisted of 18 (46% of the patients, 49-82 (mean 66.8 years, operated on using OR technique. All of the treated patients in both groups had AAA larager than 50 mm. The study did not include patients who have been treated as urgent cases, due to the rupture or with simptomatic AAA. Clinical, biochemical and inflamatory parameters in early postoperative period were analyzed, in direct postoperative course (number of leucocytes, thrombocytes, serum circulating levels of cytokine - interleukine (IL-2, IL-4, IL-6 and IL-10. Parameters were monitored on the zero, first, second, third and seventh postoperative days. The study was approved by the Ethics Commitee of the Military Medical Academy. Results. The study showed a statistically significantly shorter time of treatment in the EVAR group (average 90 min compared to the OR group (average 136 min. Also, there was a statistically significantly less blood loss in the patients operated on by the use of EVAR surgery (average 60 mL as compared to the patients treated with OR techinique (average 495 mL, as well as a shorter postoperative hospitalization of patients in the EVAR group (average 4 days compared to the OR group (average 8 days. The OR group was detected with a statistically significant increase of leucocytes and statistically significant fall of the number of thrombocytes in comparison with the EVAR group in all the investigated terms. A significant concentration rise of IL-2 in the OR group and concentration rise of IL-6 in the EVAR group was shown 24 hours after the procedure, whereas on the second postoperative day there was detected a significant fall of IL-6 in the EVAR group. IL-4 concentration in the OR group was significantly higher as of the third postoperative day in comparison to the EVAR group. There was no significant difference in IL-10 concentration between the groups. Conclusion. The EVAR techinique is a safer and less invasive and less traumatic procedure for patients than the OR of AAA. Following the EVAR, there are less inflammatory reactions in the early postoperative periodas compared to the OR and therefore less possibility of the development of systemic inflammatory respons syndrome in patients treated.

Marjanovi? Ivan

2011-01-01

147

Síndrome de la vena cava superior en el posoperatorio inmediato de trasplante cardíaco: tratamiento endovascular / Endovascular Treatment of Superior Vena Cava Syndrome in the Immediate Postoperative Period of Heart Transplantation  

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: Spanish Abstract in spanish El trasplante cardíaco está indicado en pacientes con insuficiencia cardíaca terminal sin opción de tratamiento médico, intervencionista o quirúrgico y puede realizarse utilizando fundamentalmente tres variantes técnicas. El beneficio de la técnica bicava en términos de parámetros hemodinámicos y cl [...] ínicos la ha convertido en la más utilizada, aunque es técnicamente más demandante y puede tener algunas consecuencias, como estenosis en las anastomosis de las venas cavas. En esta presentación se describe el caso de un paciente sometido a trasplante cardíaco ortotópico con técnica bicava que en el primer día del posoperatorio desarrolló el síndrome de la vena cava superior. Durante el segundo día posoperatorio y ante sintomatología progresiva, a pesar de haberse administrado anticoagulación, se decidió realizar una flebografía diagnóstica y al mismo tiempo tratamiento endovascular. En ese procedimiento se recanalizó la vena cava superior y se implantaron tres stents autoexpandibles, con lo que se logró permeabilidad de la anastomosis entre las venas cavas donante y receptora, la vena cava superior y la subclavia derecha. La evolución fue favorable con alivio inmediato de la sintomatología. El paciente fue dado de alta sin complicaciones.

Ricardo G, Marenchino; Román D, Rostagno; César A, Belziti; Héctor D, Albornoz; Alberto, Domenech; Norberto, Vulcano; Ricardo D, García Mónaco; Roberto R, Batelini.

2011-10-01

148

Tratamento endovascular dos aneurismas da aorta abdominal com anatomia complexa: resultados preliminares com a segunda geração de endoprótese com arcabouço metálico circular / Endovascular treatment of abdominal aortic aneurysms with complex anatomy: preliminary results of the second generation stent graft with a dual-ring design  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Languages: English, Portuguese Abstract in portuguese INTRODUÇÃO: O tratamento endovascular dos aneurismas da aorta abdominal tem revolucionado o tratamento dessa afecção, em decorrência das baixas taxas de morbidade e mortalidade. Apesar dos avanços tecnológicos ocorridos nas endopróteses, ainda existem limitações anatômicas para o emprego da técnica. [...] Este estudo teve por objetivo avaliar os resultados imediatos do tratamento de pacientes portadores de aneurisma da aorta abdominal com anatomia complexa com uma endoprótese de segunda geração. MÉTODOS: Estudo observacional, prospectivo, não-randomizado, realizado em um único centro, em uma série de pacientes submetidos a tratamento endovascular de aneurismas da aorta abdominal infrarrenais complexos, com prótese com arcabouço metálico disposta em anéis (Anaconda™ - Vascutek, Terumo, Inchinnan, Escócia). Foram avaliados as características clínicas e angiográficas, o sucesso técnico, o sucesso terapêutico, a morbidade e a mortalidade, e a taxa de reintervenção perioperatória. RESULTADOS: Foram analisados, no período de fevereiro de 2010 a dezembro de 2011, 108 pacientes consecutivos portadores de aneurisma da aorta, dos quais 16 eram portadores de aneurisma da aorta abdominal com anatomia complexa tratados com a prótese Anaconda™. A média de idade foi de 76 + 7 anos e 75% eram do sexo masculino. Houve sucesso técnico em 94% e êxito terapêutico em 75% dos casos. Ocorreu um óbito no pós-operatório. As complicações perioperatórias mais prevalentes foram sangramento da ferida operatória (2/16) e embolia periférica (2/16). Foram necessárias reintervenções em 12,5% dos pacientes durante o seguimento. CONCLUSÕES: Neste estudo, a segunda geração da endoprótese Anaconda™ foi efetiva e apresenta resultados imediatos satisfatórios no tratamento do aneurisma da aorta abdominal infrarrenal de anatomia complexa. Abstract in english BACKGROUND: Endovascular treatment has revolutionized the therapeutic approach to abdominal aortic aneurysms due to its low morbidity and mortality rates. Despite the technological advances, there still are anatomical limitations on the use of stent grafts. This study aimed to evaluate the immediate [...] clinical results in patients with complex abdominal aortic aneurysms treated with a second generation stent graft. METHODS: This is an observational, prospective, non-randomized, single-center study in a series of patients undergoing endovascular repair of complex infra-renal abdominal aortic aneurysms, using a stent graft with a dual-ring stent design (Anaconda™ - Vascutek, Terumo, Inchinnan, Scotland). Clinical and angiographic characteristics, technical and therapeutic success rates, morbidity and mortality and perioperative reintervention rates were evaluated. RESULTS: Between February 2010 and December 2011, 108 consecutive patients with aortic aneurysms were treated, of whom 16 had complex abdominal aortic aneurysms, treated with the Anaconda™ AAA Stent Graft System. Mean age was 76 + 7 years and 75% were males. Technical success was observed in 94% and therapeutic success in 75% of cases. There was one postoperative death. The most prevalent perioperative complication was surgical wound bleeding (2/16) and peripheral embolism (2/16). Reinterventions were required in 12.5% of the patients during follow-up. CONCLUSIONS: In this study, the second-generation Anaconda™ Stent Graft System was effective and provided satisfactory immediate results in the treatment of complex infra-renal abdominal aortic aneurysms.

Patrick Bastos, Metzger; Eduardo Rafael, Novero; Fabio Henrique, Rossi; Samuel Martins, Moreira; Heraldo Antônio, Barbato; Nilo Mitsuru, Izukawa; Vanessa Luciene Abreu de, Marco; Manoel Nicolas, Cano; Antonio Massamitsu, Kambara.

2012-03-01

149

Adherencias abdominales postquirúrgicas en equinos: patofisiología, prevención y tratamiento / Post-surgical abdominal adhesions in horses: pathophysiology, prevention and treatment  

Scientific Electronic Library Online (English)

Full Text Available A pesar del gran número de investigaciones realizadas tanto en medicina humana como en medicina veterinaria, las adherencias intraabdominales continúan siendo una complicación para los cirujanos en la actualidad. El desarrollo de adherencias intraabdominales es un proceso dinámico y complejo que inv [...] olucra una serie de eventos que comienzan con un proceso inflamatorio y daño tisular, seguido de desbalances en los procesos de fibrinogénesis y fibrinólisis, terminando con la conversión de fibrina a tejido fibroso. En cirugías de intestino delgado en equinos, la incidencia de adherencias va de 14 a 22%, siendo la causa más común de dolor abdominal recurrente y la segunda causa de celiotomías repetidas. Sin embargo, al incluir todas las causas de cirugías abdominales, en esta especie la incidencia de adherencias es de aproximadamente un 5%. El mayor conocimiento del mecanismo celular de la formación y reformación de adherencias debe llevar a reducir su incidencia. Actualmente, existen una serie de métodos de prevención y tratamientos destinados a disminuir o evitar la aparición de adherencias intraabdominales. El objetivo de esta revisión bibliográfica fue el de recopilar la mayor información disponible e investigaciones que expliquen de mejor manera la fisiopatología, prevención y tratamiento de la formación de adherencias intraabdominales. Abstract in english Despite the great number of human and veterinary medicine research, abdominal adhesions are still a big concern and a frequent complication for surgeons. The development of abdominal adhesions is a complex and dynamic process that involves a series of different mechanisms that start with an inflamma [...] tory process and tissue damage, followed by a fibrinogenic and fibrinolytic unbalance and ends with a change from fibrin deposit to fibrous tissue. In horses, after small intestine surgeries, adhesion incidence ranges from 14 to 22%. It is the most frequent cause of recurrent abdominal pain and the second cause for repeat celiotomy. Nevertheless, when all equine abdominal surgeries are included, the incidence of postoperative adhesions approximates 5%. A better understanding of the cellular mechanisms of adhesion formation and reformation should help to develop better prevention methods. Currently, a variety of prevention measures and treatments, most of them aiming to reduce or avoid adhesions formation, are used in veterinary medicine. The aim of this review is to gather most of the available information and the latest research explaining the pathophysiology, prevention and treatment of abdominal adhesions in horses.

M, Werner; JS, Galecio; H, Bustamante.

150

A technique for increased accuracy in the placement of the "giant" Palmaz stent for treatment of type IA endoleak after endovascular abdominal aneurysm repair.  

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We report a deployment technique that eliminates "watermelon seeding" of the "giant" Palmaz stent in the treatment of type IA endoleak after endovascular abdominal aneurysm repair. A 5010 Palmaz stent (Cordis Corp, Miami Lakes, Fla) is asymmetrically hand-crimped on an appropriately sized valvuloplasty balloon that assures that the proximal (cranial) aspect will deploy first. A long 16 to 20F sheath is placed distal to the target area. Once the balloon and stent assembly is in position, the sheath is partially retracted to allow only the proximal (cranial) half of the balloon to expand, flaring the unsheathed proximal stent. The expanded proximal balloon prevents cranial stent migration. The sheath prevents distal (caudal) stent migration. Full retraction of the sheath allows the distal balloon and stent to expand, completing the stent deployment. PMID:18727977

Kim, Jason K; Noll, Robert E; Tonnessen, Britt H; Sternbergh, W Charles

2008-09-01

151

Correção endovascular de aneurisma de aorta abdominal e artéria ilíaca comum esquerda em paciente com hemofilia C grave / Endovascular repair of abdominal aortic aneurysm and left common iliac artery in a patient with severe hemophilia C  

Scientific Electronic Library Online (English)

Full Text Available A deficiência do fator XI, também conhecida como hemofilia C, é uma doença hematológica hereditária rara, que se manifesta clinicamente com hemorragia persistente após cirurgias, traumas, menorragias e extrações dentárias. Neste artigo, relatou-se a correção endovascular de um paciente com aneurisma [...] de aorta e de artéria ilíaca comum esquerda em um paciente portador de deficiência major do fator XI (atividade do fator XI inferior a 20%). O procedimento foi realizado com sucesso, com o manuseio do distúrbio da coagulação por meio da infusão de plasma fresco no pré-operatório imediato e no pós-operatório, e controle laboratorial da coagulação do paciente. Abstract in english Factor XI deficiency, also known as hemophilia C, is a rare hereditary blood disease that manifests with persistent bleeding after surgery, trauma, menorrhagia, and dental extractions. This article reports an endovascular repair of a patient diagnosed with an aortic and left common iliac aneurysm, w [...] ith severe factor XI deficiency (factor XI activity below 20%). The procedure was successfully performed with management of the coagulation disorder by preoperative and postoperative infusion of plasma and laboratory control of the coagulation.

Sergio Quilici, Belczak; Igor Rafael, Sincos; Ricardo, Aun; Boulanger, Mioto Neto; Manoel, Lobato; Fernando, Saliture; Alex, Ledermain.

2012-03-01

152

Contralateral acute lower limb ischaemia following total hip replacement in a patient with an endovascular abdominal aortic aneurysm repair  

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Total hip replacement (THR) is a common procedure to treat patients with a fractured neck of femur. Ipsilateral major vessel injury with acute lower limb ischaemia is a rare but potentially devastating complication. Contralateral acute limb ischaemia is unreported. We present the case of a contralateral, acute lower limb ischaemia following THR for a fractured neck of femur in the presence of an endovascular aortic aneurysm repair (EVAR) and femoro-femoral crossover grafts. We advise early vascular surgery consultation for patients undergoing THR with an EVAR stentgraft in situ to help minimize risks of peri- and postoperative graft occlusion and consequent acute lower limb ischaemia. PMID:25742966

Brookes-Fazakerley, Steven D.; Thorpe, Philippa; Chan, Colin; Jackson, Gillian E.

2015-01-01

153

Contralateral acute lower limb ischaemia following total hip replacement in a patient with an endovascular abdominal aortic aneurysm repair.  

Science.gov (United States)

Total hip replacement (THR) is a common procedure to treat patients with a fractured neck of femur. Ipsilateral major vessel injury with acute lower limb ischaemia is a rare but potentially devastating complication. Contralateral acute limb ischaemia is unreported. We present the case of a contralateral, acute lower limb ischaemia following THR for a fractured neck of femur in the presence of an endovascular aortic aneurysm repair (EVAR) and femoro-femoral crossover grafts. We advise early vascular surgery consultation for patients undergoing THR with an EVAR stentgraft in situ to help minimize risks of peri- and postoperative graft occlusion and consequent acute lower limb ischaemia. PMID:25742966

Brookes-Fazakerley, Steven D; Thorpe, Philippa; Chan, Colin; Jackson, Gillian E

2015-01-01

154

Aneurysmal sizing after endovascular repair in patients with abdominal aortic aneurysm: interobserver variability of various measurement protocols and its clinical relevance  

International Nuclear Information System (INIS)

The aim of this study was to determine the variability of various measurement protocols for measurement of abdominal aortic aneurysm (AAA) and the clinical relevance of variability. Three radiologists performed computed tomographic angiography measurements of both the aorta and the largest portion of the aneurysm on selected axial slices. Then measurements of the largest portion of the aneurysm were performed on unselected axial slices, sagittal and coronal reformatted. Finally, aortic volume was calculated. Measurements and volume calculation were performed before and after endovascular repair and assessed: Part 1: interobserver variability for maximum anteroposterior (MAP) and maximum transverse (MTR) diameters on selected slices; part 2: interobserver variability for unselected slices considering MAP and MTR; part 3: interobserver variability considering maximum diameter in any direction (MAD); part 4: interobserver variability for sagittal (SAG) and coronal (COR) free curved multiplanar reformation (MPR); and part 5: volume calculations. We then determined which technique of measurement was the most clinically relevant for detecting changes in aneurysm size or aortic volume. Parts 1 and 2: interobserver variability was 4.1 mm for both MAP and MTR; part 3: interobserver variability was 7 mm for MAD; part 4: interobserver variability was 5.5 mm (COR) and 4.9 mm (SAG); part 5: interobserver variability for volume was 5.5 ml. A combination of MAP and MTR was the most A combination of MAP and MTR was the most useful for detecting aortic modification. Volume calculation was needed in only a few cases. We recommend avoiding MAD and MPR measurements and suggest instead measuring both maximum anteroposterior and maximum transverse diameters. If aneurysm size remains stable after endovascular repair, aneurysm volume should be measured. (orig.)

155

Tratamento endovascular do aneurisma da aorta abdominal infrarrenal em pacientes com anatomia favorável para o procedimento: experiência inicial em um serviço universitário / Endovascular treatment of infrarenal abdominal aortic aneurysm in patients with favorable anatomy for the repair: initial experience in a university hospital  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese CONTEXTO: Desde sua introdução, em 1991, o reparo endovascular do aneurisma da aorta abdominal infrarrenal tem se tornado uma alternativa atraente para o tratamento dessa doença. Avaliar nossos resultados iniciais quanto à segurança e eficácia dessa técnica nos levou à realização deste estudo. OBJET [...] IVOS: Analisar a mortalidade perioperatória, a sobrevida tardia, as reoperações, as taxas de perviedade e o comportamento do saco aneurismático em pacientes com anatomia favorável para a realização do procedimento. MÉTODOS: Trata-se de um estudo longitudinal, observacional e retrospectivo realizado entre outubro de 2004 e janeiro de 2009 com 41 pacientes que foram submetidos à correção endovascular do aneurisma de aorta abdominal infrarrenal por apresentarem anatomia favorável para o procedimento. Foram analisados os achados dos exames diagnósticos, o tratamento e o seguimento em todos os pacientes. RESULTADOS: Foram implantadas, com sucesso, 31 (75,6%) próteses bifurcadas e 10 (24,5%) monoilíacas, de 5 diferentes marcas. O diâmetro médio dos aneurismas fusiformes era de 62 mm. A mortalidade perioperatória foi de 4,8% e a sobrevida tardia, 90,2%. Durante o acompanhamento médio de 30 meses, 2 (4,8%) pacientes necessitaram de reintervenção, um por migração da endoprótese e outro por vazamento tipo II. Dois (4,8%) pacientes apresentaram oclusão de ramo da prótese. Oito (19,5%) vazamentos foram diagnosticados e não houve nenhuma rotura dos aneurismas. CONCLUSÃO: Apesar do pequeno número de pacientes, os resultados observados parecem justificar a realização do procedimento endovascular nos pacientes com anatomia favorável. Abstract in english BACKGROUND: Since its introduction in 1991, endovascular repair of infrarenal aortic aneurysms has become an attractive option to treat this disease. The evaluation of our initial results about safety and efficacy of this technique has led us to carry out this study. OBJECTIVES: To analyze periopera [...] tive mortality, late survival, reoperations, patency rates and the aneurysmal sac behavior in patients with favorable anatomy for this procedure. METHODS: A longitudinal, observational and retrospective study was conducted from October 2004 to January 2009, involving 41 patients with favorable anatomy for endovascular repair of infrarenal aortic aneurysm. The findings of diagnostic exams, the treatment and follow-up results were analyzed. RESULTS: Thirty-one (75.6%) bifurcated and 10 (24.5%) mono-iliac prosthesis of five different brands were successfully implanted. The average diameter of the fusiform aneurysms was 62 mm. Perioperative mortality rate was 4.8% and late survival was 90.2%. During the mean follow-up period of 30 months, two (4.8%) patients needed re-intervention, one for migration of the endoprosthesis and the other for type II endoleak. Two (4.8%) patients presented occlusion of an endograft branch. Eight (19.5%) endoleaks were diagnosed and there was no aneurysm rupture. CONCLUSION: Despite the small number of patients, the results seem to justify the performance of endovascular therapy in patients with favorable anatomy.

José Manoel da Silva, Silvestre; Fernando, Motta; Wander Eduardo, Sardinha; Domingos de, Morais Filho; Fernando, Thomazinho; Guilherme da Silva, Silvestre; Igor Schincariol, Perozin.

2011-03-01

156

Tratamiento endovascular de la insuficiencia de los ejes safenos mediante laser diodo 980 NM / Great saphenous vein endoablation using diode 980 NM laser  

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Full Text Available SciELO Chile | Language: Spanish Abstract in spanish Introducción: La enfermedad venosa crónica de las extremidades inferiores presenta una alta frecuencia en la población. El reflujo de la vena safena interna constituye la principal causa de insuficiencia venosa superficial correspondiendo al 70-80% de éstas. El tratamiento ablativo endoluminal de lo [...] s ejes sáfenos surge como la necesidad de desarrollar un tratamiento mínimamente invasivo. Objetivo: Evaluar los resultados obtenidos mediante la endoablación de la vena safena interna con laser Diodo 980. Material y método: Se realizó un estudio prospectivo que incluyó 146 extremidades inferiores en las cuales se realizó endoablación de la vena safena interna con laser Diodo 980 nm por un período de 15 meses entre los años 2005 y 2007. Se evaluó la permeabilidad inmediata de la vena safena tratada con ecodoppler color y la aparición de complicaciones secundarias al procedimiento. Resultados: De los 90 pacientes tratados, el 76,6% fueron mujeres y el 23,4%, hombres. El promedio de edad fue 58 años. La oclusión de la vena safena interna después de la endoablación con laser fue de 99,32% a la semana y de 97,3% a los 3 meses. Las complicaciones observadas fueron: cordón en relación a la vena safena interna tratada en 5,4%, eritema en 5,4%, dolor en 5,4% y equimosis en 9,4%, Todas las complicaciones se resolvieron completamente sin secuelas. El 100 % de los pacientes relató mejoría de sus síntomas y estar satisfecho con el procedimiento. Conclusión: En relación a las técnicas de tratamiento convencionales para el manejo del reflujo de la vena safena interna, los métodos endovasculares presentan baja frecuencia de complicaciones, rápida recuperación y reintegro a las actividades laborales. No presentan el alto grado de neovascularización de la safenectomía quirúrgica Abstract in english Background: Great Saphenous Vein reflux is the main cause of superficial vein insufficiency. Endoluminal ablation of this vein is a minimally invasive treatment for varices. Aim: To evalúate the results of Great Saphenous Vein endoablation using Diode 980 nm laser. Material and Methods: A prospectiv [...] e study in 146 lower extremities of 90 patients aged 25 to 91 years (69 females), subjected to Great Saphenous Vein endoablation with Diode 980 nm laser, between 2005 and 2007. Immediate permeability of the treated Saphenous Vein was evaluated with Dúplex ultrasound. Complications related to the procedure were also recorded. Results: Great Saphenous Vein occlusion after endoablation with Diode 980 nm laser was 99% at the end of first week and 97% at 3 months. Recorded complications were induration in relation to the treated Great Saphenous Vein in 5.4%, erythema in 5.4%, pain in 5.4% and ecchymosis in 9.4%. All these complications resolved. All patients reported and improvement of symptoms and were satisfied with the procedure. Conclusions: This Endovascular method for the treatment of Great Saphenous Vein reflux has a low incidence of complications, fast recovery and return to normal activities

ALVARO E, ORREGO D.

2008-06-01

157

Tratamiento endovascular de la insuficiencia de los ejes safenos mediante laser diodo 980 NM Great saphenous vein endoablation using diode 980 NM laser  

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Full Text Available Introducción: La enfermedad venosa crónica de las extremidades inferiores presenta una alta frecuencia en la población. El reflujo de la vena safena interna constituye la principal causa de insuficiencia venosa superficial correspondiendo al 70-80% de éstas. El tratamiento ablativo endoluminal de los ejes sáfenos surge como la necesidad de desarrollar un tratamiento mínimamente invasivo. Objetivo: Evaluar los resultados obtenidos mediante la endoablación de la vena safena interna con laser Diodo 980. Material y método: Se realizó un estudio prospectivo que incluyó 146 extremidades inferiores en las cuales se realizó endoablación de la vena safena interna con laser Diodo 980 nm por un período de 15 meses entre los años 2005 y 2007. Se evaluó la permeabilidad inmediata de la vena safena tratada con ecodoppler color y la aparición de complicaciones secundarias al procedimiento. Resultados: De los 90 pacientes tratados, el 76,6% fueron mujeres y el 23,4%, hombres. El promedio de edad fue 58 años. La oclusión de la vena safena interna después de la endoablación con laser fue de 99,32% a la semana y de 97,3% a los 3 meses. Las complicaciones observadas fueron: cordón en relación a la vena safena interna tratada en 5,4%, eritema en 5,4%, dolor en 5,4% y equimosis en 9,4%, Todas las complicaciones se resolvieron completamente sin secuelas. El 100 % de los pacientes relató mejoría de sus síntomas y estar satisfecho con el procedimiento. Conclusión: En relación a las técnicas de tratamiento convencionales para el manejo del reflujo de la vena safena interna, los métodos endovasculares presentan baja frecuencia de complicaciones, rápida recuperación y reintegro a las actividades laborales. No presentan el alto grado de neovascularización de la safenectomía quirúrgicaBackground: Great Saphenous Vein reflux is the main cause of superficial vein insufficiency. Endoluminal ablation of this vein is a minimally invasive treatment for varices. Aim: To evalúate the results of Great Saphenous Vein endoablation using Diode 980 nm laser. Material and Methods: A prospective study in 146 lower extremities of 90 patients aged 25 to 91 years (69 females, subjected to Great Saphenous Vein endoablation with Diode 980 nm laser, between 2005 and 2007. Immediate permeability of the treated Saphenous Vein was evaluated with Dúplex ultrasound. Complications related to the procedure were also recorded. Results: Great Saphenous Vein occlusion after endoablation with Diode 980 nm laser was 99% at the end of first week and 97% at 3 months. Recorded complications were induration in relation to the treated Great Saphenous Vein in 5.4%, erythema in 5.4%, pain in 5.4% and ecchymosis in 9.4%. All these complications resolved. All patients reported and improvement of symptoms and were satisfied with the procedure. Conclusions: This Endovascular method for the treatment of Great Saphenous Vein reflux has a low incidence of complications, fast recovery and return to normal activities

ALVARO E ORREGO D

2008-06-01

158

Cide-A Gene Expression in Patients with Obesity Qualified for Endovascular Treatment of Abdominal Aorta Aneurysm  

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Full Text Available CIDE-A gene and the genes of LRP group play a key role in the regulation of the body weight and lipid metabolism in mammals. CIDE-A is defined as a potential human obesity gene and the LRP1 gene is associated with the development of abdominal aortic aneurysm (AAA.

Feldo Marcin

2015-02-01

159

Abdominal aorta morphometric study for endovascular treatment of aortic aneurysms: comparison between spiral CT and angiography / Estudo morfométrico da aorta abdominal para tratamento endovascular dos aneurismas aórticos: comparação entre tomografia helicoidal e angiografia  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: English Abstract in portuguese OBJETIVOS: Este trabalho visa comparar a acurácia da tomografia computadorizada e da angiografia para avaliar os aneurismas de aorta abdominal (AAA) para posterior implante de endoprótese vascular. MÉTODO: De junho de 1997 até março de 2001, foram atendidos 113 pacientes portadores de AAA, tendo sid [...] o submetidos a estudo por tomografia helicoidal computadorizada de abdome e pelve e angiografia com cateter centimetrado do eixo arterial aorto-ilíaco. A idade dos pacientes variou entre 51 e 88 anos (S:69a.), sendo 104 do sexo masculino e nove do feminino. RESULTADOS: Quando comparadas as médias dos diâmetros aferidas pela tomografia computadorizada e pela angiografia, notou-se que a diferença do diâmetro foi significativa para o colo aórtico infra-renal (r 0,05). Quando comparadas as médias das extensões aferidas pela tomografia computadorizada e pela angiografia, notou-se que a diferença das extensões foi significativa para o colo aórtico infra-renal (r Abstract in english PURPOSE: To compare the computed tomography and angiography study of abdominal aortic aneurysms for posterior endograft implant. METHOD: From June 1997 to March 2001, 113 patients with abdominal aortic aneurysm were submitted to study of the aorto-iliac axis with abdominal spiral computed tomography [...] and angiography with calibrated catheter. The patient's ages ranged from 51 and 88 years (mean: 69). There were 104 males and nine females. RESULTS: When comparing the mean computed tomography and angiography diameters, we observed that there was a statistical difference for the infra-renal neck (p0.05). When comparing the mean lengths, we observed that there was a statistical difference for the aortic infra-renal neck (p

Gaudencio, Espinosa; Edson, Marchiori; Adalberto Pereira de, Araújo; Mônica Ferreira, Caramalho; Pedro, Barzola.

2002-12-01

160

Endovascular therapy of abdominal aortic aneurysm: results of a mid-term follow-up; Endovaskulaere Therapie von abdominellen Aortenaneurysmen: Klinisch-radiologishe Ergebnisse im mittelfristigen Verlauf  

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Prospective study to evaluate clinical results and complications of endovascular abdominal aortic aneurysm treatment in a mid-term follow-up. Materials and methods: A total of 122 patients (9 females, 113 males, average age 70.0{+-}7,9 years) with abdominal aortic aneurysms were treated with stent grafts (53 Vanguard or Stentor endografts, 69 Talent endografts). Group I consisted of 40 patients who had all aortic tributaries of the aneurysm sac occluded prior to endovalscular grafting, either spontaneously by parietal thrombosis or by selective coil embolization of the respective ostia preserving collateral circulation distal to the vessel occlusion. Group II consisted of 82 patients and included all cases without or with incomplete coil embolization with at least one patent vessel. Stent grafting was performed in general anesthesia in the first 21 patients, followed by peridural anesthesia in 15 cases, and local anesthesia with conscious sedation in 86 cases. The results were evaluated with Spiral-CT, MRI and radiographs of the endovascular graft, with follow-up examinations obtained at 3, 6, 12 months, and every year - Implantation was successfully completed in all cases without primary conversion surgery, laparotomy or any significant complication. Mean follow-up was 29{+-}21 months (maximum 82 months). The 30-day mortality was 0,8% due to a myocardial infarction 3 days after discharge from the hospital. A total of 47 re-interventions were performed in 29 patients (23.8%), with 35 re-interventions in 18 cases with Vanguard or Stentor endografts and 12 re-interventions in 11 patients with Talent endografts. 23 percutaneous re-interventions included distal graft extension (n=11), Wallstent for kinking and limb stenosis (n=3), and secondary coil embolization of collateral vessels (n=9). 24 surgical re-interventions included proximal graft extension (n=6), new endovascular grafts (n=3), surgical clipping of lumbar and mesenteric artery branches for type-II endoleaks following ineffective secondary coil embolization (n=1), and femorofemoral crossover bypasses (n=4). A total of 10 secondary conversion operations were performed because of damage to the membrane (n=4; 3 Vanguard endografts, 1 Talent endograft), significant caudal migrations (n=5; 4 Vanguard endografts, 1 Talent endograft) associated with type-I endoleaks (n=2), limb occlusion (n=1), disconnection of graft components (n=1), and significant endoluminal thrombus deposits (n=1). One patient, who was followed for 82 months, suffered from a significant endoleak for 10 months with increasing aneurysm diameter but he refused surgery. He was admitted with aneurysm perforation and was successfully operated with aortic graft replacement. Compared to group II, the incidence and size of endoleaks was reduced in group I (incidence 19.2% versus 29.9%, p<0.05). Group I demonstrated significantly better aneurysm shrinkage at 36 months follow-up ({delta} sagittal diameter -11.1{+-}8.4 mm versus -4.9{+-}6.2 mm, p<0.05). (orig.) [German] Zielsetzung: Prospektive Studie zur Erfassung der klinisch-radiologischen Ergebnisse und Komplikationen im mittelfristigen Verlauf nach endovaskulaerer Aneurysmatherapie. Material und Methoden: 122 Patienten (9 Frauen, 113 Maenner, Alter 70,9{+-}7,9 Jahre) mit abdominellen Aortenaneurysmen wurden mittels Stentprothesen endovaskulaer behandelt (Vanguard/Stentor n=53, Talent n=69). Patienten mit verschlossenen aortalen Seitenaesten im Aneurysmabereich (spontan oder, nach Embolisationsbehandlung) wurden in Gruppe I (n=40) zusammengefasst, Patienten mit mindestens einem perfundierten Seitenast in Gruppe II (n=82). Die Implantationen erfolgten zunaechst in Allgemeinnarkose (n=21), spaeter in Periduralanaesthesie (n=15) und schliesslich in Lokalanaestesie (n=86). Die Ergebniskontrollen erfolgten mittels Spiral-CT, MRT und Stent-Radiographie postinterventionell, nach 3, 6 und 12 Monaten, dann jaehrlich. Ergebnisse: Die Implantationen wurden in allen Faellen erfolgreich durchgefuehrt, ohne primaere Konversionsoperationen, Laparotomien oder sonstig

Pitton, M.B.; Schweitzer, H.; Herber, S.; Thelen, M. [Universitaetsklinik Mainz (Germany). Klinik fuer Radiologie; Schmiedt, W.; Neufang, A. [Universitaetsklinik Mainz (Germany). Klinik fuer Herz-, Thorax-, und Gefaesschirurgie; Dueber, C. [Universitaetsklinikum Mannheim (Germany). Inst. fuer Diagnostische Radiologie

2003-10-01

161

Early Outcomes of Endovascular Aneurysm Repair for Abdominal Aortic Aneurysm: First Preliminary Report of National Hospital Organization Network Study in Japan  

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Objective: Patients and Methods: In order to assess the early outcomes of endovascular aneurysm repair (EVAR) for abdominal aortic aneurysm (AAA) in the Japanese population, a total of 183 patients who had EVAR at eight medical centers of the National Hospital Organization were retrospectively reviewed and registered. The mean number of registered cases in each center was 23 ± 17 (4–50 cases). Patient characteristics were male sex, 84%; mean age, 77 years; age ? 80 years, 40%. Results: In-hospital mortality was one case (0.5%). Endoleaks were observed at the end of the procedure in 35 patients (19%: type I: n = 4, II: n = 22, III, n = 3, IV: n = 6). Early morbidity included delayed wound healing or infection (n = 7), deterioration of renal dysfunction (n = 3), stroke (n = 2), postoperative bleeding (n = 2), gastrointestinal complications (n = 2), and peripheral thromboembolism (n = 2). Eleven late deaths included one of unknown cause and six cardiovascular causes at a mean follow up of 1.0 year. Survival rates of freedom from all causes of death and from aneurysm-related death at one year were 95.4% ± 1.7% and 99.5% ± 0.5%, respectively. Interpretation: Although registered patients carry a variety of risks, early outcomes were satisfactory. EVAR is an acceptable alternative treatment modality for treating AAA. PMID:23555456

Handa, Nobuhiro; Onohara, Toshihiro; Akaiwa, Keiichi; Kei, Jyunichi; Okamoto, Minoru; Yamamoto, Tsuyoshi; Shimoe, Yasushi; Nakai, Mikizou; Okada, Masahiro; Takahashi, Toshiki; Suhara, Hitoshi; Kasashima, Fuminari; Endo, Masamitsu; Nishina, Takeshi; Furuyama, Tadashi; Ueno, Yoichirou

2011-01-01

162

Efficacy of Continuous Epidural Analgesia versus Total Intravenous Analgesia on Postoperative Pain Control in Endovascular Abdominal Aortic Aneurysm Repair: A Retrospective Case-Control Study  

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We reviewed our experience to compare the effectiveness of epidural analgesia and total intravenous analgesia on postoperative pain control in patients undergoing endovascular abdominal aortic aneurysm repair. Records of 32 patients during a 2-year period were retrospectively investigated. TIVA group (n = 18) received total intravenous anesthesia, and EA group (n = 14) received epidural anesthesia and sedation. Pain assessment was performed on all patients on a daily basis during rest and activity on postoperative days until discharge from ward using the numeric rating scale. Data for demographic variables, required anesthetic level, perioperative hemodynamic variables, postoperative pain, and morbidities were recorded. There were no relevant differences concerning hospital stay (TIVA group: 14.1?±?7.0, EA group: 13.5?±?7.1), perioperative blood pressure variability (TIVA group: 15.6?±?18.1, EA group: 14.8?±?11.5), and perioperative hemodynamic complication rate (TIVA group: 17%, EA group: 14%). Postoperative pain scores differed significantly (TIVA group: 5.4?±?0.9, EA group: 1.8?±?0.8, P < 0.001). Epidural anesthesia and postoperative epidural analgesia better reduce postoperative pain better compared with general anesthesia and systemic analgesia, with similar effects on hemodynamic status. PMID:24804201

Özdemir, Abdullah; Kazdal, H?z?r; Tu?cugil, Ersagun

2014-01-01

163

Abdominal aorta morphometric study for endovascular treatment of aortic aneurysms: comparison between spiral CT and angiography; Estudo morfometrico da aorta abdominal para tratamento endovascular dos aneurismas aorticos: comparacao entre tomografia helicoidal e angiografia  

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Purpose: To compare the computed tomography and angiography study of abdominal aortic aneurysms for posterior endograft implant. Method: From June 1997 to March 2001, 113 patients with abdominal aortic aneurysm were submitted to study of the aorto-iliac axis with abdominal spiral computed tomography and angiography with calibrated catheter. The patient's ages ranged from 51 and 88 years (mean: 69). There were 104 males and nine females. Results: When comparing the mean computed tomography and angiography diameters, we observed that there was a statistical difference for the infra-renal neck (p<0.05) and for the aortic aneurysm diameters (p<0.001). There was no statistical difference for the iliac artery diameters (p>0.05). When comparing the mean lengths, we observed that there was a statistical difference for the aortic infra-renal neck (p<0.05), for the distance between the renal artery and the aortic bifurcation (p<0.05) and for the common iliac artery lengths (p<0.05). There was also a statistical difference for the length between the renal artery and the internal iliac artery (p<0.05). Conclusions: In the AAA pre-procedure imaging study there were statistical differences between the computed tomography and angiographic measurement studies. We believe that computed tomography is a superior method for the evaluation of diameters and the angiography with a calibrated catheter for the length evaluation. We conclude, that both methods are complementary and must be undertaken for accurate evaluation of all candidates for aortic endograft implant. (author)

Espinosa, Gaudencio [Universidade Federal, Rio de Janeiro, RJ (Brazil). Hospital Universitario Clementino Fraga Filho. Dept. de Cirurgia Vascular; Marchiori, Edson [Universidade Federal Fluminense, Niteroi, RJ (Brazil). Dept. de Radiologia]. E-mail: edmarchiori@zipmail.com.br; Caramalho, Monica Ferreira [Hospital Miguel Couto, Rio de Janeiro (Brazil); Barzola, Pedro [Medtronic-AVE do Brasil, Sao Paulo, SP (Brazil); Araujo, Adalberto Pereira de

2002-12-01

164

Endovascular abdominal aortic repair for AAA. Anatomical suitability and limitation in Japanese population according to the inclusion criteria of Zenith AAA stent graft  

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Since 2007, the EVAR (endovascular abdominal aortic repair) grafts, Zenith, Excluder and Powerlink had been commercially available in Japan. However, a small iliac artery, typical of Japanese population especially in women, was a limiting factor to indicate EVAR. We analyzed the suitability of EVAR in Japanese population according to the inclusion criteria of Zenith AAA stent graft in the current study. From January 2006 to December 2007, 106 AAA (abdominal aortic aneurysm) patients (88 men, 18 women) with a mean age of 73 years were investigated in our institution by multi-slice CT scan in terms of suitability of EVAR, then we measured their abdominal aorta and iliac artery parameters as follows; proximal neck diameter (PND) and length (PNL), common iliac artery diameter (CIAD) and length (CIAL), suprarenal (SNA) and infrarenal neck angulation (INA), external iliac artery diameter (EIAD) and aortic length from the lowest renal artery to the aortic bifurcation (AOL). The inclusion criteria for Zenith AAA stent graft treatment were; PND: 18-28 mm, PNL more than 15 mm, unilateral CIAD less than 20 mm, CIAL at least 10 mm, SNA less than 45 degree and INA less than 60 degree, unilateral EIAD more than 7.5 mm. The indication of EVAR was 25.5% (27/106 patients), and was especially very low in women (5.6%) strictly according to the inclusion criteria of the Zenith AAA stent graft. The main reason of exclusion of EVAR was proximal short neck (40.5%), small iliac artery (30.4%rt neck (40.5%), small iliac artery (30.4%) and infrarenal aortic neck angulation (29.1%). In our analysis, female AAA patients had small PNL and EIAD with angulated neck compared with male AAA ones. Anatomical suitability of EVAR in Japanese population strictly following by the inclusion criteria of Zenith AAA stent graft was low due to their characteristic differences from the European Union (EU) and the United States (US) patients, such as short proximal neck, steep neck angulation and small iliac artery, especially in women. More flexible or branched/fenestrated grafts with a low profile sheath may be essential to be indicated EVAR in more Japanese AAA patients. (author)

165

Two-stage hybrid open-endovascular repair of a Crawford type IV aortic aneurysm: therapeutic challenge / Tratamento híbrido (debranching) de aneurisma tóraco-abdominal tipo IV de Crawford: desafio terapêutico  

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Full Text Available SciELO Brazil | Languages: English, Portuguese Abstract in portuguese Apresentamos o caso de um paciente com aneurisma aórtico tóraco-abdominal tipo IV de Crawford submetido à correção híbrida em dois estágios. Inicialmente submetido a implante cirúrgico de prótese de Dacron® com revascularização de todos os ramos viscerais a partir da ilíaca externa esquerda (debranc [...] hing) e, posteriormente, tratado pela técnica endovascular com endoprótese aorto bi-ilíaca. Após dois anos, o paciente permanece assintomático e em plena atividade laborativa. Abstract in english We present a case of a patient with Crawford type IV aortic thoracoabdominal aneurysm. The patient underwent hybrid repair in two stages. Initially a Dacron(r) graft was implanted surgically with revascularization of all visceral branches from the left external iliac artery (debranching). On a later [...] date, the second stage of treatment was with an endovascular technique with bi aorto-iliac endoprosthesis. After 2 years the patient remains asymptomatic and in full working activity.

Abdo, Farret Neto; Liana Berucia Freire de, Oliveira; Guilherme Tarso de Andrade, Alves; George Anderson da Penha, Andrade; Eduardo Dantas Baptista de, Faria.

2014-04-01

166

Dual-energy CT in the follow-up after endovascular abdominal aortic aneurysm repair; Dual-Energy CT zur postoperativen Langzeitkontrolle nach endovaskulaer therapierten abdominellen Aortenaneurysmen  

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This study investigates the dual-energy procedure for postoperative CT follow-up scans after endovascularly treated abdominal aortic aneurysms. The procedure is analyzed with respect to its sensitivity and specificity as well as the associated radiation exposure. 51 examinations were carried out on 47 patients between February 2009 and March 2010. For each patient, a non-enhanced, an arterial and a venous scan were conducted, the latter two using the dual-energy technology. Virtual images for the non-enhanced phase were reconstructed from the data taken in the venous phase. Protocol A, the reference standard, consisted of non-enhanced images and images of the arterial and venous phase. In protocol B, standard non-enhanced images were replaced by the reconstructed virtual non-enhanced images. Protocol C consisted only of virtual non-enhanced and 80 kV images taken during the venous phase. All data was anonymized and evaluated by two independent radiologists. For protocol C, sensitivity, specificity, negative and positive predictive values were computed. The effective radiation dosage was determined for each scan. All endoleaks identified in protocol A were found using protocols B and C. For protocol C, the sensitivity and negative predictive value were 100 %, the specificity was 94.1 %, and the positive predictive value was 89.5 %. Compared to protocol A, protocol C reduces the radiation exposure by 62.45 %. A scan protocol consisting of virtual non-enhanced images as well as 80 kV images taken during the venous phase was found to be a reliable alternative method for diagnosing endoleaks, while reducing the radiation exposure by 62.45 %. (orig.)

Braegelmann, A.; Heindel, W.; Seifarth, H. [Universitaetsklinikum Muenster (Germany). Inst. fuer Klinische Radiologie; Bunck, A.; Maintz, D. [Universitaetsklinikum Muenster (Germany). Inst. fuer Klinische Radiologie; Universitaetsklinikum Koeln (Germany). Inst. und Poliklinik fuer Radiologische Diagnostik; Donas, K.; Kasprzak, B. [Universitaetsklinikum Muenster (Germany). Klinik fuer Vaskulaere und Endovaskulaere Chirurgie

2013-04-15

167

Fatores envolvidos na migração das endopróteses em pacientes submetidos ao tratamento endovascular do aneurisma da aorta abdominal Factors involved in the migration of endoprosthesis in patients undergoing endovascular aneurysm repair  

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Full Text Available A migração da endoprótese é complicação do tratamento endovascular definida como deslocamento da ancoragem inicial. Para avaliação da migração, verifica-se a posição da endoprótese em relação a determinada região anatômica. Considerando o aneurisma da aorta abdominal infrarrenal, a área proximal de referência consiste na origem da artéria renal mais baixa e, na região distal, situa-se nas artérias ilíacas internas. Os pacientes deverão ser monitorizados por longos períodos, a fim de serem identificadas migrações, visto que estas ocorrem normalmente após 2 anos de implante. Para evitar migrações, forças mecânicas que propiciam fixação, determinadas por características dos dispositivos e incorporação da endoprótese, devem predominar sobre forças gravitacionais e hemodinâmicas que tendem a arrastar a prótese no sentido caudal. Angulação, extensão e diâmetro do colo, além da medida transversa do saco aneurismático, são importantes aspectos morfológicos do aneurisma relacionados à migração. Com relação à técnica, não se recomenda implante de endopróteses com sobredimensionamento excessivo (> 30%, por provocar dilatação do colo do aneurisma, além de dobras e vazamentos proximais que também contribuem para a migração. Por outro lado, endopróteses com mecanismos adicionais de fixação (ganchos, farpas e fixação suprarrenal parecem apresentar menos migrações. O processo de incorporação das endopróteses ocorre parcialmente e parece não ser suficiente para impedir migrações tardias. Nesse sentido, estudos experimentais com endopróteses de maior porosidade e uso de substâncias que permitam maior fibroplasia e aderência da prótese à artéria vêm sendo realizados e parecem ser promissores. Esses aspectos serão discutidos nesta revisão.Migration of the endoprosthesis is defined as the misplacement of its initial fixation. To assess the migration, the position of the endoprosthesis regarding a certain anatomic region is verified. Considering the aneurysm of the infrarenal abdominal aorta, the proximal area of reference is the origin of the lowest renal artery and, at the distal region, it is located next to the internal iliac arteries. Patients should be monitored for long periods so that migrations can be identified; these migrations usually occur 2 years after the implantation. To avoid migrations, mechanical forces that enable fixation and that are determined by the characteristics of the devices and by the incorporation of the endoprosthesis should predominate over gravitational and hemodynamic forces, which tend to drag the prosthesis toward to caudal direction. Angulation, extension, and diameter of the neck, and transversal measure of the aneurysmatic sac are important morphological aspects related to migration. In relation to the technique, endoprosthesis implantation with excessive oversizing (> 30% is not recommended because it leads to aortic neck dilatation, folds and proximal leakage that also contribute to migration. On the other hand, endoprosthesis with additional fixation devices (hooks, barbs and suprarenal fixation seem to be less associated with migration. The process of endoprosthesis incorporation is partial and does not seem to be enough to prevent later migrations. In this sense, experimental studies with endoprosthesis of higher porosity, as well as the use of substances that allow higher fibroplasia and adherence of the prosthesis to the artery, have been conducted and are promising. Such aspects are discussed in the present review of the literature.

Marcelo José de Almeida

2010-06-01

168

Fatores envolvidos na migração das endopróteses em pacientes submetidos ao tratamento endovascular do aneurisma da aorta abdominal / Factors involved in the migration of endoprosthesis in patients undergoing endovascular aneurysm repair  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Languages: English, Portuguese Abstract in portuguese A migração da endoprótese é complicação do tratamento endovascular definida como deslocamento da ancoragem inicial. Para avaliação da migração, verifica-se a posição da endoprótese em relação a determinada região anatômica. Considerando o aneurisma da aorta abdominal infrarrenal, a área proximal de [...] referência consiste na origem da artéria renal mais baixa e, na região distal, situa-se nas artérias ilíacas internas. Os pacientes deverão ser monitorizados por longos períodos, a fim de serem identificadas migrações, visto que estas ocorrem normalmente após 2 anos de implante. Para evitar migrações, forças mecânicas que propiciam fixação, determinadas por características dos dispositivos e incorporação da endoprótese, devem predominar sobre forças gravitacionais e hemodinâmicas que tendem a arrastar a prótese no sentido caudal. Angulação, extensão e diâmetro do colo, além da medida transversa do saco aneurismático, são importantes aspectos morfológicos do aneurisma relacionados à migração. Com relação à técnica, não se recomenda implante de endopróteses com sobredimensionamento excessivo (> 30%), por provocar dilatação do colo do aneurisma, além de dobras e vazamentos proximais que também contribuem para a migração. Por outro lado, endopróteses com mecanismos adicionais de fixação (ganchos, farpas e fixação suprarrenal) parecem apresentar menos migrações. O processo de incorporação das endopróteses ocorre parcialmente e parece não ser suficiente para impedir migrações tardias. Nesse sentido, estudos experimentais com endopróteses de maior porosidade e uso de substâncias que permitam maior fibroplasia e aderência da prótese à artéria vêm sendo realizados e parecem ser promissores. Esses aspectos serão discutidos nesta revisão. Abstract in english Migration of the endoprosthesis is defined as the misplacement of its initial fixation. To assess the migration, the position of the endoprosthesis regarding a certain anatomic region is verified. Considering the aneurysm of the infrarenal abdominal aorta, the proximal area of reference is the origi [...] n of the lowest renal artery and, at the distal region, it is located next to the internal iliac arteries. Patients should be monitored for long periods so that migrations can be identified; these migrations usually occur 2 years after the implantation. To avoid migrations, mechanical forces that enable fixation and that are determined by the characteristics of the devices and by the incorporation of the endoprosthesis should predominate over gravitational and hemodynamic forces, which tend to drag the prosthesis toward to caudal direction. Angulation, extension, and diameter of the neck, and transversal measure of the aneurysmatic sac are important morphological aspects related to migration. In relation to the technique, endoprosthesis implantation with excessive oversizing (> 30%) is not recommended because it leads to aortic neck dilatation, folds and proximal leakage that also contribute to migration. On the other hand, endoprosthesis with additional fixation devices (hooks, barbs and suprarenal fixation) seem to be less associated with migration. The process of endoprosthesis incorporation is partial and does not seem to be enough to prevent later migrations. In this sense, experimental studies with endoprosthesis of higher porosity, as well as the use of substances that allow higher fibroplasia and adherence of the prosthesis to the artery, have been conducted and are promising. Such aspects are discussed in the present review of the literature.

Marcelo José de, Almeida; Winston Bonetti, Yoshida; Ludvig, Hafner; Juliana Henrique dos, Santos; Bruno Felipe, Souza; Flávia Fagundes, Bueno; Janaína Lopes, Evangelista; Lucas José Vaz, Schiavão.

2010-06-01

169

Fluid-structure interaction of a patient-specific abdominal aortic aneurysm treated with an endovascular stent-graft  

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Full Text Available Abstract Background Abdominal aortic aneurysms (AAA are local dilatations of the infrarenal aorta. If left untreated they may rupture and lead to death. One form of treatment is the minimally invasive insertion of a stent-graft into the aneurysm. Despite this effective treatment aneurysms may occasionally continue to expand and this may eventually result in post-operative rupture of the aneurysm. Fluid-structure interaction (FSI is a particularly useful tool for investigating aneurysm biomechanics as both the wall stresses and fluid forces can be examined. Methods Pre-op, Post-op and Follow-up models were reconstructed from CT scans of a single patient and FSI simulations were performed on each model. The FSI approach involved coupling Abaqus and Fluent via a third-party software - MpCCI. Aneurysm wall stress and compliance were investigated as well as the drag force acting on the stent-graft. Results Aneurysm wall stress was reduced from 0.38 MPa before surgery to a value of 0.03 MPa after insertion of the stent-graft. Higher stresses were seen in the aneurysm neck and iliac legs post-operatively. The compliance of the aneurysm was also reduced post-operatively. The peak Post-op axial drag force was found to be 4.85 N. This increased to 6.37 N in the Follow-up model. Conclusion In a patient-specific case peak aneurysm wall stress was reduced by 92%. Such a reduction in aneurysm wall stress may lead to shrinkage of the aneurysm over time. Hence, post-operative stress patterns may help in determining the likelihood of aneurysm shrinkage post EVAR. Post-operative remodelling of the aneurysm may lead to increased drag forces.

McGloughlin Tim M

2009-10-01

170

Fluid-structure interaction of a patient-specific abdominal aortic aneurysm treated with an endovascular stent-graft.  

LENUS (Irish Health Repository)

BACKGROUND: Abdominal aortic aneurysms (AAA) are local dilatations of the infrarenal aorta. If left untreated they may rupture and lead to death. One form of treatment is the minimally invasive insertion of a stent-graft into the aneurysm. Despite this effective treatment aneurysms may occasionally continue to expand and this may eventually result in post-operative rupture of the aneurysm. Fluid-structure interaction (FSI) is a particularly useful tool for investigating aneurysm biomechanics as both the wall stresses and fluid forces can be examined. METHODS: Pre-op, Post-op and Follow-up models were reconstructed from CT scans of a single patient and FSI simulations were performed on each model. The FSI approach involved coupling Abaqus and Fluent via a third-party software - MpCCI. Aneurysm wall stress and compliance were investigated as well as the drag force acting on the stent-graft. RESULTS: Aneurysm wall stress was reduced from 0.38 MPa before surgery to a value of 0.03 MPa after insertion of the stent-graft. Higher stresses were seen in the aneurysm neck and iliac legs post-operatively. The compliance of the aneurysm was also reduced post-operatively. The peak Post-op axial drag force was found to be 4.85 N. This increased to 6.37 N in the Follow-up model. CONCLUSION: In a patient-specific case peak aneurysm wall stress was reduced by 92%. Such a reduction in aneurysm wall stress may lead to shrinkage of the aneurysm over time. Hence, post-operative stress patterns may help in determining the likelihood of aneurysm shrinkage post EVAR. Post-operative remodelling of the aneurysm may lead to increased drag forces.

Molony, David S

2009-01-01

171

Morbidity and mortality in the early postoperative course following elective reconstruction of abdominal aorta aneurysm using endovascular and open surgical techniques  

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Full Text Available Backgroud/Aim. Surgical treatment is the only method of abdominal aorta aneurysm (AAA treatment. According to data of the available literature, elective open, ie conservative, reconstruction (OR is followed by 3%-5% mortality, as well as by numerous comorbide conditions inside the early postoperative course (the first 30 days after the surgery that occur in 20%-30% of the operated on. The aim of the study was to present preliminar results of a comparative clinical retrospective study of early postoperative morbidity and mortality in AAA reconstruction using endovascular (EVAR and open surgical techniques. Method. This comparative clinical retrospective study included 59 patients, electively operated on for AAA within the period January 2008 - March 2009, divided into two groups. The group I counted 29 (49% of the patients who had been submitted to EVAR by the use of Excluder stent. The group II consisted of 30 (51% of the patients operated on using OR. All of the patients were males, 50-87 years old (mean 67.6 year in the group I, and 54-86 years (mean 68.3 years in the group II. All tha patients had AAA larger than 50 mm, in the group I 50-105 mm (mean 68 mm, and in the group II 50-84 mm (mean 65 mm. Preoperative comorbide conditions of any patients were similar (coronary disease, obstructive lung disease, chronical renal insufficiency. Patients operated on as emergency cases due to rupture or due to symptomatic aneurysm (threthening rupture were excluded. The analysed parameters were the duration of surgical operation, intraoperative and operative blood substitution, postoperative morbidity, the duration of postoperative hospitalization, and hospital mortality. Results. The obtained results showed a statistically significantly shorter time taken by EVAR surgery (average 95 min, ranging 70-180 min as compared to OR surgery (average 167 min, ranging 90-300 min. They also showed statistically significantly less blood loss in the patients operated on by the use of EVAR surgery (average blood compensation 130 mL, ranging 0-1050 mL as compared to OR surgery (average blood compensation 570 mL, ranging 0-2.000 mL. Also, general complications as wound infection, no restoration of intestines peristalsis, febrility, proteinic and electolytic disbalance, lung and heart decompensation were statistically significantly less following EVAR than OR surgery. Postoperative hospitalization was also statistically significantly shorter after EVAR than after OR surgery (average 4.2 days, ranging 3-7 days; 10.6 days, ranging 8-35 days, respectively. Finally, within this 13- month study there was no mortality following EVAR surgery, while two patients died after OR surgery. Conclusion. In the patients with elective AAA reconstruction endovascular reconstruction is shown to be far more safer and minimally invasive procedure than open conventional aorta reconstruction.

Marjanovi? Ivan

2010-01-01

172

Persistent endoleak after endovascular aneurysm repair for acute Q-fever-infected aortocaval fistula.  

Science.gov (United States)

We present a case of an endovascular aneurysm repair for a Q-fever-infected acute abdominal aortic aneurysm with aortocaval fistula. Type 2 endoleak persisted after successful endovascular repair. PMID:25430660

Prinsen, Jan-Hein S; Boersma, Doeke; van Loenhout, Ruud; van Schaik, Paul M; Verhoeven, Bart An

2014-11-27

173

Innovador tratamiento de heridas abdominales complejas mediante terapia de presión negativa con instilación intermitente / Novel treatment of complex abdominal wounds with negative pressure therapy with intermittent instillation  

Scientific Electronic Library Online (English)

Full Text Available SciELO Spain | Language: Spanish Abstract in spanish Describimos nuestra experiencia en el tratamiento de heridas abdominales postquirúrgicas dehiscentes y contaminadas con exposición de material protésico, mediante terapia de presión negativa con instilación intermitente de soluciones tópicas. Este dispositivo nos permitió el rescate de pacientes plu [...] ripatológicos evitando una reintervención compleja de alta morbi-mortalidad y facilitando el cierre de la herida, además con conservación de la malla en la mayor parte de los casos. Abstract in english The present data reports our experience in the treatment of postsurgical dehiscent and infected abdominal wounds with exposure of prosthetic material with negative pressure therapy with intermittent instillation of topical solutions. This device allowed the rescue of pluripatological patients avoidi [...] ng a complex resurgery of high morbi-mortality and facilitating wound closure, besides with conservation of the mesh in most of the cases.

A., García-Ruano; S., García-Fernández; S., Mahedero-Navarrete; J. M., Lasso-Vázquez; R., Pérez-Cano.

2013-09-01

174

Resultados del tratamiento endovascular de la patología carotídea en el Hospital San Juan de Dios de Enero 2007 a Febrero 2010 / Results of endovascular management of carotid disease at San Juan de Dios Hospital from January 2007 to February 2010  

Scientific Electronic Library Online (English)

Full Text Available SciELO Costa Rica | Language: Spanish Abstract in spanish Justificación y objetivo: Determinar la morbi-mortalidad de los pacientes con enfermedad carotídea tratados por medio de stent en el Hospital San Juan de Dios, Costa Rica; de Enero 2007 a Febrero 2010. Métodos: Se realizó un registro retrospectivo observacional de los pacientes con Enfermedad Carotí [...] dea durante 13 meses en nuestro instituto. Basado en la información obtenida de los expedientes clínicos, dos subgrupos fueron identificados: pacientes sintomáticos y asintomáticos. Los factores de riesgo, escala ABCD2, territorio cerebral afectado, medidas de severidad de lesión no-invasiva e invasivas, tamaño de stents y finalmente complicaciones peri-operatorias, fueron investigadas y evaluadas. Resultados: 76 pacientes fueron identificados en nuestra serie, 87% (n=66/76) sintomáticos y 13% (n=10/76) asintomáticos. La Hipertensión Arterial fue el factor de riesgo más frecuente, seguido por el tabaquismo. Se evidenció una sub-estimación de la severidad de la lesión en los ultrasonidos diagnósticos en 24% (n=18/76) de los pacientes. Durante el procedimiento, se documentó predilatación de la lesión en 55% (n=42/76) de los pacientes y los stents más frecuentemente utilizados fueron de 7x30mm y 8x30mm representando un 47% (n=36/76) de los casos. La morbilidad neurológica de los pacientes asintomáticos fue del 0% y en el subgrupo de pacientes sintomáticos fue del 3% (2/66). Conclusión: La terapia endovascular demostró ser una técnica segura y efectiva para la revascularización carotídea. Series más numerosas de pacientes deberían ser investigadas para adquirir mayor significancia estadística. Abstract in english Background and aim: To determine the morbi-mortality of patients treated with endovascular stenting for Carotid Artery disease at San Juan de Dios Hospital, Costa Rica; from January 2007 to February 2010. Methods: A retrospective observational registry of patients treated with Carotid Artery endovas [...] cular stenting was maintained at our institution over 13 months. Based on the information acquired from medical records, two subgroups were identified: symptomatic and asymptomatic. Some aspects were researched and evaluated such as risk factors, ABCD scale, affected cerebral territory, invasive and non-invasive lesion measurements, stent sizing and finally peri-operatory complications. Results: 76 patients were identified in this series, 87% (n=66/76) symptomatic and 13% (n=10/76) asymptomatic. The most frequent risk factor was hypertension, followed by smoking. Underestimation by ultrasound of lesion severity was found in up to 24% (n=18/76) of patients. Predilatation was done in 55% (n=42/76) and most frequent stent sizes identified were 7x30mm or 8x30mm in 47% (n=36/76) of patients. Neurologic morbidity of asymtomatic patients was 0%, and in the symptomatic group was a 3% (2/66) Conclusion: Endovascular therapy demonstrated to be a safe and effective as a revascularization technique; however larger patient series should be investigated for grater statistical significance.

Christian, Fonseca-Bolaños; Miguel, Montero-Baker; Johana, Vásquez-Céspedes; Róger, Jiménez-Juárez; Luis, Morelli-Guillen.

2012-03-01

175

Existen ventajas en el abordaje extraperitoneal para el tratamiento del aneurisma de aorta abdominal? Are there advantages in the extraperitoneal approach for the treatment of abdominal aortic aneurysm?  

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Full Text Available Existen controversias acerca de las posibles ventajas del abordaje transperitoneal vs. extraperitoneal en la cirugía de aneurisma de aorta abdominal; con este último, algunos estudios reportan menor morbilidad y complicaciones operatorias. Este estudio describe los resultados que se obtuvieron con los dos abordajes en un solo centro de referencia. Es un estudio retrospectivo, descriptivo, de doce años, en un grupo de 299 pacientes con diagnóstico de aneurisma de aorta abdominal que fueron intervenidos de manera electiva y distribuidos en dos grupos según el abordaje (transperitoneal = grupo 1, extraperitoneal = grupo 2. En total se operaron 93 pacientes en el grupo 1 y 206 pacientes en el 2. En ambos predominaron pacientes del sexo masculino. La edad media fue de 68 años. Las frecuencias de co-morbilidades fueron similares en los dos grupos. Se registró una tendencia a menor número de reoperaciones en el grupo 2 (12,9% vs. 5,8%, De otra parte, se observó una tendencia de mayores complicaciones post-operatorias en el grupo 1 con una frecuencia de 30,1% vs. 12,6% en el grupo 2; sin embargo, el tipo de complicaciones fue similar. Los resultados mostraron una estancia hospitalaria media de 13,3 días (DE ± 10,4 vs. 7,19 días (DE ± 4,20 p= 0,00001, estancia post-operatoria media de 9,16 días (DE ± 8,1 vs. 5,62 días (DE ± 3,46 p= 0,001 y estancia en la unidad de cuidados intensivos media de 2,76 días (DE ± 4,19 vs. 1,56 días (DE ± 1,86 p= 0,00001 en los grupos 1 y 2 respectivamente. La mortalidad inmediata total fue de 3,3%. La frecuencia de mortalidad para los grupos fue de 6,5% (n= 6 vs. 1,9% (n= 4 respectivamente. En nuestra experiencia el abordaje por la vía extraperitoneal presenta una tendencia favorable para los pacientes en cuanto a la estancia hospitalaria, la estancia en la unidad de cuidados intensivos, la frecuencia de complicaciones post-operatorias y la frecuencia de re-intervenciones en el post-operatorio inmediato. Debido al tamaño de la muestra no puede concluirse que hubo una diferencia estadísticamente significativa en cuanto a la mortalidad; sin embargo se observó una tendencia a la reducción de la misma con el abordaje extraperitoneal.There are current controversies over the benefits of the extraperitoneal vs the transperitoneal approach for repairing an infrarenal abdominal aortic aneurysm. Several studies report a reduction in morbidity and mortality with the former approach. This study reports the short term results using both approaches at one reference center. This is a 12 year, retrospective descriptive study of 299 patients who underwent an elective open repair of an abdominal aortic aneurysm, distributed in two groups: transperitoneal approach group=1, extraperitoneal approach group=2. A total of 93 patients in group 1 and 206 in group 2 were intervened, mainly male patients with an median age of 68 years. The frequencies of co-morbidities were similar in both groups. There was a reduced tendency of reoperations in group 2 (12.9%vs 5.8%, and a greater tendency of postoperative complications in group 1 (30.1% vs 12.6%. However, the types complications were similar. The results show a median hospital stay of 13.3 days (SD+- 10,4 vs. 7.19 days (SD+- 4.20 p=0.00001, median post-operative stay of 9.16 days (SD-+ 8,1 vs. 5.62 days (SD+- 3,46 p= 0.001 and median intensive unit stay of 2.76 days (SD+-4.19 vs 1.56 days (SD+-1.86 p=0.00001 in group 1 y 2 respectively. Early global mortality was 3.3% with a distribution frequency of 6.5% (n=6 in group 1 and 1.9% (n=4 in group 2. In our experience, the extraperitoneal approach offers better results regarding hospital, postoperative and intensive care unit stay, as well as post-operative re-operation rates and complications. Because of the small sample size, the mortality difference was not statistically significant; however, we found an important tendency towards improved mortality rates with this approach.

Heinz Hiller

2010-02-01

176

[Endovascular prostheses].  

Science.gov (United States)

Endovascular grafts are transluminally implanted vascular devices that combine a vascular stent with a "prosthetic cover" and are designed for use as a less invasive treatment of vascular disease. Indications include aneurysms, arteviovenous fistulas, dissections, traumatic vascular lesions, and vascular occlusions. High risk patients with severe co morbidities are candidates for endoluminal grafting. Specific complications peculiar to stent-grafts have been described. Early and midterm results demonstrate that endovascular grafting is a safe and promising treatment modality. Concurrent comparative studies, randomized trials and registries will be needed to evaluate long-term efficacy of those devices. PMID:15584462

Chervenkov, V

2003-01-01

177

Implementation of a successful endovascular surgical program in a non-teaching tertiary-care centre in Ontario  

OpenAIRE

Endovascular surgical techniques have become an accepted standard of care for high-risk patients with abdominal aortic aneurysms and for certain patients with thoracic aortic pathology and peripheral arterial aneurysms. In Canada, endovascular surgery has been concentrated in tertiary-care academic teaching institutions. As the technology evolves and as expertise advances, the applicability of endovascular techniques will expand. With time, and as the demand for endovascular techniques rises,...

Willoughby, Rod P. N.; Fenton, John A.; Pudupakkam, Santosh R.; Greco, Robert A.; Roberts, Evan W. D.; Derose, Guy; Kribs, Stewart

2004-01-01

178

Evaluation of abdominal aortic aneurysm for endovascular stent-grafting with volume-rendered CT images of vessel lumen and thrombus  

International Nuclear Information System (INIS)

The purpose of this study was to evaluate the accuracy of CT images of abdominal aortic aneurysm (AAA) with volume-rendered (VR) display of vessel lumen and thrombus and to evaluate its usefulness in the planning of stent-grafting. Helical CT was performed in 11 patients with AAA. Volume data of the vessel lumen and thrombus were separately extracted, and the VR images were reconstructed. Vessel measurements were made by five radiologists and compared with the axial and multiplanar reconstruction (MPR) images. Angiography and intravascular ultrasonography were used as standard references. The relations of aneurysmal sac to the major arterial branches and the subjective overall diagnostic value were evaluated by using a continuous rating scale. Accuracy of measurements was higher on VR images than on axial/MPR in 7 of 13 regions. Interobserver variance of VR images was smaller in 7 of 14 regions. Detection of renal and internal iliac artery involvements was better on VR images (p<0.05). Overall diagnostic value was also higher on VR images (p<0.05). VR CT images of vessel lumen and thrombus are supportive of and supplementary to conventional axial/MPR images in planning stent-grafting for AAA. (author)

179

Ruptured abdominal aortic aneurysm.  

Science.gov (United States)

Ruptured abdominal aortic aneurysm (AAA) continues to be one of the most lethal vascular pathologies we encounter. Its management demands prompt and efficient evaluation and repair. Open repair has traditionally been the mainstay of treatment. However, the introduction of endovascular techniques has altered the treatment algorithm for ruptured AAA in most major medical centers. We present recent literature and techniques for ruptured AAA and its surgical management. PMID:20668419

Sachs, T; Schermerhorn, M

2010-06-01

180

Non-invasiv, Multi Detector Row (MDR) based Computational Fluid Dynamics (CFD) analysis of hemodynamics in infrarenal Abdominal Aortic Aneurysm (AAA) before and after endovascular repair; Blutflusssimulation mittels Computational-Fluid-Dynamics an aus CT-Daten rekonstruierten Aortenaneurysmata vor und nach Stent-Graft Implantation  

Energy Technology Data Exchange (ETDEWEB)

Purpose: Simulation, description and analysis of dynamic pressure in infrarenal abdominal aortic aneurysms (AAA) before and after endovascular repair. Materials and Methods: During March 1996 and May 2001, 13 patients with AAA underwent endovascular treatment. The MDR-CT scans of these patients were used for the non-invasive analysis of the hemodynamics in the aorta with CFD software before and after endovascular repair. One pre-interventional and three post-interventional CT scans were analyzed for each patient. Results: Compared to the pre-interventional simulation, endovascular treatment led to an average dynamic pressure decrease of 1057 Pa in 10 of 13 patients. During the subsequent course, the median of the dynamic pressure decreased in 8 of 13 patients. Vulnerable regions initially identified as high-pressure regions, like the docking area or the second stent limb, adapted to the pressure in the surrounding tissue in the course of time. (orig.) [German] Ziel: Simulation, Beschreibung und Entwicklung dynamischer Druckverhaeltnisse auf die Aorten- bzw. Stentgraftwand im zeitlichen Verlauf vor und nach stentgestuetzter Ausschaltung infrarenaler Bauchaortenaneurysmata. Patienten und Methode: Zwischen Maerz 1996 und Mai 2001 wurden 13 Patienten mit einem infrarenalen Bauchaortenaneurysma einer transfemoralen Stent-Graft-Implantation unterzogen. Basierend auf Multi Detector Row (MDR) -CT Datensaetzen dieser 13 Patienten wurde mithilfe einer ''Computational Fluid Dynamics'' (CFD) Software eine Blutflusssimulation der abdominellen Aorta vor und nach Stentimplantation durchgefuehrt. Von jedem Patienten wurden Simulationen von einer prae- und drei postoperativen Follow-up CT-Serien erstellt. Ergebnisse: Die Stentimplantation fuehrte bei 10/13 Patienten zu einer Senkung des dynamischen Spitzendrucks um durchschnittlich 1057 Pa von der prae- zur postoperativen Untersuchung. Im weiteren Verlauf sank auch der Median des dynamischen Druckes bei 8/13 Patienten. Regionen mit erhoehten Druckwerten (sog. vulnerable Regionen), wie beispielsweise die des angedockten Stentschenkels, glichen sich im Verlauf der Zeit den Umgebungsdruecken an. (orig.)

Juchems, M.S.; Pless, D.; Fleiter, T.R.; Gabelmann, A.; Brambs, H.J.; Aschpoff, A J. [Ulm Univ. (Germany). Abt. fuer diagnostische Radiologie; Liewald, F. [Ulm Univ. (Germany). Abt. fuer Thorax-und Gefaesschirurgie

2004-01-01

181

Endovascular Management of Acute Bleeding Arterioenteric Fistulas  

International Nuclear Information System (INIS)

The objective of this study was to review the outcome of endovascular transcatheter repair of emergent arterioenteric fistulas. Cases of abdominal arterioenteric fistulas (defined as a fistula between a major artery and the small intestine or colon, thus not the esophagus or stomach), diagnosed over the 3-year period between December 2002 and December 2005 at our institution, were retrospectively reviewed. Five patients with severe enteric bleeding underwent angiography and endovascular repair. Four presented primary arterioenteric fistulas, and one presented a secondary aortoenteric fistula. All had massive persistent bleeding with hypotension despite volume substitution and transfusion by the time of endovascular management. Outcome after treatment of these patients was investigated for major procedure-related complications, recurrence, reintervention, morbidity, and mortality. Mean follow-up time was 3 months (range, 1-6 months). All massive bleeding was controlled by occlusive balloon catheters. Four fistulas were successfully sealed with stent-grafts, resulting in a technical success rate of 80%. One patient was circulatory stabilized by endovascular management but needed immediate further open surgery. There were no procedure-related major complications. Mean hospital stay after the initial endovascular intervention was 19 days. Rebleeding occurred in four patients (80%) after a free interval of 2 weeks or longer. During the follow-up period three patients neede the follow-up period three patients needed reintervention. The in-hospital mortality was 20% and the 30-day mortality was 40%. The midterm outcome was poor, due to comorbidities or rebleeding, with a mortality of 80% within 6 months. In conclusion, endovascular repair is an efficient and safe method to stabilize patients with life-threatening bleeding arterioenteric fistulas in the emergent episode. However, in this group of patients with severe comorbidities, the risk of rebleeding is high and further intervention must be considered. Patients with cancer may only need treatment for the acute bleeding episode, and an endovascular approach has the advantage of low morbidity

182

Endovascular management of acute bleeding arterioenteric fistulas  

DEFF Research Database (Denmark)

The objective of this study was to review the outcome of endovascular transcatheter repair of emergent arterioenteric fistulas. Cases of abdominal arterioenteric fistulas (defined as a fistula between a major artery and the small intestine or colon, thus not the esophagus or stomach), diagnosed over the 3-year period between December 2002 and December 2005 at our institution, were retrospectively reviewed. Five patients with severe enteric bleeding underwent angiography and endovascular repair. Four presented primary arterioenteric fistulas, and one presented a secondary aortoenteric fistula. All had massive persistent bleeding with hypotension despite volume substitution and transfusion by the time of endovascular management. Outcome after treatment of these patients was investigated for major procedure-related complications, recurrence, reintervention, morbidity, and mortality. Mean follow-up time was 3 months (range, 1-6 months). All massive bleeding was controlled by occlusive balloon catheters. Four fistulas were successfully sealed with stent-grafts, resulting in a technical success rate of 80%. One patient was circulatory stabilized by endovascular management but needed immediate further open surgery. There were no procedure-related major complications. Mean hospital stay after the initial endovascular intervention was 19 days. Rebleeding occurred in four patients (80%) after a free interval of 2 weeks or longer. During the follow-up period three patients needed reintervention. The in-hospital mortality was 20% and the 30-day mortality was 40%. The midterm outcome was poor, due to comorbidities or rebleeding, with a mortality of 80% within 6 months. In conclusion, endovascular repair is an efficient and safe method to stabilize patients with life-threatening bleeding arterioenteric fistulas in the emergent episode. However, in this group of patients with severe comorbidities, the risk of rebleeding is high and further intervention must be considered. Patients with cancer may only need treatment for the acute bleeding episode, and an endovascular approach has the advantage of low morbidity Udgivelsesdato: 2008/5

Leonhardt, H.; Mellander, S.

2008-01-01

183

Intestinal infarction: A complication of endovascular therapy  

Energy Technology Data Exchange (ETDEWEB)

This report presents a rare case of intestinal infarction following endovascular therapy. A female patient who had undergone an internal carotid artery stenting procedure presented suddenly with abdominal pain. Radiological and clinical examinations at the time suggested a picture of intestinal ischaemia, in view of the patient's general conditions and co-existing morbidities surgical intervention was not considered to be an option. The patient died 4 days after the carotid stenting procedure, post-mortem examination revealed infarction of the ileum and caecum. The learning outcomes are if performing endovascular therapy in a patient with diffuse atherosclerotic disease early consideration of intestinal ischaemia should be given to any patient who presents with acute post-procedural abdominal pain.

England, Andrew [Department of Radiology, South Manchester University Hospitals NHS Trust, Southmoor Road, Wythenshawe, Manchester M23 9LT (United Kingdom)]. E-mail: andrew.england@smtr.nhs.uk; Butterfield, John S. [Department of Radiology, South Manchester University Hospitals NHS Trust, Southmoor Road, Wythenshawe, Manchester M23 9LT (United Kingdom); Sukumar, Sathi [Department of Radiology, South Manchester University Hospitals NHS Trust, Southmoor Road, Wythenshawe, Manchester M23 9LT (United Kingdom); Thompson, David [Department of Radiology, South Manchester University Hospitals NHS Trust, Southmoor Road, Wythenshawe, Manchester M23 9LT (United Kingdom); Roulson, Jo-An [Department of Histopathology, South Manchester University Hospitals NHS Trust, Southmoor Road, Wythenshawe, Manchester M23 9LT (United Kingdom); Pritchard, Susan [Department of Histopathology, South Manchester University Hospitals NHS Trust, Southmoor Road, Wythenshawe, Manchester M23 9LT (United Kingdom); Ashleigh, Raymond J. [Department of Radiology, South Manchester University Hospitals NHS Trust, Southmoor Road, Wythenshawe, Manchester M23 9LT (United Kingdom)

2007-08-15

184

Intestinal infarction: A complication of endovascular therapy  

International Nuclear Information System (INIS)

This report presents a rare case of intestinal infarction following endovascular therapy. A female patient who had undergone an internal carotid artery stenting procedure presented suddenly with abdominal pain. Radiological and clinical examinations at the time suggested a picture of intestinal ischaemia, in view of the patient's general conditions and co-existing morbidities surgical intervention was not considered to be an option. The patient died 4 days after the carotid stenting procedure, post-mortem examination revealed infarction of the ileum and caecum. The learning outcomes are if performing endovascular therapy in a patient with diffuse atherosclerotic disease early consideration of intestinal ischaemia should be given to any patient who presents with acute post-procedural abdominal pain

185

Endovascular Management of Delayed Complete Graft Thrombosis After Endovascular Aneurysm Repair  

International Nuclear Information System (INIS)

Graft thrombosis rates after endovascular aneurysm repair (EVAR) of abdominal aortic aneurysms vary widely in published series. When thrombosis does occur, it usually involves a single limb and occurs within 3 months of stent-graft insertion. If the entire endoprosthesis is thrombosed, treatment may be challenging because femoro-femoral crossover graft insertion is not an option and a greater volume of thrombus is present, thus making thrombolysis more difficult. We present two cases of delayed thrombosis after EVAR involving the entire stent-graft. These were successfully treated by a combined surgical and endovascular technique, and patency has been maintained in both cases to date.

186

Exclusión percutánea de seudoaneurisma aórtico abdominal traumático desde acceso braquial / Percutaneous exclusion of traumatic abdominal aortic pseudoaneurysm from a brachial approach  

Scientific Electronic Library Online (English)

Full Text Available SciELO Mexico | Language: Spanish Abstract in spanish El seudoaneurisma aórtico abdominal (SAA) es una lesión infrecuente, se describe a la injuria traumática aórtica, como una de sus principales causas, tanto su ruptura como el tratamiento quirúrgico tienen alta morbimortalidad. Por ello, el tratamiento endovascular mediante embolización química o exc [...] lusión con dispositivos, ha surgido como tratamiento alternativo. Sin embargo, existen riesgos como la oclusión de vasos viscerales cercanos al cuello del defecto, embolización del material o ruptura aórtica. Por lo tanto, la elección del material y vía de abordaje, debe ser planeada cuidadosamente en cada caso. Comunicamos un paciente, a quien 10 años después de una herida abdominal por arma de fuego, se le diagnosticó un SAA de 17 x 13 cm, con cuello corto, originado cercanamente al ostium del tronco celíaco, formando un ángulo agudo con el eje aórtico. Realizamos la exclusión del mismo, con un dispositivo diseñado para el cierre de comunicación interauricular (CIA), utilizando el acceso braquial izquierdo, debido a la angulación del cuello del defecto. No hubo complicaciones, a las 72 horas se otorgó alta hospitalaria. El control tomográfico al mes, mostró el falso aneurisma de igual tamaño y sin flujo residual. A los cinco meses de seguimiento, la paciente permanece asintomática. Abstract in english Abdominal aortic pseudoaneurysm (AAP) is a rare lesion, although traumatic aortic injury is described as one of the main causes; both the rupture as the surgical treatment of the defect has high morbidity and mortality. Therefore, endovascular treatment either by chemical embolization or exclusion o [...] f defect with devices has emerged as an alternative treatment. However, there are risks such as occlusion of visceral vessels near the neck of the defect, embolization material or aortic rupture. Therefore, the choice of material and method of approach should be planned carefully in each case. We report a patient who ten years after abdominal wound frearm was diagnosed with AAP 17x13 cm, with short neck originated close to the ostium of the celiac trunk at an acute angle with the aortic axis. We perform the exclusion of the defect with a device designed for closing atrial septal defect from the left brachial access due to the angulation of the neck defect. There were no complications. At 72 hours was granted discharge. A month later, CT scan control showed the false aneurysm of equal size and no residual flow. The monitoring to date is five months and the patient remained asymptomatic.

Ricardo, Gamboa; Raúl E, Ríos-Méndez; Raúl, Solernó; Federico, Giachello; Ángeles, Videla-Lynch; Ricardo A, Sarmiento.

2012-03-01

187

Bilateral paramedian thalamic and mesencephalic infarcts after basilar tip aneurysm coiling: role of the artery of Percheron / Infarto talámico paramedial bilateral y mesencefálico después del tratamiento endovascular de un aneurisma de la punta de la arteria basilar: rol de la arteria de Percheron  

Scientific Electronic Library Online (English)

Full Text Available SciELO Spain | Language: English Abstract in spanish La técnica endovascular para el manejo de aneurismas está ganando auge como una alternativa a la cirugía abierta. Sin embargo, se han descrito diferentes complicaciones tromboembólicas relacionadas con esta modalidad. El flujo sanguíneo al tálamo y al mesencéfalo puede surgir de variaciones anatómic [...] as complejas. La variación infrecuente: "arteria de Percheron", es una rama arterial solitaria que se origina del segmento proximal de una de la arterias cerebrales posteriores. Presentamos un paciente que tuvo un procedimiento endovascular electivo para el tratamiento de un aneurisma de la punta de la arteria basilar; 12 horas después del procedimiento, el paciente estaba clínicamente en coma profundo. La resonancia magnética (RM) cerebral mostró infartos talámicos paramediales bilaterales y mesencefálicos, compatible con la oclusión de la arteria de Percheron. Los eventos tromboembólicos relacionados con el uso de embolización con coil y stents es una rara pero catastrófica secuela. El uso de agentes antiplaquetarios se debe de recomendar en este tipo de situaciones. Cuando existen infartos talámicos paramediales bilaterales y mesencefálicos, la oclusión de la arteria de Percheron se debe de tener en mente. La angiografía puede no ser de mucha utilidad y la falta de visualización de la arteria no excluye su presencia. En este caso los hallazgos en la RM cerebral confirman la presencia de un infarto basado en la distribución anatómica de la arteria de Percheron. Abstract in english Aneurysm embolization using Guglielmi detachable coils (GDC) is gaining acceptance as a viable alternative for surgery in the treatment of aneurysms. Recent reports describe a significant rate of thromboembolic complications. Thalamic and midbrain blood supply can arise from complex anatomical varia [...] tions. The rare variation: "artery of Percheron", is a solitary arterial trunk arising from one of the proximal segments of a posterior cerebral artery and supplies the paramedian thalami and rostral midbrain bilaterally. We describe a patient that underwent elective endovascular treatment for a basilar tip aneurysm using GDC and stents in each PCA; 12 hours later patient was comatose and not following commands. Sequential magnetic resonance imaging (MRI) of brain showed bilateral paramedian thalamic and mesencephalic infarcts presumably secondary to artery of Percheron occlusion. Thromboembolic event related to the use of the GDC embolization and stents is a rare clinical sequelae, but catastrophic. The use of antiplatelets agents should be reinforced in the scenario. When bilateral medial thalamic and midbrain infarcts are found, occlusion of the artery of Percheron should be considered. Angiography may not b helpful and lack of visualization of the artery does not exclude its presence. In this case the MRI findings confirmed the presence of the infarction based on the anatomical distribution.

L., Rangel-Castilla; J., Gasco; B., Thompson; P., Salinas.

2009-06-01

188

A look into the endovascular crystal ball  

DEFF Research Database (Denmark)

This paper summarizes the highlights of the 15th International Workshop of Endovascular Surgery, held in Ajaccio in June 2008. This is an annual event that attracts leading endovascular therapists from both sides of the Atlantic Ocean as well as a contingency from down-under. The layout of this meeting followed the previous events with sessions on carotid artery disease and abdominal and thoracic aortic aneurysms topped up with clinical cases, lower limb ischemia and venous disease. Generally the session takes off by summarising new evidence, followed by questions and discussion. This workshops gives the participants an excellent opportunity to get an updated perspective within these fast developing areas Udgivelsesdato: 2009/4

Schroeder, Torben Veith

2009-01-01

189

Curativos para tratamento de feridas operatórias abdominais: uma revisão sistemática / Dressings for the treatment of abdominal surgical wounds: a systematic review / Los apósitos para el tratamiento quirúrgico de las heridas abdominales: una revisión sistemática  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese O objetivo deste estudo foi identificar o curativo prevalente para o tratamento das feridas operatórias abdominais com complicações, visando buscar evidências que possam subsidiar o desenvolvimento de um protocolo institucional para o tratamento das mesmas. Metodologia: desenvolveu-se uma Revisão Si [...] stemática, que teve como pergunta norteadora "Qual é o curativo prevalente no tratamento dos pacientes com complicações de feridas operatórias (FOs) abdominais?" Foram utilizados MeSH para buscar o maior número de estudos possíveis em sete base de dados eletrônicas. Resultados: a busca nas bases de dados resultou em 6.107 artigos que, após serem submetidos aos testes de relevância, resultaram em 33 estudos que compuseram a amostra. O curativo a VAC foi o mais indicado para tratar FOs abdominais que tiveram complicações. Conclusão: sugerem-se novas pesquisas para que se possa avaliar a efetividade e viabilidade da terapia VAC na nossa realidade. Abstract in spanish El objetivo de este estudio fue identificar los curativos prevalentes en el tratamiento de heridas quirúrgicas abdominales con complicaciones, con la finalidad de obtener evidencias que puedan subsidiar el desarrollo de protocolo institucional para tratamiento de las mismas. Metodología: una Revisió [...] n Sistemática que tuvo como pregunta orientadora ¿Cuál es el curativo prevalente en el tratamiento de los pacientes con complicaciones de heridas operatorias abdominales? Fueron utilizados MeSH para buscar el mayor número de estudios posibles, en siete bases de datos electrónicas. Resultados: La búsqueda en las bases de datos resultó en 6107 artículos, después se realizaron los Test de Relevancia resultando la muestra final de 33 estudios. El uso del curativo VAC es curativo más indicado para tratar FOs abdominales que tuvieron complicaciones. Conclusión: Se sugieren nuevas investigaciones, para que se pueda evaluar la efectividad y viabilidad de la terapia VAC en nuestra realidad. Abstract in english The aim of this study was to identify the dressings used to treat abdominal surgical wounds with complications, in order to look for evidence that supports the development of an institutional protocol for handling these wounds. Methodology: a Systematic Review was developed, which had as a guiding q [...] uestion: What is the prevalent dressing in the treatment of patients with complications in abdominal surgical wounds? The MeSH database was used to search for the largest possible number of studies in seven electronic databases. Results: The search in the databases resulted in 6,107 articles, after being tested for relevance, the result was 33 studies that comprised the sample. The use of the VAC dressing was the best suited to treat abdominal surgical wounds with complications. Conclusion: Further research is suggested, so that the effectiveness and feasibility of VAC therapy in our reality can be assessed.

Carolina Giordani, Silva; Maria da Graça Oliveira, Crossetti.

2012-09-01

190

Percutaneous endovascular reconstruction with endovascular placement for isolated spontaneous dissection of the superior mesenteric artery  

International Nuclear Information System (INIS)

Objective: To evaluate the safety and efficacy of percutaneous endovascular reconstruction with endovascular stent placement for isolated spontaneous dissection of the superior mesenteric artery. Methods: Five patients with isolated spontaneous dissection of the superior mesenteric artery were enrolled in this study. The diagnosis was confirmed by abdominal computed tomography angiography (CTA) and percutaneous transcatheter digital subtraction angiography (DSA) in all the five patients. One asymptomatic case was discovered by medical examination, which was classified to type ? (Sakamoto angiographic categorization). The other four cases were admitted to hospital with acute abdominal pain and diarrhea, which were classified to type ? (1 case) and type ? (3 cases). Fasting together with antiplatelet and anticoagulation therapy was initially employed. Then, percutaneous endovascular reconstruction with stenting was carried out and the patients were kept on antiplatelet therapy. Follow-up checkups with CTA or DSA were conducted at 1, 3 and 6 months after the treatment. Results: Technical success was achieved in all five patients without any complications. Combination of the coil embolization and endovascular stent placement were preformed in 2 cases. The other 3 cases were successfully treated with simple double-stent placement. The clinical symptoms in the four symptomatic patients disappeared within 3 weeks. Follow-up CTA or DSA was adopted in 5 patients. Repeated angiography performed at 3 months after the procedure showed that complete resolution of the dissection and successful restoration of the true lumen with sufficient distal flow of the SMA were obtained in five patients. Conclusion: Percutaneous endovascular reconstruction with stent placement is a feasible and effective treatment for isolated spontaneous dissection of the superior mesenteric artery. (authors)

191

Surgeon Custom-Made Iliac Branch Device to Salvage Hypogastric Artery during Endovascular Aneurysm Repair  

OpenAIRE

Endovascular salvage of the hypogastric artery using iliac branch device (IBD) during endovascular aortic aneurysm repair (EVAR), offers less invasive alternative solution to surgery to prevent pelvic ischemia. We have performed the first Korean surgeon custom-made IBD for this purpose to overcome the limitation of unavailability of the devices in Korea. Four patients with abdominal aortic aneurysm with bilateral common iliac artery aneurysm (CIAA) were treated using custom-made IBDs from Oct...

Park, Young Eun; Lee, Jae Hoon; Yun, Woo Seung; Park, Ki Hyuk

2014-01-01

192

Endovascular stent graft repair of multiple tuberculous thoracoabdominal aneurysms  

Energy Technology Data Exchange (ETDEWEB)

We describe a case of multiple tuberculous aneurysms of the descending thoracic aorta and abdominal aorta repaired with endovascular stent graft. The case was a 47-year-old man who presented with three saccular pseudoaneurysms of aortoiliac bifurcation at computed tomography (CT) scan. Despite of antimycobacterial treatment, these aneurysms grew rapidly and saccular pseudoaneurysm of the descending thoracic aorta was newly seen. A bifurcated stent graft was successfully implanted in the aortoiliac bifurcation. Subsequently, endovascular stent graft was placed well in the descending thoracic aorta. Fourteen months after the procedure, the patient was stable and serial CT images showed regression of aneurysms with ongoing antimycobacterial treatment. Therefore, endovascular stent graft repair with antimycobacterial therapy may be a treatment option in patients with multiple tuberculous aneurysms.

Kim, Sung Jung; Won, Je Hwan [Dept. of Radiology, Ajou University School of Medicine, Suwon (Korea, Republic of)

2014-05-15

193

Endovascular aortal stentgraft implantation - 5-year experience  

International Nuclear Information System (INIS)

Presentation of own experience in the field of endovascular treatment of aneurysms and aortal wall damage, as well as comparison of the value of angio-CT and dimensioning angiography imaging of aneurysms in the aspect of qualification for aortal stentgraft implantation procedures. 133 patients (11 females and 121 males) aged 23 - 82 years underwent endovascular stentgraft implantation procedures preformed as treatment for aortal aneurysms, delamination and posttraumatic damage of the aortal wall. The treated patients were classified as belonging to groups II (35.5%), III (55%) and IV (9.5%) according to ASA. Qualification for endovascular surgery was based on angio-CT and dimensioning angiography. 21 stentgrafts were implanted into the thoracic and 113 into the abdominal aorta. There was no necessity of perioperative removal of the prosthesis in any case. The overall rate of postoperative complications was 9.7 %. The duration of the surgery ranged from 30 to 120 min. Implantation of aortal stentgrafts is a safe method of treatment for aortal aneurysms, delaminations and ruptures. It as also a life-saving procedure in damage of the aortal wall due to trauma. Computed tomography is an essential imaging modality in the diagnostics of aortal abnormalities. Owing to 3D reconstructions of CT images, the aortal anatomy and the exact site of aortal wall damage can be identified. This is very important for correct selection of the stentgraft parameters and makes it possible totgraft parameters and makes it possible to resign from dimensioning angiography. (author)

194

Successful selective angiographic embolisation of a gastroduodenal pseudoaneurysm following penetrating abdominal trauma  

Scientific Electronic Library Online (English)

Full Text Available New endoscopic and endovascular therapies have revolutionised the management of complex traumatic visceral aneurysms. A pseudoaneurysm of the gastroduodenal artery following penetrating abdominal trauma was successfully managed by selective angiographic embolisation. [...

S, Adam; J L, Bruce; G L, Laing; D L, Clarke.

2014-08-01

195

Tratamiento de los defectos de la pared abdominal (gastrosquisis y onfalocele) en el Hospital Universitario San Vicente de Paúl, Medellín, 1998-2006 / Management of abdominal wall defects (gastroschisis and omphalocele) at Hospital Universitario San Vicente de Paúl, in Medellín, Colombia, 1998-2006  

Scientific Electronic Library Online (English)

Full Text Available SciELO Colombia | Language: Spanish Abstract in spanish Introducción:la gastrosquisis y el onfalocele son malformaciones de la pared abdominal en neonatos que, a pesar de sus grandes diferencias, tienen en común el hecho de ser enfermedades graves caracterizadas por la herniación de las vísceras intrabdominales a través de un defecto de la pared abdomina [...] l. Los niños con estas enfermedades se presentan como emergencias quirúrgicas que plantean un reto difícil para el cirujano tratante. Tienen una tasa de mortalidad que oscila entre 20- 40%, aun con el tratamiento apropiado y se asocian a un amplio rango de malformaciones, principalmente en los niños con onfalocele. Objetivo: el objetivo de la presente revisión retrospectiva es describir el tratamientode los pacientes con gastrosquisis y onfalocele, y los resultados con él obtenidos, entre 1998 y 2006, en la Sección de Cirugía Pediátrica del Hospital Universitario San Vicente de Paúl (HUSVP), de Medellín. Pacientes y métodos: se evaluaron todos los pacientes que ingresaron al Servicio de Cirugía Pediátrica del HUSVP con diagnóstico de gastrosquisis u onfalocele, entre el 1 de enero de 1998 y el 31 de diciembre de 2006. Se definió el tipo de tratamiento llevado a cabo y, de acuerdo con este, se revisaron los resultados: las complicaciones posquirúrgicas, tales como infección del sitio operatorio, evisceración, sepsis, íleo e hipertensión intrabdominal; el tiempo de inicio de la vía oral y de la nutrición parenteral total (NPT); la permanencia en la unidad de cuidados intensivos (UCI) y la duración de la estancia hospitalaria. Resultados: se identificaron 55 pacientes, 32 con gastrosquisis y 23 con onfalocele; en todos se hizo tratamiento quirúrgico. En 31 pacientes (56,4%) se hizo cierre primario y en 24 (43,6%), cierre por etapas; en esta última modalidad el procedimiento más utilizado fue el silo (12 niños; (50%). En 42 pacientes (76,4%) se presentaron complicaciones la más frecuente de las cuales fue la sepsis. La frecuencia de complicaciones asociadas al procedimiento quirúrgico fue similar para el cierre primario y el cierre por etapas (49,9% y 49,7%, respectivamente). El inicio de la vía oral fue más temprano para los pacientes tratados con cierre primario. Los pacientes con gastrosquisis requirieron mayor tiempo de estancia en la UCI y en el hospital. Murieron 16 pacientes (29,1%); la mortalidad fue más alta en los que tenían onfalocele (10/23; 43,5%) que en los con gastrosquisis (6/32; 18,8%). Abstract in english Introduction: Gastroschisis and omphalocele are neonatal malformations of the abdominal wall. Despite their great differences, both are severe diseases characterized by herniation of viscera through the defect in the abdominal wall. Children with these defects present as surgical emergencies that po [...] se a difficult challenge to the attending surgeon. Even with appropriate management, the mortality rate is between 20-40%. Omphalocele and, to a lesser degree gastroschisis, are associated with a wide range of malformations. Objective: The aim of this retrospective review was to describe the management of children with gastroschisis or omphalocele, and the results obtained with it, at the Pediatric Surgery Section, Hospital Universitario San Vicente de Paúl, in Medellin, Colombia. Patients and methods: We evaluated the charts of all patients admitted to the Pediatric Surgery Section, between January 1, 1998 and December 31, 2006, with a diagnosis of gastroschisis or omphalocele. The type of treatment was defined as either primary closure or closure by stages; accordingly, we reviewed the results of the operation, the surgical complications (surgical site infection, evisceration, sepsis, ileus and intraabdominal hypertension), the time of onset of oral and total parenteral nutrition (TPN), and the duration of hospital and UCI stay. Results: 55 patients were identified, 32 with gastroschisis and 23 with omphalocele, all of whom were surgically treated. In 31 patients (56.4%) primary closure w

Míriam Natalia, Herrera Toro; María Elena, Arango Rave; Paula María, Jaramillo Gómez.

2010-09-01

196

Repair of ruptured abdominal aortic aneurysms with bifurcated endografts: a single-center study  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: English Abstract in english OBJECTIVE: The aim of this study was to describe our early experience in the treatment of ruptured abdominal aortic aneurysms with bifurcated endografts. We report on our initial twelve-month experience using this approach. METHODS: Clinical data on patients with ruptured abdominal aortic aneurys [...] ms treated at a single tertiary center in Brazil were prospectively recorded. The eligibility for endovascular treatment was evaluated by computed tomography scanning and anatomical features were determined based on the method of treatment. RESULTS: From February 2012 to January 2013 (12 months), 28 consecutive patients (mean age 67.2 years, range 45-85 years) underwent treatment for ruptured abdominal aortic aneurysms at our hospital. Eighteen patients (64.3%) were suitable for and underwent endovascular treatment with bifurcated endografts (16 patients) or aortouniiliac endografts (two patients). Ten patients who were considered unsuitable for endograft repair underwent open repair. Seven patients were classified as hemodynamically unstable (Endovascular, 5; Open, 2), and 21 were classified as stable (Endovascular, 13; Open, 8). The overall 30-day mortality rate associated with endovascular treatment was 27.8% (stable, 18.7%; unstable, 40%) and the rate associated with open repair was 50% (stable, 37.5%; unstable, 100%). CONCLUSIONS: In this study, the suitability of patients for endovascular repair of ruptured abdominal aortic aneurysms was high and the overall results of endovascular treatment remain encouraging. Indeed, bifurcated endografts are a feasible option for treating anatomically eligible ruptured abdominal aortic aneurysms.

André Brito, Queiroz; Karina Paula Domingos Rosa, Schneidwind; Grace Carvajal, Mulatti; Fábio Rodrigues Ferreira Espirito, Santo; Paulo Sassaki, Neto; Inez Ohashi, Torres; Nelson, De Luccia.

2014-06-01

197

Endovascular treatment of thoracic aortic diseases  

Directory of Open Access Journals (Sweden)

Full Text Available Bacground/Aim. Endovascular treatment of thoracic aortic diseases is an adequate alternative to open surgery. This method was firstly performed in Serbia in 2004, while routine usage started in 2007. Aim of this study was to analyse initial experience in endovacular treatment of thoracic aortic diseses of three main vascular hospitals in Belgrade - Clinic for Vascular and Endovascular Surgery of the Clinical Center of Serbia, Clinic for Vascular Surgery of the Military Medical Academy, and Clinic for Vascular Surgery of the Institute for Cardiovascular Diseases “Dedinje”. Methods. Between March 2004. and November 2010. 41 patients were treated in these three hospitals due to different diseases of the thoracic aorta. A total of 21 patients had degenerative atherosclerotic aneurysm, 6 patients had penetrating aortic ulcer, 6 had posttraumatic aneurysm, 4 patients had ruptured thoracic aortic aneurysm, 1 had false anastomotic aneurysm after open repair, and 3 patients had dissected thoracic aneurysm of the thoracoabdominal aorta. In 15 cases the endovascular procedure was performed as a part of the hybrid procedure, after carotidsubclavian bypass in 4 patients and subclavian artery transposition in 1 patient due to the short aneurysmatic neck; in 2 patients iliac conduit was used due to hypoplastic or stenotic iliac artery; in 5 patients previous reconstruction of abdominal aorta was performed; in 1 patient complete debranching of the aortic arch, and in 2 patients visceral abdominal debranching were performed. Results. The intrahospital mortality rate (30 days was 7.26% (3 patients with ruptured thoracic aneurysms died. Endoleak type II in the first control exam was revealed in 3 patients (7. 26%. The patients were followed up in a period of 1-72 months, on average 29 months. The most devastating complication during a followup period was aortoesofageal fistula in 1 patient a year after the treatment of posttraumatic aneurysm. Conversion was performed with explantation of stent-graft and open aortic in situ recontruction, followed by esophagectomy and the creation of cervical and gastrical stoma. Conclusion. Having in mind initial results of the 3 main vascular clinics in Belgrade, Serbia, economical situation in our country, as well as the published international results, endovascular treatment of thoracic aortic diseases is indicated in hemodinamicaly unstable patients with acute traumatic aneurysm, or in stabile patients older than 65, as well as in case of chronic diseases of the thoracic aorta in patients with significant comorbid conditions or in patients older than 65 years. Endovascular procedures on the thoracic aorta could be performed, hower, only in high-volume centers with experience in routine open surgery of thoracic aorta.

Davidovi? Lazar

2013-01-01

198

Endovascular Treatment Strategies in Aortoiliac Occlusion  

International Nuclear Information System (INIS)

The aim of this study was to report our experience in endovascular treatment of total aortoiliac occlusion. Five patients who underwent endovascular recanalization procedures including manual aspiration thrombectomy, balloon angioplasty, and stent placement for total aortoiliac occlusion in a 4-year period were reviewed retrospectively. The mean age of patients was 51 years (range, 43 to 58 years). All patients had abdominal aorta and bilateral common iliac artery occlusion with or without external iliac artery occlusion. All patients either had a contraindication to surgery or refused it. Initial technical success was obtained in four of five (80%) patients. Endovascular techniques were successful in four patients who had good distal runoff and short-segment aortoiliac occlusion, but failed in a patient who had the worst distal runoff and long-segment aortoiliac occlusion. We observed two major complications, one of which was bilateral rupture of the common iliac arteries treated with covered stent placement. Another patient had extension of intra-aortic thrombus into the iliac stent after primary stenting. This was successfully treated with manual aspiration thrombectomy. Aortic and iliac stents remained patent during the follow-up period (median, 18 months; range, 3 to 26 months) in four patients. Primary patency rates at 6, 12, and 24 months were all 80%. In conclusion, endovascular treatment can be an alternative for aortoiliac occlusion in selected patients. Shooiliac occlusion in selected patients. Short- to midterm follow-up so far is satisfactory. Removal of intra-aortic thrombus with manual aspiration thrombectomy before balloon angioplasty and/or stenting is possible and a good alternative to thrombolysis.

199

Tratamento endovascular de aneurisma de ilíaca roto: relato de caso Endovascular treatment of a ruptured iliac aneurysm: case report  

Directory of Open Access Journals (Sweden)

Full Text Available A taxa de mortalidade cirúrgica do aneurisma de ilíaca roto é similar à do aneurisma de aorta abdominal roto, devido à sua localização profunda na pelve, dificuldade de exposição distal da ilíaca decorrente do hematoma, bridas devido a laparotomia prévia e proximidade com ureter e estruturas venosas. O objetivo do presente estudo é enfatizar o procedimento endovascular como mais uma opção na correção dessas lesões. Relata-se o caso de um paciente de 60 anos de idade, submetido a derivação com enxerto aorto-biilíaco prévio com prótese há 5 anos, por aneurisma de aorta abdominal infra-renal, apresentando rotura de aneurisma em segmento remanescente da ilíaca comum esquerda. Estava hemodinamicamente estável após ressuscitação com fluidos e foi submetido ao tratamento endovascular de urgência, com a exclusão do aneurisma e ausência de vazamentos.The surgical mortality rate of ruptured iliac aneurysms is similar to ruptured abdominal aortic aneurysms in terms of their location deep in the pelvis, difficult access to the distal iliac artery due to hematoma, adherences due to prior laparotomy and proximity of the ureter and venous structures. This study aims at highlighting the endovascular procedure as an alternative in the correction of this lesion. We report the case of a patient submitted to aortobiiliac prosthetic graft due to infrarenal abdominal aortic aneurysm 5 years ago, who presented with a ruptured aneurysm in the remaining segment of the left common iliac artery. The patient was hemodynamically stable after fluid replacement therapy and was submitted to urgent endovascular treatment. The treatment resulted in the exclusion of the aneurysm without endoleaks.

Adinaldo Adhemar Menezes da Silva

2007-03-01

200

Tratamento endovascular de aneurisma de ilíaca roto: relato de caso / Endovascular treatment of a ruptured iliac aneurysm: case report  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Languages: English, Portuguese Abstract in portuguese A taxa de mortalidade cirúrgica do aneurisma de ilíaca roto é similar à do aneurisma de aorta abdominal roto, devido à sua localização profunda na pelve, dificuldade de exposição distal da ilíaca decorrente do hematoma, bridas devido a laparotomia prévia e proximidade com ureter e estruturas venosas [...] . O objetivo do presente estudo é enfatizar o procedimento endovascular como mais uma opção na correção dessas lesões. Relata-se o caso de um paciente de 60 anos de idade, submetido a derivação com enxerto aorto-biilíaco prévio com prótese há 5 anos, por aneurisma de aorta abdominal infra-renal, apresentando rotura de aneurisma em segmento remanescente da ilíaca comum esquerda. Estava hemodinamicamente estável após ressuscitação com fluidos e foi submetido ao tratamento endovascular de urgência, com a exclusão do aneurisma e ausência de vazamentos. Abstract in english The surgical mortality rate of ruptured iliac aneurysms is similar to ruptured abdominal aortic aneurysms in terms of their location deep in the pelvis, difficult access to the distal iliac artery due to hematoma, adherences due to prior laparotomy and proximity of the ureter and venous structures. [...] This study aims at highlighting the endovascular procedure as an alternative in the correction of this lesion. We report the case of a patient submitted to aortobiiliac prosthetic graft due to infrarenal abdominal aortic aneurysm 5 years ago, who presented with a ruptured aneurysm in the remaining segment of the left common iliac artery. The patient was hemodynamically stable after fluid replacement therapy and was submitted to urgent endovascular treatment. The treatment resulted in the exclusion of the aneurysm without endoleaks.

Adinaldo Adhemar Menezes da, Silva; Luis Fernando, Reis; Daniel Gustavo, Miquelin; Priscilla Yukiko, Sano; Vlanna Sales, Pereira; José Maria Pereirade, Godoy.

2007-03-01

201

Abdominal rigidity  

Science.gov (United States)

Abdominal rigidity is stiffness of the muscles in the belly area, which can be felt when touched or pressed. ... when you are touched and you tighten the muscles to "guard" ... rigidity may occur along with: Abdominal tenderness Nausea Pain ...

202

Endovascular treatment of posterior circulation aneurysms.  

Science.gov (United States)

Endovascular techniques are well suited for the treatment of posterior circulation aneurysms. This review describes the endovascular management of these aneurysms and discusses relevant technical advances. PMID:24617934

Eller, Jorge L; Dumont, Travis M; Mokin, Maxim; Sorkin, Grant C; Levy, Elad I; Snyder, Kenneth V; Nelson Hopkins, L; Siddiqui, Adnan H

2014-04-01

203

Rat endovascular perforation model.  

Science.gov (United States)

Experimental animal models of aneurysmal subarachnoid hemorrhage (SAH) have provided a wealth of information on the mechanisms of brain injury. The rat endovascular perforation (EVP) model replicates the early pathophysiology of SAH and hence is frequently used to study early brain injury following SAH. This paper presents a brief review of historical development of the EVP model and details the technique used to create SAH and considerations necessary to overcome technical challenges. PMID:25213427

Sehba, Fatima A

2014-12-01

204

Chronic abdominal pain--a radiological solution.  

Science.gov (United States)

Chronic mesenteric ischaemia is not an uncommon disorder. It is associated with high morbidity and mortality. It presents with chronic abdominal pain and the diagnosis is often missed because of nonspecific clinical findings and limitations of diagnostic studies. Although surgery has been considered to be the mainstay of treatment, it is associated with significant morbidity. We report two cases of chronic mesenteric ischaemia managed effectively with endovascular therapy with no morbidity and good long term pain relief. PMID:20649103

Jain, Paresh; Gandhi, Vidhyachandra; Marar, Shaji; Nagral, Aabha; Nagral, Sanjay

2010-01-01

205

Abdominal aortic aneurysm repair complicated by infection with Clostridium septicum.  

Science.gov (United States)

Aortic stent-graft infection after endovascular abdominal aortic aneurysm (AAA) repair is an uncommon, but very serious complication with potentially devastating consequences.(1) Traditional open techniques of repair of AAA demonstrate an infection rate of 0.5-3%. The exact rate of infection with endovascular repair is unknown, but literature review demonstrates an overall incidence of 0.43-1.17% retrospectively.(2,3) Etiology of endovascular graft infections typically results from flora derived from the skin or gastrointestinal tract.(4)Clostridium septicum is a naturally occurring anaerobic bacterium native to the gastrointestinal tract. It is typically associated with spontaneous nontraumatic gas gangrene owing to bacteremia from the gastrointestinal tract with an incidence rate of 0.07%.(5) To our knowledge, this is the first reported case of endovascular AAA graft infection owing to Clostridium septicum species. PMID:21620673

Colwick, Sarah E; Alkhoury, Fuad; Martin, Jeremiah T; Ferneini, Antoine M

2011-08-01

206

Endovascular treatment in pregnancy  

International Nuclear Information System (INIS)

There is an increased risk of stroke during pregnancy and the puerperium. Decisions should be made immediately upon transfer to each institution, particularly with respect to when and how to treat the patient. This review highlights the feasibility of endovascular treatment in pregnancy. Most of the pharmaceutical agents and therapeutic devices used in clinical practice can be utilized in pregnant patients. Comprehensive information on the benefits and risks of treatment should be explained to the patient and her family, with particular attention to the safety of the mother and fetus. Radiation exposure to the fetus is also a concern; the hazard can be minimized with optimal protection. Several studies have demonstrated that conventional procedures do not cause serious radiation exposure exceeding the threshold of safety to the fetus. Endovascular therapy can be safely performed for the treatment of acute stroke as in non-pregnant patients with adequate attention to pharmaceutical agents and shielding from radiation. In contrast to therapy for acute stroke, preventive endovascular treatment for asymptomatic lesions remains controversial. Several conditions, such as cerebral aneurysms and arteriovenous malformations, are known to bleed more frequently in pregnancy, but whether the benefits of preventive treatment outweigh the associated risks is unknown. The decision for preventive treatment should be carefully made on a case-by-case basis after extensive discussion with the patient. (author)

207

Endovascular repair of para-anastomotic aortoiliac aneurysms.  

LENUS (Irish Health Repository)

The purpose of this study is to evaluate the use of endovascular stent grafts in the treatment of para-anastomotic aneurysms (PAAs) as an alternative to high-risk open surgical repair. We identified all patients with previous open aortic aneurysm repair who underwent infrarenal endovascular aneurysm repair (EVAR) at our institution from June 1998 to April 2007. Patient demographics, previous surgery, and operative complications were recorded. One hundred forty-eight patients underwent EVAR during the study period and 11 patients had previous aortic surgery. Of these 11 redo patients, the mean age was 62 years at initial surgery and 71 years at EVAR. All patients were male. Initial open repair was for rupture in five (45%) patients. The average time between initial and subsequent reintervention was 9 years. All patients were ASA Grade III or IV. Fifty-five percent of the PAAs involved the iliac arteries, 36% the abdominal aorta, and 9% were aortoiliac. Ten patients had endovascular stent-grafts inserted electively, and one patient presented with a contained leak. Aorto-uni-iliac stent-grafts were deployed in seven patients, and bifurcated stent-grafts in four patients. A 100% successful deployment rate was achieved. Perioperative mortality was not seen and one patient needed surgical reintervention to correct an endoleak. Endovascular repair of PAAs is safe and feasible. It is a suitable alternative and has probably now become the treatment of choice in the management of PAAs.

Tsang, Julian S

2009-11-01

208

Quantification of abdominal aortic deformation after EVAR  

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Quantification of abdominal aortic deformation is an important requirement for the evaluation of endovascular stenting procedures and the further refinement of stent graft design. During endovascular aortic repair (EVAR) treatment, the aortic shape is subject to severe deformation that is imposed by medical instruments such as guide wires, catheters, and, the stent graft. This deformation can affect the flow characteristics and morphology of the aorta which have been shown to be elicitors for stent graft failures and be reason for reappearance of aneurysms. We present a method for quantifying the deformation of an aneurysmatic aorta imposed by an inserted stent graft device. The outline of the procedure includes initial rigid alignment of the two abdominal scans, segmentation of abdominal vessel trees, and automatic reduction of their centerline structures to one specified region of interest around the aorta. This is accomplished by preprocessing and remodeling of the pre- and postoperative aortic shapes before performing a non-rigid registration. We further narrow the resulting displacement fields to only include local non-rigid deformation and therefore, eliminate all remaining global rigid transformations. Finally, deformations for specified locations can be calculated from the resulting displacement fields. In order to evaluate our method, experiments for the extraction of aortic deformation fields are conducted on 15 patient datasets from endovascular aortic repair (EVAR) treatment. A visual assessment of the registration results and evaluation of the usage of deformation quantification were performed by two vascular surgeons and one interventional radiologist who are all experts in EVAR procedures.

Demirci, Stefanie; Manstad-Hulaas, Frode; Navab, Nassir

2009-02-01

209

Abdominal CT  

International Nuclear Information System (INIS)

Computed tomography (CT) has proven useful in the evaluation of anatomy and a variety of lesions in the abdomen. Although abdominal CT has a lot of merits, it has several demerits as well. One of the demerits is difficulty to determine origin of large abdominal tumors. One of the merits is improvement of the ability to evaluate abdominal vascular anatomy and pathology, using short time scans following a bolus injection of intravascular contrast medium. (author)

210

Endovascular repair of aortic disease: a venture capital perspective.  

Science.gov (United States)

Endovascular devices for the treatment of abdominal and thoracic aortic disease are poised to become the next $1 billion medical device market. A shift from open repair to endovascular repair, advances in technology, screening initiatives, and new indications are driving this growth. Although billion-dollar medical device markets are rare, this field is fraught with risk and uncertainty for startups and their venture capital investors. Technological hurdles, daunting clinical and regulatory timelines, market adoption issues, and entrenched competitors pose significant barriers to successful new venture creation. In fact, the number of aortic endografts that have failed to reach commercialization or have been pulled from the market exceeds the number of Food and Drug Administration-approved endografts in the United States. This article will shed some light on the venture capital mind-set and decision-making paradigm in the context of aortic disease. PMID:21326532

Buchanan, Lucas W; Stavropoulos, S William; Resnick, Joshua B; Solomon, Jeffrey

2009-03-01

211

Abdominal Pain  

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... children What is abdominal pain like for my child? Abdominal pain has many different characteristics. The pain may be acute (starting suddenly) or ... hypnosis and kids See YourChild : Pain and Your Child or Teen for more detail ... pain treatments, including links to some simple “how-to’s.” How do ...

212

Tratamento endovascular da persistência do canal arterial em adulto / Patent ductus arteriosus: endovascular treatment in adult patient  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Languages: English, Portuguese Abstract in portuguese A persistência do canal arterial (PCA) é uma anomalia relativamente freqüente e de simples correção. A correção envolve a ligadura do ducto com ou sem a sua secção. A anomalia em adultos pode provocar hipertensão pulmonar persistente e disfunção ventricular. A correção em adultos é controversa e de [...] maior risco. Um caso de correção endovascular com acesso intra-abdominal da PCA em adulto é descrito. Abstract in english The patent ductus arteriosus (PDA) is a common type of congenital heart defect and its correction is simple when performed early in life. Surgery is performed using stitches or clips. In adults, the anomaly can lead to pulmonary hypertension and ventricular dysfunction. Surgery in adults is controve [...] rsial and high-risk. This report describes an alternative endovascular approach in an adult patient.

Diego Felipe, Gaia; José Honório, Palma; Hyung Chun, Kim; José Augusto Marcondes de, Souza; Cláudia Rodrigues, Alves; Enio, Buffolo.

2008-08-01

213

Endovascular surgery in gynecology  

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Full Text Available Endovascular surgery has presented a high evolution since 1960 with Charles Dotter, who changed the concept of catheter utilization as a mean to diagnose and introduce therapeutic in interventionist vascular environment. The first reports of bleeding control of gastrointestinal and transluminal angioplasty input the development of new techniques for endovascular access, and new materials use, such as microcatheters and embolic agents, become this procedure effective and viable for treatment of several pathologies. The embolization of several organs of human body is a procedure carried out for more than 30 years all over the world showing safety, efficacy and of simple execution. In obstetrics and gynecology, particularly, the first reports refer to pelvic hemorrhage control of varied etiology, including pelvic trauma, bladder and gynecology neoplasia, anteriovenous fistulas and puerperal hemorrhages. The embolization of uterine myoma appears in the 1990’s as an alternative for treat of uterine leiomyoma, and a number of studies try to clarify the risks and benefits of this procedure. It is a multidisciplinary technique, with diagnostic and indication performed by gynecologist and the procedure done by interventional vascular radiologist. This review is a critical analysis of interventionist vascular radiologic methods and its main therapeutic indications in gynecology.

Marcos de Lorenzo Messina

2010-12-01

214

Primary aortoenteric fistula following endovascular aortic repair due to type II endoleak.  

Science.gov (United States)

An 84-year-old female was lost to follow-up after endovascular aneurysm repair at another hospital with known type II endoleak. She later presented with presyncope and hematemesis. A referral center esophagogastroduodenoscopy showed possible duodenal diverticulum. She had recurrent symptoms and repeat computed tomography scan showed air within the aortic sac. At our center, she underwent stent graft explantation and axillofemoral reconstruction for a primary aortoenteric fistula. She was discharged and is doing well 5 months postoperatively. A high degree of suspicion for aortoenteric fistula is imperative in any patient with upper gastrointestinal hemorrhage after open or endovascular abdominal aortic aneurysm repair. PMID:21741790

McPhee, James T; Soybel, David I; Oram, Robert K; Belkin, Michael

2011-10-01

215

Use of the IntuiTrak® Stent-Graft Delivery System for Percutaneous Abdominal Aortic Aneurysm Exclusion: Initial Single-Center Experience  

OpenAIRE

The exclusion of abdominal aortic aneurysms by endovascular techniques has enabled the treatment of patients who have high-risk comorbidities that preclude safe surgical repair. Since the development of the unibody bifurcated endovascular stent-graft for abdominal aortic aneurysm exclusion, remarkable technological improvements have facilitated stent-graft delivery and reduced the required size of the access site. Our initial institutional experience with the use of the Endologix IntuiTrak® ...

Tom, Cindy W.; Krajcer, Zvonimir

2010-01-01

216

Endovascular treatment of a triple paraanastomotic aneurysm after aortobiiliac reconstruction / Tratamento endovascular de triplo aneurisma para-anastomótico após derivação aorto-biilíaca  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: English Abstract in portuguese Relatamos um caso de um paciente de 72 anos não considerado elegível para cirurgia aberta, apresentando aneurismas para-anastomóticos das três anastomoses, 13 anos após uma reconstrução aberta aorto-biilíaca para aneurisma aórtico abdominal. Este paciente foi tratado com sucesso através de abordagem [...] endovascular usando uma endoprótese aorto-uniilíaca esquerda e uma endoprótese tubular ilíaca direita, seguida por derivação cruzada fêmoro-femoral. Este relato ilustra a utilidade de uma abordagem minimamente invasiva para o tratamento desta complicação da cirurgia aórtica aberta e discute questões técnicas relacionadas a dispositivos endovasculares neste contexto em especial. Abstract in english We report a case of a 72-year-old patient considered unfit for open surgery, presenting with paraanastomotic aneurysms of all three anastomoses, 13 years after an open aortobiiliac reconstruction for abdominal aortic aneurysm. This patient was successfully treated with an endovascular approach using [...] a left aortouniiliac endograft and a right iliac tubular endograft, followed by crossover femorofemoral bypass. This report illustrates the usefulness of a minimally invasive approach for solving this complication of aortic open surgery and discusses technical issues related to endovascular devices in this particular setting.

Alexandre Campos Moraes, Amato; Andrea, Kahlberg; Luca, Bertoglio; Germano, Melissano; Roberto, Chiesa.

2008-09-01

217

Endovascular treatment of a triple paraanastomotic aneurysm after aortobiiliac reconstruction Tratamento endovascular de triplo aneurisma para-anastomótico após derivação aorto-biilíaca  

Directory of Open Access Journals (Sweden)

Full Text Available We report a case of a 72-year-old patient considered unfit for open surgery, presenting with paraanastomotic aneurysms of all three anastomoses, 13 years after an open aortobiiliac reconstruction for abdominal aortic aneurysm. This patient was successfully treated with an endovascular approach using a left aortouniiliac endograft and a right iliac tubular endograft, followed by crossover femorofemoral bypass. This report illustrates the usefulness of a minimally invasive approach for solving this complication of aortic open surgery and discusses technical issues related to endovascular devices in this particular setting.Relatamos um caso de um paciente de 72 anos não considerado elegível para cirurgia aberta, apresentando aneurismas para-anastomóticos das três anastomoses, 13 anos após uma reconstrução aberta aorto-biilíaca para aneurisma aórtico abdominal. Este paciente foi tratado com sucesso através de abordagem endovascular usando uma endoprótese aorto-uniilíaca esquerda e uma endoprótese tubular ilíaca direita, seguida por derivação cruzada fêmoro-femoral. Este relato ilustra a utilidade de uma abordagem minimamente invasiva para o tratamento desta complicação da cirurgia aórtica aberta e discute questões técnicas relacionadas a dispositivos endovasculares neste contexto em especial.

Alexandre Campos Moraes Amato

2008-09-01

218

Endovascular Treatment of Ruptured Iliac Aneurysm Previously Treated by Endovascular Means  

International Nuclear Information System (INIS)

A patient with a ruptured iliac aneurysm was admitted to the Emergency Department in hypovolemic shock. He had previously undergone surgical treatment for an infrarenal abdominal aortic aneurysm, which was managed with a terminal-terminal Dacron tube graft. Subsequently, he developed two iliac aneurysms, which were treated endovascularly with two wall-grafts in the right and one wall-graft in the left iliac arteries. He suffered chronic renal failure and arterial hypertension. Contrast-enhanced computed tomography showed rupture of the right iliac aneurysm and dislocation of the two wall-grafts. He was treated in an emergency situation with the implantation of an iliac endograft that bridged the two wall-grafts, which resulted in hemostasis and stabilization of his condition. Five days later, in an elective surgical situation, he was treated with the implantation of an aorto-uni-iliac endograft combined with a femoral-femoral bypass. He was discharged 5 days later in good condition. At the 4 year follow-up visit, the endoprosthesis remained in place with no evidence of an endoleak. In conclusion, overlapping of endografts should be avoided, if possible. Strict surveillance of the endovascularly treated patient remains mandatory

219

Abdominal epilepsy  

International Nuclear Information System (INIS)

Abdominal epilepsy (AE) is a rather uncommon clinical entity in children that might create diagnostic confusion especially when it lacks the typical manifestations of an epileptic seizure. We report the case of a young boy having apparently unexplained episodes of paroxysmal abdominal symptoms with no other suggestion of an underlying epileptic disorder. The case also explains how the clinical presentation can be misleading unless a high index of suspicion is maintained to reach the ultimate diagnosis. (author)

220

Anesthesia Approach in Endovascular Aortic Reconstruction  

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Full Text Available Introduction: We have analyzed our initial results of our anesthesia techniques in our new-onset endovascular aortic reconstruction cases.Patients and Methods: The perioperative data of 15 elective and emergent endovascular aortic reconstruction cases that were operated in 2010-2011 were collected in a database. The choice of anesthesia was made by the risk factors, surgical team’s preferences, type and location of the aortic pathology and by the predicted operation duration. The data of local and general anesthesia cases were compared.Results: Thirteen (86.7% cases were male and 2 (13.3% female. Eleven patients were in ASA Class III. The demographic parameters, ASA classifications, concurrent diseases were similar in both groups. Thirteen (86.7% cases had infrarenal abdominal aortic aneurysm and 2 (13.3% had Type III aortic dissection. The diastolic arterial pressures were lower in general anesthesia group in 20th and 40th minutes’ measurements just like the mean arterial pressure measurements at the 40th, 100th minutes and during the deployment of the graft. Postoperative mortality occurred in 3 (20.0% patients and they all had general anesthesia and they were operated on emergency basis. Postoperative morbidity occurred in four patients that had general anesthesia (acute renal failure, multi-organ failure and pneumonia. The other patient had atrial fibrillation on the 1st postoperative day and was converted to sinus rhythm with amiodarone infusion.Conclusion: Edovascular aortic reconstruction procedures can safely be performed with both general and local anesthesia less invasively compared to open surgery. General anesthesia may be preferred for the better hemodynamic control.

Ay?in Alagöl

2013-03-01

221

Surgical experience of persistent type 2 endoleaks with aneurysmal sac enlargement after endovascular aneurysm repair.  

Science.gov (United States)

Herein, we present a case of a successful treatment of persistent type 2 endoleaks associated with aneurysmal sac enlargement after endovascular aneurysm repair in an elderly patient. We confirmed the diagnosis by abdominal computed tomography and selective angiography revealing an 11.0-cm aneurysm sac with type 2 endoleaks. An attempt for the endovascular embolization of collateral arteries was unsuccessful due to anatomic variations and their multiple complex communications. Instead, transperitoneal sacotomy and direct suturing on the feeding target vessels was successfully performed without any endograft damage. In conclusion, sacotomy appears to be a feasible therapeutic substitute where endovascular or other techniques have a high risk of failure and lead to unsuccessful results. PMID:24782972

Bang, Seung Ho; Park, Jae Bum; Chee, Hyun Keun; Kim, Jun Seok; Jang, Il Soo

2014-04-01

222

Endovascular approach to acute aortic trauma  

Directory of Open Access Journals (Sweden)

Full Text Available Traumatic thoracic aortic injury remains a major cause of death following motor vehicle accidents. Endovascular approaches have begun to supersede open repair, offering the hope of reduced morbidity and mortality. The available endovascular technology is associated with specific anatomic considerations and complications. This paper will review the current status of endovascular management of traumatic thoracic aortic injuries.

Riyad Karmy-Jones, Desarom Teso, Nicole Jackson, Lisa Ferigno, Robert Bloch

2009-12-01

223

Treatment of aneurysms rupture during endovascular embolization  

International Nuclear Information System (INIS)

Objective: To evaluate the treatment of aneurysms rupture during endovascular embolization. Methods: Nine aneurysms ruptured during the embolization and were treated with endovascular embolization. The reasons of aneurysms rupture during embolization, the prevention and the first aid after aneurysms rupture were analysed. Results: Seven patients recovered and 2 died. Conclusions: The optimal treatment of aneurysms rupture during endovascular embolization is effective. (authors)

224

Aneurisma de la aorta abdominal: controversias y tendencias en su diagnóstico y manejo / Abdominal aortic aneurysms: Trends and controversies in management  

Scientific Electronic Library Online (English)

Full Text Available SciELO Colombia | Language: Spanish Abstract in spanish Los aneurismas de aorta abdominal son una alteración frecuente en poblaciones con edad mayor de 65 años. Si se tiene en cuenta que la mayoría de los casos son asintomáticos, esta condición debería ser tamizada en todo paciente con factores de riesgo. Su tratamiento se fundamenta en el riesgo de rupt [...] ura y la mortalidad asociada. El abordaje quirúrgico está indicado siempre que el paciente presente síntomas o complicaciones asociadas (embolia distal, efecto compresivo en estructuras adyacentes) o cuando el diámetro del aneurisma supere los 5,5 cm. Las opciones de manejo consisten en un abordaje convencional (vía abierta) o en un abordaje intravascular. La decisión debe basarse en un proceso individualizado en el que se consideren las enfermedades concomitantes, las preferencias del paciente y la experiencia del equipo médico. Con este objetivo, se revisará el conocimiento actual respecto al manejo de aneurismas menores de 5,5 cm de diámetro, y las nuevas tendencias en cuanto a terapias farmacológicas y a modificaciones del estilo de vida, que han probado ser protectoras. El artículo incluye una revisión de la literatura y la presentación de un caso clínico. Abstract in english The prevalence of abdominal aortic aneurysms (AAA) increases with age, especially after 65 years. Screening for this pathology should be performed in every patient with known risk factors, considering that most cases are asymptomatic. Surgical treatment is the mainstay therapy, based upon the risk o [...] f rupture and the associated high mortality rates. Surgical repair is indicated as long as the patient presents with symptoms or complications derived from the AAA (distal embolization, compressive effect on adjacent structures) or when aneurysm diameter is greater than 5.5cm. Surgical options are conventional open aneurysm repair or endovascular aneurysm repair (EVAR). Treatment decisions should be individually considered according to comorbidities, experience of the medical team and the patient’s preferences. Current recommendations regarding small aneurysms (

Jairo, Ramírez; Marcos E, Pozo.

2010-12-01

225

Desafios endovasculares aórticos: cirurgia de recurso em patologia aórtica / Challenging aortic procedures: bailout techniques  

Scientific Electronic Library Online (English)

Full Text Available SciELO Portugal | Language: Portuguese Abstract in portuguese A técnica endovascular é uma reconhecida alternativa à cirurgia convencional, no tratamento da patologia aneurismática aorto-ilíaca. Alguns casos, no entanto, pelas suas especifi cidades anatómicas e/ou clínicas, constituem desafi os técnicos que requerem soluções complexas no seu tratamento. Os aut [...] ores apresentam 3 casos clínicos, tratados na sua Instituição entre Janeiro de 2008 e Dezembro de 2011, onde foram encontradas soluções pouco usuais no tratamento endovascular de aneurismas da aorta torácica e da aorta abdominal. Foram utilizadas alternativas como a técnica de Chimney e de Funnel. Não ocorreu mortalidade relacionada com a doença aneurismática em nenhum dos casos. Os casos clínicos apresentados demonstram a exequibilidade das técnicas assim como os detalhes técnicos inerentes a cada caso. Abstract in english The endovascular technique is now an alternative to conventional surgery in the treatment of aortoiliac aneurysms, especially for patients at high surgical risk. In some cases, however, due to their anatomical and/or clinical features, none of the conventional options are suitable, requiring complex [...] solutions. The authors present 3 cases reports, treated at their institution between January 2008 and December 2011, in which were used unusual solutions for the endovascular treatment of the thoracic and abdominal aortic aneurysms. The alternative techniques used were the Chimney and the Funnel. There was no aneurysm related mortality. This article set forth the techniques details and feasibility.

Gonçalo R., Alves; Leonor, Vasconcelos; Hugo, Rodrigues; Nelson, Oliveira; Frederico, Gonçalves; Mª Emília, Ferreira; João A., Castro; L. Mota, Capitão.

2013-12-01

226

Endovascular treatment of PICA aneurysms  

Energy Technology Data Exchange (ETDEWEB)

Endovascular treatment of aneurysms of the posterior inferior cerebellar artery (PICA) avoids manipulation of the brainstem or lower cranial nerves and should therefore carry a lower risk of neurological morbidity than surgical clipping. We reviewed our experience of 23 patients with PICA aneurysms treated by endovascular occlusion with Guglielmi detachable coils and documented their long-term outcome on follow-up. We observed a 28 day procedure-related neurological morbidity of 13% (3/23 patients). One patient suffered permanent neurological complications. There were no procedure-related deaths. None of our patients suffered a re-bleed from their treated aneurysms. Our series shows endovascular treatment of ruptured PICA aneurysms to be safe and effective. (orig.)

Mukonoweshuro, W.; Laitt, R.D.; Hughes, D.G. [Radiology Dept., Greater Manchester Neurosciences Unit, Hope Hospital, Salford, Manchester (United Kingdom)

2003-03-01

227

Hematomas espontáneos de la pared abdominal Spontaneous Hematomas of the abdominal wall  

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Full Text Available Introducción: El hematoma espontáneo de la pared abdominal (HEPA es una entidad de aparición infrecuente y de difícil diagnóstico debido a la similitud clínica con otros procesos agudos. Suele aparecer en pacientes que siguen tratamiento anticoagulante y se caracteriza por su forma de presentación brusca como dolor abdominal agudo. La cirugía puede evitarse en la mayoría de los casos si se diagnostica correctamente mediante pruebas de imagen. Observaciones clínicas: Presentamos 12 casos de HEPA tratados en nuestro Servicio entre los años 1999 y 2005, y realizamos una revisión de esta entidad en cuanto a etiología, factores desencadenantes, diagnóstico y tratamiento. Conclusión: El tratamiento del HEPA debe ser conservador, reservando la cirugía para aquellos casos que presenten deterioro hemodinámico por sangrado activoIntroduction: Spontaneous hematoma of the abdominal wall is infrequent and difficult to diagnose due to its clinical similarity with other acute processes. It is usually associated with patients undergoing anticoagulant therapy and is characterized for its form of abrupt presentation like acute abdominal pain. Surgery can be avoided in most patients if hematoma is correctly diagnosed by imaging tests. Clinical observations: We present 12 cases of spontaneous hematoma of the abdominal wall from 1999 through 2005 and we review the etiology, precipitating factors, diagnosis and treatment of this clinical entity. Conclusion: Treatment of spontaneous hematoma of abdominal wall must be preservative, reserving the surgery for those cases that present hemodynamic compromise by persistent hemorrhage

Rafael Cerdán P

2007-02-01

228

Successful Endovascular Treatment of Traumatic Thoracic Aortic Injury Complicated by Severe Pelvic Hemorrhage  

OpenAIRE

A 25-year-old woman committed suicide with a high-rise fall and presented hypovolemic shock caused by blunt thoracic, abdominal injury. Enhanced computed tomography scan showed the pelvic hemorrhage and the transection of the descending thoracic aorta. After urgent transcatheter arterial embolization to stabilize bleeding from pelvic fracture, the thoracic aortic injury was treated with endovascular aortic repair using a GORE TAG endograft. She recovered from her injuries, and there was no ev...

Ueki, Chikara; Shintani, Tsunehiro; Akimoto, Takehide; Sakaguchi, Genichi

2014-01-01

229

Aortoesophageal Fistula after Endovascular Aortic Aneurysm Repair of a Mycotic Thoracic Aneurysm  

OpenAIRE

Mycotic aneurysms constitute a small proportion of aortic aneurysms. Endovascular repair of mycotic aneurysms has been applied with good short-term and midterm results. However, the uncommon aortoenteric fistula formation remains a potentially fatal complication when repairing such infective aneurysms. We present the case of an 80-year-old woman with thoracic and abdominal aortic mycotic aneurysms, which were successfully treated with endografting. However, the patient presented 3 months late...

Gavens, Elizabeth; Zaidi, Zehra; Al-jundi, Wissam; Kumar, Palepu

2011-01-01

230

Há espaço para o tratamento endovascular nas dissecções crônicas da aorta descendente? Is the endovascular procedure an option for treatment of cronic type B aortic dissections?  

Directory of Open Access Journals (Sweden)

Full Text Available OBJETIVO: Questões relativas a quais pacientes/doenças que efetivamente deveriam ser submetidos ao tratamento endovascular ainda geram controvérsias. O objetivo deste trabalho visa a questionar o tratamento endovascular nas dissecções crônicas tipo B de Stanford. MÉTODOS: No período de 2003 a 2006, 11 pacientes portadores de dissecção crônica da aorta tipo B de Stanford com dilatação somente no tórax (diâmetro > 5,5cm, foram submetidos à colocação de prótese endovascular autoexpansível pela artéria femoral. Todos os pacientes foram submetidos à angiotomografia de controle com 6 meses, 1 ano e após, anualmente, com o intuito de avaliar a presença de fluxo na falsa luz e estudar a evolução dos diâmetros da aorta torácica descendente e abdominal no decorrer do tempo. Para esta análise foram utilizados os testes Anova de duas vias para medidas repetidas e o qui-quadrado com o programa SPSS 13. RESULTADOS: Não houve mortalidade hospitalar. Nenhum paciente apresentou endoleak imediatamente após a operação. Durante o período de seguimento médio de 28 meses/paciente, não houve óbitos, um paciente foi submetido à substituição da aorta tóraco-abdominal e dois aguardam esta mesma intervenção. A endoprótese interrompeu o fluxo na falsa luz no tórax em 72,7% dos pacientes e, no abdome, somente em 18,2%, porém isto não implicou na redução dos diâmetros da aorta torácica nem abdominal. CONCLUSÃO: O tratamento endovascular nas dissecções crônicas tipo B de Stanford parece não ser suficiente para tratar esses pacientes no curto/médio prazo, apesar do tamanho reduzido da amostra estudada.OBJECTIVE: Questions regarding the specific patient/disease that should be submitted to the endovascular procedure still remain unclear. The purpose of this report is to evaluate the endovascular treatment in chronic type B aortic dissections. METHODS: Between 2003 and 2006, 11 patients with chronic type B aortic dissection were submitted to endovascular procedure through femoral artery. All of them were monitored with CT within 6 months, 1 year and afterwars anually. We prospectively evaluated false lumen patency and thoracic and abdominal aortic diameters in each time point. The data comparisons were made using Anova and chi-square tests with SPSS 13. RESULTS: The endovascular stent-graft deployment was technically successful for all patients, with no hospital mortality. During the follow-up period the false lumen flows remained persistent in the thorax in 27.3% of the patients and in the abdomen in 81.8%. However, in all patients, in both segments, the aorta diameter was not significantly changed in size and shape. CONCLUSION: Despite the small number of studied patients, the endovascular procedure for chronic type B aortic dissections does not appear to be an option for the treatment of these patients.

Ricardo Ribeiro Dias

2007-12-01

231

Há espaço para o tratamento endovascular nas dissecções crônicas da aorta descendente? / Is the endovascular procedure an option for treatment of cronic type B aortic dissections?  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Languages: English, Portuguese Abstract in portuguese OBJETIVO: Questões relativas a quais pacientes/doenças que efetivamente deveriam ser submetidos ao tratamento endovascular ainda geram controvérsias. O objetivo deste trabalho visa a questionar o tratamento endovascular nas dissecções crônicas tipo B de Stanford. MÉTODOS: No período de 2003 a 2006, [...] 11 pacientes portadores de dissecção crônica da aorta tipo B de Stanford com dilatação somente no tórax (diâmetro > 5,5cm), foram submetidos à colocação de prótese endovascular autoexpansível pela artéria femoral. Todos os pacientes foram submetidos à angiotomografia de controle com 6 meses, 1 ano e após, anualmente, com o intuito de avaliar a presença de fluxo na falsa luz e estudar a evolução dos diâmetros da aorta torácica descendente e abdominal no decorrer do tempo. Para esta análise foram utilizados os testes Anova de duas vias para medidas repetidas e o qui-quadrado com o programa SPSS 13. RESULTADOS: Não houve mortalidade hospitalar. Nenhum paciente apresentou endoleak imediatamente após a operação. Durante o período de seguimento médio de 28 meses/paciente, não houve óbitos, um paciente foi submetido à substituição da aorta tóraco-abdominal e dois aguardam esta mesma intervenção. A endoprótese interrompeu o fluxo na falsa luz no tórax em 72,7% dos pacientes e, no abdome, somente em 18,2%, porém isto não implicou na redução dos diâmetros da aorta torácica nem abdominal. CONCLUSÃO: O tratamento endovascular nas dissecções crônicas tipo B de Stanford parece não ser suficiente para tratar esses pacientes no curto/médio prazo, apesar do tamanho reduzido da amostra estudada. Abstract in english OBJECTIVE: Questions regarding the specific patient/disease that should be submitted to the endovascular procedure still remain unclear. The purpose of this report is to evaluate the endovascular treatment in chronic type B aortic dissections. METHODS: Between 2003 and 2006, 11 patients with chronic [...] type B aortic dissection were submitted to endovascular procedure through femoral artery. All of them were monitored with CT within 6 months, 1 year and afterwars anually. We prospectively evaluated false lumen patency and thoracic and abdominal aortic diameters in each time point. The data comparisons were made using Anova and chi-square tests with SPSS 13. RESULTS: The endovascular stent-graft deployment was technically successful for all patients, with no hospital mortality. During the follow-up period the false lumen flows remained persistent in the thorax in 27.3% of the patients and in the abdomen in 81.8%. However, in all patients, in both segments, the aorta diameter was not significantly changed in size and shape. CONCLUSION: Despite the small number of studied patients, the endovascular procedure for chronic type B aortic dissections does not appear to be an option for the treatment of these patients.

Ricardo Ribeiro, Dias; Gustavo, Judas; Marco A. P., Oliveira; Luiz M. S., Malbouisson; Alfredo I., Fiorelli; Noedir A. G., Stolf.

2007-12-01

232

[Popliteal artery aneurysm: surgical and endovascular therapy].  

Science.gov (United States)

Aneurysms of the popliteal artery are the most common form of peripheral aneurysm with an incidence of 70-80 %. An enlargement of the popliteal artery of more than 50% of the original diameter is defined as a popliteal artery aneurysm and is found mainly in male patients older than 65 years of age. The incidence is 1%, in 50% of cases is bilateral and in up to 50% in association with other large vessel aneurysms (e.g. abdominal aorta). Differential diagnoses are Baker's cyst, cystic adventitial disease, entrapment syndrome and epitheloid hemangioma. One third of all diagnosed popliteal artery aneurysms are asymptomatic incidental findings, whereas two thirds are conspicuous due to symptoms (acute or chronic ischemia, local compression, rupture). The indications for invasive treatment are given for patients with patent aneurysms at a diameter of more than 2 cm or if a thrombus is present within the aneurysm. Symptomatic popliteal artery aneurysms are always an indication for therapy. Treatment strategies are surgical techniques and endovascular interventions, which both have a similar outcome and graft patency in midterm results. PMID:23494062

Ghotbi, R; Deilmann, K

2013-03-01

233

Tratamiento Antimicrobiano  

Scientific Electronic Library Online (English)

Full Text Available SciELO Venezuela | Language: Spanish Abstract in spanish Las Meningitis Bacterianas Agudas (MBA) siguen constituyendo un capítulo de extraordinario interés dentro de los procesos infecciosos. El conocimiento de la epidemiología local es fundamental. La terapia específica con antibióticos debe ser aplicada en forma precoz, con drogas bactericidas de buena [...] concentración en líquido cefalorraquídeo. El conocimiento de la resistencia de los gérmenes causales de las MBA es capital para el logro de un tratamiento eficaz, buscando la menor morbi-mortalidad posible. Cada paciente debe individualizarse en función de la edad, factores asociados y evolución del caso. Abstract in english Acute bacterial meningitis (ABM) remains a chapter of extraordinary interest in infectious processes. Knowledge of local epidemiology is essential. Specific therapy with the use of antibiotics must be used early, using antibacterial drugs with good concentration in cerebrospinal fluid. Knowledge of [...] the resistance of the causative organisms of the MBA is valuable in achieving an effective treatment, seeking the lowest possible morbidity and mortality. Each patient should be individualized for each patient age, associated factors and its evolution. Treatment should be individualized for each patient age, associated factors and clinical course.

Amando, Martín Peña; Lisbeth, Aurenty; Ángela, Troncone Azocar; José Vicente, Franco Soto.

2010-12-01

234

Abdominal emergencies  

International Nuclear Information System (INIS)

Full text: There are numerous conditions that affect mainly or exclusively the pediatric population. These constitute true emergencies, related to patient's health. Delay in diagnosis and treatment of abdominal non-traumatic emergencies may result in rapid deterioration, peritonitis, sepsis, even death or in severe complications with subsequent morbidity. Abdominal emergencies in children mostly present with pain, tenderness, occasionally coupled by vomiting, fever, abdominal distension, and failure to pass meconium or stools. Diarrhea, blood per rectum, abnormal laboratory tests and lethargy may also be manifestations of acute abdominal conditions. Abdominal emergencies have a different aetiology, depending on age and whether the pain is acute or chronic. Symptoms have to be matched with age and gender. Newborns up to 1 months of age may have congenital diseases: atresia, low obstruction including Hirschsprung's disease, meconium ileus. Meconium plug is one of the commonest cause of low obstruction in newborns that may also develop necrotizing enterocolitis, incarcerated inguinal hernia and mid-gut volvulus. Past the immediate postnatal period, any duodenal obstruction should be considered midgut volvulus until proven otherwise and patients should undergo ultrasonography and/or properly performed upper GI contrast study that records the exact position of the deduno-jejunal junction. Infants 6 months-2 years carry the risk of intussusception, mid-gut volvulus, perforaintussusception, mid-gut volvulus, perforation, acute pyelonephritis. Preschool and school-aged children 2-12 years carry the risk of appendicitis, genito-urinary abnormalities including torsion, urachal abnormalities, haemolytic uremic syndrome and Henoch-Schonlein purpura. Children above 12 years suffer from the same conditions as in adults. Most conditions may affect any age despite age predilection. Abdominal solid organ ultrasonography (US) coupled with gastrointestinal ultrasonography is the principle imaging modality in radiosensitive children and young individuals with abdominal pain. Sensitivity and specificity for US in diagnosing intussusception, midgut volvulus, urinary tract abnormalities and appendicitis is over 90%. US, occasionally with x-rays, usually suffice for an accurate diagnosis. Upper GI contrast studies are indicated in suspected malrotation, volvulus and atypical high obstruction cases. Lower GI contrast studies are indicated in low/colonic obstruction. CT and/or MRI should be reserved for atypical, complex cases when US and conventional radiography are equivocal or inconclusive. The radiologist should engage oneself to act immediately, consider and actively exclude those diagnoses that could be a threat to the child's health or life. The appropriate modality should be chosen and proper technique should be applied. Radiologists should function as clinicians, take initiative and discuss options and alternative diagnoses. Lack of experience should not delay performance of tests. Our job is finished when a diagnostic test has a written report provided that we make sure the child is managed properly.

235

Endovascular treatment of intracranial aneurysms  

International Nuclear Information System (INIS)

The aim of the study was to analyze the results of the endovascular coiling and stenting as current methods for treatment of ruptured and non-ruptured intracranial aneurysms. For a period of 4 years, 132 patients - 55 (42%) male and 77 (58%) female, at average age of 50.7 years, were diagnosed with 189 intracranial aneurysms. One hundred and sixty endovascular interventions were performed, of which 127 coil embolisations, 22 stent placements and 11 reembolisations in previously embolized patients with angiographic data for recanalization. For evaluation of the patient's condition at admission, the Hunt and Hess scale was applied. The Fisher scale was used to classify the subarachnoid hemorrhage based on the CT-scans. Total occlusion was achieved in 93 of the 127 coiled aneurysms in our series (73.2%). Subtotal occlusion of the aneurysmal sack and neck was presented in the rest 34 aneurysms (26.7%) because of their geometric characteristics. In 13 of the 55 follow-up angiographies performed, significant recanalization was identified, which led to 11 reembolisations. We report 10 complications in the series of 160 endovascular interventions (6.25%), namely: intrainterventional aneurysm rupture - 1 case (0.63%); transient vasospasm - 3 cases (1.9%); thromboembolic complications - 5 cases (3.1%); intrainterventional in-stent thrombosis. followed by recanalization - 1 case (0.63%). Overall mortality in our series was 3.35% (5 patients), none of the deaths directly connectents), none of the deaths directly connected to the intervention, but as a result of the poor clinical condition of the patients upon admission. Because of its minimal invasiveness and lower complication rates, the endovascular technique is gaining ground as an alternative to the surgical clipping. Nevertheless the endovascular treatment represents only a component of the healing process of patients with ruptured/unruptured cerebral aneurysms that should be carried out by a multidisciplinary team.

236

Hematomas espontáneos de la pared abdominal / Spontaneous Hematomas of the abdominal wall  

Scientific Electronic Library Online (English)

Full Text Available SciELO Chile | Language: Spanish Abstract in spanish Introducción: El hematoma espontáneo de la pared abdominal (HEPA) es una entidad de aparición infrecuente y de difícil diagnóstico debido a la similitud clínica con otros procesos agudos. Suele aparecer en pacientes que siguen tratamiento anticoagulante y se caracteriza por su forma de presentación [...] brusca como dolor abdominal agudo. La cirugía puede evitarse en la mayoría de los casos si se diagnostica correctamente mediante pruebas de imagen. Observaciones clínicas: Presentamos 12 casos de HEPA tratados en nuestro Servicio entre los años 1999 y 2005, y realizamos una revisión de esta entidad en cuanto a etiología, factores desencadenantes, diagnóstico y tratamiento. Conclusión: El tratamiento del HEPA debe ser conservador, reservando la cirugía para aquellos casos que presenten deterioro hemodinámico por sangrado activo Abstract in english Introduction: Spontaneous hematoma of the abdominal wall is infrequent and difficult to diagnose due to its clinical similarity with other acute processes. It is usually associated with patients undergoing anticoagulant therapy and is characterized for its form of abrupt presentation like acute abdo [...] minal pain. Surgery can be avoided in most patients if hematoma is correctly diagnosed by imaging tests. Clinical observations: We present 12 cases of spontaneous hematoma of the abdominal wall from 1999 through 2005 and we review the etiology, precipitating factors, diagnosis and treatment of this clinical entity. Conclusion: Treatment of spontaneous hematoma of abdominal wall must be preservative, reserving the surgery for those cases that present hemodynamic compromise by persistent hemorrhage

Rafael, Cerdán P; Sandra, Paterna L; María Eugenia, Guillén S; Sonia, Cantín B; Joaquín, Bernal J; Jesús María, Esarte M.

2007-02-01

237

Advances in endovascular approaches to cerebral aneurysms.  

Science.gov (United States)

Recent advancements in all phases of endovascular aneurysm treatment, including medical therapy, diagnostics, devices, and implants, abound. Advancements in endovascular technologies and techniques have enabled treatment of a wide variety of intracranial aneurysms. In this article, technical advances in endovascular treatment of cerebral aneurysms are discussed, with an effort to incorporate a clinically relevant perspective. Advancements in diagnostic tools, medical therapy, and implants are reviewed and discussed. PMID:24402486

Dumont, Travis M; Eller, Jorge L; Mokin, Maxim; Sorkin, Grant C; Levy, Elad I

2014-02-01

238

Endovascular management of peripheral vascular injuries  

International Nuclear Information System (INIS)

Over the past several decades, catheter-based and endovascular techniques have been used with increasing frequency for the management of trauma. Currently, however, there is sparse literature on the management of vascular trauma with endovascular techniques. The endovascular management of vascular trauma seems particularly appealing in the management of blunt truncal injuries, especially in the setting of severe concomitant brain and lung injury. Extremity and neck injuries are probably best handled by traditional methods of surgical proximal and distal control. This paper aims to review current literature with regard to the endovascular management of traumatic vascular injuries, focusing on the regions of neck and extremity. (authors)

239

[Endovascular treatment for cerebral aneurysms].  

Science.gov (United States)

Endovascular therapy for cerebral aneurysms has been possible since the advent of Guglielmi detachable coils. The International Subarachnoid Aneurysm Trial (ISAT) showed that the 1-year outcome of endovascular coiling for ruptured aneurysms was significantly better than that of neurosurgical clipping. After the ISAT study, remarkably high numbers of aneurysms have been treated using coils across the world. Digital subtraction angiography (DSA) system and its road map function are also essential for endovascular therapy. Three-dimensional DSA is helpful in understanding the anatomy of an aneurysm that has to be treated and determining the working angle for coiling. The biplane system is also useful for embolization. Many kinds of coils such as three-dimensional shaped coils and stretch-resistant coils have been invented. These coils, in combination with balloon-or stent-assisted techniques, enable the treatment of difficult aneurysms such as those with wide necks. Bioactive coils allow the healing of aneurysm by promoting tissue reaction. However, it is difficult to cure very large and giant aneurysms even with the new coils. Hence flow-diverting stents and Onyx are being clinically tested for the treatment of such cases. PMID:19803402

Hoya, Katsumi; Hyodo, Akio

2009-09-01

240

Tratamiento percutaneo de aneurismas aorto-ilíacos Percutaneous treatment of aorto-iliac aneurysm  

Directory of Open Access Journals (Sweden)

Full Text Available Introducción: La reparación endovascular de aneurismas abdominales e ilíacos requiere de la introducción de dispositivos de alto calibre (> 16 F mediante denudación de arterias femorales. Mediante una variación técnica, el sistema de sutura arterial percutanea Prostar-XL® (Abbott, EEUU permite el acceso arterial percutaneo evitando la denudación. Objetivo: Analizar la experiencia inicial en el tratamiento percutaneo de aneurismas del territorio aorto-ilíaco. Material y Método: Revisión de las historias clínicas y base de datos de pacientes tratados con sutura arterial percutanea, entre octubre de 2003 y abril de 2008. Resultados: Tratamos 22 pacientes con esta técnica (20 hombres y 2 mujeres. Dieciséis portadores de aneurisma aórtico abdominal, 3 aneurismas ilíacos, 2 reparaciones de endofuga y un aneurisma hipogástrico. La edad promedio fue 72,6 años (rango 56-86. Se utilizó el sistema Prostar XL® para sutura percutanea en 37 arterias femorales. La anestesia más utilizada fue peridural en el 50% de los pacientes. En 7 casos (31,8% se efectuó la operación exclusivamente con anestesia local. El diámetro de los dispositivos de endoprótesis fue de 16 a 23 F. Se obtuvo éxito técnico en 34 cierres (92%. Tres arterias requirieron reparación quirúrgica tradicional. No hubo mortalidad operatoria. Durante el seguimiento (promedio 12,6 meses, rango 1-53 no se registraron falsos aneurismas femorales ni infección. Discusión: El cierre percutaneo en la reparación endovascular de aneurismas aorto-ilíacos es un procedimiento mínimamente invasivo, seguro y efectivo, que permite eventualmente el uso de anestesia local.Introduction: Endovascular repair of aortic (AAA and iliac artery aneurysms requires introduction and deployment of large bore devices (> 16 F through surgical exposure of the femoral artery. The Prostar XL ® arterial suture system allows the introduction of such devices without the need for surgical exposure. Aim: To report our initial experience with percutaneous arterial closure during aneurysm endografting. Methods: We reviewed records and datábase of patients treated with this technique between October2003 and April 2008. Results: We treated 22 patients with this technique (20 men and 2 women, average age 72 years. Sixteen had AAA, 3 iliac artery aneurysm, 1 hypogastric aneurysm and two for endoleak repair. The percutaneous closure device was used in 37 femoral arteries. In 7 patients (31,8% the operation was completed entirely under local anaesthesia. The diameter of the devices ranged between 16 and 23 F. Technical success was obtained in 34 arteries (92%. Three arteries required surgical repair due to inadequate haemostasis (sheaths 18, 21, and 21 F. There was no operative mortality. During follow-up (mean 12,6 months, range 1-53 no false aneurysm or infection at the puncture site has been registered and the patients remain free of complications. Discussion: Percutaneous arterial closure in endovascular aneurysm repair is a safe, minimally invasive and effective procedure which allows resolving theses serious conditions in selected patients.

CARLO ZÚÑIGA G

2008-10-01

241

Tratamiento percutaneo de aneurismas aorto-ilíacos / Percutaneous treatment of aorto-iliac aneurysm  

Scientific Electronic Library Online (English)

Full Text Available SciELO Chile | Language: Spanish Abstract in spanish Introducción: La reparación endovascular de aneurismas abdominales e ilíacos requiere de la introducción de dispositivos de alto calibre (> 16 F) mediante denudación de arterias femorales. Mediante una variación técnica, el sistema de sutura arterial percutanea Prostar-XL® (Abbott, EEUU) permite el [...] acceso arterial percutaneo evitando la denudación. Objetivo: Analizar la experiencia inicial en el tratamiento percutaneo de aneurismas del territorio aorto-ilíaco. Material y Método: Revisión de las historias clínicas y base de datos de pacientes tratados con sutura arterial percutanea, entre octubre de 2003 y abril de 2008. Resultados: Tratamos 22 pacientes con esta técnica (20 hombres y 2 mujeres). Dieciséis portadores de aneurisma aórtico abdominal, 3 aneurismas ilíacos, 2 reparaciones de endofuga y un aneurisma hipogástrico. La edad promedio fue 72,6 años (rango 56-86). Se utilizó el sistema Prostar XL® para sutura percutanea en 37 arterias femorales. La anestesia más utilizada fue peridural en el 50% de los pacientes. En 7 casos (31,8%) se efectuó la operación exclusivamente con anestesia local. El diámetro de los dispositivos de endoprótesis fue de 16 a 23 F. Se obtuvo éxito técnico en 34 cierres (92%). Tres arterias requirieron reparación quirúrgica tradicional. No hubo mortalidad operatoria. Durante el seguimiento (promedio 12,6 meses, rango 1-53) no se registraron falsos aneurismas femorales ni infección. Discusión: El cierre percutaneo en la reparación endovascular de aneurismas aorto-ilíacos es un procedimiento mínimamente invasivo, seguro y efectivo, que permite eventualmente el uso de anestesia local. Abstract in english Introduction: Endovascular repair of aortic (AAA) and iliac artery aneurysms requires introduction and deployment of large bore devices (> 16 F) through surgical exposure of the femoral artery. The Prostar XL ® arterial suture system allows the introduction of such devices without the need for surgi [...] cal exposure. Aim: To report our initial experience with percutaneous arterial closure during aneurysm endografting. Methods: We reviewed records and datábase of patients treated with this technique between October2003 and April 2008. Results: We treated 22 patients with this technique (20 men and 2 women, average age 72 years). Sixteen had AAA, 3 iliac artery aneurysm, 1 hypogastric aneurysm and two for endoleak repair. The percutaneous closure device was used in 37 femoral arteries. In 7 patients (31,8%) the operation was completed entirely under local anaesthesia. The diameter of the devices ranged between 16 and 23 F. Technical success was obtained in 34 arteries (92%). Three arteries required surgical repair due to inadequate haemostasis (sheaths 18, 21, and 21 F). There was no operative mortality. During follow-up (mean 12,6 months, range 1-53) no false aneurysm or infection at the puncture site has been registered and the patients remain free of complications. Discussion: Percutaneous arterial closure in endovascular aneurysm repair is a safe, minimally invasive and effective procedure which allows resolving theses serious conditions in selected patients.

CARLO, ZÚÑIGA G; RENATO, MERTENS M; FRANCISCO, VALDÉS E; ALBRECHT, KRÄMER SCH; LEOPOLDO, MARINÉ M; MICHEL, BERGOEING R; JEANNETTE, VERGARA G; CLAUDIA, CARVAJAL N.

2008-10-01

242

Endovascular pseudoaneurysm repair after distal pancreatectomy with celiac axis resection.  

Science.gov (United States)

Erosive hemorrhage due to pseudoaneurysm is one of the most life-threatening complications after pancreatectomy. Here, we report an extremely rare case of rupture of a pseudoaneurysm of the common hepatic artery (CHA) stump that developed after distal pancreatectomy with en block celiac axis resection (DP-CAR), and was successfully treated through covered stent placement. The patient is a 66-year-old woman who underwent DP-CAR after adjuvant chemoradiotherapy for locally advanced pancreatic body cancer. She developed an intra-abdominal abscess around the remnant pancreas head 31 d after the surgery, and computed tomography (CT) showed an occluded portal vein due to the spreading inflammation around the abscess. Her general condition improved after CT-guided drainage of the abscess. However, 19 d later, she presented with melena, and CT showed a pseudoaneurysm arising from the CHA stump. Because the CHA had been resected during the DP-CAR, this artery could not be used as the access route for endovascular treatment, and instead, we placed a covered stent via the inferior pancreaticoduodenal artery originating from the superior mesenteric artery. After stent placement, cessation of bleeding and anterograde hepatic artery flow were confirmed, and the patient recovered well without any further complications. CT angiography at the 6-mo follow-up indicated the patency of the covered stent with sustained hepatic artery flow. To our knowledge, this is the first reported case of endovascular repair of a pseudoaneurysm that developed after DP-CAR. PMID:24363537

Sumiyoshi, Tatsuaki; Shima, Yasuo; Noda, Yoshihiro; Hosoki, Shingo; Hata, Yasuhiro; Okabayashi, Takehiro; Kozuki, Akihito; Nakamura, Toshio

2013-12-01

243

Endovascular treatment of thoracic aortic aneurysms: a review  

Energy Technology Data Exchange (ETDEWEB)

Open surgical repair is considered the traditional treatment for patients with thoracic aortic aneurysms (TAA). In view of the persistent perioperative mobidity and mortality, endovascular stent-graft placement as a minimally invasive and potentially safer treatment for aneurysm of the descending aorta was introduced in 1992. Since then, progress has been made and several institutions have substantiated the safety and effectiveness of stent grafts in the repair of descending TAAs or type-B aortic dissections. Currently, both custom-designed, home-made, and commercially available stent grafts are used. Prior to placement of the endoprosthesis, three major prerequisites must be considered: the localization and morphology of the aneurysm; the distal vascular access of sufficient size; and a limited tortuosity of the abdominal and thoracic aorta. Although short-term results are encouraging, severe complications, including paraplegia, cerebral strokes, and aortic rupture, have been encountered. The long-term durability of currently available stent-graft systems is nonexistent and material fatigue are of major concern to both surgeons and radiologists. Nevertheless, endovascular stent-graft placement could become the procedure of choice in a substantial number of patients with descending TAA. (orig.)

Thurnher, Siegfried A. [Department of Radiology, University Hospital, Wien (Austria); Grabenwoeger, Martin [Department of Cardio-Thoracic Surgery, University of Vienna (Austria)

2002-06-01

244

Surgical approach of endovascular exclusion for thoracic aortic dissection  

International Nuclear Information System (INIS)

Objective: To evaluate the surgical approach of endovascular exclusion for thoracic dissection. Methods: Thirty-seven cases of Stanford B type thoracic aortic dissection were undergone endovascular exclusion (EVE) and had been studied retrospectively. Preoperative evaluations for delivery arteries, including common femoral artery, iliac artery, and abdominal aorta, were carried out by using duplex ultrasonography (US), computed tomographic angiography (CTA) and magnetic resonance angiography (MRA). Factors such as arterial calibers, stenosis, tortuosity, sclerotic plaque and media dissection were taken into account. Choices of surgical approach were decided after comprehensive consideration of these factors. If the common femoral artery inner diameter was wider than 8 mm, without severe iliac artery stenosis or tortuosity; the common femoral artery should be selected as the delivery artery. In case of severe arterial stenosis and tortuosities, then the common iliac arteries were exposed by retroperitoneal approach and graft was delivered through this artery. Results: Mural sclerotic plaques were more sensitive to be revealed by US, conversely with CTA and MRA in showing stenosis and tortuosity directly and clearly. Utilizing this preoperative evaluating system, all the grafts passed successfully and favourably through the arteries, without any delivery artery associated complications. Conclusions: Using US, CTA and MRA in combination was necessary for preoperative evaination was necessary for preoperative evaluation of the delivery artery. In those with poor femoral artery condition, exposing common iliac artery decidedly is necessary to ensure the procedure favorably and to avoid delivery artery associated complications

245

Incidence of systemic inflammatory response syndrome after endovascular aortic repair  

DEFF Research Database (Denmark)

AIM: The aim of this study was to estimate the incidence of the post-implantation syndrome/systemic inflammatory response syndrome (SIRS) after endovascular aortic repair. METHODS: All patients, undergoing elective primary endovascular repair of an asymptomatic infrarenal abdominal aortic aneurysm during 2007, were retrospectively evaluated for SIRS within the first 5 postoperative days. The only exclusion-criteria were missing data. SIRS was assessed using the criteria defined by the American College of Chest Physicians and Society of Critical Care Medicine Consensus Conference Committee. RESULTS: Sixty-six patients were included, 40 (60%) met the SIRS criteria within the first 5 postoperative days (95% of the 40 patients met the criteria within 3 days). We found no significant differences between the SIRS and the non-SIRS group in baseline characteristics or other data including volume of the contrast media used, type of groin access, adjunctive procedures and duration of surgery. In total, 11 (28%)patients in the SIRS group and 4 (15%) patients in the non-SIRS group underwent re-interventions. Median follow-up period was 26 (range 20-32) months. Thirty-day mortality did not differ in the groups (3% in the SIRS group vs. none in the non-SIRS group). CONCLUSION: The high incidence of SIRS after EVAR is unexpected considering the minimally invasive procedure. Further studies on the cause of this response and measures to attenuate the response seem appropriate.

De La Motte, L; Vogt, K

2011-01-01

246

Technical adjunct for abdominal aortic aneurysm repair in patient with renal transplant.  

Science.gov (United States)

One of the most discussed issues in abdominal aortic surgery in kidney-transplanted patients is represented by organ protection during aortic cross-clamping. We report the case of a kidney-transplanted woman who underwent surgical correction for an abdominal aortic aneurysm after she refused any endovascular approach. To maintain kidney perfusion, during surgical aortic reconstruction, a biopump was chosen. Nowadays, abdominal aortic aneurysm endovascular repair, when feasible, allows avoiding cross-clamping-related renal ischemia, although a potential risk for contrast-induced nephrotoxicity still exists. When open surgical repair is chosen, several different techniques to protect the transplanted organ have been proposed, with different potential advantages and results. In the case we reported, the use of biopump allowed an effective protection from ischemia, minimizing perioperative stress and complications. PMID:24531028

Rizzo, Anna R; Sirignano, Pasqualino; Capoccia, Laura; Menna, Danilo; Ippoliti, Francesco; Speziale, Francesco

2014-10-01

247

Vascular training and endovascular practice in Europe  

DEFF Research Database (Denmark)

OBJECTIVE: To evaluate the influence of the status of vascular surgery (VS) training paradigms on the actual practice of endovascular therapy among the European countries. METHODS: An email-based survey concerning vascular surgery training models and endovascular practices of different clinical specialties was distributed to a VS educator within 14 European countries. European Vascular and Endovascular Monitor (EVEM) data also were processed to correlate endovascular practice with training models. RESULTS: Fourteen questionnaires were gathered. Vascular training in Europe appears in 3 models: 1. Mono-specialty (independence): 7 countries, 2. Subspecialty: 5 countries, 3. An existing specialty within general surgery: 2 countries. Independent compared to non-independent certification shortens overall training length (5.9 vs 7.9 years, p=0.006), while increasing overall training devoted specifically to VS (3.9 vs 2.7 years, p=0.008). Among countries with independent certification an average of 76% of aortic and 50% of peripheral endovascular procedures are performed by vascular surgeons, while the corresponding values, for countries with a non-independent certification, are 69% and 36% respectively. Countries with independent vascular certification, despite their lower average endovascular index (procedures per 100,000 population), reported a higher growth rate of aortic endovascular procedures (VS independent 132% vs VS non-independent 87%), within a four-year period (2003-2007). Peripheral endovascular procedures, though, have similar growth rates in both country groups (VS independent 62% vs VS non-independent 60%). CONCLUSIONS: In European countries with VS as an independent specialty, vascular surgeons have a shorter total training period but spend more time in VS training, although they may not undertake a greater proportion of the endovascular procedures their countries appear to have adopted endovascular technologies more rapidly compared to the ones with non-independent VS curricula. Whether such differences influence patient outcomes requires investigation in future studies Udgivelsesdato: 2009/1

Liapis, C.D.; Avgerinos, E.D.

2009-01-01

248

Abdominal aortic aneurysm: Treatment options, image visualizations and follow-up procedures  

Directory of Open Access Journals (Sweden)

Full Text Available Abdominal aortic aneurysm is a common vascular disease that affects elderly population. Open surgical repair is regarded as the gold standard technique for treatment of abdominal aortic aneurysm, however, endovascular aneurysm repair has rapidly expanded since its first introduction in 1990s. As a less invasive technique, endovascular aneurysm repair has been confirmed to be an effective alternative to open surgical repair, especially in patients with co-morbid conditions. Computed tomography (CT angiography is currently the preferred imaging modality for both preoperative planning and post-operative follow-up. 2D CT images are complemented by a number of 3D reconstructions which enhance the diagnostic applications of CT angiography in both planning and follow-up of endovascular repair. CT has the disadvantage of high cummulative radiation dose, of particular concern in younger patients, since patients require regular imaging follow-ups after endovascular repair, thus, exposing patients to repeated radiation exposure for life. There is a trend to change from CT to ultrasound surveillance of endovascular aneurysm repair. Medical image visualizations demonstrate excellent morphological assessment of aneurysm and stent-grafts, but fail to provide hemodynamic changes caused by the complex stent-graft device that is implanted into the aorta. This article reviews the treatment options of abdominal aortic aneurysm, various image visualization tools, and follow-up procedures with use of different modalities including both imaging and computational fluid dynamics methods. Future directions to improve treatment outcomes in the follow-up of endovascular aneurysm repair are outlined.

Zhong-Hua Sun

2012-03-01

249

Abdominal surgery  

International Nuclear Information System (INIS)

A new art of ''interventional radiology'' has been developed in the past few years. Major applications include postoperative instrumentation of the biliary tract, percutaneous biliary drainage, tumor biopsy, abscess drainage, and intestinal-intubation procedures. Intervention by angiography encompasses injection of such substances as Pitressin (vasopressin), and embolization. These procedures have been of immense value. Fortunately, complications, such as sepsis and bleeding, have been infrequent. Computerized body tomography has also proved extremely important, particularly in the diagnosis of subphrenic abscess and pancreatic and pelvic pathology. /sup 99m/Tc-labeled-erythrocyte scans can be used to detect gastrointestinal bleeding sites. Scans can also identify hepatobiliary disease and splenic injury or differentiate the cause of jaundice. 111Indium-labeled autologous leukocytes may be useful in differentiating a pancreatic abscess from a pseudocyst. The advantage of indium scans over 67Ga scans is that a shorter time is required for maximum resolution: gallium requires 48 hours, indium 4. Another advantage is that indium is cleared through the liver and spleen and is not secreted into the bowel. 67Ga is absorbed by lymphomas and hepatocarcinomas. Nuclear magnetic resonance has many possible uses in abdominal surgery, but so far little information is available. This technique has been used to detect an empyema of the gallbladder thto detect an empyema of the gallbladder that was not diagnosed by ultrasound. Among hepatic lesions, it can easily differentiate tumors from cysts and in that regard is superior to both ultrasound and scan

250

Combined Endovascular/Surgical Management of a Ruptured Para-Anastomotic Aneurysm of the Left Common Iliac Artery#  

OpenAIRE

A 75-year old man presented with signs and symptoms of acute abdomen and a clinical picture of hypovolemic shock. An emergency CT scan revealed a ruptured para-anastomotic left common iliac artery aneurysm. The patient had undergone an elective abdominal aortic aneurysm repair operation and placement of an aortoiliac bifurcated graft 10 years before. Para-anastomotic aneurysms had developed in all 3 (aortic and the 2 iliac) anastomosis. As the patient was highrisk, a combined endovascular/sur...

Maras, Dimitrios; Papas, Theofanis T.; Gekas, Christos D.; Psathas, Chrisovalantis; Kotsikoris, Ioannis; Nikolaou, Achilleas; Pavlidis, Polyvios; Andrikopoulos, Vassilios

2009-01-01

251

Pseudoaneurysm after abdominal myomectomy: A rare but catastrophic complication  

Directory of Open Access Journals (Sweden)

Full Text Available Background: Uterine artery pseudoaneurysm is a rare diagnosis made postoperatively after pelvic surgery. The exact etiology is unknown however it is speculated to occur when an artery is lacerated and the perivascular tissue maintains persistent blood flow with the parent vessel. It can present with severe hemorrhage two to four weeks after an uncomplicated post operative course. Case: A 45 year old presented with vaginal hemorrhage and hypotension two weeks after abdominal myomectomy. Transvaginal ultrasound with doppler diagnosed pseudoaneurysm of the uterine artery. The patient was successfully treated with endovascular embolization utilizing micro coils. Conclusion: Transvaginal ultrasound is a useful technique in diagnosing pseudoaneurysms. Endovascular embolization is a minimally invasive, safe and effective way to treat this rare complication in institutions that have access to interventional radiology procedures.

May-Tal Sauerbrun-Cutler

2013-01-01

252

Rotura de aorta torácica descendente: Tratamiento endoprotésico Descending thoracic aortic rupture, endoprosthetic treatment  

Directory of Open Access Journals (Sweden)

Full Text Available La rotura de la aorta, independientemente de su localización y etiología, es una afección extremadamente grave que conduce a la muerte rápidamente. En el momento actual no hay consenso sobre si el tratamiento endovascular de la rotura de la aorta torácica descendente es superior al tratamiento quirúrgico convencional a medio y largo plazo. En esta serie, de 13 casos, describimos nuestra experiencia y evaluamos los resultados en pacientes tratados de forma endoprotésica desde enero de 2005 hasta enero de 2009.Aortic rupture, independently of its location and etiology, is an extremely serious condition that leads to death rapidly. There is currently no consensus on whether endovascular treatment of the descending thoracic aortic rupture is superior to conventional surgical repair in terms of mid-or long-terms outcome. We describe our experience with 13 patients from January 2005 to January 2009 to evaluate the results in patients with descending thoracic aortic rupture undergoing endoprosthetic management.

A. Fernández Carmona

2011-05-01

253

Cerebrovascular neurosurgery in evolution: the endovascular paradigm.  

Science.gov (United States)

Endovascular technique represents an important, minimally invasive approach to treating cerebrovascular disease. In this article, we discuss the origins of endovascular neurosurgery as a discipline in the context of important technical milestones, evidence-based medicine, and future cerebrovascular neurosurgical training. Cerebrovascular neurosurgery has seen a steady, convergent evolution toward the surgeon capable of seamless incorporation of open and endovascular approaches to any complex vascular disease affecting the central nervous system. Neurosurgery must assume the leadership role in the multidisciplinary neurovascular team. PMID:24402487

Sorkin, Grant C; Dumont, Travis M; Eller, Jorge L; Mokin, Maxim; Snyder, Kenneth V; Levy, Elad I; Siddiqui, Adnan H; Hopkins, L Nelson

2014-02-01

254

[The first case of one stage endovascular treatment of the stenosis in the celiac trunk, bilateral renal arteries, and right common iliac arteries].  

Science.gov (United States)

Although not very often diagnosed, the acute and chronic mesenterial ischemia is advancing and life threatening condition. When associated with multivascular pathology compromising the perfusion and causing multiple organ failure the choice of treatment is a challenge. In such cases the radical surgical treatment is associated with high morbidity and mortality. In recent years endovascular methods of treatment (angioplasty and stenting) are gaining popularity in the treatment of these patients. We report a case of chronic mesenteric ischemia that caused abdominal angina and weight loss in a 63-year-old man with renovasal hypertension, renal insufficiency and peripheral vascular disease. Angiographic study revealed multivascular pathology including total occlusion of the superior mesenteric artery, 90% stenosis of the celiac trunk, bilateral high grade renal stenoses and obstructive pathology of both iliac arteries. One stage successful endovascular treatment was performed in the three vascular territories. In the Celiac trunk, left renal artery and right common iliac artery were implanted stents. A double right renal artery was treated successfully with kissing balloon. A clinical follow-up demonstrated success with no recurrence of abdominal pain, body weight gain, better control of the hypertension and improvement of the renal function. This is the first reported case of one stage endovascular treatment of a visceral artery, bilateral renal arteries and iliac artery. This case report illustrates the value of endovascular treatment in a patient with atherosclerotic narrowing of multiple abdominal visceral arteries. PMID:15641560

Petrov, I; Grozdinski, L; Dzhorgova, Iu; Chervenkov, V; Iliev, N; Karamfilov, K; Zakhariev, T; Chirkov, A

2003-01-01

255

Endovascular management of gastric varices.  

Science.gov (United States)

Bleeding from gastric varices is a major complication of portal hypertension. Although less common than bleeding associated with esophageal varices, gastric variceal bleeding has a higher mortality. From an endovascular perspective,transjugular intrahepatic portosystemic shunts (TIPS) to decompress the portal circulation and/or balloon-occluded retrograde transvenous obliteration (BRTO) are utilized to address bleeding gastric varices. Until recently, there was a clear medical cultural divide between the strategy of decompressing the portal circulation (TIPS creation, for example) and transvenous obliteration for the management of gastric varices. However, the practice of BRTO is gaining acceptance in the United States and its practice is spreading rapidly. Recently, the American College of Radiology has identified BRTO to be a viable alternative to TIPS in particular anatomical and clinical scenarios. However, the anatomical and clinical applications of BRTO were not defined beyond the conservative approach of resorting to BRTO in non-TIPS candidates. The article discusses the outcomes of BRTO and TIPS for the management of gastric varices individually or in combination. Definitions, endovascular technical concepts and contemporary vascular classifications of gastric variceal systems are described in order to help grasp the complexity of the hemodynamic pathology and hopefully help define the pathology better for future reporting and lay the ground for more defined stratification of patients not only based on comorbidity and hepatic reserve but on anatomy and hemodynamic classifications. PMID:25438286

Saad, Wael E

2014-11-01

256

Videolaparoscopia en el trauma abdominal / Videolaparoscopy in abdominal trauma  

Scientific Electronic Library Online (English)

Full Text Available SciELO Cuba | Language: Spanish Abstract in spanish Introducción: la videolaparoscopia realizada de urgencia es uno de los avances tecnológicos más importantes para el diagnóstico precoz y el tratamiento oportuno de las afecciones abdominales agudas que incluyen las de causa traumática. Objetivo: caracterizar a pacientes con trauma abdominal sometido [...] s a videolaparoscopia de urgencia, según variables seleccionadas, e identificar algunos aspectos concernientes a la aplicación de esta técnica en nuestro medio. Métodos: se realizó un estudio observacional descriptivo de 18 pacientes ingresados por trauma abdominal en el servicio de Cirugía General del Hospital Universitario "Saturnino Lora", de Santiago de Cuba, durante los años 2006-2007, a los que se les realizó videolaparoscopia de urgencia. Resultados: predominaron los hombres jóvenes y los traumas abiertos. La ecografía y la punción abdominales fueron los métodos diagnósticos más utilizados. En los dos tercios de la serie la videolaparoscopia fue negativa o diagnosticó violación peritoneal simple. El hígado fue la víscera más frecuentemente lesionada. Para el acceso videolaparoscópico se necesitaron dos puertos en la mayoría de la serie. Dos pacientes requirieron laparotomía convencional, para un índice de conversión de 11,1 %, por lo que se evitaron 16 laparotomías innecesarias. El tiempo quirúrgico y la estadía hospitalaria posoperatoria fueron menores en la cirugía videolaparoscópica que en la laparotomía convencional. Conclusiones: la videolaparoscopia realizada con urgencia puede considerarse una herramienta de probada utilidad para el diagnóstico y tratamiento de los pacientes con traumatismos abdominales, porque evita un número considerable de laparotomías innecesarias y permite un aceptable margen de seguridad en la medida en que el cirujano perfeccione y domine esta tecnología. Abstract in english Introduction: the video-laparoscopy carried out with emergency is one of the more important technological advances for an early diagnosis and the timely treatment of acute abdominal affections including those of traumatic cause. Objective: to characterize patients with abdominal trauma submitted to [...] videolaparoscopia of urgency according to the selected variables and to identify some features related to the implementation of this technique in our context. Methods: a descriptive and observational study was conducted in 18 patients admitted due to abdominal trauma in the service of general surgery of the "Saturnino Lora" University Hospital of Santiago de Cuba province from 2006 to 2007, who underwent emergency video-laparoscopy. Results: there was predominance of young men and of open traumata. The echography and the abdominal puncture were the more used diagnostic methods. In the two third of the series, the video-laparoscopy was negative or diagnosed a simple peritoneal violation. The liver was the more frequent injured viscus. For the videolaparoscopy access are necessary two ports in most of series. Two patients required conventional laparotomy for a conversion rate of 11.1 % avoinding 16 unnecessary laparotomies. The surgical time and the postoperative hospital stay were less in the videolaparoscopy surgery than in the conventional laparotomy. Conclusions: the videolaparoscopy carried out with emergency may be considered a tool of usefulness demonstrated for diagnosis and treatment of patients presenting with abdominal traumata because of it avoids many unnecessary laparotomies and allows an acceptable degree of certainty insofar as the surgeon improve and dominate this technology.

Justo, Escalona Cartaya; Zenén, Rodríguez Fernández; Modesto, Matos Tamayo.

2012-03-01

257

Endovascular Treatment of Chronic Mesenteric Ischemia: Report of Five Cases  

International Nuclear Information System (INIS)

Purpose: To evaluate the midterm results of percutaneous transluminal angioplasty (PTA) and stent placement in stenotic and occluded mesenteric arteries in five consecutive patients with chronic mesenteric ischemia. Methods: Five patients with 70%-100% obliterations of all mesenteric vessels resulting in chronic mesenteric ischemia (n= 4) and as a prophylactic measure prior to abdominal aortic aneurysm repair (n= 1) underwent PTA of celiac and/or superior mesenteric artery (SMA) stenoses (n= 2), primary stenting of ostial celiac occlusions (n= 2), and secondary stenting of a SMA occlusion (n= 1; recoil after initial PTA). All patients underwent duplex ultrasonography (US) (n= 3) and/or angiography (n= 5) during a median follow-up of 21 months (range 8-42 months). Results: Clinical success was obtained in all five patients. Asymptomatic significant late restenoses (n3) were successfully treated with repeat PTA (n= 2) and stenting of an SMA occlusion (n= 1; celiac stent restenosis). Recurrent pain in one patient was interpreted as secondary to postsurgical abdominal adhesions. Two puncture-site complications occurred requiring local surgical treatment. Conclusions: Endovascular techniques may be attempted prior to surgery in cases of stenotic or short occlusive lesions in patients with chronic mesenteric ischemia. Surgery may still be preferred in patients with long occlusions and a low operative risk

258

Helical CT of abdominal aorta; Angioscanner helicoidal de l'aorte abdominale  

Energy Technology Data Exchange (ETDEWEB)

The purpose was to illustrate that single or multi-row spiral CT angiography has become the main modality for the examination of the abdominal aorta. Our multidisciplinary group investigates weekly 15 abdominal aortas, with a single slice spiral CT since 1995, and a 4 row detector spiral CT since 1999. CT scans protocols and parameters optimization for the 2 CT systems are described. Indications and results of CT to investigate the various abdominal aortic diseases are illustrated and discussed: aneurysms (pre-therapeutic staging, selection of indications of endovascular stent-grafting); obstructive aorto-arterio-pathies (pre-therapeutic staging, follow up after endovascular revascularization); dissection (diagnosis, pre-therapeutic staging, follow up); inflammatory diseases; normal patterns and principal complications after surgery. Situations where multislice CT is superior to single slice CT and compared advantages of MRI are discussed. CT is at the present time the main technique to image abdominal aorta. Multislice CT is especially interesting to explore the whole aorta, poly traumatisms, and to plan and follow up endovascular treatments. (author)

Bourlet, P.; Garnier, J.M.; Alfidja, A.; Lipiecka, E.; Chahid, T.; Privat, C.; Ravel, A.; Boyer, L. [Centre Hospitalier Universitaire Montpied, Service de Radiologie B Viscerale et Vasculaire, 63 - Clermont Ferrand (France)

2005-01-15

259

Renal Vascular Lesions: Diagnosis and Endovascular Management  

OpenAIRE

Renal vascular abnormalities included in this review are renal artery aneurysms (RAA) and renal arteriovenous malformations (AVM). The clinical presentation, diagnosis, and principles of management with emphasis on endovascular techniques are discussed.

Chimpiri, A. Rao; Natarajan, Balasubramani

2009-01-01

260

Linfangioma abdominal: Caso clínico Abdominal lymphangioma  

Directory of Open Access Journals (Sweden)

Full Text Available El linfangioma abdominal es una patología poco frecuente, benigna que corresponde a una malformación congénita del desarrollo linfático mesentérico y/o retroperitoneal. Es más frecuente en población infantil. Objetivo: Reportar un caso con presentación atípica de linfangioma. Caso clínico: Paciente de 2 años varón, previamente sano, que se presenta con dolor abdominal, luego lipotimia y palidez generalizada tras recibir un masaje abdominal. Al examen físico se encontró una masa abdominal, sin hepatomegalia, esplenomegalia ni adenopatías palpables. Presentaba un hematocrito de 17,3%. La Ecografía mostró una gran masa retrope-ritoneal con áreas anecogénicas y septos vascularizados. La TAC mostró hallazgos similares: masa quísti-ca, lobulada probablemente determinada por linfangioma abdominal. Se realizó extirpación quirúrgica y la biopsia confirma el diagnóstico. Discusión: El linfangioma abdominal es una patología infrecuente en niños. La presentación clínica es variable, puede ser desde asintomático hasta presentarse con abdomen agudo. Se requiere estudio imagenológico para su evaluación preoperatoria. La ecografía y TAC tienen un importante rol diagnóstico, en localización, tamaño, anatomía circundante y posibles complicaciones.Abdominal lymphangioma is a rare benign congenital malformation of the mesenteric and/or retroperitoneal lymphatics, more frequent in pediatrics. Objective: To report a case with unusual clinical presentation of lymphangioma. Clinical Case: A two-year old boy previously health who presented with abdominal pain, lipothymia, and generalized pallor ensuing an abdominal massage. Abnormal findings included an abdominal mass and Ht of 17.3%. Sonogram showed a large retroperitoneal mass with anechogenic areas and vasculari-zed septi. CT scans showed similar results. Surgical removal and biopsy confirmed the diagnosis. Discusion: Abdominal lymphangioma is uncommon in children, presentation varies from asymptomatic to acute abdomen. Images are essential in diagnosis and pre-op studies.

Ignacia Torrealba A

2012-02-01

261

Imaging and management of complications of open surgical repair of abdominal aortic aneurysms  

Energy Technology Data Exchange (ETDEWEB)

Open repair is still considered the reference standard for long-term repair of abdominal aortic aneurysms (AAA). In contrast to endovascular aneurysm repair (EVAR), patients with open surgical repair of AAA are not routinely followed up with imaging. Although complications following EVAR are widely recognized and routinely identified on follow-up imaging, complications also do occur following open surgical repair. With frequent use of multi-slice computed tomography (CT) angiography (CTA) in vascular patients, there is now improved recognition of the potential complications following open surgical repair. Many of these complications are increasingly being managed using endovascular techniques. The aim of this review is to illustrate a variety of potential complications that may occur following open surgical repair and to demonstrate their management using both surgical and endovascular techniques.

Nayeemuddin, M. [Department of Interventional Radiology, City General Hospital, University Hospital of North Staffordshire NHS Trust, Stoke-On-Trent (United Kingdom); Pherwani, A.D. [Department of Vascular Surgery, City General Hospital, University Hospital of North Staffordshire NHS Trust, Stoke-On-Trent (United Kingdom); Asquith, J.R., E-mail: john.asquith@uhns.nhs.uk [Department of Interventional Radiology, City General Hospital, University Hospital of North Staffordshire NHS Trust, Stoke-On-Trent (United Kingdom)

2012-08-15

262

Imaging and management of complications of open surgical repair of abdominal aortic aneurysms  

International Nuclear Information System (INIS)

Open repair is still considered the reference standard for long-term repair of abdominal aortic aneurysms (AAA). In contrast to endovascular aneurysm repair (EVAR), patients with open surgical repair of AAA are not routinely followed up with imaging. Although complications following EVAR are widely recognized and routinely identified on follow-up imaging, complications also do occur following open surgical repair. With frequent use of multi-slice computed tomography (CT) angiography (CTA) in vascular patients, there is now improved recognition of the potential complications following open surgical repair. Many of these complications are increasingly being managed using endovascular techniques. The aim of this review is to illustrate a variety of potential complications that may occur following open surgical repair and to demonstrate their management using both surgical and endovascular techniques.

263

Contemporary management of the demanding infra-renal neck in abdominal aortic aneurysm repair.  

Science.gov (United States)

Proximal infrarenal neck anatomy is a crucial factor in determining outcome of abdominal aortic aneurysm (AAA) repair. Unfavorable or demanding infrarenal neck anatomy significantly increases the complexity of both standard endovascular and open repair resulting in increased rates of morbidity and mortality. While technological improvements and expanding institutional experience have resulted in an increased proportion of patients with an AAA with unfavorable infrarenal neck treated by (fenestrated) endovascular techniques, open repair has also remained a valid technique. The purpose of this manuscript was to describe the wide array of endovascular and open techniques in use to treat patients with an AAA with a demanding infrarenal neck and discuss their results and indications. PMID:25592277

Mees, B M; Peppelenbosch, A G; De Haan, M W; Jacobs, M J; Schurink, G W

2015-04-01

264

Endovascular treatment options for atypical intracranial aneurysms  

OpenAIRE

Atypical intracranial aneurysms are due to various specific causes, such as spontaneous or traumatic arterial dissection, infectious arteritis, and neoplasia. The pathophysiology and presentation of these aneurysm types as well as giant serpentine aneurysms are presented because these aneurysms now can be treated by endovascular techniques. These techniques involve packing the aneurysm sac with embolic devices or occluding the aneurysm-bearing artery to induce thrombosis. Endovascular stents ...

Byrne, Jv

2000-01-01

265

Endovascular Management of Acute Limb Ischemia.  

LENUS (Irish Health Repository)

Despite major advances in pharmacologic and endovascular therapies, acute limb ischemia (ALI) continues to result in significant morbidity and mortality. The incidence of ALI may be as high as 13-17 cases per 100,000 people per year, with mortality rates approaching 18% in some series. This review will address the contemporary endovascular management of ALI encompassing pharmacologic and percutaneous interventional treatment strategies.

Hynes, Brian G

2011-09-14

266

Treatment Options for Late Type III Endoleaks after Endovascular Aneurysm Repair.  

Science.gov (United States)

Late type III endoleaks result from complete or partial separation of endograft device components. Component separation repressurizes the aortic sac and may result in aortic rupture. We report 4 cases of late type III endoleaks after initial successful endovascular aneurysm repair for abdominal aortic aneurysm. Our cases include 3 aortic cuff separations and 1 iliac limb separation. The average time before graft separation was 3.25 years with an average aneurysm size at re-presentation of 8.2 cm. Management of these complex cases will be discussed, the literature reviewed, and recommendations for treatment offered. PMID:25597652

Eng, Maia L; Brewer, Michael B; Rowe, Vincent L; Weaver, Fred A

2015-04-01

267

Endovascular stent graft for treatment of complicated spontaneous dissection of celiac artery: Report of two cases  

Energy Technology Data Exchange (ETDEWEB)

We report 2 cases of complicated spontaneous dissection of the celiac artery, which were successfully treated by a stent graft. The first patient was a 47-year-old man who presented with acute abdominal pain. CT scan showed ruptured saccular aneurysm with surrounding retroperitoneal hematoma. The second patient was a 57-year-old man with progressive dissecting aneurysm. Endovascular stent graft was placed in the celiac trunk to control bleeding, and to prevent rupture in each patient. Follow-up CT scans showed complete obliteration of a dissecting aneurysm.

Kang, Ung Rae; Lee, Young Hwan [Dept. of Diagnostic Radiology, Catholic University of Daegu School of Medicine, Daegu (Korea, Republic of); Kim, Young Hwan [Dept. of Diagnostic Radiology, Dongsan Medical Center, Keimyung University School of Medicine, Daegu (Korea, Republic of)

2013-06-15

268

Endovascular stent graft for treatment of complicated spontaneous dissection of celiac artery: Report of two cases  

International Nuclear Information System (INIS)

We report 2 cases of complicated spontaneous dissection of the celiac artery, which were successfully treated by a stent graft. The first patient was a 47-year-old man who presented with acute abdominal pain. CT scan showed ruptured saccular aneurysm with surrounding retroperitoneal hematoma. The second patient was a 57-year-old man with progressive dissecting aneurysm. Endovascular stent graft was placed in the celiac trunk to control bleeding, and to prevent rupture in each patient. Follow-up CT scans showed complete obliteration of a dissecting aneurysm.

269

Clostridium septicum post-endovascular aneurysm repair stent-graft infection.  

Science.gov (United States)

Endovascular aortic aneurysm repair (EVAR) is establishing its role as a valid alternative for the treatment of abdominal aortic aneurysm. Post-EVAR graft infection is a rare and devastating complication. The incidence of post-EVAR graft infection is yet to be defined, and available data at this stage consist of case reports and small series. Possible etiologies for aortic stent-graft infection include perioperative contamination and hematogenous seeding. To the best of our knowledge, this is the first report of post-EVAR stent graft infection with Clostridium septicum. The possible mechanisms of this unusual hematogenous seeding have been discussed. PMID:21715552

Halak, Moshe; Heldenberg, Eitan; Silverberg, Daniel; Schneiderman, Jacob

2012-04-01

270

Vestibulopatia por lesão endovascular em cateterismo de urgência / Vestibular system paresis due to emergency endovascular catheterization  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Languages: English, Portuguese Abstract in portuguese OBJETIVO: O objetivo deste relato de caso é descrever uma causa incomum de vestibulopatia periférica associada à perda auditiva unilateral em paciente idoso pós- cateterismo de urgência. RELATO DE CASO: Paciente do gênero masculino, 82 anos, submetido à correção de aneurisma roto de aorta abdominal, [...] no intra-operatório sofreu infarto agudo do miocárdio necessitando de angioplastia primária. Após alta hospitalar refere queixa de hipoacusia acentuada à direita e vertigem incapacitante, sem sinais neurológicos focais. Ao exame clínico otorrinolaringológico apresentava: Teste de Weber lateralizado para a esquerda, nistagmo espontâneo para a esquerda , marcha oscilante, leve disbasia e ataxia, índexnariz e diadococinesia normais, Teste de Romberg com oscilação sem queda e Fukuda com desvio lateral para a direita. O exame audiométrico evidenciava anacusia à direita e perda neurossensorial à esquerda em agudos, arreflexia vestibular à direita na prova calórica e, na tomografia computadorizada dos ossos temporais e tronco-encefálico, presença de haste metálica atravessando o osso temporal direito, a partir da veia jugular interna e bulbo jugular, atravessando os canais semicirculares posterior, superior e vestíbulo, projetando-se em lobo temporal. O diagnóstico radiológico foi lesão traumática por guia endovascular metálico durante cateterismo de urgência e a conduta, considerando que o paciente não havia compensado o equilíbrio, foi reabilitação vestibular. CONCLUSÃO: Queixas de tontura no paciente idoso devem ser criteriosamente avaliadas diante do seu histórico clínico patológico pois os antecedentes de doenças e tratamentos prévios, em geral, direcionam as hipóteses diagnósticas porém podem trazer alterações inesperadas. Abstract in english OBJECTIVE: The objective of this story of case is to describe an uncommon cause of associated peripheral Vestibulopathy to the unilateral auditory loss in aged patient after catheterization of urgency. STORY OF CASE: Patient of the masculine sort, 82 years, submitted to the correction of abdominal r [...] agged aneurism of aorta, in the intra-operative suffered heart attack acute from the myocardium needing primary angioplasty. High after hospital it relates to complaint of accented hearing loss to the right and crippling vertigo, without focal neurological signals. To the otorhinolaryngological clinical examination it presented: Test of Weber lateralized for the left, spontaneous nystagmus for the left, marches rocking, has taken normal disbasia and ataxia, index-nose and diadochokinesia, Test of Romberg with oscillation without fall and Fukuda with lateral shunting line for the right. The audiometric examination evidenced deafness to the right and sensorineural loss to the left in sharps, areflexia initial to the right in caloric test e, the computerized tomography of the secular bones and brainstem, presence of metallic connecting rod crossing the right secular bone, from the vein internal jugular vein and bulb jugular vein, crossing the posterior, superior and vestibule semicircular canals, projecting itself in temporal lobe. The radiological diagnoses was traumatic injury for guide to endovascular metallic during catheterization of urgency and the behavior, considering that the patient had not compensated the balance, it was vestibular rehabilitation. CONCLUSION: Complaints of giddiness in the aged patient must be closely evaluated of its pathological clinical description because the antecedents of illnesses and previous treatments, in general, direct the diagnostic hypotheses however they can bring unexpected alterations.

Lucinda, Simoceli; Danilo Anunciatto, Sguillar; Henrique Mendes Paiva, Santos; Camilla, Caputti.

2012-06-01

271

Total abdominal colectomy  

Science.gov (United States)

Total abdominal colectomy is the removal of the large intestine from the lowest part of the small ... Total abdominal colectomy is usually safe. Your risk depends on your general overall health. Ask your doctor ...

272

[Endovascular therapy for intracranial aneurysms].  

Science.gov (United States)

During the past 5 to 10 years, therapy for aneurysms has seen dramatic changes. In some centers they happened before the ISAT study, in others afterward. Endovascular treatment is now the method of choice for intracranial aneurysms whenever possible. Large centers are using it for 70-80% of aneurysms. Due to constant development of new interventional materials, even wide-necked aneurysms in practically all localizations can be treated today with very dependable results. The remaining aneurysms are quite difficult to treat and represent a great neurosurgical challenge. Despite all the technical improvements, closure is still not the most difficult element of the therapeutic procedure. This role is played by the subarachnoidal hemorrhage, which still is decisive for patient outcome. All related disciplines are urgently called upon to solve the unresolved problems as quickly and efficiently as possible through determined research. PMID:16897047

Forsting, M; Wanke, I

2006-09-01

273

Linfangioma abdominal: Caso clínico / Abdominal lymphangioma  

Scientific Electronic Library Online (English)

Full Text Available El linfangioma abdominal es una patología poco frecuente, benigna que corresponde a una malformación congénita del desarrollo linfático mesentérico y/o retroperitoneal. Es más frecuente en población infantil. Objetivo: Reportar un caso con presentación atípica de linfangioma. Caso clínico: Paciente [...] de 2 años varón, previamente sano, que se presenta con dolor abdominal, luego lipotimia y palidez generalizada tras recibir un masaje abdominal. Al examen físico se encontró una masa abdominal, sin hepatomegalia, esplenomegalia ni adenopatías palpables. Presentaba un hematocrito de 17,3%. La Ecografía mostró una gran masa retrope-ritoneal con áreas anecogénicas y septos vascularizados. La TAC mostró hallazgos similares: masa quísti-ca, lobulada probablemente determinada por linfangioma abdominal. Se realizó extirpación quirúrgica y la biopsia confirma el diagnóstico. Discusión: El linfangioma abdominal es una patología infrecuente en niños. La presentación clínica es variable, puede ser desde asintomático hasta presentarse con abdomen agudo. Se requiere estudio imagenológico para su evaluación preoperatoria. La ecografía y TAC tienen un importante rol diagnóstico, en localización, tamaño, anatomía circundante y posibles complicaciones. Abstract in english Abdominal lymphangioma is a rare benign congenital malformation of the mesenteric and/or retroperitoneal lymphatics, more frequent in pediatrics. Objective: To report a case with unusual clinical presentation of lymphangioma. Clinical Case: A two-year old boy previously health who presented with abd [...] ominal pain, lipothymia, and generalized pallor ensuing an abdominal massage. Abnormal findings included an abdominal mass and Ht of 17.3%. Sonogram showed a large retroperitoneal mass with anechogenic areas and vasculari-zed septi. CT scans showed similar results. Surgical removal and biopsy confirmed the diagnosis. Discusion: Abdominal lymphangioma is uncommon in children, presentation varies from asymptomatic to acute abdomen. Images are essential in diagnosis and pre-op studies.

Ignacia, Torrealba A; Florencia, De Barbieri M.

2012-02-01

274

Toxicity of abdominal fat  

OpenAIRE

Abdominal fat or truncal obesity consists of both subcutaneous and visceral fat. It has been found that visceral fat is more metabolically active than subcutaneous fat. The low-level inflammation linked with abdominal fat is associated with insulin resistance and with increases in the release of inflammatory adipokines and cytokines. As a result of these changes, abdominal fat can cause a variety of health conditions. In this review, we focus on the adverse effects of abdominal fat on the bo...

Shawn Mathew; Kosmas, Constantine E.; Siegel, Robert R.; Vittorio, Timothy J.

2013-01-01

275

Tratamento endovascular de aneurismas cirsoideos do couro cabeludo Endovascular treatment of scalp cirsoid aneurysms  

Directory of Open Access Journals (Sweden)

Full Text Available OBJETIVO: Relatar os resultados da aplicação de técnicas endovasculares no tratamento de aneurismas cirsoideos do couro cabeludo. MATERIAIS E MÉTODOS: Quatro pacientes com diagnóstico de aneurismas cirsoideos foram submetidos ao tratamento por via endovascular. Todos os quatro pacientes incluídos nesta série tinham malformações arteriovenosas e foram tratados apenas com embolização. RESULTADOS: Três pacientes foram submetidos a tratamento endovascular mediante embolização transarterial e um foi tratado por punção direta da porção venosa. Os resultados clínicos e cosméticos foram satisfatórios em todos os pacientes. Não houve recidiva clínica durante o período de acompanhamento. CONCLUSÃO: A via endovascular é uma alternativa segura e eficaz no tratamento dos aneurismas cirsoideos. Embora possa ser efetivamente utilizado como uma alternativa adjuvante ou complementar à cirurgia, especialmente quando é necessário lidar com aferências profundas, a maioria dos casos pode ser totalmente curada apenas com a terapêutica endovascular. A escolha do método de tratamento deve ser baseada em uma variedade de características próprias da lesão, incluindo sua angioarquitetura, tamanho e apresentação clínica.OBJECTIVE: To report results of the application of endovascular techniques in the management of scalp cirsoid aneurysms. MATERIALS AND METHODS: Four patients diagnosed with cirsoid aneurysms were submitted to treatment by endovascular approach. All the four patients included in the present series had arteriovenous malformations and were treated solely by embolization. RESULTS: Three of the patients underwent endovascular treatment by transarterial embolization and one was treated by direct puncture of the venous segment. Both clinical and cosmetic outcomes were satisfactory in all of the patients. Clinical relapse was not observed along the follow-up period. CONCLUSION: The endovascular approach is safe and effective in the management of crisoid aneurysms. Although this technique can be used as an adjuvant or complement to surgery, particularly in cases where deep afferents are involved, complete resolution can be achieved only with endovascular treatment. The choice of treatment method should be based on a range of typical characteristics of the lesion, including angioarchitecture, size and clinical presentation.

Eduardo Wajnberg

2010-08-01

276

Endovascular repair of early rupture of Dacron aortic graft--two case reports.  

LENUS (Irish Health Repository)

Complications after open aortic surgery pose a challenge both to the vascular surgeon and the patient because of aging population, widespread use of cardiac revascularization, and improved survival after aortic surgery. The perioperative mortality rate for redo elective aortic surgery ranges from 5% to 29% and increases to 70-100% in emergency situation. Endovascular treatment of the postaortic open surgery (PAOS) patient has fewer complications and a lower mortality rate in comparison with redo open surgical repair. Two cases of ruptured abdominal aortic aneurysm (AAA) were managed with the conventional open surgical repair. Subsequently, spiral contrast computer tomography scans showed reperfusion of the AAA sac remnant mimicking a type III endoleak. These graft-related complications presented as vascular emergencies, and in both cases endovascular aneurysm repair (EVAR) procedure was performed successfully by aortouniiliac (AUI) stent graft and femorofemoral crossover bypass. These 2 patients add further merit to the cases reported in the English literature. This highlights the crucial importance of endovascular grafts in the management of such complex vascular problems.

Sultan, Sherif

2005-01-01

277

Failure of aneurysm sac shrinkage after endovascular repair; the effect of mural calcification  

Energy Technology Data Exchange (ETDEWEB)

AIM: To evaluate the effect of abdominal aortic aneurysm wall calcification on subsequent sac shrinkage after endovascular repair. MATERIALS AND METHODS: Seventy-three patients underwent endovascular aneurysm repair. The degree of sac wall calcification on pre-procedural computed tomography (CT) examination was graded from 1 to 4 according to the degree of circumferential involvement. On follow-up CT imaging, the maximum transverse diameter (MTD) of the sac was recorded, as well as the presence or absence of endoleak. In those patients with a non-shrinking aneurysm, but no CT evidence of endoleak, contrast-enhanced ultrasound (USS) was performed. Any patient with an endoleak, however diagnosed, was excluded from the study. Kruskal-Wallis and Spearman's rank correlation coefficient testing was applied to compare the degree of calcification and change in MTD. RESULTS: Sixty-three pre-procedural CT images were available for calcification grading. Six of this group had endoleaks resulting in 57 sets of data being available for the study. A reduction in MTD occurred in 68.25% of these patients by 1 year post-procedure. Our figures show aortic calcification is inversely associated with MTD reduction at 6 months (p=0.01), 1 year (p=0.05) and 2 years (p=0.05). CONCLUSION: This study indicates that the degree of aortic wall calcification is significant in predicting MTD reduction post-endovascular repair. The possible mechanisms and implications of this are discussed.

Love, M. [Department of Radiology, Royal Victoria Hospital, Belfast (United Kingdom)]. E-mail: mark.love@royalhospitals.n-i.nhs.uk; Wray, A. [Department of Radiology, Royal Victoria Hospital, Belfast (United Kingdom); Worthington, M. [Department of Radiology, Royal Victoria Hospital, Belfast (United Kingdom); Ellis, P. [Department of Radiology, Royal Victoria Hospital, Belfast (United Kingdom)

2005-12-15

278

Failure of aneurysm sac shrinkage after endovascular repair; the effect of mural calcification  

International Nuclear Information System (INIS)

AIM: To evaluate the effect of abdominal aortic aneurysm wall calcification on subsequent sac shrinkage after endovascular repair. MATERIALS AND METHODS: Seventy-three patients underwent endovascular aneurysm repair. The degree of sac wall calcification on pre-procedural computed tomography (CT) examination was graded from 1 to 4 according to the degree of circumferential involvement. On follow-up CT imaging, the maximum transverse diameter (MTD) of the sac was recorded, as well as the presence or absence of endoleak. In those patients with a non-shrinking aneurysm, but no CT evidence of endoleak, contrast-enhanced ultrasound (USS) was performed. Any patient with an endoleak, however diagnosed, was excluded from the study. Kruskal-Wallis and Spearman's rank correlation coefficient testing was applied to compare the degree of calcification and change in MTD. RESULTS: Sixty-three pre-procedural CT images were available for calcification grading. Six of this group had endoleaks resulting in 57 sets of data being available for the study. A reduction in MTD occurred in 68.25% of these patients by 1 year post-procedure. Our figures show aortic calcification is inversely associated with MTD reduction at 6 months (p=0.01), 1 year (p=0.05) and 2 years (p=0.05). CONCLUSION: This study indicates that the degree of aortic wall calcification is significant in predicting MTD reduction post-endovascular repair. The possible mechanisms and implications of this are discussedplications of this are discussed

279

The role of gadolinium-enhanced MR imaging in the preoperative evaluation of inflammatory abdominal aortic aneurysm  

Energy Technology Data Exchange (ETDEWEB)

Inflammatory abdominal aortic aneurysm is an uncommon variant of abdominal aortic aneurysms. Thorough preoperative imaging of the extent of the aneurysm and inflammation and the associated complications are crucial in the management of this condition. We report a case of inflammatory abdominal aortic aneurysm where, after the initial contrast-enhanced CT, gadolinium-enhanced MR imaging was used to define the true extent of the inflammation and differentiate inflammation from mural thrombus at the iliac extension of the aneurysm. The imaging appearances are presented and the impact of MR imaging on further surgical management options including endovascular repair are discussed. (orig.)

Anbarasu, A.; McWilliams, R.G. [Department of Radiology, Royal Liverpool University Hospital, Prescot Street, Liverpool, L7 8XP (United Kingdom); Harris, P.L. [Department of Vascular Surgery, Royal Liverpool University Hospital, Prescot Street, Liverpool, L7 8XP (United Kingdom)

2002-07-01

280

Hybrid treatment of bullet embolism at the abdominal aortic bifurcation, complicated with thoracoabdominal aorta pseudoaneurysm and common iliac artery occlusion: case report / Tratamento híbrido de embolia por projétil de arma de fogo em bifurcação aórtica abdominal complicada com pseudoaneurisma de aorta tóraco-abdominal e oclusão de artéria ilíaca comum: relato de caso  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Languages: English, Portuguese Abstract in portuguese A embolização por projétil de arma de fogo na circulação sanguínea é rara e de difícil suspeição no atendimento inicial ao trauma. Relatamos e discutimos um caso de embolia em bifurcação aórtica abdominal complicada com pesudoaneurisma de aorta tóraco-abdominal e oclusão de artéria ilíaca comum dire [...] ita, tratada de forma efetiva pelos métodos endovascular e cirúrgico convencional. Abstract in english Embolization due to a firearm projectile entering the bloodstream is a rare event that is unlikely to be suspected during initial treatment of trauma patients. We describe and discuss a case of bullet embolism of the abdominal aortic bifurcation, complicated by a pseudoaneurysm of the thoracoabdomin [...] al aorta and occlusion of the right common iliac artery, but successfully treated using a combination of endovascular methods and conventional surgery.

Patrick Bastos, Metzger; Rafael Borges, Monteiro; Maria Luiza Leite de, Medeiros; Willian Guidini, Lima; Vinicius, Bertoldi; Fabio Henrique, Rossi; Nilo Mitssuru, Izukawa; Antônio Massamitsu, Kambara.

2014-03-01

281

Preservação das artérias hipogástricas com endoprótese ramificada no tratamento endovascular de aneurismas aorto-ilíacos / The Zenith iliac bifurcation Device (IBD) for preservation of the internal iliac arteries during endovascular repair of aortic-iliac aneurysms  

Scientific Electronic Library Online (English)

Full Text Available SciELO Portugal | Language: Portuguese Abstract in portuguese Introdução: Os doentes com indicação para tratamento endovascular de aneurismas da aorta abdominal (EVAR) apresentam frequentemente artérias ilíacas comuns ectasiadas ou aneurismáticas, o que impossibilita a sua utilização como zona de encoragem distal da endoprótese. Em cerca de 15 a 30% dos casos [...] pode existir necessidade de oclusão/embolização de uma ou de ambas as hipogástricas, com extensão da endoprótese para a artéria ilíaca externa. Isto tem sido associado a casos de claudicação glútea, isquémia intestinal, deficits neurológicos, e de disfunção vesical, intestinal e eréctil. O uso de endopróteses com ramo para a artéria hipogástrica apresenta-se como uma recente inovação que permite a preservação desta artéria e evitar estas complicações. Caso clínico: Homem de 63 anos, com antecedentes de cirurgia aórtica com interposição protésica aorto-aórtica em 2008 por aneurisma da aorta abdominal (AAA) infra-renal, admitido para tratamento endovascular de aneurisma das artérias ilíaca comum e hipogástrica direitas, com 3,3 cm de maior diâmetro. O doente foi submetido a colocação por via femoral de endoprótese Zenith® ramificada para bifurcação ilíaca com preservação da artéria hipogástrica. Conclusões: A utilização de endopróteses ramificadas para a bifurcação ilíaca durante a correcção endovascular de aneurismas aorto-ilíacos para ser uma forma segura e pouco complexa de garantir a preservação das artérias hipogástricas e minimizar as complicações associadas à sua oclusão. Abstract in english Introduction: A significant portion of patients presenting for endovascular aneurysm repair of the abdominal aorta (EVAR) have aneurysmatic or ectasied common iliac arteries, raising distal anchorage issues. In these cases, it may be necessary occlusion / embolization of one or both hipo gastric art [...] eries with extension of the endoprothesis to the external iliac artery. This procedure has been associated to gluteal claudication, intestinal ischemia, vesical and intestinal disfunction, neurologic deficits and impotence. The use of branched endoprothesis with preservation of the hypgastric artery is a recente innovation to reduce such complications. Clinical case: A 63 year-old male, previously submitted to an open repair of an abdominal aortic aneurysm with an aorto-aortic prothesis, was admitted for endovascular treatment of an aneurysm of the right common and internal iliac arteries with 3,3cm. A Zenith® branched endoprothesis with a branch to the iliac bifurcation was deployed via right femoral access, thus assuring preservation of the hypogastric artery. Conclusion: Hypogastric preservation necessity during EVAR in aorto-iliac aneurysms may be achieved in a secure and simple way through the placement of endoprothesis to the iliac bifurcation.

Emanuel, Dias; Gonçalo, Alves; Leonor, Vasconcelos; Aragão de, Morais; João Albuquerque, Castro; Luís Mota, Capitão.

2010-12-01

282

[Endovascular therapy options for aneurysmal subarachnoid hemorrhage].  

Science.gov (United States)

Aneurysmal subarachnoid hemorrhaging (ASH) is a severe condition with an acute symptomatic, often with a difficult course and accompanied by many complications. Aneurysms can be detected using computed tomography (CT), magnetic resonance angiography (MRA) and digital subtraction angiography (DSA). Possible therapy options for ASH are surgical clipping and endovascular treatment using platinum coils. The surgical approach is an effective and safe method for avoiding recurrent bleeding.So-called Guglielmi detachable coils, with which aneurysms can be successfully embolized, have been available since 1991. Initially only a few different sizes of platinum coils were available but now complex forms of platinum coils with different lengths and rigidness are available so that many forms of aneurysm can be treated. Broad-based aneurysms, which could previously only be treated by surgery, can now be treated by the so-called balloon remodeling technique or stent-assisted coiling, whereby a balloon or stent is placed in the parent vessel to act as a scaffold for the coil. The results of the ISAT study demonstrated that a better outcome for patients could be achieved by endovascular treatment of aneurysms than by neurosurgical clipping of ruptured aneurysms. For this reason the first option should be endovascular treatment when possible. Asymptomatic aneurysms are being observed increasingly more often and primary treatment should be endovascular when possible. The somewhat higher re-bleeding rate for endovascular treatment could not diminish the better results of the ISAT study even during the 5-year follow-up. PMID:21328052

Reith, W

2011-02-01

283

Common and uncommon CT findings in rupture and impending rupture of abdominal aortic aneurysms  

International Nuclear Information System (INIS)

The rapid imaging evaluation and diagnosis of rupture and impending rupture of an abdominal aortic aneurysm (AAA) is imperative. This article describes the imaging findings of rupture, impending rupture, and other abdominal aortic abnormalities. It is important not to overlook AAA as the consequences can be life threatening. All patients who had open or endovascular repair of AAA rupture over 6 years (2008–2012) were identified from our departmental database. The computed tomography (CT) images of 99 patients were reviewed for relevant findings. The mean age of the patients was 65 years and 85% were male

284

Unconventional Applications of Endovascular Devices in Acquired Structural Cardiomyopathies / Aplicaciones no convencionales de dispositivos endovasculares en cardiopatías estructurales adquiridas  

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: Spanish Abstract in spanish En los últimos años se han diseñado e introducido en la práctica clínica habitual diversos dispositivos para el tratamiento de cardiopatías estructurales congenitas y adquiridas. Pero más allá de sus indicaciones formales, la utilización off-label de estos dispositivos en situaciones en las que el t [...] ratamiento quirúrgico convencional tiene un riesgo elevado se ha comunicado cada vez con más frecuencia con resultados alentadores. En esta comunicación se presentan cuatro casos de pacientes con patologías de baja preva-lencia que fueron tratados por vía endovascular con dispositivos Amplatzer® por fuera de las indicaciones para las que fueron diseñados. Una fuga paravalvular aórtica, un defecto de Gerbode adquirido, una fístula de la aorta hacia la aurícula derecha y una fuga paraprotesica mitral se cerraron con dispositivos para oclusión vascular, para el cierre de comunicación interauricular, para el cierre de conducto arterioso y para el tratamiento de comunicaciones interventriculares musculares, respectivamente. En todos los casos los tratamientos fueron efectivos y los pacientes evolucionaron favorablemente sin requerir nuevas intervenciones. Se concluye que la utilización de dispositivos Amplatzer® en patologías seleccionadas más allá de las indicaciones para las que fueron diseñados es una alternativa terapeutica válida en manos de equipos experimentados en este tipo de tratamiento. Abstract in english In recent years, several devices for the treatment of congenital or acquired structural cardiomyopathies have been designed and introduced in clinical practice. But beyond their formal indications, in situations where conventional surgical treatment has a high risk, off-label use of these devices ha [...] s been reported with increasing frequency and encouraging results. This work presents four cases of patients with low prevalence disorders who were treated with percutaneous Amplatzer® devices for indications other than those for which they were designed. An aortic paravalvular leak, an acquired Gerbode defect, an aorta to right atrium fistula and a mitral paraprosthetic leak were respectively closed with devices for vascular occlusion, atrial septal defect closure, ductus arteriosus closure and treatment of muscular interventricular communication. In all cases the treatments were effective and patients had a favourable outcome without requiring new surgical interventions. We conclude that, irrespective of the indications for which they were designed, the use of Amplatzer® devices in selected pathologies is a good therapeutic alternative in the hands of experienced teams in this type of treatment.

José A. G, Álvarez; José L, Alonso; Gustavo A, Leiva; Pablo, Baglioni; María L, Fernández Recalde; Carlos, Rivas; Osvaldo D, Manuale; Guillermo, Migliaro; Alejandra Morales, Lezica; Alberto, Sciegata.

2013-04-01

285

Radiation exposure to anaesthetists during endovascular procedures.  

Science.gov (United States)

Medical radiation exposure increases the likelihood of cataract formation. A personal dosimeter was attached to the left temple of 77 anaesthetists during 45 endovascular aortic aneurysm repairs and 32 interventional neuroradiology procedures. Compared with interventional neuroradiology, the median (IQR [range]) total radiation dose emitted by fluoroscopic equipment was significantly lower during endovascular aortic aneurysm repair (4175 (3127-5091 [644-9761]) mGy than interventional neuroradiology (1420 (613-2424 [165-10,840]) mGy, p radiation exposure to the anaesthetist's temple was significantly greater during endovascular aortic aneurysm repair (15 (6-41 [1-109]) ?Sv) than interventional neuroradiology (4 (2-8 [0-67]) ?Sv, p radiation exposure, and reduce this by limiting the time of exposure, increasing the distance from the source of radiation, and shielding. PMID:25267714

Arii, T; Uchino, S; Kubo, Y; Kiyama, S; Uezono, S

2015-01-01

286

Lower respiratory tract infection and rapid expansion of an abdominal aortic aneurysm: a case report  

Directory of Open Access Journals (Sweden)

Full Text Available Abstract Introduction The rate of abdominal aortic aneurysm expansion is related to multiple factors. There is some evidence that inflammation can accelerate aneurysm expansion. However, the association between pulmonary sepsis and rapid abdominal aortic aneurysm expansion is rarely reported. Case presentation Here we present a case of a rapidly expanding abdominal aortic aneurysm in a 68-year-old Caucasian man with a concomitant lower respiratory tract infection and systemic sepsis requiring intensive monitoring and urgent endovascular intervention. Our patient had an uncomplicated post-operative recovery and a follow-up computed tomography scan at one month demonstrated no evidence of an endoleak. Conclusion This case highlights the potential association between pulmonary sepsis and rapid abdominal aortic aneurysm expansion. In such cases, a policy of frequent monitoring should be adopted to identify those patients requiring definitive management.

Puppala Sapna

2010-10-01

287

Emergency Endovascular Treatment of Sac Rupture for Type IIIa Endoleak in Thoracic Aortic Aneurysm Previously Excluded with Endovascular Repair  

International Nuclear Information System (INIS)

Elective endovascular treatment of thoracic aortic pathology has been applied in a variety of conditions. The complications of thoracic aortic stenting are also well recognized. Endoleak after endovascular repair of thoracic aortic aneurysms is the most frequent complication; among them, type III is the least frequent. Endovascular treatment of type III endoleak is generally performed under elective conditions; less frequently, in emergency. We report a successful emergency endovascular management of post-thoracic endovascular repair for thoracic aortic aneurysm rupture due to type IIIa endoleak.

288

Abdominal MRI in childhood  

International Nuclear Information System (INIS)

MRI provides diagnostic information in multiple abdominal diseases in childhood. Additional information to sonographic findings can be achieved in the diagnosis of abdominal malformation as well as in several inflammatory processes. In childhood cancer imaging MRI is essential at the beginning as well as during therapy to assess response to therapy. Because of radiation protection MRI has to replace CT in abdominal imaging in children. Some technical details have to be considered when children are examined. (orig.)

289

Endovascular advances for extracranial carotid stenosis.  

Science.gov (United States)

Carotid artery stenting has become a viable alternative to carotid endarterectomy in the management of carotid stenosis. Over the past 20 years, many trials have attempted to compare both treatment modalities and establish the indications for each one, depending on clinical and anatomic features presented by patients. Concurrently, carotid stenting techniques and devices have evolved and made endovascular management of carotid stenosis safe and effective. Among the most important innovations are devices for distal and proximal embolic protection and new stent designs. This paper reviews these advances in the endovascular management of carotid artery stenosis within the context of the historical background. PMID:24402498

Eller, Jorge L; Dumont, Travis M; Sorkin, Grant C; Mokin, Maxim; Levy, Elad I; Snyder, Kenneth V; Nelson Hopkins, L; Siddiqui, Adnan H

2014-02-01

290

Abdominal Aortic Aneurysms: Treatments  

Science.gov (United States)

... renal disease Infertility Liver disease Needle biopsy Osteoporosis Pediatrics Pelvic pain ... Aortic Aneurysms Interventional Radiologists Treat Abdominal Aneurysms Nonsurgically Interventional radiologists ...

291

Abdominal exploration - series (image)  

Science.gov (United States)

... the pancreas (acute or chronic pancreatitis) pockets of infection (retroperitoneal abscess, abdominal abscess, pelvic abscess)) presence of uterine tissue (endometrium) in the abdomen (endometriosis) inflammation of ...

292

Stent-Grafts for Unruptured Abdominal Aortic Aneurysms: Current Status  

International Nuclear Information System (INIS)

Aortic stent-grafts were introduced at the beginning of the 1990s as a less invasive method of dealing with aortic aneurysms in patients with poor cardiovascular reserve. The numbers of procedures performed worldwide has increased exponentially despite the current lack of any substantial evidence for long-term efficacy in comparison with the gold standard of open surgical grafting. This review summarizes the evolution of the abdominal aortic stent-graft, the techniques used for assessment and deployment, and the effect of the procedure on both the patient and the device. The recent publication of two national multicenter trials has confirmed that the endovascular technique confers a 2.5-fold reduction in 30-day mortality in comparison with open surgery. However, over 4 years of follow-up, there is a 3-fold increase in the risk of reintervention and the overall costs are 30% greater with endovascular repair. Although the improvement in aneurysm-related mortality persists in the mid-term, because of the initial reduction in perioperative mortality, the all-cause mortality rate at 4 years is actually no better than for open surgery. Longer-term data from the randomized trials are awaited as well as results from the latest trials utilizing state-of-the-art devices. Whilst the overall management of abdominal aortic aneurysms has undoubtedly benefited from the introduction of stent-grafts, open repair currently remains the gold standard treatmentdard treatment

293

Endovascular Embolization of Spontaneous Retroperitoneal Hemorrhage Secondary to Anticoagulant Treatment  

International Nuclear Information System (INIS)

The purpose of this study was to report a single hospital's experience of endovascular treatment of patients with retroperitoneal hemorrhage (RPH) secondary to anticoagulant treatment. Ten consecutive patients treated in an intensive care unit and needing blood transfusions due to RPH secondary to anticoagulation were referred for digital subtraction angiography (DSA) to detect the bleeding site(s) and to evaluate the possibilities of treating them by transcatheter embolization. DSA revealed bleeding site(s) in all 10 patients: 1 lumbar artery in 4 patients, 1 branch of internal iliac artery in 3 patients and multiple bleeding sites in 3 patients. Embolization could be performed in 9 of them. Coils, gelatin and/or polyvinyl alcohol were used as embolic agents. Bleeding stopped or markedly decreased after embolization in 8 of the 9 (89%) patients. Four patients were operated on prior to embolization, but surgery failed to control the bleeding in any of these cases. Abdominal compartment syndrome requiring surgical or radiological intervention after embolization developed in 5 patients. One patient died, and 2 had sequelae due to RPH. All 7 patients whose bleeding stopped after embolization had a good clinical outcome. Embolization seems to be an effective and safe method to control the bleeding in patients with RPH secondary to anticoagulant treatment when conservative treatment is insufficient

294

A 3D model of thrombus formation in a stent-graft after implantation in the abdominal aorta.  

Science.gov (United States)

Here we present a 3D kinetic model of thrombus formation in an endovascular prosthesis after implantation in an abdominal aorta with an aneurysm. The computational fluid dynamic technique (CFD) was used to determine the process of thrombus formation and growth in the stent-graft on the basis of the medical data from computed tomography angiography and Doppler ultrasound examination of 10 patients. The Quemada model was used to describe rheological properties of blood. Results of the CFD simulations were validated based on actual data from patients with diagnosed thrombi in aortic implants. The results show that the elaborated CFD model correctly predicted thrombus formation, shape and deposition site in an endovascular prosthesis. The developed CFD model of thrombus growth can be applied to predict the risk of thrombus formation in stent-grafts and assist in selection of geometry of the endovascular prosthesis to reduce possible complications after stent-graft implantation using only basic medical data. PMID:25543277

Polanczyk, Andrzej; Podyma, Marek; Stefanczyk, Ludomir; Szubert, Wojciech; Zbicinski, Ireneusz

2015-02-01

295

Endovascular management of cavernous and paraclinoid aneurysms.  

Science.gov (United States)

In this article, the relevant anatomy of the cavernous and paraclinoid internal carotid artery is examined. Then the classic presentation of aneurysms in these locations and methods of diagnosis are reviewed. Finally, considerations for deciding to treat these aneurysms and the various endovascular techniques available are discussed. PMID:24994081

Brown, Benjamin; Hanel, Ricardo A

2014-07-01

296

Multiple intracranial aneurysms: endovascular treatment and complications.  

Science.gov (United States)

This study evaluated the results of endovascular embolization of multiple intracranial aneurysms. A retrospective hospital chart and radiograph review were made of all patients with multiple intracranial aneurysms seen between March 2010 and January 2011. Ten patients presented with subarachnoid hemorrhage, four with mass effect, two with brain ischemia and twenty were incidental. These 36 patients harbored 84 aneurysms, 63 of which were treated with endovascular techniques, two by surgical clipping, and 19 were left untreated. Of the coil-treated lesions, a complete endovascular occlusion was achieved in 54 aneurysms (85.7%), and eight (12.7%) presented neck remnants with one (1.6%) stented only. Twenty-six patients (72.2%) underwent coil embolization of more than one aneurysm in the first session. Follow-up angiographic studies in 31 patients demonstrated an unchanged or improved result in 93.0% of the aneurysms (53 lesions) and coil compaction in 7.0% (four lesions). The overall clinical outcome was excellent in 33 patients (91.7%), good in one (2.8%) and fair in two (5.5%). Endovascular techniques may be a particularly suitable method for treating multiple intracranial aneurysms. PMID:25207907

Shen, Xun; Xu, Tao; Ding, Xuan; Wang, Wenlei; Liu, Zhi; Qin, Huaihai

2014-01-01

297

Endovascular repair of ascending aortic pseudoaneurysm.  

Science.gov (United States)

We describe a complex case of ascending aortic pseudoaneurysm after open repair of ascending aortic aneurysm and aortic valve replacement. Although treatment was complicated due to intra-operative graft migration, the patient was successfully treated with endovascular technique. PMID:21724107

Garg, Nitin; Bacharach, J Michael; Reynolds, Tommy R

2011-07-01

298

Endovascular Treatment of AVF after Hair Transplantation  

International Nuclear Information System (INIS)

Arteriovenous fistula (AVF) of the scalp is a very rare complication of hair transplantation. Only 9 cases have been reported in nearly half a century. The diagnosis is clinical but angiography is necessary for defining the angioarchitecture of the lesion. Due to technical developments, endovascular embolization has become the primary treatment for AVF of the scalp.

299

Endovascular Treatment of an Aortobronchial Fistula  

International Nuclear Information System (INIS)

A 67-year-old man operated on 8 years previously for type B aortic dissection presented with two episodes of massive hemoptysis. An aortobronchial fistula was suspected with spiral computed tomography angiography, and showed a small pseudoaneurysm corresponding to the distal anastomotic site. The patient underwent endovascular stent-graft implantation and is asymptomatic 8 months after the procedure

300

Endovascular treatment of renal arteriovenous malformations.  

Science.gov (United States)

We report a case of renal arteriovenous malformation treated with superselective endovascular embolization using a light mixture of n-butyl-2-cyanoacrylate and Lipiodol. Diagnostic imaging modalities and treatment methods are discussed. In conclusion, successful superselective embolization should be the standard of care. PMID:15711117

Chatziioannou, A; Mourikis, D; Kalaboukas, K; Ladopoulos, Ch; Magoufis, G; Primetis, E; Katsenis, K; Vlahos, L

2005-01-01

301

Endovascular treatment of AVF after hair transplantation.  

Science.gov (United States)

Arteriovenous fistula (AVF) of the scalp is a very rare complication of hair transplantation. Only 9 cases have been reported in nearly half a century. The diagnosis is clinical but angiography is necessary for defining the angioarchitecture of the lesion. Due to technical developments, endovascular embolization has become the primary treatment for AVF of the scalp. PMID:17952502

Dogan, Sozen; Cinar, Celal; Demirpolat, Gulen; Memis, Ahmet

2008-07-01

302

Abdominal Pain, Short-Term  

Science.gov (United States)

... another. But sudden severe abdominal pain, also called acute pain, shouldn't be ignored. It often indicates a ... problem. Follow this chart for more information about acute abdominal pain. Or find more information about abdominal pain that ...

303

Toxicity of abdominal fat  

Directory of Open Access Journals (Sweden)

Full Text Available Abdominal fat or truncal obesity consists of both subcutaneous and visceral fat. It has been found that visceral fat is more metabolically active than subcutaneous fat. The low-level inflammation linked with abdominal fat is associated with insulin resistance and with increases in the release of inflammatory adipokines and cytokines. As a result of these changes, abdominal fat can cause a variety of health conditions. In this review, we focus on the adverse effects of abdominal fat on the body and how it can lead to the development of cardiovascular disease, hypertension, type 2 diabetes mellitus, hyperlipidemia, stroke and cancer. Additionally, we discuss how abdominal fat can be reduced as a result from correction of hormonal deficiencies.

Shawn Mathew

2013-08-01

304

Abdominal hernias: Radiological features  

Directory of Open Access Journals (Sweden)

Full Text Available Abdominal wall hernias are common diseases of the abdomen with a global incidence approximately 4%-5%. They are distinguished in external, diaphragmatic and internal hernias on the basis of their localisation. Groin hernias are the most common with a prevalence of 75%, followed by femoral (15% and umbilical (8%. There is a higher prevalence in males (M:F, 8:1. Diagnosis is usually made on physical examination. However, clinical diagnosis may be difficult, especially in patients with obesity, pain or abdominal wall scarring. In these cases, abdominal imaging may be the first clue to the correct diagnosis and to confirm suspected complications. Different imaging modalities are used: conventional radiographs or barium studies, ultrasonography and Computed Tomography. Imaging modalities can aid in the differential diagnosis of palpable abdominal wall masses and can help to define hernial contents such as fatty tissue, bowel, other organs or fluid. This work focuses on the main radiological findings of abdominal herniations.

Francesco Lassandro

2011-01-01

305

Tratamento endovascular de aneurismas cirsoideos do couro cabeludo / Endovascular treatment of scalp cirsoid aneurysms  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Languages: English, Portuguese Abstract in portuguese OBJETIVO: Relatar os resultados da aplicação de técnicas endovasculares no tratamento de aneurismas cirsoideos do couro cabeludo. MATERIAIS E MÉTODOS: Quatro pacientes com diagnóstico de aneurismas cirsoideos foram submetidos ao tratamento por via endovascular. Todos os quatro pacientes incluídos ne [...] sta série tinham malformações arteriovenosas e foram tratados apenas com embolização. RESULTADOS: Três pacientes foram submetidos a tratamento endovascular mediante embolização transarterial e um foi tratado por punção direta da porção venosa. Os resultados clínicos e cosméticos foram satisfatórios em todos os pacientes. Não houve recidiva clínica durante o período de acompanhamento. CONCLUSÃO: A via endovascular é uma alternativa segura e eficaz no tratamento dos aneurismas cirsoideos. Embora possa ser efetivamente utilizado como uma alternativa adjuvante ou complementar à cirurgia, especialmente quando é necessário lidar com aferências profundas, a maioria dos casos pode ser totalmente curada apenas com a terapêutica endovascular. A escolha do método de tratamento deve ser baseada em uma variedade de características próprias da lesão, incluindo sua angioarquitetura, tamanho e apresentação clínica. Abstract in english OBJECTIVE: To report results of the application of endovascular techniques in the management of scalp cirsoid aneurysms. MATERIALS AND METHODS: Four patients diagnosed with cirsoid aneurysms were submitted to treatment by endovascular approach. All the four patients included in the present series ha [...] d arteriovenous malformations and were treated solely by embolization. RESULTS: Three of the patients underwent endovascular treatment by transarterial embolization and one was treated by direct puncture of the venous segment. Both clinical and cosmetic outcomes were satisfactory in all of the patients. Clinical relapse was not observed along the follow-up period. CONCLUSION: The endovascular approach is safe and effective in the management of crisoid aneurysms. Although this technique can be used as an adjuvant or complement to surgery, particularly in cases where deep afferents are involved, complete resolution can be achieved only with endovascular treatment. The choice of treatment method should be based on a range of typical characteristics of the lesion, including angioarchitecture, size and clinical presentation.

Eduardo, Wajnberg.

2010-08-01

306

Hernia abdominal traumáti Traumatic abdominal hernia  

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Full Text Available Las hernias abdominales traumáticas son un tipo de hernias adquiridas, secundarias a traumatismo cerrado. Se reportan dos casos de este tipo de lesiones, uno de ellos con lesión abdominal significativa asociada. En uno de los casos, se corrigió el defecto por planos y fijación de malla de polipropileno por encima de la fascia; el otro fue corregido con malla por abordaje laparoscópico. En ambos casos, el periodo posoperatorio transcurrió sin complicaciones. Se presenta una revisión de la literatura.Traumatic abdominal wall hernias are a type of acquired hernias secondary to blunt trauma. We report two cases of such hernias, one of them with significant intra-abdominal injury. One wall defect was repaired in layers and fixation of polypropylene mesh over the fascia. The other case was repaired by laparoscopy. Postoperative course was uneventful. The latest literature is reviewed. With this literature review and case report we hope to augment the knowledge on traumatic abdominal wall hernias, hopefully leading to early diagnosis and treatment.

Carlos Hernando Morales

2011-12-01

307

Hernia abdominal traumáti / Traumatic abdominal hernia  

Scientific Electronic Library Online (English)

Full Text Available SciELO Colombia | Language: Spanish Abstract in spanish Las hernias abdominales traumáticas son un tipo de hernias adquiridas, secundarias a traumatismo cerrado. Se reportan dos casos de este tipo de lesiones, uno de ellos con lesión abdominal significativa asociada. En uno de los casos, se corrigió el defecto por planos y fijación de malla de polipropil [...] eno por encima de la fascia; el otro fue corregido con malla por abordaje laparoscópico. En ambos casos, el periodo posoperatorio transcurrió sin complicaciones. Se presenta una revisión de la literatura. Abstract in english Traumatic abdominal wall hernias are a type of acquired hernias secondary to blunt trauma. We report two cases of such hernias, one of them with significant intra-abdominal injury. One wall defect was repaired in layers and fixation of polypropylene mesh over the fascia. The other case was repaired [...] by laparoscopy. Postoperative course was uneventful. The latest literature is reviewed. With this literature review and case report we hope to augment the knowledge on traumatic abdominal wall hernias, hopefully leading to early diagnosis and treatment.

Carlos Hernando, Morales; Jaime Andrés, Montoya; Óscar, Henao.

2011-12-01

308

Endovascular repair of traumatic external iliac vessel pseudoaneurysm and arteriovenous fistulae / Tratamento endovascular de pseudoaneurisma traumatico e fistulas arteriovenosas em vasos iliacos externos  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: English Abstract in portuguese Um paciente do sexo masculino com 17 anos de idade apresentando-se com ferimento abdominal por arma de fogo e choque hipovolêmico grave foi inicialmente operado e apresentava várias lesões no intestino delgado e ceco associadas a hemorragia grave. O paciente teve que ser operado duas vezes devido a [...] hipotermia, acidose e coagulopatia. No período pós-operatório tardio, foram observados sopro e frêmito. Angiografia revelou um pseudoaneurisma associado a fístulas arteriovenosas nos vasos ilíacos externos ao lado esquerdo. As lesões foram tratadas mediante a colocação de stent na artéria ilíaca externa, com desfecho satisfatório. Tomografia computadorizada de controle realizada após 6 meses evidenciou integridade da artéria, com o fechamento das fístulas. O tratamento endovascular deve ser o método de escolha nesse tipo de complicação vascular traumática. Abstract in english A 17-year-old male patient presenting with an abdominal gunshot wound and severe hypovolemic shock was initially operated and presented several injuries to the small bowel and cecum associated with severe hemorrhage. The patient had to be operated twice due to hypothermia, acidosis, and coagulopathy [...] . In the late postoperative period, murmur and fremitus were observed. Angiography revealed a pseudoaneurysm associated with arteriovenous fistulae at the left external iliac vessels. Lesions were repaired with a stent graft placed in the external iliac artery, with a satisfactory outcome. Control computed tomography performed 6 months later evidenced artery integrity with closure of the fistulae. Endovascular therapy should be the preferred method in this type of vascular trauma complications.

Juan, Marin; Beatriz, Retamales; Camila, Onetto; Enrique, Ceroni; Cristian, Marin.

2013-09-01

309

Mifepristona para tratamiento del fibroma uterino / The use of Mifepristone for treatment of the uterine fibroma  

Scientific Electronic Library Online (English)

Full Text Available SciELO Cuba | Language: Spanish Abstract in spanish OBJETIVOS: Evaluar la eficacia, seguridad y duración de la mejoría clínica en el tiempo de la administración de 5 vs. 10 mg diarios de mifepristona en el tratamiento del fibroma. MÉTODOS: Fueron aleatorizadas a recibir 5 ó 10 mg diarios de mifepristona oral durante 3 meses y fueron seguidas durante [...] 6 meses después, 100 mujeres con fibromatosis uterina sintomática. Se calcularon los volúmenes del fibroma y del útero por ultrasonografía abdominal del útero al inicio, al final del tratamiento, 3 y 6 meses después. RESULTADOS: Al final del tratamiento el fibroma se redujo en 38,3 %, p

Josep Lluis, Carbonell Esteve; Rita, Acosta; Braulio, Heredia; Yasmiriam, Pérez; María C., Yero Castañeda; Isabel, Seigler; Juan Carlos, Andreu Ballester.

2010-06-01

310

Tratamiento intervencionista / Interventional treatment  

Scientific Electronic Library Online (English)

Full Text Available Con el advenimiento de la terapia intervencionista se dio campo a una modalidad más de tratamiento que podría brindar la oportunidad a aquellos pacientes que por diferentes motivos no podían ser llevados a tratamientos quirúrgicos. De esta forma, las terapias locorregionales (ablación percutánea y q [...] uimioembolización) se han constituido en un apoyo como terapias curativas y paliativas en pacientes sin otra opción. Sin embargo, las terapias locorregionales deben estar enmarcadas en la estratificación clínica del CHC, que nos permite estimar la expectativa de vida, el mejor tratamiento para su estadio y un balance de riesgos y beneficios del tratamiento escogido Abstract in english The advent of interventional therapy has given a wider field to a form of treatment that could provide an opportunity to those patients who, for various reasons, cannot undergo surgical treatments. Thus, local and regional therapies such as percutaneous ablation and chemoembolization have become sup [...] porting curative and palliative therapies for patients with no other choice. However, local and regional therapies should be framed within the clinical stratification of HCC which allows us to estimate the life expectancy and the best treatment for the patient’s stage and the balance of risks and benefits of the treatment chosen.

Juan Manuel, Pérez; Oscar Alfredo, Beltrán Galvis.

2013-09-30

311

ROTURA DE ANEURISMA AORTICO ABDOMINAL: REPORTE DE UN CASO Y REVISION DE LITERATURA  

Directory of Open Access Journals (Sweden)

Full Text Available : La rotura de un aneurisma de aorta abdominal es una complicación asociada de alta mortalidad. Además, hay importante morbilidad en la evolución post quirúrgica. Se presenta el caso de un paciente que debuta con dolor abdominal y shock hipovolémico por rotura de aneurisma aórtico abdominal con extravasación activa retroperitoneal, asociada a una fístula aorto cava, en el que se realiza cirugía de urgencia y evoluciona con diversas complicaciones post quirúrgicas. Se discute además la epidemiología, historia natural, diagnóstico y tratamiento de esta patologíaThe rupture of an abdominal aortic aneurysm is a complication associated with high mortality. In addition, there is an important morbidity in post surgical evolution. We introduce a case of a patient who presents abdominal pain and hypovolemic sock, due to rupture of an abdominal aortic aneurysm with an associated aorto cava fistula, who went to emergency surgery and evolved with many post surgical complications. Epidemiology, natural history, diagnosis and treatment of this pathology are discussed

Roberto Cabrera T

2006-01-01

312

Abdominal aortic aneurysm repair - open  

Science.gov (United States)

... to your legs, your kidneys, or other organs Spinal cord injury Wound breaks open Wound infections ... al: DREAM Study Group. Long-term outcome of open or endovascular ... Trial Investigators, Grenhalgh RM, Brown LC, Powell JT, Thompson ...

313

Uso de endoprótesis bifurcada ilíaca para revascularización hipogástrica durante tratamiento de aneurisma aorto-ilíaco Bifurcated iliac endograft in a patient with aortic-iliac aneurysm  

Directory of Open Access Journals (Sweden)

Full Text Available Una anatomía desfavorable es un obstáculo a vencer con el tratamiento endovascular del aneurisma aorto-ilíaco. La presencia de aneurisma ilíaco bilateral es frecuente y amenaza la adecuada fijación distal de una endoprótesis. Esta condición puede ser manejada: a aumentando el diámetro del dispositivo a nivel ilíaco, con limitaciones en las medidas disponibles; b embolización hipogástrica bilateral, aceptando una morbimortalidad mayor; c combinando un abordaje quirúrgico retroperitoneal para revascularizar una arteria hipogástrica, aumentando el impacto del procedimiento; d mediante revascularización retrógrada unilateral desde la arteria ilíaca externa ipsilateral con otra endoprótesis. Recientemente se ha descrito el uso de endoprótesis ramificadas, que requieren un despliegue complejo, pero permiten revascularizar una o ambas arterias hipogástricas en forma anterógrada y estable. Reportamos el caso de un paciente de sexo masculino y 57 años, de alto riesgo para cirugía convencional, portador de un aneurisma pequeño de aorta abdominal y aneurismas ilíaco común bilateral e hipogástrico izquierdo. Fue tratado mediante despliegue de una endoprótesis bifurcada ilíaca, revascularizando la arteria hipogástrica derecha y embolizando la izquierda aneurismática, asociado a implante de una endoprótesis aórtica convencional, también bifurcada. El paciente evoluciona sin complicaciones, con claudicación glútea izquierda leve en disminución y preservación de su función sexual. Una tomografía axial computada demuestra exclusión efectiva de sus aneurismas. Esta nueva técnica permite tratar de manera segura a pacientes portadores de aneurisma ilíaco bilateral en forma endo-vascular, manteniendo perfusión de la circulación pelviana y disminuyendo el impacto de un procedimiento convencional en pacientes de alto riesgo.A difficult anatomy is the major challenge to overcome with abdominal aortic aneurysm endografting. Bilateral iliac aneurysm preventing an appropriate distal landing zone for an endograft is a common condition and can be managed by: a Increasing the diameter of the endograft, with limitations in available sizes; b bilateral hypogastric embolization, accepting an increased morbidity; c combining a surgical hypogastric revascularization by retroperitonel approach or d retrograde revascularization from the ipsilateral external iliac artery using an endograft. Recently, branched endografts have been designed to revascularize the hypo gastric artery. Their deployment is complex but allows antegrade and stable fl ow. We report a 57 year-old male, at high risk for an open procedure, who presented with a small aortic aneurysm, bilateral iliac and left hypogastric aneurysms. A right bifurcated iliac endograft was deployed, associated with left hypogastric aneurysm embolization and aortic endografting. The patient recovered event free, patency of the endograft and absence of endoleak was demonstrated on a CT scan. He presented minor left buttock claudication, sexual function was preserved. This new technique allows safe endovascular treatment of patients with bilateral iliac aneurysm, allowing preservation of pelvic perfusion and avoiding the risk of an open procedure in a high risk patient.

RENATO MERTENS M

2010-06-01

314

Uso de endoprótesis bifurcada ilíaca para revascularización hipogástrica durante tratamiento de aneurisma aorto-ilíaco / Bifurcated iliac endograft in a patient with aortic-iliac aneurysm  

Scientific Electronic Library Online (English)

Full Text Available SciELO Chile | Language: Spanish Abstract in spanish Una anatomía desfavorable es un obstáculo a vencer con el tratamiento endovascular del aneurisma aorto-ilíaco. La presencia de aneurisma ilíaco bilateral es frecuente y amenaza la adecuada fijación distal de una endoprótesis. Esta condición puede ser manejada: a) aumentando el diámetro del dispositi [...] vo a nivel ilíaco, con limitaciones en las medidas disponibles; b) embolización hipogástrica bilateral, aceptando una morbimortalidad mayor; c) combinando un abordaje quirúrgico retroperitoneal para revascularizar una arteria hipogástrica, aumentando el impacto del procedimiento; d) mediante revascularización retrógrada unilateral desde la arteria ilíaca externa ipsilateral con otra endoprótesis. Recientemente se ha descrito el uso de endoprótesis ramificadas, que requieren un despliegue complejo, pero permiten revascularizar una o ambas arterias hipogástricas en forma anterógrada y estable. Reportamos el caso de un paciente de sexo masculino y 57 años, de alto riesgo para cirugía convencional, portador de un aneurisma pequeño de aorta abdominal y aneurismas ilíaco común bilateral e hipogástrico izquierdo. Fue tratado mediante despliegue de una endoprótesis bifurcada ilíaca, revascularizando la arteria hipogástrica derecha y embolizando la izquierda aneurismática, asociado a implante de una endoprótesis aórtica convencional, también bifurcada. El paciente evoluciona sin complicaciones, con claudicación glútea izquierda leve en disminución y preservación de su función sexual. Una tomografía axial computada demuestra exclusión efectiva de sus aneurismas. Esta nueva técnica permite tratar de manera segura a pacientes portadores de aneurisma ilíaco bilateral en forma endo-vascular, manteniendo perfusión de la circulación pelviana y disminuyendo el impacto de un procedimiento convencional en pacientes de alto riesgo. Abstract in english A difficult anatomy is the major challenge to overcome with abdominal aortic aneurysm endografting. Bilateral iliac aneurysm preventing an appropriate distal landing zone for an endograft is a common condition and can be managed by: a) Increasing the diameter of the endograft, with limitations in av [...] ailable sizes; b) bilateral hypogastric embolization, accepting an increased morbidity; c) combining a surgical hypogastric revascularization by retroperitonel approach or d) retrograde revascularization from the ipsilateral external iliac artery using an endograft. Recently, branched endografts have been designed to revascularize the hypo gastric artery. Their deployment is complex but allows antegrade and stable fl ow. We report a 57 year-old male, at high risk for an open procedure, who presented with a small aortic aneurysm, bilateral iliac and left hypogastric aneurysms. A right bifurcated iliac endograft was deployed, associated with left hypogastric aneurysm embolization and aortic endografting. The patient recovered event free, patency of the endograft and absence of endoleak was demonstrated on a CT scan. He presented minor left buttock claudication, sexual function was preserved. This new technique allows safe endovascular treatment of patients with bilateral iliac aneurysm, allowing preservation of pelvic perfusion and avoiding the risk of an open procedure in a high risk patient.

RENATO, MERTENS M; ALBRECHT, KRÄMER SCH; FRANCISCO, VALDÉS E; LEOPOLDO, MARINÉ M; MICHEL, BERGOEING R.

2010-06-01

315

Outcomes of endovascular repair of ruptured descending thoracic aortic aneurysms  

OpenAIRE

Background-: Thoracic endovascular aortic repair offers a less invasive approach for the treatment of ruptured descending thoracic aortic aneurysms (rDTAA). Due to the low incidence of this life-threatening condition, little is known about the outcomes of endovascular repair of rDTAA and the factors that affect these outcomes. Methods and Results-: We retrospectively investigated the outcomes of 87 patients who underwent thoracic endovascular aortic repair for rDTAA at 7 referral centers betw...

Jonker, F. H. W.; Verhagen, H. J. M.; Lin, P. H.; Heijmen, R. H.; Trimarchi, S.; Lee, W. A.; Moll, F. L.; Athamneh, H.; Muhs, B. E.

2010-01-01

316

Endovascular Training of Vascular Surgeons in the USA  

OpenAIRE

Current trends in vascular surgery in the USA are driven by increased demand for endovascular procedures. Traditionally-trained vascular surgeons have adapted to these trends by acquiring endovascular skills; vascular surgery fellowships were standardized to 2-years to incorporate endovascular training. However, the traditional “5 + 2” training paradigm appears to be less appealing to the current generation of surgical students, resulting in fellowship positions going unfilled, and potent...

Assi, Roland; Dardik, Alan

2012-01-01

317

Abdominal tuberculosis in children  

International Nuclear Information System (INIS)

Four boys with abdominal tuberculosis, one of whom had acquired immunodeficiency syndrome, are presented. Abdominal imaging findings on plain radiography, ultrasonography, computer tomography, and gastrointestinal contrast studies included tuberculous peritonitis and ascites in all patients, tuberculous adenopathy in two, gastrointestinal tuberculosis in two, and omental tuberculosis in two. The radiographic features particularly characteristic of abdominal tuberculosis were: (1) Low attenuating adenopathy with rim enhancement, (2) omental or ileocecal inflammatory mass, (3) high density ascites, and (4) gastrointestinal enteritis involving the ileocecal region. (orig./MG)

318

Abdominal tuberculosis in children  

Energy Technology Data Exchange (ETDEWEB)

Four boys with abdominal tuberculosis, one of whom had acquired immunodeficiency syndrome, are presented. Abdominal imaging findings on plain radiography, ultrasonography, computer tomography, and gastrointestinal contrast studies included tuberculous peritonitis and ascites in all patients, tuberculous adenopathy in two, gastrointestinal tuberculosis in two, and omental tuberculosis in two. The radiographic features particularly characteristic of abdominal tuberculosis were: (1) Low attenuating adenopathy with rim enhancement, (2) omental or ileocecal inflammatory mass, (3) high density ascites, and (4) gastrointestinal enteritis involving the ileocecal region. (orig./MG)

Ablin, D.S. [University of California, Davis Medical Center, CA (United States); Jain, K.A. [University of California, Davis Medical Center, CA (United States); Azouz, E.M. [McGill University, Montreal Children`s Hospital, PQ (Canada)

1994-11-01

319

Pediatric abdominal CT angiography  

International Nuclear Information System (INIS)

Advancing multidetector technology offers opportunities for improved vascular assessment in children. Much of what is available deals with thoracic and central nervous system applications, with very little written about abdominal applications. That said, many of the technical aspects are similar to computed tomography (CT) angiography in these regions and are worthy of reviewing, in addition to those unique considerations for abdominal CT angiography (CTA) in children. Familiarity with appropriate abdominal CTA for pediatric multidetector array CT will provide the same opportunities as CTA in other regions. (orig.)

320

ENDOMETRIOSIS DE LA PARED ABDOMINAL  

Scientific Electronic Library Online (English)

Full Text Available SciELO Chile | Language: Spanish Abstract in spanish Antecedentes: La presencia de endometriosis de la pared abdominal (EPA) suele confundirse con otras patologías médico-quirúrgicas que aparecen en la misma zona. Objetivo: Evaluar las características clínicas de la EPA. Método: Se realizó un estudio retrospectivo de todas las pacientes hospitalizadas [...] con el diagnóstico histopatológico de EPA entre enero de 1997 y diciembre de 2005. Resultados: Se encontraron 14 pacientes, con edad promedio de 33,2 años. Los principales síntomas fueron: dolor cíclico (71,4%), masa abdominal (100%), dispareunia (21,4%) y dismenorrea (42,8%). Todas la pacientes tuvieron al menos una cirugía ginecológica (2 con procedimientos laparoscópicos) u obstétrica (85,7% cesárea). Sólo una paciente se había diagnosticado previamente de endometriosis. Los síntomas comenzaron en promedio 3,5 años posteriores a la última cirugía. Las EPA tenían un tamaño promedio de 3,2 cm. El diagnóstico pre-operatorio fue correcto en el 64,3% de las pacientes. Los diagnósticos incorrectos correspondieron a 3 granulomas, una hernia inguinal y un lipoma. Todas las pacientes requirieron cirugía y en el 64,3% fue necesario la utilización de mallas polytetrafluoethyleno. Cuatro pacientes (28,5%) presentaron recurrencias. 60% de los diagnósticos iniciales incorrectos v/s 11,1% de los acertados recurrieron. Conclusiones: La EPA puede encontrarse en cicatrices tanto ginecológicas como obstétricas. Los síntomas comunes son masas con dolor cíclico. La ecografía de pared abdominal fue suficiente para enfrentar el diagnóstico diferencial. El diagnóstico pre-operatorio es importante para planificar la cirugía porque redujo las recurrencias. El tratamiento de elección es la cirugía con resección amplia de los bordes Abstract in english Background: The presence of abdominal wall endometriosis (AWE) used to be confused with other surgical pathologies that may appear in these zones. Objective: To evaluate the AWE clinical characteristics. Method: Retrospective study of all the patients hospitalized with the histopathologycal diagnosi [...] s of AWE, between January 1997 and December 2005. Results: There was found AWE only in 14 patients. Their mean age was 33.2 years old. The symptoms were: cyclic pain (71.4%), abdominal wall mass (100%), dyspareunia (21.4%) and dysmenorrhea (42.8%). All patients had at least one gynecologic (2 patients with laparoscopic procedures) or obstetric surgery (85.7% had previous cesarean section). Only one patient had previously been diagnosed with pelvic endometriosis. Their symptoms started after an average of 3.5 years after surgery. The AWE had a mean size of 3.2 cm. The preoperative diagnosis was correct in 64.3%. The incorrect preoperative diagnoses were 3 granuloma, 1 inguinal hernia and 1 lipoma. All patients required surgery. 64.3% of the patients it was necessary a polytetrafluoethylene mesh. Four patients (28.5%) had AWE recurrences. 60% of the wrong initial diagnosis recurred versus 11.1% of the correct ones. Conclusion: AWE may be present in gynecologic or obstetric scars. Their common symptoms are masses with cyclic pain. Ultrasonography is enough to approach the differential diagnosis. The correct preoperative diagnosis is important to plan surgery and reduce recurrences. The surgical wide excision is the preferable treatment. Establishing clear endometriosis limits reduce the recurrences

Antonio, Carvajal M; Italo, Braghetto M; Rodrigo, Carvajal G; Cristián, Miranda V.

321

ENDOMETRIOSIS DE LA PARED ABDOMINAL  

Directory of Open Access Journals (Sweden)

Full Text Available Antecedentes: La presencia de endometriosis de la pared abdominal (EPA suele confundirse con otras patologías médico-quirúrgicas que aparecen en la misma zona. Objetivo: Evaluar las características clínicas de la EPA. Método: Se realizó un estudio retrospectivo de todas las pacientes hospitalizadas con el diagnóstico histopatológico de EPA entre enero de 1997 y diciembre de 2005. Resultados: Se encontraron 14 pacientes, con edad promedio de 33,2 años. Los principales síntomas fueron: dolor cíclico (71,4%, masa abdominal (100%, dispareunia (21,4% y dismenorrea (42,8%. Todas la pacientes tuvieron al menos una cirugía ginecológica (2 con procedimientos laparoscópicos u obstétrica (85,7% cesárea. Sólo una paciente se había diagnosticado previamente de endometriosis. Los síntomas comenzaron en promedio 3,5 años posteriores a la última cirugía. Las EPA tenían un tamaño promedio de 3,2 cm. El diagnóstico pre-operatorio fue correcto en el 64,3% de las pacientes. Los diagnósticos incorrectos correspondieron a 3 granulomas, una hernia inguinal y un lipoma. Todas las pacientes requirieron cirugía y en el 64,3% fue necesario la utilización de mallas polytetrafluoethyleno. Cuatro pacientes (28,5% presentaron recurrencias. 60% de los diagnósticos iniciales incorrectos v/s 11,1% de los acertados recurrieron. Conclusiones: La EPA puede encontrarse en cicatrices tanto ginecológicas como obstétricas. Los síntomas comunes son masas con dolor cíclico. La ecografía de pared abdominal fue suficiente para enfrentar el diagnóstico diferencial. El diagnóstico pre-operatorio es importante para planificar la cirugía porque redujo las recurrencias. El tratamiento de elección es la cirugía con resección amplia de los bordesBackground: The presence of abdominal wall endometriosis (AWE used to be confused with other surgical pathologies that may appear in these zones. Objective: To evaluate the AWE clinical characteristics. Method: Retrospective study of all the patients hospitalized with the histopathologycal diagnosis of AWE, between January 1997 and December 2005. Results: There was found AWE only in 14 patients. Their mean age was 33.2 years old. The symptoms were: cyclic pain (71.4%, abdominal wall mass (100%, dyspareunia (21.4% and dysmenorrhea (42.8%. All patients had at least one gynecologic (2 patients with laparoscopic procedures or obstetric surgery (85.7% had previous cesarean section. Only one patient had previously been diagnosed with pelvic endometriosis. Their symptoms started after an average of 3.5 years after surgery. The AWE had a mean size of 3.2 cm. The preoperative diagnosis was correct in 64.3%. The incorrect preoperative diagnoses were 3 granuloma, 1 inguinal hernia and 1 lipoma. All patients required surgery. 64.3% of the patients it was necessary a polytetrafluoethylene mesh. Four patients (28.5% had AWE recurrences. 60% of the wrong initial diagnosis recurred versus 11.1% of the correct ones. Conclusion: AWE may be present in gynecologic or obstetric scars. Their common symptoms are masses with cyclic pain. Ultrasonography is enough to approach the differential diagnosis. The correct preoperative diagnosis is important to plan surgery and reduce recurrences. The surgical wide excision is the preferable treatment. Establishing clear endometriosis limits reduce the recurrences

Antonio Carvajal M

2007-01-01

322

Endovascular repair of aortic aneurysms, arteriovenous fistulas, and false aneurysms.  

Science.gov (United States)

Between September 1990 and June 1995, 103 patients were treated with transluminal placed endovascular grafts: 87 had abdominal aortic aneurysms (AAA), two had iliac artery aneurysms (one in association with an AAA), 3 had thoracic aneurysms, and 12 had vascular injuries in various localization of the arterial tree. The AAAs were excluded from the blood flow with a device composed of a balloon-expandable stent (modification of the Palmaz stent) attached to a Dacron graft designed to expand at both ends of the accompanying stent extension. An 18F sheath containing the stent-graft device was introduced through a small cut-down in the common femoral arteries and advanced under fluoroscopic guidance. Color duplex, contrast-enhanced computed tomography (CT) scanning and angiography were performed before the procedure and then every 6 months. (Arteriography was performed once during the follow-up period and whenever other studies disclosed an abnormal finding.) A total of 87 patients (75 men, 12 women) harboring an AAA were treated: Forty-five patients underwent an aortoaortic procedure (8 patients had only a proximal stent implanted, and 37 had proximal and distal stents). Forty-two patients were treated by implanting an aortoiliac graft, completing the procedure with a femorofemoral bypass. The contralateral common iliac artery was occluded by means of an occluding stent. One type A dissecting aneurysm and two descending thoracic aneurysms were successfully treated by the endovascular technique. The longest follow-up period was 60 months and the shortest 1 month. Initial success was obtained in 84% of the aortoaortic cases and in 75% of the aortoiliac procedures. Long-term follow-up (> 12 months) disclosed 78% success for the aortoaortic cases and 90% for the aortoiliac procedures. Late failures included distal aortic dilatation, distal leak into the aneurysmal cavity, and proximal leak into the aneurysm. All trauma cases were successful over the short and long terms. Trauma cases included false aneurysms (common carotid, subclavian, common femoral arteries) and arteriovenous fistulas (subclavian, aortocava, common iliac-cava and superficial femoral artery and vein). We concluded that stent-graft combination devices appear to be an alternative for treating vascular trauma and aneurysms. Initial success for treating AAAs is almost 100%, and late success in aortoiliac cases is also high (90%) for aortoaortic reconstruction. However, late failures are frequent and require further evaluation in relation to a persistent increase in the diameter of the proximal neck and distal cuff. PMID:8662149

Parodi, J C

1996-01-01

323

Endovascular treatment of the carotid-cavernous vascular lesions / Tratamento endovascular das lesões vasculares carotidocavernosas  

Scientific Electronic Library Online (English)

Full Text Available Introduction: The treatment of lesions which compromise the cavernous sinus has always constituted a challenge. The endovascular treatment of these lesions has presented diverse alterations over the last years. This study aims to evaluate the endovascular treatment of vascular lesions in the inter [...] nal carotid artery (ICA), cavernous segment, performed at our service. Method: This is a descriptive study, retrospective and prospective. Patients with aneurysm in the cavernous ICA or direct carotid-cavernous fistula (dCCF) submitted to endovascular treatment were evaluated. Results: Included were 26 patients with intracavernous aneurysms and 10 with dCCF. All aneurysms were treated with ICA occlusion. The dCCF were treated with occlusion of the ICA in seven cases and with selective fistula occlusion in the remaining three. There was an improvement in pain and ocular proptosis in all patients with dCCF. In the patients with intracavernous aneurysms, the incidence of retroorbitary pain went from 84.6% to a mere 30.8%, following the treatment. Following endovascular treatment, there was an important improvement in the dysfunction of cranial nerves, compromised in both patient groups, mainly in the oculomotor nerve. Conclusion: The endovascular treatment provided an improvement in the patients of this study, especially in the criteria pain and oculomotor nerve dysfunction.

Guilherme Brasileiro de, Aguiar.

2014-07-01

324

Abdominal tuberculosis: Imaging features  

Energy Technology Data Exchange (ETDEWEB)

Radiological findings of abdominal tuberculosis can mimic those of many different diseases. A high level of suspicion is required, especially in high-risk population. In this article, we will describe barium studies, ultrasound (US) and computed tomography (CT) findings of abdominal tuberculosis (TB), with emphasis in the latest. We will illustrate CT findings that can help in the diagnosis of abdominal tuberculosis and describe imaging features that differentiate it from other inflammatory and neoplastic diseases, particularly lymphoma and Crohn's disease. As tuberculosis can affect any organ in the abdomen, emphasis is placed to ileocecal involvement, lymphadenopathy, peritonitis and solid organ disease (liver, spleen and pancreas). A positive culture or hystologic analysis of biopsy is still required in many patients for definitive diagnosis. Learning objectives:1.To review the relevant pathophysiology of abdominal tuberculosis. 2.Illustrate CT findings that can help in the diagnosis.

Pereira, Jose M. [Department of Radiology, Hospital de S. Joao, Porto (Portugal)]. E-mail: jmpjesus@yahoo.com; Madureira, Antonio J. [Department of Radiology, Hospital de S. Joao, Porto (Portugal); Vieira, Alberto [Department of Radiology, Hospital de S. Joao, Porto (Portugal); Ramos, Isabel [Department of Radiology, Hospital de S. Joao, Porto (Portugal)

2005-08-01

325

Abdominal tuberculosis: Imaging features  

International Nuclear Information System (INIS)

Radiological findings of abdominal tuberculosis can mimic those of many different diseases. A high level of suspicion is required, especially in high-risk population. In this article, we will describe barium studies, ultrasound (US) and computed tomography (CT) findings of abdominal tuberculosis (TB), with emphasis in the latest. We will illustrate CT findings that can help in the diagnosis of abdominal tuberculosis and describe imaging features that differentiate it from other inflammatory and neoplastic diseases, particularly lymphoma and Crohn's disease. As tuberculosis can affect any organ in the abdomen, emphasis is placed to ileocecal involvement, lymphadenopathy, peritonitis and solid organ disease (liver, spleen and pancreas). A positive culture or hystologic analysis of biopsy is still required in many patients for definitive diagnosis. Learning objectives:1.To review the relevant pathophysiology of abdominal tuberculosis. 2.Illustrate CT findings that can help in the diagnosis

326

Abdominal ultrasound (image)  

Science.gov (United States)

Abdominal ultrasound is a scanning technique used to image the interior of the abdomen. Like the X-ray, MRI, ... it has its place as a diagnostic tool. Ultrasound scans use high frequency sound waves to produce ...

327

Lateral Abdominal Wall Reconstruction  

OpenAIRE

Lateral abdominal wall (LAW) defects can manifest as a flank hernias, myofascial laxity/bulges, or full-thickness defects. These defects are quite different from those in the anterior abdominal wall defects and the complexity and limited surgical options make repairing the LAW a challenge for the reconstructive surgeon. LAW reconstruction requires an understanding of the anatomy, physiologic forces, and the impact of deinnervation injury to design and perform successful reconstructions of her...

Baumann, Donald P.; Butler, Charles E.

2012-01-01

328

Imaging in Tuberculosis abdominal  

International Nuclear Information System (INIS)

In this article we illustrate and discuss imaging features resulting from Tuberculosis abdominal affectation. We present patients evaluated with several imaging modalities who had abdominal symptoms and findings suggestive of granulomatous disease. Diagnosis was confirm including hystopatology and clinical outgoing. Cases involved presented many affected organs such as lymphatic system, peritoneum, liver, spleen, pancreas, kidneys, ureters, adrenal glands and pelvic organs Tuberculosis, Tuberculosis renal, Tuberculosis hepatic, Tuberculosis splenic Tomography, x-ray, computed

329

Endovascular Techniques in Limb Salvage: Stents  

OpenAIRE

In patients with critical limb ischemia, the first-line approach for limb salvage has shifted over the past decade from bypass surgery to endovascular intervention. Stenting for the treatment of lower-extremity arterial occlusive disease is an important tool and continues to evolve, with new stent designs and technologies that have been developed to provide superior patency rates and limb salvage. In this article, we discuss the role of peripheral stenting in the treatment of patients with cr...

El-sayed, Hosam F.

2013-01-01

330

Large Diameter Limbs for Dilated Common Iliac Arteries in Endovascular Aneurysm Repair. Is It Safe?  

International Nuclear Information System (INIS)

In this prospective study we examined whether dilated common iliac arteries (CIAs) can provide a safe distal seal in endovascular aneurysm repair (EVAR) with the use of bifurcated stent grafts with large diameter limbs. Sixteen patients with 26 dilated CIAs with a diameter of ?6 mm who were offered EVAR using stent grafts with large diameter limbs were included in the study (Group A). Forty-two patients who also underwent EVAR without iliac dilatation, matched for age, sex and surgical risk were used for comparison (controls-Group B). In group A mean CIA diameter was 18.2 mm (16-28) and mean abdominal aortic aneurysm (AAA) diameter was 6.87 ± 1.05 cm; mean age was 77.2 ± 4.8 yrs (67-81). Mean follow-up was 33.6 months (2.8 yrs). CIA diameter changes and development of endoleaks were assessed by CT angiography (CTA). Overall iliac dilatation was present in 16/58 of our patients (27.6%). In 10 patients dilatation was bilateral (17.3%). Partial or complete flow to the internal iliac artery (IIA) territories was preserved in all patients post-EVAR. On follow-up, stable caliber of the dilated CIAs was observed in 21 patients (84%), enlargement of 1mm in 3 (16%), and failure of the distal attachment in 1 (6.2%). Compared to the control group there was no statistical significance in the incidence of complications. Dilated common iliac arteries provide a safe distal seal in patients who have undergone EVAR, thus obviating the need for additional endovascular procedures an additional endovascular procedures and sparing flow in the IIA vascular bed

331

Balloon-expandable common iliac artery occluder device for endovascular aneurysm repair.  

Science.gov (United States)

This study was performed to evaluate the efficacy of a balloon-expandable Palmaz stent common iliac artery occluder device for endovascular stent-graft repair of aortoiliac aneurysms. Eighty-four patients (79 men, 5 women; age range 60-95 yr; mean age, 76 yr) with aortoiliac aneurysms underwent endovascular stent-graft repair. The repair consisted of a stent-graft extending from the abdominal aorta to the iliac or common femoral artery, a cross-femoral bypass graft, and an endovascular arterial occluder device within the contralateral common iliac artery. The occluder device consisted of a 5-cm segment of 6-mm diameter polytetrafluoroethylene (PTFE) graft with a purse-string suture occluding the leading end and a Palmaz stent sutured to the trailing end. The occluder device was delivered through a 17F catheter via an arteriotomy. Eighty-three of the 84 patients received aortic endografts. In one case, infrarenal aortic rupture occurred during deployment of the aortic stent requiring conversion to an open surgical repair. Initial technical success for occluder device insertion was achieved in 78 of the remaining 83 patients. Failure to advance the occluder device delivery sheath through a diseased iliac artery occurred in one patient. Common iliac artery rupture occurred during balloon expansion and occluder device deployment in two patients. Two patients required additional coil embolization of the common iliac artery adjacent to the occluder device at the time of stent-graft insertion to correct incomplete iliac occlusion. Delayed occluder device-related complications included one patient with a postoperative iliac endoleak who required percutaneous coil embolization and one patient with a postoperative iliac endoleak in whom a contained aortic aneurysm rupture developed that was treated by surgical ligation of the common iliac artery. Use of the Palmaz stent-based iliac artery occluder device is an effective technique to induce common iliac artery thrombosis to facilitate endoluminal stent-graft aneurysm repair. PMID:11586452

Silberzweig, J E; Marin, M L; Hollier, L H; Mitty, H A; Connelly, T L

2001-01-01

332

éste durante el tratamiento  

Directory of Open Access Journals (Sweden)

Full Text Available El objetivo de esta investigación fue estudiar si las creencias relacionadas con la vivencia del acompañamiento de un familiar en el tratamiento de un drogodependiente, y las del mismo paciente, varían en función de aspectos como el tiempo de abstinencia, el tiempo dedicado al tratamiento, la presencia de patología dual en el drogodependiente, la gravedad de ajuste psicológico del acompañante, los años de evolución de la drogodependencia y el tiempo transcurrido desde que se conoce el problema. La muestra estuvo compuesta por 130 personas, 65 familiares y 65 drogodependientes en tratamiento en centros ambulatorios. Para el análisis de los datos, obtenidos éstos, mediante distintos diseños cuasi-experimentales de grupos no aleatorios, se aplicó la prueba ?t-Student? para un nivel de significación del 0,05. Se analizaron las relaciones bivariadas entre las variables descritas y las diferentes creencias tanto en los pacientes como en los familiares de éstos. Los resultados mostraron que las creencias evaluadas están presentes en la experiencia del adicto y del familiar, cambiando éstas a través de los valores de las variables manipuladas ya mencionadas.

Jos\\u00E9 Miguel Mart\\u00EDnez Gonz\\u00E1lez

2005-01-01

333

Complications of endovascular treatment of cerebral aneurysms  

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The number of neuroendovascular treatments of both ruptured and unruptured aneurysms has increased substantially in the last two decades. Complications of endovascular treatments of cerebral aneurysms are rare but can potentially lead to acute worsening of the neurological status, to new neurological deficits or death. Some of the possible complications, such as vascular access site complications or systemic side effects associated with contrast medium (e.g. contrast medium allergy, contrast induced nephropathy) can also be encountered in diagnostic angiography. The most common complications of endovascular treatment of cerebral aneurysms are related to acute thromboembolic events and perforation of the aneurysm. Overall, the reported rate of thromboembolic complications ranges between 4.7% and 12.5% while the rate of intraprocedural rupture of cerebral aneurysms is about 0.7% in patients with unruptured aneurysms and about 4.1% in patients with previously ruptured aneurysms. Thromboembolic and hemorrhagic complications may occur during different phases of endovascular procedures and are related to different technical, clinical and anatomic reasons. A thorough knowledge of the different aspects of these complications can reduce the risk of their occurrence and minimize their clinical sequelae. A deep understanding of complications and of their management is thus part of the best standard of care.

Orrù, Emanuele, E-mail: surgeon.ema@gmail.com [Neuroradiology Department, Padua University Hospital, Via Giustiniani 2, Padua 35128 (Italy); Roccatagliata, Luca, E-mail: lroccatagliata@neurologia.unige.it [Neuroradiology Department, IRCCS San Martino University Hospital and IST, Largo Rosanna Benzi 10, Genoa 16132 (Italy); Department of Health Sciences (DISSAL), University of Genoa (Italy); Cester, Giacomo, E-mail: giacomo.cester@sanita.padova.it [Neuroradiology Department, Padua University Hospital, Via Giustiniani 2, Padua 35128 (Italy); Causin, Francesco, E-mail: francesco.causin@sanita.padova.it [Neuroradiology Department, Padua University Hospital, Via Giustiniani 2, Padua 35128 (Italy); Castellan, Lucio, E-mail: lucio.castellan@hsanmartino.it [Neuroradiology Department, IRCCS San Martino University Hospital and IST, Largo Rosanna Benzi 10, Genoa 16132 (Italy)

2013-10-01

334

Endovascular treatment of ruptured saccular intracranial aneurysms  

International Nuclear Information System (INIS)

Objective: To discuss the technical points and therapeutic value of endovascular intervention for the treatment of ruptured saccular intracranial aneurysms. Methods: During the period of July 2004-May 2008, a total of 138 patients with DSA-proved saccular intracranial aneurysms were encountered in the Affiliated Huashan Hospital of Fudan University and in the Central Hospital of Shanghai Jing'an District. All the patients had spontaneous subarachnoid hemorrhage and a total of 149 intracranial aneurysms were detected on DSA. Endovascular embolization therapy was carried out in all patients. The mid-term results were analyzed and the technical points were discussed. Results: Of the total 149 saccular intracranial aneurysms, total occlusion was achieved in 128 (86%), subtotal occlusion (> 95%) in 12 (8%), and partial occlusion (< 95%) in 9 (6%), which included 4 wide-necked aneurysms and 5 giant aneurysms with wide-neck. A follow-up observation lasting 6-36 months (mean 16.8 months) with DSA was conducted in 93 patients, the results showed that only 4 cases (4.3%) had a recurrence, nevertheless no rupture of the aneurysms occurred again.Conclusion: The results of mid-term follow-up indicate that endovascular coil embolization is a safe and effective treatment for ruptured saccular intracranial aneurysms. The technical point is to occlude the aneurismal neck and the true-aneurysm cavity completely. (authors)

335

Complications of endovascular treatment of cerebral aneurysms  

International Nuclear Information System (INIS)

The number of neuroendovascular treatments of both ruptured and unruptured aneurysms has increased substantially in the last two decades. Complications of endovascular treatments of cerebral aneurysms are rare but can potentially lead to acute worsening of the neurological status, to new neurological deficits or death. Some of the possible complications, such as vascular access site complications or systemic side effects associated with contrast medium (e.g. contrast medium allergy, contrast induced nephropathy) can also be encountered in diagnostic angiography. The most common complications of endovascular treatment of cerebral aneurysms are related to acute thromboembolic events and perforation of the aneurysm. Overall, the reported rate of thromboembolic complications ranges between 4.7% and 12.5% while the rate of intraprocedural rupture of cerebral aneurysms is about 0.7% in patients with unruptured aneurysms and about 4.1% in patients with previously ruptured aneurysms. Thromboembolic and hemorrhagic complications may occur during different phases of endovascular procedures and are related to different technical, clinical and anatomic reasons. A thorough knowledge of the different aspects of these complications can reduce the risk of their occurrence and minimize their clinical sequelae. A deep understanding of complications and of their management is thus part of the best standard of care

336

Hemorragia subaracnoidea no traumática: diagnóstico, tratamiento y resultados considerando los recursos del hospital público  

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: Spanish Abstract in spanish Objetivo. Evaluamos la evolución de una población de 74 pacientes con diagnóstico de hemorragia subaracnoidea no traumática, en relación con la metodología de trabajo de un hospital público y la influencia de ciertos efectos operativos inherentes al sistema. Método. Los pacientes fueron internados e [...] n la Unidad de Terapia Intensiva (UTI) estudiados mediante tomografía axial computada (TC) y angiografía digital de 4 vasos, analizándose los tiempos de demora en la realización de los mismos. Consideramos la terapéutica al ingreso y el tratamiento quirúrgico (microcirugía o tratamiento endovascular). Evaluamos la morbimortalidad específica en función de la terapéutica implementada y la global de la población estudiada Resultados. De los pacientes sometidos a microcirugía (36) fallecieron 8 (22%) y de los casos que recibieron tratamiento endovascular (12) falleció un caso (8.33%). La mortalidad global de la población estudiada fue de 24 pacientes (32%) Conclusión. Consideramos que el diagnóstico y tratamiento de la HSA no traumática en el hospital público enfrenta dificultades operativas para la adecuada implementación de una atención neuroquirúrgica de excelencia en tiempo oportuno. Abstract in english Objective. We evaluated 74 patients with diagnosisnon traumatic subarachnoid hemorrhage in relation with the working methodology of a public hospital and its influence in certain operative effects inherent to the system. Method. Patients were treated in a neurosurgical intensive care unit, head CT s [...] canning and cerebral angiography were performed; we analyzed the delay in their execution. We considered the initial therapy and the surgical treatment (microsurgery/ endovascular). We evaluated the specific morbimortality in relation to the implemented therapeutics and the global morbi- mortality of the population studied. Results. Of the patients that underwent microsurgical treatment (36) 8 died (22%) and 1 patient (8.33%) died of the 12 patients that underwent endovascular treatment. The overall mortality of the population studied was 24 patients (32%). Conclusion. We consider that the diagnosis and treatment of aneurysmal subarachnoid hemorrhage in a public hospital faces operative difficulties for the proper implementation of neurosurgical treatment of excellence in the appropriate time.

Cynthia, Purves; Jorge, Bolzani; Hugo, Koatz; Pablo, Cartolano; Jorge, Fiol; Salvador, Selles.

2007-03-01

337

Surgeon custom-made iliac branch device to salvage hypogastric artery during endovascular aneurysm repair.  

Science.gov (United States)

Endovascular salvage of the hypogastric artery using iliac branch device (IBD) during endovascular aortic aneurysm repair (EVAR), offers less invasive alternative solution to surgery to prevent pelvic ischemia. We have performed the first Korean surgeon custom-made IBD for this purpose to overcome the limitation of unavailability of the devices in Korea. Four patients with abdominal aortic aneurysm with bilateral common iliac artery aneurysm (CIAA) were treated using custom-made IBDs from October 2013 to December 2013. IBD was created in back table before EVAR operation using TFLE Zenith iliac limb stent graft (Cook Inc.). Three V12 (Atrium, Inc.) one Viabahn (Gore, Inc.) were used for bridging between IBD and target hypogastric artery. With this modification of IBD procedure, exteriorize the guide wire without snare device is possible which offers another benefit in terms of reducing medical costs comparing to commercial IBD. All operations were successful without any device related complications or postoperative endoleaks. During the mean follow up of 3 months, all IBD were patent without clinical complications. Surgeon custom made IBD is feasible and useful to preserve pelvic perfusion especially in the situation of limited commercial IBD availability in many countries. Long-term follow-up is needed to evaluate stent graft patency and IBD-related complications. PMID:25469069

Park, Young Eun; Lee, Jae Hoon; Yun, Woo-Sung; Park, Ki Hyuk

2014-12-01

338

Endovascular treatment of very small intracranial aneurysms  

DEFF Research Database (Denmark)

The endovascular treatment of intracranial aneurysms 3 mm or less is considered controversial. The purpose of this study is to report angiographic and clinical results following coiling of such aneurysms and compare them to those of larger aneurysms (> 3 mm).Between November 1999 and November 2009 endovascular treatment was attempted in 956 consecutive intracranial aneurysms. Of 956 aneurysms, 111 aneurysms were very small aneurysms with a maximal diameter of 3 mm or less. We conducted a retrospective analysis of angiographic and clinical outcome following coiling of very small aneurysms and subsequently comparing it to the results of larger aneurysms.Coiling initially failed in eight aneurysms. In the remaining 103 aneurysms endovascular treatment was accomplished and immediate angiographic results showed complete aneurysm occlusion in 43 aneurysms, nearly complete aneurysm occlusion in 54 aneurysms and less than 90% aneurysm occlusion in six aneurysms. Complications occurred in the treatment of 15 aneurysms, including eight procedural ruptures, six thromboembolic events and one case of early hemorrhage. Compared with larger aneurysms, treatment of very small aneurysms was associated with a higher rate of procedural ruptures (7.2% versus 4.4%) and procedural mortality (4.7% versus 2.7%) but a lower procedural morbidity (1.9% versus 4.0%). However none of these differences reached statistical significance (p = 0.186, p= 0.388, respectively). The retreatment rate was higher for the larger aneurysms (8.2% and 6.3%), but this was not significant either (p= 0. 496). At nine-month follow-up significantly more small aneurysms were found to have a stable occlusion grade compared to large aneurysms.Endovascular treatment of very small aneurysms is feasible with a lower retreatment rate compared to large aneurysms (> 3 mm). However the data also suggest that endovascular treatment of very small aneurysms might be associated with an increased risk of procedural ruptures and mortality. At nine-month follow-up results indicate significantly less compaction in the very small aneurysms.

Iskandar, A; Nepper-Rasmussen, J

2011-01-01

339

Tratamento endovascular de lesões arteriais traumáticas Endovascular management of traumatic arterial injuries  

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Full Text Available Introdução: As lesões arteriais traumáticas ocorrem em menos de 10% de politraumatizados e, nos países desenvolvidos, tem-se observado uma preponderância crescente de traumatismos vasculares iatrogénicos. Recentemente vários autores têm descrito a utilização de técnicas endovasculares com sucesso, pelo menor risco cirúrgico, em lesões de difícil acesso cujo tratamento convencional requer grande exposição cirúrgica, dificuldade técnica e mortalidade ou morbilidade apreciáveis. Os procedimentos endovasculares representam ainda uma alternativa terapêutica com menor mortalidade no tratamento de complicações crónicas de traumatismos vasculares, nomeadamente nos aneurismas pós-traumáticos do istmo aórtico (APTIA. Os autores apresentam uma série de doentes com lesões traumáticas arteriais diversas, em fase aguda ou crónica, tratados por via endovascular. Casos Clínicos: Sete doentes (21-77 anos, foram submetidos a tratamento endovascular de traumatismos vasculares na fase aguda ou crónica. Quatro doentes apresentavam lesões traumáticas agudas: 1 caso de rotura traumática do istmo aórtico (RTIA em politraumatismo por acidente de viação; 1 caso de rotura da artéria subclávia (RAS iatrogénica após tentativa de colocação de catéter de hemodiálise; 1 caso rotura de artéria renal (RAR durante angioplastia/stent por doença renovascular; 1 caso de fístula arterio-venosa (FAV da artéria renal intra-parenquimatosa iatrogénica após tumorectomia laparoscópica. Três doentes com complicações crónicas de traumatismos torácicos apresentavam falsos aneurismas do arco aórtico. Os doentes com roturas arteriais foram submetidos a exclusão endovascular com endoprótese e o doente com FAV renal foi submetido a embolização com coils. Os três doentes portadores de APTIA foram submetidos a: tratamento endovascular de aneurisma da aorta torácica (TEVAR-1; “debranching” com bypass carótido-subclávio e TEVAR-2. Todos os procedimentos foram realizados com sucesso. Não se verificou mortalidade. No doente com RAS houve necessidade de cirurgia de descorticação pulmonar esquerda, por hematoma organizado, e o doente com FAV foi submetido com sucesso a nova embolização com coils por recorrência precoce de hematúria. Conclusão: O tratamento endovascular é, em casos seleccionados, uma alternativa válida e menos invasiva de lesões traumáticas complexas em regiões anatómicas de difícil acesso e morbi-mortalidade cirúrgica elevada.Introduction: Traumatic vascular injuries are present in less than 10% of patients with multi-organ trauma and, in western countries, the incidence of iatrogenic vascular lesions has been increasing. Conventional surgery in the approach of these lesions usually requires extended surgical exposure, presents increased technical challenges and has high morbidity and mortality. Recently, several authors have described the successful management of traumatic injuries with endovascular techniques with diminished surgical risk. Endovascular surgery has also been increasingly applied in management of chronic traumatic injuries like chronic post-traumatic thoracic aneurysms with significant improved outcomes. The authors present clinical cases with several acute and chronic traumatic vascular injuries treated with endovascular techniques, Clinical reports: Seven patients (21-77 years with traumatic vascular injuries were treated. Four patients presented acute injuries: 1 case of traumatic aortic injury in a patient with multi-organ trauma after automobile crash; 1 case of iatrogenic subclavian artery rupture after inadvertent subclavian artery catheterization during attempted venous central access ; 1 case of iatrogenic renal artery rupture during renal angioplasty and stenting; 1 case of iatrogenic intra-renal arterio-venous fistula (AVF after laparoscopic resection of a renal tumour. Three patients presented with chronic post-traumatic thoracic aneurysms. In the patients with arterial rupture endovascular exclusion with stentgrafts was perform

Ruy Fernandes e Fernandes

2011-03-01

340

Vascular Rupture Caused by a Molding Balloon during Endovascular Aneurysm Repair: Case Report  

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Endovascular aneurysm repair (EVAR) has been accepted as an alternative to traditional open surgery in selected patients. Despite the minimally invasiveness of this treatment, several complications may occur during or after EVAR. Complications include endoleak, aortic dissection, distal embolism, or iatrogenic injury to the access artery. However, there are few reports on the vascular rupture caused by a molding balloon during EVAR. We report two cases of infrarenal abdominal aortic aneurysms complicated by procedure-related aortic or iliac artery rupture by the molding balloon during EVAR. In our cases, we observed suddenly abrupt increase of the diameter of the endograft during balloon inflation, because we inflated the balloon rapidly. In conclusion, careful attention must be paid during inflation of the molding balloon to prevent vascular rupture.

Lee, Hee Young; Do, Young Soo; Park, Hong Suk; Park, Kwang Bo [Dept. of Radiology, Samsugn Medical Center, Sungkyunkwan University School of Medicine, Seoul (Korea, Republic of); Kim, Young Wook; Kim, Dong Ik [Dept. of Surgery, Samsugn Medical Center, Sungkyunkwan University School of Medicine, Seoul (Korea, Republic of)

2011-08-15

341

Complex Regional Pain Syndrome Type II Secondary to Endovascular Aneurysm Repair.  

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Complex regional pain syndrome (CRPS) is a chronic pain disorder characterized by severe pain and vasomotor and pseudomotor changes. Endovascular aneurysm repair (EVAR) of abdominal aortic aneurysms is a recent advance in vascular surgery that has allowed repair of AAA while offering reduced intensive care unit and hospital lengths of stay, reduced blood loss, fewer major complications, and more rapid recovery. Pseudoaneurysms are a rare complication of an EVAR procedure that may result in a wide range of complications. The present report examines CRPS type II as a novel consequence of pseudoaneurysm formation from brachial artery access in the EVAR procedure. To our knowledge, this is the first reported case of CRPS type II presentation as sequelae of an EVAR procedure. PMID:25650247

Chen, Hamilton; Tafazoli, Sharwin

2015-01-01

342

Abdominal compartment syndrome  

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The term abdominal compartment syndrome (ACS) describes the clinical manifestations of the pathologic elevation of the intra-abdominal pressure (IAP). When the IAP exceeds 12mm Hg it is referred to as intra-abdominal hypertension (IAH) while ACS generally sets in at an IAP in excess of 20mm Hg. This syndrome is most commonly observed in the setting of server abdominal trauma and in the aftermath of major abdominal operations. ACS affects mainly the respiratory, cardiovascular, renal, gastrointestinal and the central nervous systems. Fundamental to the development of the ACS are the obstruction of the venous return to the heart via the inferior vena cava and the splinting of the diaphragm due to elevated IAP. Preventing ACS by the identification of the patients at a risk and early diagnosis is paramount to its successful management. To this end a high index of suspicion is sine qua non. The management of established ACS requires clinical astuteness and decisiveness with a readily available and generous team support. The purpose of this review is to enhance awareness among clinicians about a subtle condition with a devastating impact on morbidity and mortality if undiagnosed. (author)

343

Endovascular and surgical management of carotid artery restenosis  

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Full Text Available Background. The incidence of recurrent carotid stenosis after primary endarterectomy ranges from 10-34%. We presented our four year experience and comparing reoperation versus endovascular treatment. Methods. In period from 2001 to 2005, 50 patients, 37 men and 13 women, were treated surgically and endovascular due to restenosis. Results. There were no minor or major stroke, death and myocardial infarction periprocedural and in first 30 days in either group. In endovascular group one patients 3,17% had transient ischemic attack and two patients 11,76% in surgical group. One patient died from myocardial infraction in follow up in surgical group. There were no restenosis >50% in endovascular group, two patients have restenosis >50% in surgical group. Conclusions. Endovascular treatment of carotid artery restenosis represents a safe and efficient way of treatment, connected with minor number of serious complications than redo operation.

Radak ?.J.

2007-01-01

344

Abdominal wall endometriosis.  

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Endometriosis of abdominal wall scar following operation on uterus and tubes is extremely rare. The late onset of symptoms after surgery is the usual cause of misdiagnosis. Scar endometriosis is a rare disease which is difficult to diagnose and should always be considered as a differential diagnosis of painful abdominal masses in women. The diagnosis is made only after excision and histopathology of the lesion. Preoperative differentials include hernia, lipoma, suture granuloma or abscess. Hence an awareness of the entity avoids delay in diagnosis, helps clinicians to a more tailored treatment and also avoids unnecessary referrals. We report a case of abdominal endometriosis. The definitive diagnosis of which was established by histopathological studies. PMID:21485605

Upadhyaya, P; Karak, A K; Sinha, A K; Kumar, B; Karki, S; Agarwal, C S

2010-01-01

345

Abdominal ultrasound in AIDS  

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To present the abdominal abnormalities disclosed by ultrasound studies performed in AIDS patients, discussing the importance of these findings in the diagnosis of diseases associated with this syndrome. Over the course of four years, we examined 250 AIDS patients (175 males and 75 females with a mean age of 30 years). We have evaluated the signs that are nonspecific as well as those that are related to AIDS. The nonspecific signs consisted of hepatomegaly (79,2%), fatty infiltration (16%), gallbladder wall thickening (12%), splenomegaly (54,4%), ascites (9.2%), lymph node enlargement 1.5 cm (12.5%), liver nodules (3.6%), visceral microcalcifications (0.8%) and renal masses (0.8%). Ultrasound is useful in the initial study of abdominal pathology associated or not associated with AIDS. In some patients with treatable diseases (tuberculosis, abdominal lymphoma), this techniques was also of value in the assessment of the response to treatment. (Author) 15 refs

346

Endoluminal repair of abdominal aortic aneurysms -- state of the art  

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This paper considers the historical aspects of endovascular aneursym repair; the major findings of our Departments experience over an 8((1)/(2))-year period and reviews recent developments in endovascular prostheses. Analysis of 400 patients undergoing primary repair of abdominal aortic aneurysm between 1992 and 2000 revealed a perioperative mortality rate of 2.7% and primary conversion rate of 5%. With sequential studies it was shown that the outcome was better with bifurcated/aorto uni iliac grafts than tube grafts; better with second generation prostheses than first generation protheses and that survival in consecutive patients treated concurrently by open repair and endoluminal repair was superior in the endoluminal group. Endoluminal AAA repair is at a critical point of its development. It is unquestioned that it can dramatically reduce the need for intensive care and length of hospital stay and more recently it has been reported that survival is improved compared with open repair. The need for lifetime surveillance, the probability of graft failure and need for re-intervention, however, negate some of the advantages. The small incidence of unpredictable rupture following endoluminal AAA repair is a timely reminder of the need for continued careful follow-up

347

Lateral abdominal wall hematoma as a rare complication after carotid artery stenting: a case report  

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Full Text Available Abstract Abdominal wall hematoma is a rare and life-threatening complication after carotid artery stenting (CAS, but it can occur when activated clotting time is prolonged. We report a right lateral abdominal wall hematoma caused by rupture of the superficial circumflex iliac artery after CAS in a 72-year-old man with severe stenosis of the origin of the right internal carotid artery. We performed CAS for the targeted lesion while activated clotting time exceeded 300 seconds. After 2 hours, he complained of right lateral abdominal pain. Abdominal computed tomography revealed an extensive hematoma in the right lateral abdominal wall. Activated clotting time was 180 seconds at this point. Seven hours later, he developed hypotension and hemoglobin level dropped to 11.3 g/dl. Subsequent computed tomography showed enlargement of the hematoma. Emergent selective angiography of the external iliac artery revealed active bleeding from the right superficial circumflex iliac artery. Transcatheter arterial embolization with Gelfoam and microcoils was performed successfully. With more CAS procedures being performed, it is important for endovascular surgeons and radiologists to consider the possibility of abdominal wall hematoma in this situation.

Satomi Jyunichiro

2009-11-01

348

Childhood abdominal cystic lymphangioma  

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Background: Abdominal lymphangioma is a rare benign congenital malformation of the mesenteric and/or retroperitoneal lymphatics. Clinical presentation is variable and may be misleading; therefore, complex imaging studies are necessary in the evaluation of this condition. US and CT have a major role in the correct preoperative diagnosis and provide important information regarding location, size, adjacent organ involvement, and expected complications. Objective: To evaluate the clinical and imaging findings of seven children with proven abdominal cystic lymphangioma. Materials and methods: Clinical and imaging files of seven children with pathologically proven abdominal lymphangioma, from three university hospitals, were retrospectively evaluated. Patient's ages ranged from 1 day to 6 years (mean, 2.2 years). Symptoms and signs included evidence of inflammation, abnormal prenatal US findings, chronic abdominal pain, haemorrhage following trauma, clinical signs of intestinal obstruction, and abdominal distension with lower extremities lymphoedema. Plain films of five patients, US of six patients and CT of five patients were reviewed. Sequential imaging examinations were available in two cases. Results: Abdominal plain films showed displacement of bowel loops by a soft tissue mass in five of six patients, two of them with dilatation of small bowel loops. US revealed an abdominal multiloculated septated cystic mass in five of six cases and a single pelvic cyst in one which changed in appearance over 2 months. Ascites was present in three cases. CT demonstrated a septated cystic mass of variable sizes in all available five cases. Sequential US and CT examinations in two patients showed progressive enlargement of the masses, increase of fluid echogenicity, and thickening of walls or septa in both cases, with multiplication of septa in one case. At surgery, mesenteric lymphangioma was found in five patients and retroperitoneal lymphangioma in the other two. Conclusions: US and CT are highly sensitive in the diagnosis