Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 104
Filter
1.
Rev. cir. (Impr.) ; 73(2): 173-180, abr. 2021. tab, graf
Article in Spanish | LILACS | ID: biblio-1388811

ABSTRACT

Resumen Objetivo: Evaluar el impacto que tiene el uso de catéteres de hemodiálisis en la permeabilidad de fístulas arteriovenosas. Materiales y Método: Estudio observacional, analítico, tipo cohorte retrospectiva. Se calculó un tamaño muestral de 195 pacientes, seleccionados aleatoriamente a partir del total de pacientes diagnosticados con enfermedad renal crónica (ERC) terminal, a quienes se les realizó su primera fístula arteriovenosa (FAV) entre enero de 2014 y diciembre de 2018. Como variables resultado se consideraron la trombosis de FAV y el tiempo de permeabilidad. Para el análisis inferencial se utilizaron las pruebas de Chi cuadrado; RR (IC 95%); curvas Kaplan-Meier; regresión de Cox; considerando un valor de p significativo < 0,05. Resultados: El 52,3% utilizó catéter de hemodiálisis, de los cuales el 49,5% presentó trombosis de su FAV versus el 17,7% del grupo sin este antecedente (p < 0,001); estimándose en el análisis univariado un riesgo de trombosis 2,7 veces mayor en pacientes con catéter previo a la confección de su FAV (IC 95% 1,7 a 4,4). En el análisis multivariado, se identificó como único factor significativo el antecedente de catéter de hemodiálisis, estimándose que los pacientes usuarios de catéter previo a la confección de su FAV tienen 2,8 veces más riesgo de trombosis en el tiempo que quienes no utilizaron catéter (IC 95% 1,6 a 4,9), quienes además presentaron un tiempo de permeabilidad significativamente menor (p < 0,001) en comparación con pacientes sin antecedente de catéter (28,1 vs 43,9 meses). Conclusión: Identificamos el uso del catéter de hemodiálisis como un factor de riesgo de trombosis de fístulas arteriovenosas, afectando significativamente su permeabilidad en el tiempo.


Objective: To evaluate the effects of hemodialysis catheter on arteriovenous fistula (AVF) permeability. Materials and Method: We conducted a retrospective cohort study, including 195 patients randomly selected from all patients diagnosed with chronic renal failure, who had their first arteriovenous fistula between January 2014 and December 2018. The outcomes were arteriovenous fistula thrombosis and permeability. For data analysis we used Chi-square test; Relative-Risk (CI 95%); Kaplan-Meier analysis and Cox regression; p value less than 0.05 were considered as significant. Results: The 52.3% of the patients used hemodialysis catheter, from this group, the 49.5% had AVF thrombosis versus the 17.7% of the group without history of hemodialysis catheter (p < 0.001), estimating in the univariate analysis a risk of thrombosis 2.7 times higher in patients with catheter before the creation of their AVF (CI 95% 1.7 a 4.4), as well as, in the multivariate analysis the risk of AVF thrombosis was 2.8 times higher in this group of patients, being identified the history of hemodialysis catheter as the only significative risk factor for thrombosis. Additionally, the AVF permeability time in this group was significantly less (p < 0.001) than patients without history of hemodialysis catheter (28.1 vs 43.9 months). Conclusion: We identified the hemodialysis catheter as a risk factor of arteriovenous fistula thrombosis, decreasing significantly its permeability time.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Aged, 80 and over , Arteriovenous Shunt, Surgical/adverse effects , Arteriovenous Fistula/etiology , Catheters/adverse effects , Thrombosis/etiology , Arteriovenous Fistula/diagnosis , Perioperative Period
2.
Rev. cuba. angiol. cir. vasc ; 18(2): 192-201, jul.-dic. 2017.
Article in Spanish | LILACS, CUMED | ID: biblio-844818

ABSTRACT

Introducción: La trombosis constituye la principal causa de disfunción y pérdida de las fístulas arterio-venosas para hemodiálisis. Objetivo: actualizar los aspectos relacionados con los principales tratamientos de las fístulas arterio-venosas trombosadas. Fuente de los datos: Se realizó la búsqueda de artículos sobre el tema en la base de dato Medline, artículos publicados en páginas web y revistas líderes en la publicación de estudios sobre fístulas arterio-venosas para hemodiálisis. Síntesis de los datos: La trombosis es la complicación más frecuente de las fístulas arterio-venosas, su principal causa lo constituyen los errores técnicos en la trombosis precoz y las estenosis en las tardías. Conclusiones: La repermeabilización precoz de las fístulas arterio-venosas y tratar las estenosis en el mismo acto quirúrgico, es lo que se recomienda. Para tales fines se cuenta con las técnicas quirúrgicas identificadas como el gold standard y las endovasculares, con resultados alentadores(AU)


Introduction: Thrombosis is the most frequent cause of dysfunction and loss of hemodyalisis arteriovenous fistula. Objective: To update knowledge on the epidemiology, the characteristics and the main treatments of the thrombosed hemodyalisis arteriovenous fistulae. Data source: A literature research about the topic was made in Medline, in articles published in different web pages and in leading journals in the publication of studies about hemodialysis arteriovenous fistula. Data synthesis: Thrombosis is the most frequent complication of the arteriovenous fistula, being the technical errors the main cause of premature thrombosis and the stenosis in the late thrombosis. Conclusions: It is recommended to use early repermeabilization of the arteriovenuos fistulae and to treat stenosis in the same surgical act; for that purpose the surgical treatment identified as the "standard gold" and the endovascular technique achieve encouraging results(AU)


Subject(s)
Humans , Arteriovenous Fistula/surgery , Arteriovenous Fistula/complications , Arteriovenous Fistula/diagnosis , Renal Dialysis/methods
3.
Rev. chil. radiol ; 23(2): 77-79, 2017. ilus
Article in Spanish | LILACS | ID: biblio-900109

ABSTRACT

Femoral artery pseudoaneurysm associated with arteriovenous fistula is a complication of endovascular interventional procedures. However, no cases have been described in which both lesions occur as the result of trauma surgery and specifically that they are side effects to the placement of a gamma nail in the femur with a distal locking screw. We describe the case of a patient who presented femoral artery pseudoaneurysm concomitant with arteriovenous fistula, in which there were no suspicious clinical signs. The diagnosis was established using computed tomography, confirmed by arteriography and treated with the placement of metallic coils.


El pseudoaneurisma de arteria femoral asociado a fístula arteriovenosa es una complicación de los procedimientos intervencionistas endovasculares. Sin embargo, no se han descrito casos en los que ambas lesiones se produzcan como consecuencia de cirugía traumatológica y, en concreto, que sean secundarias a la colocación de clavo gamma en fémur con tornillo de bloqueo distal. Se describe el caso de una paciente que presentó pseudoaneurisma de arteria femoral concomitante con fístula arteriovenosa, en la que no existieron signos clínicos de sospecha. El diagnóstico se estableció mediante tomografía computarizada, se confirmó con arteriografía y se trató mediante la colocación de coils metálicos.


Subject(s)
Humans , Female , Aged, 80 and over , Radiography , Aneurysm, False/diagnostic imaging , Tomography, X-Ray Computed , Arteriovenous Fistula/diagnosis , Arteriovenous Fistula/diagnostic imaging
4.
J. vasc. bras ; 14(3): 217-223, July-Sep. 2015. tab, graf
Article in Portuguese | LILACS | ID: lil-763082

ABSTRACT

A incapacidade das fístulas arteriovenosas (FAVs) atenderem aos quesitos mínimos para realização da hemodiálise (HD) corresponde a uma das maiores causas de morbidade nos pacientes em terapia renal substitutiva. Identificar os fatores de risco associados com a falência do acesso vascular é fundamental para o manejo e sucesso da terapia hemodialítica.ObjetivoComparar o tempo médio de patência e a sobrevida das fístulas arteriovenosas realizadas nos pacientes portadores de diabetes mellitus com pacientes não portadores de diabetes mellitus (DM) em HD.MétodosTrata-se de um estudo retrospectivo observacional, no qual foram observados os prontuários médicos de todos os pacientes em HD no Hospital Santa Casa de Misericórdia de Ponta Grossa, no período de fevereiro de 2014. Foram analisados dados clínicos referentes à confecção, manutenção e utilização das FAVs como adjuvante na terapia dialítica, comparando o tempo médio de patência das fístulas em uso para HD, bem como a sobrevida das FAVs ocluídas. Os pacientes selecionados foram divididos em dois grupos para comparação, conforme a presença ou ausência de DM.ResultadosOs indivíduos do Grupo DM apresentaram maior média de idade (59,97 ± 10,12), menor tempo de acompanhamento no serviço de hemodiálise (25,42 ± 21,03 meses), menor tempo médio até a oclusão da fístula arteriovenosa (9,03 ± 11,60 meses) e menor média de sobrevida dos acessos vasculares em 24 meses (50,25%).ConclusõesO estudo concluiu que para os pacientes diabéticos houve um menor tempo médio da patência das FAVs e menor taxa de sobrevida dos acessos em 24 meses.


Failure of arteriovenous fistulas (AVFs) to meet the minimum requirements for hemodialysis (HD) is the greatest cause of morbidity in patients on renal replacement therapy. Identifying risk factors associated with failure of vascular access is crucial to management and success of hemodialysis treatment.ObjectiveTo compare mean duration of patency and survival of arteriovenous fistulas created in HD patients with and without diabetes mellitus (DM).MethodsThis was a retrospective observational study of the medical records for all patients on HD at the Hospital Santa Casa de Misericórdia de Ponta Grossa (Brazil) in February 2014. We analyzed clinical data relating to creation, maintenance and use of AVF for dialysis, comparing mean duration of patency of fistulas currently in use for HD and analyzing survival of previously occluded AVFs. Patient data was allocated to one of two groups for analysis, according to presence or absence of DM.ResultsIndividuals in the DM group had higher mean age (59.97 ± 10.12), shorter time on hemodialysis treatment (25.42 ± 3.21 months), lower mean time before occlusion of arteriovenous fistulas (3.09 ± 11.60 months) and a lower mean rate survival of vascular access to 24 months (50.25%).ConclusionsThis study concluded that diabetic patients had shorter mean duration of AVF patency and lower rate of access survival to 24 months.


Subject(s)
Humans , Diabetes Mellitus/physiopathology , Arteriovenous Fistula/diagnosis , Medical Records , Renal Dialysis , Retrospective Studies , Time Factors
5.
J. vasc. bras ; 14(2): 182-185, Apr.-June 2015. ilus
Article in Portuguese | LILACS | ID: lil-756474

ABSTRACT

As complicações locais de uma lesão arterial penetrante incluem hematoma, pseudoaneurisma e formação de fístula arteriovenosa. A artéria femoral profunda, por sua localização anatômica, é sede infrequente de lesões traumáticas. Relatamos um caso de paciente jovem, vítima de agressão por arma branca em face posterior de coxa, em que foi diagnosticada, tardiamente, lesão de ramo descendente da artéria femoral profunda, sendo então tratada com técnica endovascular. A revisão de literatura corrobora a raridade do caso, sendo a maioria dos casos de lesão traumática de artéria femoral profunda relatada como decorrente de complicação de procedimentos ortopédicos ou fraturas envolvendo o fêmur proximal.


The local complications of penetrating injuries involving arteries include hematoma, pseudoaneurysm and arteriovenous fistulas. Traumatic injuries to the deep femoral artery are uncommon because of its anatomic location. We report the case of a young male patient who was victim of a stab wound to the posterior thigh who was later diagnosed with an injury to the descending branch of the deep femoral artery and treated using endovascular techniques. A review of the literature confirmed the rarity of the case, since the majority of cases of traumatic injuries to the deep femoral artery that have been reported were due to complications during orthopedic procedures or fractures involving the proximal femur.


Subject(s)
Humans , Male , Young Adult , Embolization, Therapeutic/methods , Femoral Artery , Aneurysm, False/diagnosis , Aneurysm, False/therapy , Wounds, Penetrating/complications , Wounds, Penetrating/therapy , Arteriovenous Fistula/diagnosis , Arteriovenous Fistula/therapy , Angiography/methods , Femur/injuries , Hematoma , Endovascular Procedures/methods
6.
Rev. bras. neurol ; 51(1): 6-11, jan.-mar. 2015. ilus
Article in English | LILACS | ID: lil-749259

ABSTRACT

As fístulas arteriovenosas (FAVs) e os pseudoaneurismas traumáticos extracranianos são malformações incomuns e, em sua maioria, estão associadas a traumatismo craniano fechado com lesão contusa de forte intensidade. O diagnóstico em geral é clínico, porém o exame de escolha para o diagnóstico definitivo é a angiografia. Nos casos em que a lesão é pequena, é possível abordá-la com embolização via endovascular com sucesso. A excisão cirúrgica, no entanto, ainda é o método de escolha para o tratamento. É relatado um caso de um paciente do sexo masculino, com 9 anos de idade, diagnosticado com FAV, acometendo o ramo frontal da artéria temporal superficial, secundária a trauma craniano contundente ocorrido três anos antes do diagnóstico.


The arteriovenous fistulae (AVFs) and the extracranial traumatic pseudoaneurysms are uncommon malformations and in the majority of the cases are associated to closed head trauma with high intensity blunt lesion. The diagnosis is generally clinical, though the exam of choice for definitive diagnosis is an angiography. In minor lesion cases it's possible to successfully approach it with endovas-cular embolization. The surgical excision though, is the method of choice for the treatment. Here is reported a case of a 9-year-old male patient, diagnosed with AVF involving the frontal branch of the superficial temporal artery, secondary to blunt head trauma occurred three years before diagnosis.


Subject(s)
Humans , Male , Child , Arteriovenous Fistula/surgery , Arteriovenous Fistula/diagnosis , Arteriovenous Fistula/etiology , Aneurysm, False/surgery , Angiography , Tomography, X-Ray Computed/statistics & numerical data , Head Injuries, Closed/complications
8.
J. vasc. bras ; 13(1): 48-52, Jan-Mar/2014. graf
Article in English | LILACS | ID: lil-709797

ABSTRACT

Arteriovenous fistulae (AVFs) are anomalous communications between an artery and a vein, bypassing the capillary network. They can be subdivided on the basis of etiology into congenital and acquired fistulae. The latter may be caused by closed or penetrating traumas, or may be iatrogenic injuries. We report on a case of a young adult female gunshot wound victim treated with emergency laparotomy who developed asymmetrical edema of the lower limbs during the late postoperative period. Imaging exams showed the presence of a left internal iliac AVF, treated using endovascular surgery with placement of a covered stent, resulting in total occlusion of arteriovenous communication.


As fístulas arteriovenosas (FAVs) são comunicações anômalas entre uma artéria e uma veia, sem envolvimento capilar. Segundo sua etiologia, podem ser divididas em congênitas e adquiridas, resultantes de traumas fechados ou penetrantes, e de lesões iatrogênicas. Relatamos o caso de mulher jovem, vítima de ferimento por arma de fogo, submetida à laparotomia de urgência, que evoluiu no pós-operatório tardio com edema assimétrico de membros inferiores. Os exames de imagem demonstraram a presença de fístula arteriovenosa ilíaca interna esquerda, tratada através de cirurgia endovascular com stent revestido, determinando a total oclusão da comunicação arterial e venosa.


Subject(s)
Humans , Female , Adult , Iliac Artery/injuries , Wounds, Gunshot/therapy , Arteriovenous Fistula/diagnosis , Endovascular Procedures/methods , Drug-Eluting Stents/adverse effects , Angiography/adverse effects , Intensive Care Units , Time Factors , Tomography/methods
10.
The Korean Journal of Gastroenterology ; : 296-300, 2013.
Article in Korean | WPRIM | ID: wpr-171342

ABSTRACT

Inferior mesenteric arteriovenous fistula is rare and may be congenital or acquired. Affected patients present with abdominal pain, mass, or manifestations of portal hypertension and bowel ischemia. Until now, inferior mesenteric arteriovenous fistula due to trauma has not been reported. Herein, we report a case of a 53-year-old woman who had inferior mesenteric arteriovenous fistula considered to have originated from remote blunt trauma that was successfully treated by surgical resection of only the arteriovenous fistula without colectomy. To our knowledge, this is the first case of traumatic inferior mesenteric arteriovenous fistula.


Subject(s)
Female , Humans , Middle Aged , Arteriovenous Fistula/diagnosis , Colonoscopy , Mesenteric Artery, Inferior/diagnostic imaging , Tomography, X-Ray Computed , Treatment Outcome
11.
Korean Journal of Radiology ; : 497-500, 2013.
Article in English | WPRIM | ID: wpr-208256

ABSTRACT

This report concerns a 4-month-old infant with progressive prominent and redness of his left eye since birth. This report concerns a 4-month-old infant with progressive prominent redness of his left eye since birth. Angiography revealed a congenital pial arteriovenous fistula between the temporal branch of the left posterior cerebral artery and left cavernous sinus through the sphenoparietal sinus, a condition not reported in the literature. The fistula was successfully occluded with two micro-coils by vertebrobasilar approach.


Subject(s)
Humans , Infant , Male , Arteriovenous Fistula/diagnosis , Cavernous Sinus/diagnostic imaging , Embolization, Therapeutic/methods , Intracranial Arteriovenous Malformations/diagnosis , Magnetic Resonance Imaging , Posterior Cerebral Artery , Temporal Lobe/blood supply
12.
West Indian med. j ; 61(9): 937-940, Dec. 2012. ilus
Article in English | LILACS | ID: lil-694371

ABSTRACT

Aortic dissection and rupture occur in 20-40% of patients with Marfan's syndrome. This occurs predominantly in the third and fourth decade of life, contributing to the increased morbidity and mortality of this specific group of patients. This is the first known documented case report of pre-pubertal left coronary sinus rupture with left coronary artery aneurysms with fistulous communication to both the superior vena cava and right superior pulmonary vein, presenting with a continuous murmur.


La disección y ruptura aórticas ocurren en 20-40% de los pacientes con el síndrome de Marfan. Esto ocurre predominantemente en la tercera y cuarta décadas de la vida, contribuyendo al aumento de la morbilidad y la mortalidad de este grupo específico de pacientes. Éste es el primer reporte de un caso documentado conocido de ruptura prepubertal del seno coronario izquierdo con aneurisma de la arteria coronaria izquierda, y comunicación fistulosa tanto con la vena cava superior como con la vena pulmonar superior derecha, acompañada de un soplo continuo.


Subject(s)
Adolescent , Child , Female , Humans , Pregnancy , Aneurysm/diagnosis , Aortic Rupture/diagnosis , Arteriovenous Fistula/diagnosis , Coronary Aneurysm/diagnosis , Coronary Artery Disease/diagnosis , Marfan Syndrome/diagnosis , Pregnancy Complications, Cardiovascular/diagnosis , Pulmonary Veins , Sinus of Valsalva , Vena Cava, Superior , Abortion, Induced , Coronary Angiography , Echocardiography , Follow-Up Studies , Image Interpretation, Computer-Assisted , Imaging, Three-Dimensional , Jamaica , Multidetector Computed Tomography
13.
Mediciego ; 18(supl. 2)nov. 2012. ilus
Article in Spanish | LILACS | ID: lil-710923

ABSTRACT

La presencia de sintomatología local originada por fístulas arteriovenosas funcionantes en enfermos renales trasplantados es un motivo de consulta al angiólogo y cirujano vascular relativamente frecuente. Dolor o disestesias secundarios a un desarrollo excesivo de la rama venosa de la fístula son, junto al temor al sangrado, los síntomas referidos por los pacientes. Sin embargo, son raros los casos en los que la sintomatología es debida a un aneurisma anastomótico o perianastomótico. Se presenta el caso de un paciente sometido a trasplante renal 5 años atrás que acudía por una tumoración pulsátil situada en la región radial del antebrazo izquierdo, en la zona en que se había realizado una fístula arteriovenosa para diálisis. La exploración clínica y el estudio hemodinámico con eco-Doppler a color demostraron la permeabilidad de la fístula y la existencia de un aneurisma postanastomótico. Se procedió al tratamiento quirúrgico, se eliminó el aneurisma y se tomó la decisión de reconstruir la rama venosa arterializada implicada para mantener permeable el angioacceso por si fuera necesario utilizar en el futuro. Los resultados fueron una revascularización completa del acceso vascular permanente y la desaparición de los síntomas ocasionados por la expansión local del aneurisma.


The presence of local symptomatology originated by funtional arteriovenous fistula in transplanted renal patients, it is a reason for consultation to angiologist and relatively frequent vascular surgeon. Secondary pain or dysesthesias to an excessive development of the fistula venous branch are the symptoms referred by patients. Nevertheless, is not frequent the cases in which the symptoms are due to an anastomotic or perianastomotic aneurysm. It appears a case of a patient submissive to a renal transplant 5 years ago that arrived with a pulsating mass located in the radial region of the left forearm, in the zone in which an arteriovenous fistula for dialysis had been carried out. The clinical exploration and the hemodinamic study with color Doppler ultrasonography demonstrated the permeability of the fistula and the existence of a postanastomotic aneurysm. The surgical treatment was carried out, the aneurysm was eliminated and it was taken the decision of reconstructing the arterialized venus branch implied to maintain permeable the angioacces in case it will be necessary to use in the future. The results were a complete revascularization of the permanent vascular access and the disappearance of the symptoms caused by the local expansion of the aneurysm.


Subject(s)
Humans , Male , Aneurysm/surgery , Arteriovenous Fistula/surgery , Arteriovenous Fistula/diagnosis , Case Reports
14.
Rev. chil. neurocir ; 38(1): 43-46, jun. 2012. ilus
Article in Spanish | LILACS | ID: lil-716513

ABSTRACT

La arteria temporal superficial es particularmente vulnerable al trauma debido a su largo trayecto en el cuero cabelludo y relativa vulnerabilidad sin embargo las fístulas arteriovenosas del cuero cabelludo son una patología infrecuente. Presentamos un caso de una paciente femenina quien 2 años posterior a un trauma lacerante del cuero cabelludo presenta una fístula arteriovenosa traumática de la arteria temporal superficial, tratada de manera exitosa mediante la extirpación quirúrgica, se realiza una revisión de la literatura con respecto a la etiología, manifestaciones clínicas, patogenia, diagnóstico y su tratamiento.


The superficial temporal artery is particularly vulnerable to trauma because of its long journey in the scalp and relative vulnerability butth escalp arteriovenous fistulas arean uncommon finding. We report a case of a female patient who 2 years after a shearing trauma of the scalp has a superficial temporal artery (STA) traumatic arteriovenous fistula (TAVF), treated successfully by surgical removal. We review the literature regarding the etiology, clinical manifestations, pathogenesis, diagnosis and treatment.


Subject(s)
Humans , Female , Young Adult , Temporal Arteries/injuries , Scalp/injuries , Arteriovenous Fistula/surgery , Arteriovenous Fistula/diagnosis , Arteriovenous Fistula/epidemiology , Arteriovenous Fistula/etiology , Diagnostic Imaging
15.
Gastroenterol. latinoam ; 23(1): 12-16, ene.-mar.2012. ilus
Article in Spanish | LILACS | ID: lil-661627

ABSTRACT

Portal hypertension (PH) is defined as pathological increase of hydrostatic pressure in the portal venous system, usually related to liver cirrhosis. Among the uncommon causes of PH is the arteriovenous intra or extrahepatic fistula (AVF) of traumatic, iatrogenic or congenital origin. Clinical history and ultrasound findings of AVF are very important for the diagnosis. From a therapeutic point of view, there are three alternatives: clinical/imaging follow-up, surgical repair and transcutaneous catheter embolization. A report of a clinical case and a review of the literature are presented. Patient with portal hypertension as a result of intra hepatic AVF, successfully treated by transcutaneous catheter embolization. A 54 year-old female patient, and cholecystectomized and with history of breast cancer, presented altered liver function tests several months after gallbladder surgery. Once biliary disease was ruled out, liver biopsy was performed, which was compatible with autoimmune hepatitis. During follow-up, intrahepatic AVF was observed by means of ultrasound. Underlying disease was successfully managed with Prednisone and Azathioprine. Nine years later, she experienced an episode of confusion and disorientation compatible with hepatic encephalopathy (HE) and esophageal varices diagnosed by upper endoscopy. Laboratory tests and imaging did not show progression baseline liver disease. Angiographic procedures confirmed an intra hepatic AVF and selective embolization was carried out. There was clinical remission of HE and esophageal varices. We concluded, that transcutaneous catheter embolization is a valid alternative for the treatment of intra hepatic AVF, which accounted for the successful result for this particular patient.


La hipertensión portal (HP) se define como el aumento patológico de la presión hidrostática en el sistema venoso portal, habitualmente relacionada con cirrosis hepática. Entre las causas infrecuentes de HP está la fístula arterio-venosa (FAV) intra o extrahepática de origen traumáticas, iatrogénicas o congénitas entre otras. En el diagnóstico son importantes los antecedentes clínicos y hallazgos ecográficos que demuestran FAV. Desde el punto de vista terapéutico, existen tres alternativas: seguimiento clínico y de imágenes, reparación quirúrgica y embolización con catéter transcutáneo. Se presenta caso clínico de paciente con (HP) a consecuencia de una FAV intrahepática, tratada satisfactoriamente mediante embolización con catéter transcutáneo y revisión de la literatura pertinente. Se trata de una paciente de 54 años con antecedentes de cáncer mamario y colecistectomía en quien se constatan alteraciones de pruebas hepáticas varios meses con posterioridad a cirugía vesicular. Una vez descartada patología biliar, se realizó biopsia hepática la que fue compatible con hepatitis autoinmune. Durante el seguimiento se pesquisó FAV intrahepática como hallazgo ecográfi co. Su enfermedad de base se trató satisfactoriamente con Prednisona y Azatioprina. Nueve años más tarde, consulta por episodio de confusión y desorientación compatible con encefalopatía hepática (EH) y presencia de várices esofágicas a la endoscopia. Tanto el laboratorio como imágenes no mostraron progresión de enfermedad hepática de base. Es sometida a procedimiento angiográfico, que confirmó FAV intrahepática, procediendo a embolización selectiva. Hubo remisión del cuadro clínico de EH y regresión de las várices esofágicas. Se concluye que la embolización con catéter transcutáneo, es una alternativa válida en el tratamiento de FAV intrahepáticas, terapia que constituyó la solución definitiva del cuadro clínico reportado.


Subject(s)
Humans , Female , Middle Aged , Embolization, Therapeutic/methods , Arteriovenous Fistula/diagnosis , Arteriovenous Fistula/therapy , Hypertension, Portal/etiology , Arteriovenous Fistula/complications , Hepatitis, Autoimmune , Hypertension, Portal/therapy
16.
Arq. bras. neurocir ; 30(4)dez. 2011. ilus, tab
Article in Portuguese | LILACS | ID: lil-614351

ABSTRACT

Spinal intradural arteriovenous fistulas (AVFs) are a rare type of neurovascular malformation. Many a time hemodynamic disturbs associated to these entities can cause edema with subsequent myelopathy. On MRI study, this edema can mimic an intramedullary tumor. We report a rare case of spinal intradural AVFs mimicking an intramedullary tumor, which also were surprisingly associated with a giant intracranial aneurysm. We highlight in detail the MRI findings in intramedullary lesions, and also emphasize that these entities requires as careful differential diagnosis as supplementary investigation of the neuroaxis looking for other simultaneous neurovascular pathologies.


Fístulas arteriovenosas espinhais intradurais são um tipo raro de malformação neurovascular. Muitas vezes, distúrbios hemodinâmicos associados a essa entidade podem causar edema com subsequente mielopatia. Em estudos de ressonância magnética, esse edema pode mimetizar um tumor intramedular. Relata-se um caso raro de fistula arteriovenosa espinhal intradural mimetizando um tumor intramedular, que também estava associado a um aneurisma cerebral gigante. Destacam-se em detalhes os achados de RM nas lesões intramedulares, assim como se enfatiza que essas entidades requerem tanto um diagnóstico diferencial criterioso quanto uma investigação complementar do neuroeixo procurando por outras patologias neurovasculares associadas.


Subject(s)
Humans , Female , Middle Aged , Intracranial Aneurysm/complications , Arteriovenous Fistula/diagnosis , Spinal Cord Neoplasms/complications , Spine/pathology , Spinal Cord/pathology
20.
J. vasc. bras ; 10(2): 105-109, jun. 2011. ilus, tab
Article in Portuguese | LILACS | ID: lil-596996

ABSTRACT

CONTEXTO: A insuficiência renal crônica é uma doença de alta prevalência e morbidade, o que determina queda da qualidade de vida. Pacientes em hemodiálise necessitam de um acesso vascular que permita a conexão da circulação do paciente ao circuito externo de hemodiálise. Dentre os acessos disponíveis, as fístulas arteriovenosas (FAV) são as que mais se aproximam do acesso ideal. OBJETIVO: Avaliar a perviedade precoce das FAV, identificando os fatores relacionados ao insucesso destas. MÉTODOS: Foram acompanhados todos os pacientes submetidos à confecção das FAV no Hospital do Servidor Público Municipal de São Paulo, no período de agosto de 2008 a janeiro de 2009, avaliando-se a perviedade destas no 1º, 10º e 30º pós-operatório. Foram realizadas 31 FAV no período, apresentando-se média de idade de 63,06 anos, sendo 18 pacientes do sexo masculino e 13 do feminino. RESULTADOS: Vinte e seis FAV foram distais, todas radiocefálicas; quatro foram proximais, das quais duas braquiocefálicas e duas braquiobasílicas superficializadas; uma FAV confeccionada com alça de politetrafluoretileno (PTFE) fêmoro-femoral esquerda. A taxa de perviedade no primeiro mês foi de 71 por cento dos casos. O uso de cateteres venosos centrais apresentou-se como fator de risco para oclusão da FAV (p=0,01). As FAV continuam sendo o acesso vascular para hemodiálise mais aceito e mais seguro. A indicação precoce para confecção das FAV é de fundamental importância, evitando-se, assim, o uso de cateteres e suas complicações. CONCLUSÕES: A perviedade precoce encontrada neste estudo é semelhante à da literatura, e o uso prévio de cateteres é o fator de risco mais significativo para oclusão precoce desta.


BACKGROUND: Chronic renal failure is a disease of high prevalence and high morbidity, which impairs the patients' quality of life. Patients on hemodialysis need a vascular access for connection with the hemodialysis equipment. Arteriovenous fistulas (AVF) are the best option for this purpose. OBJECTIVE: To evaluate the early patency of AVFs and to identify the causes of their failure. METHODS: All patients AVF underwent operations for dialysis from August, 2008 to January, 2009. The AVF patency was evaluated on the 1st, 10th and 30th postoperative days. Thirty-one operations for AVF were performed in our hospital in the period; 18 patients were males and the mean age was 63.03 years. RESULTS: Twenty-six AVF were distal, all radial-cephalic; four were proximal, out of which two were brachiocephalic and two were brachiobasilic; one AVF was a femoral-femoral loop PTFE graft. The patency rate in the first month was of 71 percent. The use of central venous catheters was a risk factor for AVF occlusion (p=0.01). AVF remains the most accepted and safe vascular access. Early performance of the AVF is very important to avoid the complications resulting from long-term use of central venous catheters. CONCLUSIONS: Data regarding early patency found in this study were similar to those found in literature, and the use of central venous catheters before performing AVF is an important risk factor for occlusion.


Subject(s)
Humans , Male , Female , Aged , Renal Dialysis/methods , Arteriovenous Fistula/diagnosis , Renal Insufficiency, Chronic/diagnosis , Quality of Life/psychology , Catheterization/nursing , Vascular Patency , Prevalence
SELECTION OF CITATIONS
SEARCH DETAIL