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Doctoral Thesis
DOI
https://doi.org/10.11606/T.5.2014.tde-26022015-150342
Document
Author
Full name
Rodrigo Martinez de Mello Vianna
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2014
Supervisor
Committee
Albuquerque, Luiz Augusto Carneiro D (President)
Boin, Ilka de Fatima Santana Ferreira
Herman, Paulo
Santos, Vinicius Rocha
Title in Portuguese
Resultados do transplante multivisceral na trombose porto-mesentérica difusa
Keywords in Portuguese
Intestinos/transplante
Procedimentos cirúrgicos do sistema digestório
Transplante de fígado
Transplante multivisceral
Transplantes
Trombose
Abstract in Portuguese
Objetivo: Avaliar o prognóstico clínico do transplante multivisceral (TMV) na vigência de trombose difusa do sistema porto-mesentérico. Introdução. O transplante hepático (TH) na vigência de cirrose e trombose difusa do sistema porto-mesentérico é controverso e muitas vezes contraindicado em muitos centros de transplante hepático. O transplante hepático utilizando técnicas alternativas como a hemitransposição portocava falha na eliminação de complicações provenientes da hipertensão portal. O TMV substitui o fígado e todo o sistema venoso porto-mesentérico. Métodos: Uma base de dados de pacientes submetidos a transplante intestinal foi mantida com análise prospectiva de resultados. O diagnóstico de trombose difusa do sistema porto-mesentérico foi estabelecido através de tomografia abdominal em fases arterial e venosa, ou por ressonância magnética com reconstrução venosa. Resultados: Vinte e cinco pacientes com trombose de porta, estádio IV, foram submetidos ao TMV. Onze pacientes receberam transplante renal concomitante. Rejeição aguda confirmada por biópsia foi notada em cinco pacientes, que foram tratados com sucesso. Com um seguimento médio de 2,8 anos, a sobrevida de enxertos e pacientes foi de 80%, 72% e 72%, respectivamente. Até a presente data, todos os sobreviventes estão com boa função de enxerto e sem nenhum sintoma ou evidência de hipertensão portal. Conclusão: O TMV deve ser considerado como opção para o tratamento de pacientes com trombose portomesentérica difusa. O transplante multivisceral é o único procedimento que reverte completamente a hipertensão portal e a doença de base com uma sobrevida superior ao TH com reconstruções vasculares alternativas
Title in English
Outcomes of multivisceral transplantation in the setting of diffuse thromobisis of the portomesenteric venous
Keywords in English
Digestive system surgical procedures
Intestines/transplant
Liver transplantation
Organ transplantation
Thrombosis
Transplants
Abstract in English
Objective: To evaluate the clinical outcomes of multivisceral transplantation (MVT) in the setting of diffuse thrombosis of the portomesenteric venous system. Background: Liver transplantation (LT) in the face of cirrhosis and diffuse portomesenteric thrombosis (DPMT) is controversial and contraindicated in many transplant centers. LT using alternative techniques such as portocaval hemitransposition fails to eliminate complications of portal hypertension. MVT replaces the liver and the thrombosed portomesenteric system. Methods: A database of intestinal transplant patients was maintained with prospective analysis of outcomes. The diagnosis of diffuse PMT was established with dual-phase abdominal computed tomography or magnetic resonance imaging with venous reconstruction. Results: Twentyfive patients with grade IV DPMT received 25 MVT. Eleven patients underwent simultaneous cadaveric kidney transplantation. Biopsy proven acute cellular rejection was noted in 5 recipients, which was treated successfully. With a median follow-up of 2.8 years, patient and graft survival were 80%, 72%, and 72% at 1, 3, and 5 years, respectively. To date, all survivors have good graft function without any signs of residual/recurrent features of portal hypertension. Conclusions: MVT can be considered as an option for the treatment of patients with diffuse DPMT. MVT is the only procedure that completely reverses portal hypertension and addresses the primary disease, while achieving superior survival results in comparison to the alternative vascular reconstructions
 
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Publishing Date
2015-03-04
 
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