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Medical Science Monitor Basic Research


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Intraoperative Surgical Portosystemic Shunt in Liver Transplantation: Systematic Review and Meta-Analysis

Lucas Souto Nacif, Leonardo Yuri Zanini, Vinicius Farina Sartori, Vera Kim, Vinicius Rocha-Santos, Wellington Andraus, Luiz Carneiro D'Albuquerque

(Liver and Gastrointestinal Transplant Division, Department of Gastroenterology, University of São Paulo School of Medicine, São Paulo, SP, Brazil)

Ann Transplant 2018; 23:721-732

DOI: 10.12659/AOT.911435

BACKGROUND: Expanded clinical and surgical techniques in liver transplantation can markedly improve patient and graft survival. The main purpose of this study was to evaluate the efficacy of intraoperative portocaval shunts in liver transplantation.
MATERIAL AND METHODS: Searches were conducted in Cochrane, MEDLINE, and EMBASE databases, and updated in January 2018. The following specific outcomes of interest were defined and evaluated separated using 2 different reviews and meta-analyses for 1) hemi-portocaval shunt (HPCS) and 2) temporary portocaval shunt (TPCS). Comparative studies were analyzed separately for both surgical portocaval shunt modalities.
RESULTS: Only 1 well-designed randomized controlled trial was found. Most studies were retrospective or prospective. Initially, we found 1479 articles. Of those selected, 853 were from PubMed/MEDLINE, 32 were from Cochrane and 594 were from EMBASE. Our meta-analysis included a total of 3232 patients for all the included studies. Results found that 41 patients with HPCS experienced increased 1-year patient survival (OR 16.33; P=0.02) and increased 1-year graft survival (OR 17.67; P=0.01). The TPCS analysis with 1633 patients found patients had significantly shorter intensive care unit length of stay (days) (P=0.006) and hospital length of stay (P=0.02) and had decreased primary nonfunction (PNF) (OR 0.30, P=0.02) and mortality rates (OR 0.52, P=0.01).
CONCLUSIONS: Intraoperative surgical portosystemic shunt in relation to liver transplantation with TPCS was able to prevent PNF, decrease hospital length of stay and unit care length of stay. Furthermore, in analyzing data for patients with HPCS, we observed increases in the 1-year graft and patient survival rates. More prospective randomized trials are needed to arrive at a more precise conclusion.

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