title: Liver function and encephalopathy after partial vs direct side-to-side portacaval shunt: a prospective randomized clinical trial.
abstract: BACKGROUND
  The aim of this study was to determine, in a prospective randomized clinical trial, whether the partial portacaval shunt offers any advantage in terms of liver function and encephalopathy rate when compared with direct side-to-side direct portacaval shunt.
  
  
  METHODS
  Forty-six "good risk" patients with cirrhosis and with documented variceal hemorrhage were randomly assigned to either a partial shunt procedure (achieved by 10-mm diameter interposition portacaval H-graft) or direct small-diameter side-to-side portacaval anastomosis.
  
  
  RESULTS
  Operative mortality was zero in both groups. During the follow-up period, encephalopathy developed in 3 patients in the partial shunt group and 9 in the direct shunt group (P =.04). Kaplan-Meier analysis demonstrated that encephalopathy-free survival was significantly longer in the partial shunt group (P =.025). Direct shunt patients had significant hepatic functional deterioration postoperatively compared with the partial shunt group.
  
  
  CONCLUSIONS
  The partial portacaval shunt effectively controls variceal hemorrhage. Compared with direct side-to-side portacaval shunt, partial shunt preserves long-term hepatic function and minimizes postoperative encephalopathy. We conclude that the partial portacaval shunt is the preferred approach over direct shunts for patients with cirrhosis and with variceal bleeding.
authors.affiliation: Departments of Surgery and Gastroenterology, Ospedale Mauriziano (Umberto I), Torino, Italy.
authors.forename: L
authors.initials: L
authors.lastname: Capussotti
authors.forename: V
authors.initials: V
authors.lastname: Vergara
authors.forename: R
authors.initials: R
authors.lastname: Polastri
authors.forename: H
authors.initials: H
authors.lastname: Bouzari
authors.forename: G
authors.initials: G
authors.lastname: Galatola
mesh_terms: D000368:Aged; D004932:Esophageal and Gastric Varices / Q000209:etiology / Q000503:physiopathology / Q000601:surgery; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000209:etiology / Q000503:physiopathology / Q000601:surgery; D006501:Hepatic Encephalopathy / Q000209:etiology / Q000517:prevention & control*; D006801:Humans; D008099:Liver / Q000503:physiopathology*; D008103:Liver Cirrhosis / Q000150:complications / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D011167:Portacaval Shunt, Surgical / Q000009:adverse effects / Q000379:methods*; D011183:Postoperative Complications / Q000209:etiology / Q000517:prevention & control; D011446:Prospective Studies; D012008:Recurrence