title: Efficacy and safety of antifibrinolytic drugs in liver transplantation: a systematic review and meta-analysis.
abstract: Although several randomized controlled trials (RCTs) have shown the efficacy of antifibrinolytic drugs in liver transplantation, their use remains debated due to concern for thromboembolic complications. None of the reported RCTs has shown a higher incidence of these complications in treated patients; however, none of the individual studies has been large enough to elucidate this issue completely. We therefore performed a systematic review and meta-analysis of efficacy and safety endpoints in all published controlled clinical trials on the use of antifibrinolytic drugs in liver transplantation. Studies were included if antifibrinolytic drugs (epsilon-aminocaproic acid, tranexamic acid (TA) or aprotinin) were compared with each other or with controls/placebo. Intraoperative red blood cell and fresh frozen plasma requirements, the perioperative incidence of hepatic artery thrombosis, venous thromboembolic events and mortality were analyzed. We identified 23 studies with a total of 1407 patients which met the inclusion criteria. Aprotinin and TA both reduced transfusion requirements compared with controls. No increased risk for hepatic artery thrombosis, venous thromboembolic events or perioperative mortality was observed for any of the investigated drugs. This systematic review and meta-analysis does not provide evidence for an increased risk of thromboembolic events associated with antifibrinolytic drugs in liver transplantation.
authors.affiliation: Department of Surgery, Section of Hepatobiliary Surgery and Liver Transplantation, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
authors.forename: I Q
authors.initials: IQ
authors.lastname: Molenaar
authors.forename: N
authors.initials: N
authors.lastname: Warnaar
authors.forename: H
authors.initials: H
authors.lastname: Groen
authors.forename: E M
authors.initials: EM
authors.lastname: Tenvergert
authors.forename: M J H
authors.initials: MJ
authors.lastname: Slooff
authors.forename: R J
authors.initials: RJ
authors.lastname: Porte
mesh_terms: D000328:Adult; D000368:Aged; D015119:Aminocaproic Acid / Q000627:therapeutic use; D000933:Antifibrinolytic Agents / Q000627:therapeutic use*; D007611:Aprotinin / Q000627:therapeutic use; D001803:Blood Transfusion / Q000706:statistics & numerical data; D018849:Controlled Clinical Trials as Topic / Q000706:statistics & numerical data; D005260:Female; D006499:Hepatic Artery; D006801:Humans; D016031:Liver Transplantation / Q000009:adverse effects* / Q000379:methods / Q000401:mortality; D008297:Male; D008875:Middle Aged; D015996:Survival Rate; D013923:Thromboembolism / Q000188:drug therapy / Q000209:etiology; D013927:Thrombosis / Q000188:drug therapy / Q000209:etiology; D014148:Tranexamic Acid / Q000627:therapeutic use; D016896:Treatment Outcome; D020246:Venous Thrombosis / Q000188:drug therapy / Q000209:etiology
chemical_list: D000933:Antifibrinolytic Agents; D014148:Tranexamic Acid; D007611:Aprotinin; D015119:Aminocaproic Acid