Effect of N-acetylcysteine on liver recovery after resection: A randomized clinical trial

Background and ObjectivesLiver failure following hepatic resection is a multifactorial complication. In experimental studies, infusion of N-acetylcysteine (NAC) can minimize hepatic parenchymal injury. MethodsPatients undergoing liver resection were randomized to postoperative care with or without NAC. No blinding was performed. Overall complication rate was the primary outcome; liver failure, length of stay, and mortality were secondary outcomes. Due to safety concerns, a premature multivariate analysis was performed and included within the model randomization to NAC, preoperative ASA, extent of resection, and intraoperative vascular occlusion as factors. ResultsTwo hundred and six patients were randomized (110 to conventional therapy; 96 to NAC). No significant differences were noted in overall complications (32.7% and 45.7%, P=0.06) or hepatic failure (3.6% and 5.4%, P=0.537) between treatment groups. There was significantly more delirium within the NAC group (2.7% and 9.8%, P<0.05) that caused early trial termination. In multivariate analysis, only randomization to NAC (OR=2.21, 95%CI=1.16-4.19) and extensive resections (OR=2.28, 95%CI=1.22-4.29) were predictive of postoperative complications. ConclusionsPatients randomized to postoperative NAC received no benefit. There was a trend toward a higher rate of overall complications and a significantly higher rate of delirium in the NAC group. J. Surg. Oncol. 2016;114:446-450. (c) 2016 Wiley Periodicals, Inc.