Relationship Between Preoperative Alcohol Consumption and Postoperative Nausea and Vomiting in Liver Resection: A Propensity Score Matched Analysis in a Single Institute.

BACKGROUND Patients with alcohol drinking habits have less nausea and vomiting during chemotherapy because of cytochrome P450 enzyme induction. However, few studies have examined the effect of alcohol consumption on postoperative nausea and vomiting (PONV). We conducted a study to clarify the relationship between alcohol drinking habits and PONV. METHODS Data of patients undergoing hepatectomy under general anesthesia between 2016 and 2020 were retrospectively collected. Since alcohol drinking habits vary by gender, age, and comorbidities, propensity score matching was performed to adjust patient background before multivariate logistic regression analysis. RESULTS Seventy-eight patients in the alcohol consumption and non-consumption groups were matched by propensity matching. Univariate analysis showed that alcohol consumption (P = 0.04) and male (P ＜ 0.001) were the factors that significantly reduced PONV. Multiple logistic regression analysis including intraoperative factors showed that alcohol consumption (odds ratio, 0.36; 95% confidence interval [CI], 0.15-0.90) and female (odds ratio, 5.34; 95% CI, 2.0-14.2) were associated with PONV as factors affecting PONV. CONCLUSION Patients with no alcohol drinking habits may be at higher risk of PONV.