• Anne C Fernandez, Kipling M Bohnert, Mark C Bicket, Wenjing Weng, Kushal Singh, and Michael Englesbe.
• Department of Psychiatry, Addiction Center, University of Michigan, Ann Arbor, MI.
• Ann. Surg. 2023 Aug 1; 278 (2): 201207201-207.

ObjectiveTo assess associations between co-occurring preoperative smoking and risky alcohol use on the likelihood of adverse surgical outcomes.BackgroundRisky alcohol use and smoking are the known surgical risk factors with a high co-occurrence and additive adverse effects on multiple organ systems that impact surgical health, yet no research has evaluated the impact of co-occurrence on surgical outcomes.MethodsThis investigation analyzed 200,816 patients from the Michigan Surgical Quality Collaborative database between July 1, 2012, to December 31, 2018. Patients were classified based on past year risky alcohol use (>2 drink/day) and cigarette smoking into 4 groups: (1) risky alcohol and smoking, (2) risky alcohol only, (3) smoking only, and (4) no risky alcohol/smoking. We fitted logistic regression models, applying propensity score weights incorporating demographic, clinical, and surgical factors to assess associations between alcohol and smoking and 30-day postoperative outcomes; surgical complications, readmission, reoperation, and emergency department (ED) visits.ResultsRisky alcohol and smoking, risky alcohol only, and smoking only were reported by 2852 (1.4%), 2840 (1.4%), and 44,042 (22%) patients, respectively. Relative to all other groups, the alcohol and smoking group had greater odds of surgical complications, readmission, and reoperation. Relative to the no alcohol and smoking group, the alcohol only group higher odds of reoperation and smoking only group had higher odds of emergency department visits.ConclusionsThe combination of smoking and risky drinking conferred the highest likelihood of complications, readmission, and reoperation before surgery. Co-occurring alcohol and smoking at the time of surgery warrants special attention as a patient risk factor and deserves additional research.Copyright © 2022 Wolters Kluwer Health, Inc. All rights reserved.

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