Intra-Operative Abdominal Drain Placement for Gallbladder Cancer Surgery and Risk of Infectious Complications.

Background: Routine intra-operative abdominal drain placement (IADP) is not beneficial for uncomplicated cholecystectomies though outcomes in gallbladder cancer surgery is unclear. This retrospective study hypothesized that patients with IADP (+IADP) for gallbladder cancer surgery have a higher risk of post-operative infectious complications (PIC) compared with patients without IADP (-IADP). Patients and Methods: The 2014-2017 American College of Surgeons National Surgical Quality Improvement Program (ACS-NSQIP) database was queried for +IADP and -IADP patients who had gallbladder cancer surgery. Post-operative infectious complications were defined as septic shock, organ/space infection (OSI), or percutaneous drainage. Multivariable analyses were performed to analyze the associated risk of PIC. Results: Of 385 patients, 237 (61.6%) were +IADP. The +IADP patients had higher rates of post-operative bile leak, OSI, re-admission, and increased length of stay (p < 0.05). The +IADP patients were not associated with increased risk of PIC (p > 0.05). Bile leak (odds ratio [OR], 10.61; p < 0.001), peri-operative blood transfusion (OR, 3.77; p = 0.003), biliary reconstruction (OR, 2.88; p = 0.018), and pre-operative biliary stent placement (OR, 3.02; p = 0.018) were the strongest associated risk factors of PIC. Patients with drains in place at or longer than 30 days post-operatively had an increased associated risk compared with patients who did not (OR, 6.88; 95% confidence interval [CI], 2.16-21.86; p < 0.001). Conclusions: More than 60% of gallbladder cancer surgeries included IADP and was not associated with an increased risk of PIC. Intra-operative abdominal drain placement was not associated with an increased risk of PIC, unless drains were left in place for 30 days or longer. Increased risk of PIC was associated with bile leak, peri-operative blood transfusion, pre-operative biliary stent placement, and biliary reconstruction.