• Timo W Hakkarainen, Scott R Steele, Amir Bastaworous, E Patchen Dellinger, Ellen Farrokhi, Farhood Farjah, Michael Florence, Scott Helton, Marc Horton, Michael Pietro, Thomas K Varghese, and David R Flum.
• Department of Surgery, University of Washington Medical Center, Seattle.
• JAMA Surg. 2015 Mar 1;150(3):223-8.

ImportanceNonsteroidal anti-inflammatory drugs (NSAIDs) have many physiologic effects and are being used more commonly to treat postoperative pain, but recent small studies have suggested that NSAIDs may impair anastomotic healing in the gastrointestinal tract.ObjectiveTo evaluate the relationship between postoperative NSAID administration and anastomotic complications.Design, Setting, And ParticipantsRetrospective cohort study of 13,082 patients undergoing bariatric or colorectal surgery at 47 hospitals in Washington State from January 1, 2006, through December 31, 2010, using data from the Surgical Care and Outcomes Assessment Program linked to the Washington State Comprehensive Abstract Reporting System.ExposureNSAID administration beginning within 24 hours after surgery.Main Outcomes And MeasuresWe used multivariate logistic regression modeling to assess the risk for anastomotic complications (reoperation, rescue stoma, revision of an anastomosis, and percutaneous drainage of an abscess) through 90 days after bariatric and colorectal surgery involving anastomoses.ResultsOf the 13,082 patients (mean [SD] age, 58.1 [15.8] years; 60.7% women), 3158 (24.1%) received NSAIDs. The overall 90-day rate of anastomotic leaks was 4.3% for all patients (151 patients [4.8%] in the NSAID group and 417 patients [4.2%] in the non-NSAID group; P=.16). After risk adjustment, NSAIDs were associated with a 24% increased risk for anastomotic leak (odds ratio, 1.24 [95% CI, 1.01-1.56]; P=.04). This association was isolated to nonelective colorectal surgery, for which the leak rate was 12.3% in the NSAID group and 8.3% in the non-NSAID group (odds ratio, 1.70 [95% CI, 1.11-2.68]; P=.01).Conclusions And RelevancePostoperative NSAIDs were associated with a significantly increased risk for anastomotic complications among patients undergoing nonelective colorectal resection. To determine the role of NSAIDs in colorectal surgery, future evaluations should consider specific formulations, the dose effect, mechanism, and other relevant outcome domains, including pain control, cardiac complications, and overall recovery.

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