• Jae Moo Lee, Jun Bai P Chang, Majed El Hechi, Napaporn Kongkaewpaisan, Alexander Bonde, April E Mendoza, Noelle N Saillant, Peter J Fagenholz, George Velmahos, and Haytham Ma Kaafarani.
• Department of Surgery, Massachusetts General Hospital, Boston, MA.
• J. Am. Coll. Surg. 2019 Jul 1; 229 (1): 48-55.

BackgroundRecent small randomized trials suggest that primary anastomosis with a diverting loop ileostomy (PADLI) is a safe alternative to Hartmann's procedure (HP) for patients with acute diverticulitis necessitating emergent operation. We sought to examine the 30-day outcomes of patients undergoing emergent HP vs PADLI.MethodUsing the American College of Surgeons NSQIP Colectomy Procedure Targeted Database from 2012 to 2016, all patients with acute diverticulitis who underwent emergent HP or PADLI were identified. Multivariable logistic models were constructed to compare the 30-day mortality, overall morbidity, and individual postoperative complications (eg surgical site infection, bleeding, sepsis) of the 2 procedures, controlling for all preoperative variables (eg demographics, comorbidities, laboratory values, illness severity), as well as intraoperative and procedure-specific variables (eg wound classification).ResultsOf 130,963 patients, 2,729 patients were included. Median age was 64 years, 48.5% were male; the majority of patients underwent HP and only 208 (7.6%) underwent PADLI. Hartmann's procedure patients had more comorbidities (eg COPD: 9.8% vs 4.8%; p = 0.017), were more functionally dependent (6.3% vs 2.4%; p = 0.025), and were sicker (eg septic shock: 11.1% vs 5.3%; p = 0.015) compared with PADLI patients. The mortality rates for HP vs PADLI were 7.6% and 2.9%, respectively (p = 0.011). The morbidity rates were 55.4% and 48.6%, respectively (p = 0.056). In multivariable analyses, compared with HP, PADLI did not result in increased rates of mortality (odds ratio 0.21; 95% CI 0.03 to 1.58; p = 0.129) or morbidity (odds ratio 0.96; 95% CI 0.63 to 1.45; p = 0.834). The odds of most major postoperative complications were also similar for HP and PADLI overall.ConclusionsCurrently, surgeons perform HP more frequently than PADLI. When controlling for patient population differences, PADLI appears to be at least a safe alternative to HP for select patient populations needing emergent surgical management of acute diverticulitis.Copyright © 2019 American College of Surgeons. Published by Elsevier Inc. All rights reserved.

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