Postoperative Safety Profile of Minimally Invasive Ileocolonic Resections for Crohn's Disease in the Era of Biologic Therapy.

Background: There is controversy regarding the postoperative outcomes in Crohn's disease [CD] patients exposed to vedolizumab [VDZ] or ustekinumab [UST]. We aimed to describe our surgical outcomes in patients who underwent minimally invasive ileocolonic resection [MIS-ICR] for CD who had preoperative biologic therapy.

Methods: All consecutive adult patients who had MIS-ICR for CD between 2014 and 2021 at our institution were included. Patients were divided into four groups: VDZ, UST, anti-tumour necrosis factor [anti-TNF], and no biologic group. Timing between the last dose of biologics and surgery was per surgeon's discretion. The primary outcome was intra-abdominal septic complications. Secondary outcomes included all 30-day complications.

Results: A total of 274 patients were identified. Of these, 113 [41.2%] patients had received anti-TNF, 52 [19%] had received UST, and 19 [7%] had received VDZ. There was no difference between the four groups regarding baseline risk factors. There was no difference between the four groups regarding intra-abdominal septic complications [4.4% for no biologic, 5.3% for anti-TNF, 5.8% for UST, and 5.3% for VDZ; p = 0.987], surgical site infection rate, overall 30-day morbidity, overall 30-day readmission, overall surgical and medical complications, urinary tract infection, pulmonary infections, or length of stay. Those results were consistent after a subgroup analysis based on complexity of the disease.

Conclusions: This retrospective analysis demonstrates an equivalent postoperative safety profile for patients treated with preoperative anti-TNF, VDZ, or UST versus no biologic therapy within 3 months of MIS-ICR for Crohn's disease. Preoperative biologic therapy may not increase complications after minimally invasive ileocolonic resection in Crohn's disease. Further studies with larger sample sizes are needed to confirm results.