Marginal ulcer continues to be a major source of morbidity over time following gastric bypass.

Abstract

Marginal ulcerations (MU) are a common and concerning complication following Roux-en-Y gastric bypass (RYGB) surgery. The aim of the present study was to examine the progression of MU and identify risk factors for the need for surgical intervention in patients with MU following RYGB. A New York state longitudinal administrative database was queried to identify patients who underwent RYGB between 2005 and 2010 and who were followed for at least 4years for the development of MU using ICD-9 and CPT codes. Patients with perforation as their first presentation of MU were excluded. Multivariable Cox proportional hazard model was built to identify risk factors for surgical intervention. Hazard ratios (HR) with 95% confidence intervals (CI) were reported. We identified 35,075 patients who underwent RYGB. Mean age was 42.47 ± 10.90years and most were female (81.08%). There were 2201 (6.28%) patients with MU, of which 204 (9.27% of MU; 0.58% of RYGB overall) required surgery. The estimated cumulative incidence of having surgical intervention 1, 2, 5, and 8years after MU diagnosis was 6% (95% CI 5-7%), 8% (95% CI 7-9%), 13% (95% CI 11-14%), and 17% (95% CI 13-20%), respectively. At time of MU diagnosis, younger age (HR 0.93 every 5years, 95% CI 0.87-0.99), white race (HR 1.60, 95% CI 1.15-2.23), and weight loss (HR 2.82, 95% CI 1.62-4.88) were independent risk factors for subsequent surgical intervention for MU. Estimated cumulative incidence of MU recurrence was 15% (95% CI 9-22%) and 24% (95 CI% 15-32%) at 6 and 12months after surgical intervention. The need for surgical intervention for MU after RYGB is uncommon. Young age, white race, and marked weight loss are risk factors for surgical intervention. Such patients may benefit from early intensive medical therapy at the time of MU diagnosis.