Oral Vs Intravenous Discharge Antibiotic Regimens in the Management of Intra-abdominal Abscesses in Penetrating Crohn's Disease.

Background Antibiotics are a cornerstone in management of intra-abdominal abscesses in Crohn's disease (CD). Yet, the optimal route of antibiotic administration is poorly studied. We aimed to compare surgical and nonsurgical readmission outcomes for patients hospitalized for intra-abdominal abscesses from CD discharged on oral (PO) or intravenous (IV) antibiotics.Methods Data for patients with CD hospitalized for an intra-abdominal abscess were obtained from 3 institutions from January 2010 to December 2020. Baseline patient characteristics were obtained. Primary outcomes of interest included need for surgery and hospital readmission within 1 year from hospital discharge. We used multivariable logistic regression models and Cox regression analysis to adjust for abscess size, history of prior surgery, history of penetrating disease, and age.Results We identified 99 patients discharged on antibiotics (PO = 74, IV = 25). Readmissions related to CD at 12 months were less likely in the IV group (40% vs 77% PO, P = .01), with the IV group demonstrating a decreased risk for nonsurgical readmissions over time (hazard ratio, 0.376; 95% confidence interval, 0.176-0.802). Requirement for surgery was similar between the groups. There were no differences in time to surgery between groups.Conclusions In this retrospective, multicenter cohort of CD patients with intra-abdominal abscess, surgical outcomes were similar between patients receiving PO vs IV antibiotics at discharge. Patients treated with IV antibiotics demonstrated a decreased risk for nonsurgical readmission. Further prospective trials are needed to better delineate optimal route of antibiotic administration in patients with penetrating CD. We performed a retrospective multicenter study of hospitalized Crohn's disease patients with intra-abdominal abscesses comparing outcomes for oral vs intravenous discharge antibiotic regimens. We found increased readmissions in the oral group but similar rates of surgery. Graphical Abstract