Impact of Cirrhosis on Outcomes in Inflammatory Bowel Disease Hospitalizations.

Background: Evidence regarding outcomes in inflammatory bowel disease (IBD) hospitalizations with coexisting cirrhosis is scant. We queried the National Inpatient Sample (NIS) database to evaluate the impact of cirrhosis on hospitalization characteristics and outcomes in patients with Crohn's disease and ulcerative colitis.

Methods: All admissions that listed IBD as a primary diagnosis by ICD-10-CM code (K50.X for Crohn's disease and K51.X for ulcerative colitis) in the NIS for 2016 and 2017 were included. Attributes of admissions with cirrhosis (K74.XX, 70.3, 78.81, and 71.7) were compared with noncirrhosis IBD admissions. The primary outcome was inpatient mortality. Length of stay and total hospital charges comprised secondary outcomes.

Results: A total weighted sample of 276,430 IBD admissions were identified, including 4615 with a concomitant diagnosis of cirrhosis. In a multivariate model, after adjusting for comorbidities, age, alimentary surgery during the admission and hospital type (teaching, urban nonteaching or rural), the presence of cirrhosis was associated with a higher inpatient mortality [odds ratio: 1.57; 95% confidence interval (CI): 1.16-2.15] and increased cost of admission (mean difference $11,651; 95% CI: 3830-19,472). No difference was noted in length of stay (difference: 0.44 d; 95% CI: -0.12-1.02) among these groups. Among admission diagnoses, infectious complications were the primary cause of death in 93.3% (95% CI: 87.1%-99.5%) of all inpatient mortality in the IBD with cirrhosis cohort as compared with 80.1% (95% CI: 77.6%-82.7%) of the mortality among IBD patients without cirrhosis ( P =0.01).

Conclusions: This study demonstrates that the presence of cirrhosis has an independent negative impact on outcomes for hospitalized patients with IBD as reflected by increased in-hospital mortality and higher cost of admission. A majority of the mortality was attributable to infections.