• Kevin B Laupland, Kiran Shekar, Alexis Tabah, Pierre Clement, Felicity Edwards, and Mahesh Ramanan.
• Department of Intensive Care Services, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia.
• Intern Med J. 2023 May 1; 53 (5): 812818812-818.

BackgroundAlthough inflammatory bowel disease (IBD) is associated with major morbidity and mortality, few studies have evaluated its associated burden of critical illness.AimsTo examine the epidemiology and outcome of intensive care unit (ICU) admission among patients with IBD in North Brisbane, Australia.MethodsA population-based cohort design was used. All admissions to ICU serving the Metro North Hospital and Health Service among adult residents during 2017-2019 were included. Data were obtained from ICU clinical information systems with linkages to statewide admissions and death registries.ResultsAmong 9011 ICU admissions, 101 (1.1%) were among patients with IBD, of which 57 (0.6%) and 44 (0.5%) had ulcerative colitis (UC) and Crohn disease (CD) respectively. The incidence of ICU admission was 379, 1336, 1514 and 1429 per 100 000 annually among those without IBD, CD, UC and IBD respectively. Patients with IBD were at excess risk for admission across all age groups, with women aged <50 years at highest risk and men thereafter. The all-cause 90-day case-fatality rates following ICU admission were not significantly different among patient groups and were 18%, 12%, 15% and 12% for CD, UC, IBD and non-IBD respectively. However, as compared with non-IBD patients, those with CD (151.8 vs 39.4 per 100 000; relative risk (RR) 3.85; 95% confidence interval (CI) 1.25-9.02; P = 0.013), UC (159.4 vs 39.4 per 100 000; RR 4.05; 95% CI 1.48-8.84; P = 0.005) and IBD (155.6 vs 39.4 per 100 000; RR 3.95; 95% CI 1.96-7.10; P = 0.002) were at significantly higher risk for mortality.ConclusionsPatients with IBD suffer a major burden of critical illness.© 2021 Royal Australasian College of Physicians.

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