Impact of Clostridium difficile colitis on 5-year health outcomes in patients with ulcerative colitis
Version of Record online: 14 OCT 2012
© 2012 Blackwell Publishing Ltd
Alimentary Pharmacology & Therapeutics
Volume 36, Issue 11-12, pages 1032–1039, December 2012
How to Cite
Murthy, S. K., Steinhart, A. H., Tinmouth, J., Austin, P. C., Daneman, N. and Nguyen, G. C. (2012), Impact of Clostridium difficile colitis on 5-year health outcomes in patients with ulcerative colitis. Alimentary Pharmacology & Therapeutics, 36: 1032–1039. doi: 10.1111/apt.12073
- Issue online: 7 NOV 2012
- Version of Record online: 14 OCT 2012
- Manuscript Accepted: 15 SEP 2012
- Manuscript Revised: 12 SEP 2012
- Manuscript Revised: 30 MAY 2012
- Manuscript Received: 1 MAY 2012
- Canadian Institutes of Health Research
- Canadian Association of Gastroenterology
- Axcan Pharma
Clostridium difficile colitis (CDC) is associated with an increased short-term mortality risk in hospitalised ulcerative colitis (UC) patients. We sought to determine whether CDC also impacts long-term risks of adverse health events in this population.
To determine whether CDC also impacts long-term risks of adverse health events in this population.
A population-based retrospective cohort study was conducted of UC patients hospitalised in Ontario, Canada between 2002 and 2008. Patients with and without CDC were compared on the rates of adverse health events. The primary outcomes were the 5-year adjusted risks of colectomy and death.
Among 181 patients with CDC and 1835 patients without CDC, the 5-year cumulative colectomy rates were 44% and 33% (P = 0.0052) and the 5-year cumulative mortality rates were 27% and 14% (P < 0.0001) respectively. CDC was associated with a higher adjusted 5-year risk of mortality [adjusted hazard ratio (aHR) 2.40, 95% CI 1.37–4.20], but not of colectomy (aHR 1.18, 95% CI 0.90–1.54). CDC impacted mortality risk both during index hospitalisation (adjusted odds ratio 8.90, 95% CI 2.80–28.3) as well as over 5 years following hospital discharge among patients who recovered from their acute illness (aHR 2.41, 95% CI 1.37–4.22). Colectomy risk was not influenced by CDC in this cohort.
Clostridium difficile colitis is associated with increased short-term and long-term mortality risks among hospitalised ulcerative colitis patients. As colectomy risk is not similarly impacted by Clostridium difficile colitis, factors predictive of death among C. difficile-infected ulcerative colitis patients require elucidation.