Abstract
Patients with IBD have an increased risk for Clostridioides difficile infection (CDI), which can lead to worse IBD outcomes. The diagnosis of CDI in IBD patients is complicated by higher C. difficile colonization rates and shared clinical symptoms of intestinal inflammation. Traditional risk factors for CDI, such as antibiotic exposure, may be lacking in IBD patients due to underlying intestinal microbiota dysbiosis. While CDI disproportionately affects people with IBD, patients with IBD are typically excluded from CDI clinical trials creating a knowledge gap in the diagnosis and management of these two diseases. This narrative review aims to provide a comprehensive overview of the diagnosis, treatment, and prevention of CDI in IBD patients. Distinguishing CDI from C. difficile colonization in the setting of an IBD exacerbation is important to avoid treatment delays. When CDI is diagnosed, extended courses of anti-C. difficile antibiotics may lead to better CDI outcomes. Regardless of a diagnosis of CDI, the presence of C. difficile in an IBD patient should prompt a disease assessment of the underlying IBD. Microbiota-based therapies and bezlotoxumab appear to be effective in preventing CDI recurrence in IBD patients. Patients with IBD should be considered high risk for CDI recurrence and evaluated for a preventative strategy when diagnosed with CDI. Ultimately, the co-management of CDI in an IBD patient requires a nuanced, patient-specific approach to distinguish CDI from C. difficile colonization, prevent CDI recurrence, and manage the underlying IBD.
Published Version
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