Su2010 The Prevalence of Clostridium difficile Infection in Hospitalized Pediatric and Adult Patients With Inflammatory Bowel Disease

Background: Clostridium difficile infection (CDI) is the leading cause of nosocomial diarrhea in the USA and is increasing in prevalence. Evidence from the adult literature has demonstrated that patients with inflammatory bowel disease (IBD) have a higher prevalence of CDI than the general population. There is a paucity of literature regarding CDI in pediatric patients with IBD, which may differ from adults. The prevalence of CDI in hospitalized pediatric IBD patients compared with adult IBD patients is unknown. Aim: To compare the prevalence of CDI in hospitalized pediatric IBD patients, adult IBD patients and hospitalized patients without IBD. Methods: The rates of CDI per 1,000 hospitalizations for patients with and without IBD in the state of Maryland between 1993 and 2011 were examined using the Maryland Health Services Cost Review Commission database. ICD-9-CM codes in any diagnostic position for CDI (008.45), ulcerative colitis (UC; 556) and Crohn's disease (CD; 555) were used to identify hospitalizations. A hospitalization without a code for 555 or 556 was considered a non-IBD hospitalization. Pediatric patients were defined as less than 18 years of age on admission. Incidence rate ratios with robust variances comparing CDI in pediatrics and adults by type of IBD and with patients without IBD were calculated for all years and the most recent year using Stata 11. Results: Among patients with IBD, the rate of CDI was 30.5 per 1,000 hospitalizations compared with 7.8 per 1,000 hospitalizations in patients without IBD (p,0.001). Among adults, the rate of CDI was 3 times greater in IBD hospitalizations than non-IBD hospitalizations (p,0.001) and among pediatric patients, the rate of CDI was over 20 times greater in IBD than non-IBD hospitalizations (p,0.001). In 2011, children with CD had a 2.5 times greater rate of CDI than adults with CD (p,0.001). In 2011, children with UC had a 44% decreased rate of CDI than adults with UC (p=0.01). There was no difference in the rate of CDI between pediatric CD and UC during 1993-2011 (p=0.39). However, in 2011, pediatric CD patients had a 3.5 times greater rate than pediatric UC patients (p,0001). Conclusions: Our study shows that hospitalized children with IBD have a significantly greater prevalence of CDI than hospitalized children without IBD. Moreover, children with CD have a greater rate of CDI during hospitalization than adults with CD, although the opposite is true with UC, potentially suggesting different risk factors for CDI in the pediatric IBD population.