The Appendix May Protect Against Clostridium difficile Recurrence.
Clin Gastroenterol Hepatol. 2011 Jun 13;
Authors: Im GY, Modayil RJ, Lin CT, Geier SJ, Katz DS, Feuerman M, Grendell JH
BACKGROUND & AIMS: Several risk factors have been identified for the development of recurrentClostridium difficile infection (CDI) that alter host immunity and disrupt colonic flora. Although the function of the appendix has been debated, its active, gut-associated lymphoid tissue and biofilm production indicate potential roles in recovery from initial CDI and protection against recurrent CDI. We investigated whether the presence or absence of an appendix is associated with CDI recurrence. METHODS: We reviewed the medical records of adult in-patients with CDI, admitted to a tertiary-care teaching hospital from 2005 to 2007, to identify those with and without an appendix. The primary dependent variable for statistical analysis was CDI recurrence. RESULTS: In a multivariate analysis of 11 clinical variables, the presence of an appendix was inversely associated with CDI recurrence (P < .0001; adjusted relative risk [ARR], .398). Age > 60 years was also associated with CDI recurrence (P = .0280, ARR, 2.44). CONCLUSIONS: The presence of an appendix has a significant and independent, inverse association with CDI recurrence, but this finding requires validation in a prospective study. Assessing the presence or absence of an appendix might be useful in predicting CDI recurrence.
PMID: 21699818 [PubMed - as supplied by publisher]