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Updated: Aug 13, 2025

Culturing and Maintaining Clostridium difficile in an Anaerobic Environment
Published on: September 14, 2013
Clostridioides difficile infection in mechanically ventilated critically ill patients: A nested cohort study
Joanna C Dionne1, Jennie Johnstone2, Diane Heels-Ansdell3
1Department of Medicine, McMaster University, Hamilton, Ontario, Canada; Farncombe Family Digestive Health Research Institute, McMaster University Hamilton, Ontario, Canada; Department of Health Research Methods, Evaluation and Impact, McMaster University, Canada.
Clostridioides difficile infection (CDI) was uncommon in critically ill patients, with mild to moderate severity and no association with mortality. However, CDI did lead to a longer hospital stay.
Area of Science:
- Critical care medicine
- Infectious diseases
- Epidemiology
Background:
- Clostridioides difficile infection (CDI) is a significant concern in critically ill patients.
- Understanding the epidemiology and outcomes of CDI is crucial for patient management.
Purpose of the Study:
- To determine the incidence, prevalence, timing, severity, predictors, and outcomes of Clostridioides difficile infection (CDI) in critically ill patients.
- To assess the impact of CDI on patient outcomes, including mortality and hospital stay duration.
Main Methods:
- A prospective nested cohort study was conducted within a randomized trial comparing Lactobacillus rhamnosus GG to placebo.
- Cases of CDI were adjudicated using standardized definitions, and timing, severity, risk factors, and outcomes were analyzed.
Main Results:
- The incidence of CDI was 0.95 per 1000 hospital-days, with a prevalence of 3.2%.
- CDI occurred at various times: 0.3% pre-ICU, 2.2% in the ICU, and 0.8% post-ICU. Relapse or recurrence was observed in 9.3% of patients.
- Infections were generally mild to moderate, with complications like septic shock (26.7%) and organ failure (16.3%). No significant risk factors were identified, and CDI was not associated with hospital mortality.
Conclusions:
- Clostridioides difficile infection (CDI) is uncommon in critically ill patients and typically presents with mild to moderate severity.
- While not associated with increased hospital mortality, CDI was linked to a significantly longer duration of hospital stay.
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