Objective
Clostridium difficile infection (CDI) is a common hospital-acquired infection. Previous reports on CDI's incidence, risk factors and impact on resources in the surgical population are limited. In this context, we study CDI across diverse surgical settings.
Methods
We prospectively identified patients with laboratory-confirmed postoperative CDI after 40 different general, vascular, or gynecologic surgeries at 52 academic & community hospitals between 7/2012-9/2013. We used multivariable regression models to identify CDI risk factors and its impact on resource utilization.
Results
Of 35,363 patients, 179 (0.51%) developed postoperative CDI. The highest rates of CDI were after lower-extremity amputation (2.6%), followed by bowel resection or repair (0.9%) and gastric or esophageal operations (0.7%). Gynecologic and endocrine operations had the lowest rates (0.1 & 0%, respectively). On multivariable analyses, older age, chronic immunosuppression, hypoalbuminemia (≤3.5 g/dL) and preoperative sepsis were associated with CDI. Use of prophylactic antibiotics was not independently associated with CDI, neither was sex, BMI, surgical priority, weight loss or comorbid conditions. Three procedure groups had higher odds of postoperative CDI: Lower-extremity amputations (aOR=3.5, p=0.03), gastric or esophageal operations (aOR=2.1, p=0.04) and bowel resection or repair (aOR=2, p=0.04). Postoperative CDI was independently associated with increased length of stay (mean 13.7 vs 4.5 days), emergency department presentations (18.9 vs 9.1%) and readmissions (38.9 vs 7.2%, all p<0.001).
Conclusions
Incidence of postoperative CDI varies by surgical procedure. Postoperative CDI is also associated with higher rates of extended length of stay, emergency room presentations & readmissions, which places a potentially preventable burden on hospital resources.