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Updated: Oct 3, 2025
A Protocol to Characterize the Morphological Changes of Clostridium difficile in Response to Antibiotic Treatment
Published on: May 25, 2017
The effects of avoiding extended antimicrobial drain prophylaxis on Clostridioides difficile and postprocedural
Alexandria C Marino1, Evan D Robinson2, Jakob A Durden3
11Department of Neurological Surgery, University of Virginia.
Objective:
Postprocedural infection is a consequential complication of neurosurgical intervention. Periprocedural antimicrobial prophylaxis is routinely administered to prevent infection, and in some cases, continued for extended periods while surgical drains remain in place. However, there is little evidence that extended antimicrobial administration is necessary to reduce postprocedural infection, and extended antimicrobials can be associated with harm, such as Clostridioides difficile infection. The authors sought to evaluate whether shortening the duration of postprocedural antimicrobial prophylaxis would decrease the incidence of C. difficile infection without increasing the incidence of postprocedural infection.
Methods:
In this retrospective study, two general neurosurgical cohorts were examined. In one cohort, postoperative antimicrobial prophylaxis was limited to 24 hours; in the other, some patients received extended postoperative antimicrobial prophylaxis while surgical drains or external ventricular drains (EVDs) remained in place. Rates of infection with C. difficile as well as postprocedural infection after surgery and EVD placement were compared.
Results:
Seven thousand two hundred four patients undergoing 8586 surgical procedures and 413 EVD placements were reviewed. The incidence of C. difficile infection decreased significantly from 0.5% per procedural encounter to 0.07% with the discontinuation of extended postprocedural antibiotics within 90 days of a procedure. Rates of postprocedural infection and EVD infection did not significantly change. Results were similar in subgroups of patients with closed suction drains as well as cranial and spine subgroups.
Conclusions:
Discontinuation of extended antimicrobial prophylaxis was associated with a significant decrease in the incidence of C. difficile infection without a concomitant change in postprocedural infections or EVD-associated infection. This study provides evidence in support of specialtfy-wide discontinuation of extended postoperative antimicrobial prophylaxis, even in the presence of closed suction drains.
Insights
Shortening antimicrobial prophylaxis after neurosurgery significantly reduced Clostridioides difficile infections. This change did not increase postprocedural or external ventricular drain infections, supporting shorter antibiotic durations.
Area of Science:
- Neurosurgery
- Infectious Disease Epidemiology
- Antimicrobial Stewardship
Background:
- Postprocedural infections are a significant risk in neurosurgery.
- Extended antimicrobial prophylaxis is common but lacks strong evidence for benefit and carries risks like Clostridioides difficile infection.
Purpose of the Study:
- To evaluate if shortening antimicrobial prophylaxis duration reduces Clostridioides difficile infection rates without increasing other postprocedural infections.
- To assess the impact of discontinuing extended antimicrobial prophylaxis in neurosurgical patients.
Main Methods:
- Retrospective analysis of two neurosurgical cohorts with differing antimicrobial prophylaxis durations (24 hours vs. extended with drains).
- Comparison of Clostridioides difficile infection rates and postprocedural infection rates after surgery and external ventricular drain (EVD) placement.
Main Results:
- A significant decrease in Clostridioides difficile infection incidence from 0.5% to 0.07% was observed after discontinuing extended prophylaxis.
- No significant changes in postprocedural infection or EVD-associated infection rates were found.
- Findings were consistent across subgroups, including those with closed suction drains and cranial/spine procedures.
Conclusions:
- Discontinuing extended antimicrobial prophylaxis in neurosurgery is associated with a significant reduction in Clostridioides difficile infections.
- Shorter antimicrobial prophylaxis durations do not increase the risk of postprocedural or EVD-associated infections.
- Evidence supports the discontinuation of extended postoperative antimicrobial prophylaxis, even with drains present.
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