Risk factors for external ventricular drainage infections

Area of Science:

• Neurosurgery
• Infectious Disease Epidemiology

Background:

• External ventricular drainage (EVD) is crucial for managing cerebrospinal fluid (CSF) in neurosurgery.
• EVD placement is associated with a high risk of secondary infections, including meningitis and ventriculitis.
• Previous infection rates necessitated the development of new handling protocols.

Purpose of the Study:

• To evaluate the impact of a hospital-wide EVD handling protocol on the incidence of secondary infections.
• To assess the effectiveness of implemented guidelines in reducing EVD-related complications.

Main Methods:

• A cohort study involving 171 patients undergoing EVD placement (excluding those with pre-existing meningitis/ventriculitis) from January 2021 to March 2024.
• Matched cohort analysis and logistic regression were used to compare infection rates before and after protocol implementation.
• Patients were analyzed in pre-protocol (n=104) and post-protocol (n=67) groups.

Main Results:

• The incidence of infections was significantly higher before protocol implementation (18.27%) compared to after (7.46%) (p<0.0001).
• Regression analysis confirmed that the pre-protocol period was an independent risk factor for higher infection rates.
• The study demonstrated a substantial reduction in EVD-related infections post-guideline adoption.

Conclusions:

• A stringent, hospital-wide protocol for EVD management effectively reduces the rate of secondary infections.
• The findings support the widespread adoption of standardized EVD handling procedures to enhance patient safety.
• The implemented protocol proved successful in mitigating meningitis and ventriculitis risks associated with EVD.