BACKGROUND: Ventriculostomy-associated infections are a serious complication of external ventricular drains. The objective of this study was to analyze the clinical features of and risk factors for such infections. METHODS: We retrospectively collected demographic and clinical data on patients with indwelling ventriculostomy catheters hospitalized in a teaching hospital from July 2001 to June 2006, comparing those with and without ventriculostomy-associated infections. RESULTS: A total of 197 drains (2910 catheter-days) placed in 155 patients were studied. Infections developed in 28 of the 197 (14.2%) drains. The duration from insertion to infection ranged from 7 to 36 days. The cut-off point of duration from insertion to infection was 15.5 days. Re-insertion because of catheter malfunction carried a high risk of infection (p<0.001). Patients with infections had a longer intensive care unit stay (p=0.001), longer duration of catheterization (p=0.002), and a higher incidence of concurrent sepsis (p=0.018), urinary tract infection (p=0.011) and pneumonia (p=0.004). Gram-negative bacilli were the leading pathogens (84%); Pseudomonas aeruginosa was the most common isolate. Polymicrobial infections occurred later than monomicrobial infections (p=0.003). CONCLUSIONS: Repeated insertion and longer duration of drains are major risk factors for ventriculostomy-associated infections. Crown Copyright 2009. Published by Elsevier Ltd. All rights reserved.
BACKGROUND: Ventriculostomy-associated infections are a serious complication of external ventricular drains. The objective of this study was to analyze the clinical features of and risk factors for such infections. METHODS: We retrospectively collected demographic and clinical data on patients with indwelling ventriculostomy catheters hospitalized in a teaching hospital from July 2001 to June 2006, comparing those with and without ventriculostomy-associated infections. RESULTS: A total of 197 drains (2910 catheter-days) placed in 155 patients were studied. Infections developed in 28 of the 197 (14.2%) drains. The duration from insertion to infection ranged from 7 to 36 days. The cut-off point of duration from insertion to infection was 15.5 days. Re-insertion because of catheter malfunction carried a high risk of infection (p<0.001). Patients with infections had a longer intensive care unit stay (p=0.001), longer duration of catheterization (p=0.002), and a higher incidence of concurrent sepsis (p=0.018), urinary tract infection (p=0.011) and pneumonia (p=0.004). Gram-negative bacilli were the leading pathogens (84%); Pseudomonas aeruginosa was the most common isolate. Polymicrobial infections occurred later than monomicrobial infections (p=0.003). CONCLUSIONS: Repeated insertion and longer duration of drains are major risk factors for ventriculostomy-associated infections. Crown Copyright 2009. Published by Elsevier Ltd. All rights reserved.
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