Abstract

Ventriculostomy placement is a life-saving procedure. Our aim was to determine the predictors of inaccurate placement, our infection and hemorrhage rate. This was a retrospective study of EVD placements between January - November 2019. Data related to hemorrhage, infection and catheter misplacement were collected. Univariate and multivariate analyses of predictors of suboptimal catheter placement were performed. 131 consecutive patients underwent freehand EVD placement. The indications were subarachnoid hemorrhage in 36 (27.5%) patients, hemorrhagic stroke in 36 (27.5%), and trauma in 32 (24.4%) patients. Nine patients (6.8%) had culture-proven CSF bacterial infection. Sixteen (12.2%) patients developed small tract hemorrhage, while 8 (6.1%) patients developed large intraparenchymal hemorrhage. There was no correlation between tract hemorrhage or large hemorrhage with the use of antiplatelet or anticoagulation medicines on presentation, diagnosis or Kakarla grade. Trauma diagnosis (odds ratio 2.59, p-value 0.05), left side of EVD placement (odds ratio 2.84, p-value 0.03), increasing midline shift (odds ratio 1.09, p-value 0.03), and lower bicaudate index (odds ratio 0.56, p-value 0.02) were all predictors of Kakarla grade 3 suboptimal placement. When Kakarla grade 2 and 3 were combined, similar results were obtained except that midline shift was no longer statistically significant. The multivariable regression model predicting Kakarla 3 suboptimal placement revealed that low bicaudate index and left sided EVD were predictors of misplaced EVD.

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