The Role of Third Ventriculostomy in the Management of Obstructive Hydrocephalus

Abstract

Objective: Endoscopic third ventriculostomy (ETV) is an effective treatment for occlusive hydrocephalus caused by an obstruction of the CSF flow in the aqueduct or the posterior fossa. We evaluated the factors age, pathology and surgical technique on the results of the ETV.

Methods: Between November 1992 and October 2000 171 ETV have been performed in 159 patients. The follow-up was evaluated in 150 patients. The age ranged from 10 days to 77 years (mean age 35 years). The hydrocephalus was caused by benign aqueductal stenosis in 77 patients, space-occupying lesions in 59, by intraventricular hemorrhages in 11, and by other causes in 3 patients. The trajectory was planned in 31 patients by frame-based and in 4 patients by frameless stereotaxy.

Results: The overall success rate of a single ETV was 71.3 % and including successful re-ETV 76.7 %. Best results were observed in adults and children older than 1 year. Infants demonstrated significantly worser outcomes. Patients with benign aqueductal stenosis and tumor compressing the aqueduct had the greatest profit from the ETV. The stereotactic guidance had no influence on the outcome and the number of severe complications. Complications were one arterial bleeding, three venous bleedings, and one ICB, all without permanent deficit, except one permanent hemiparesis. No mortality was observed.

Endoscopy - Ventriculostomy - Hydrocephalus - Complications

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