PER-OPERATIVE FINDINGS OF BLOCKED VENTRICULOPERITONEAL SHUNT: A STUDY OF 72 CASES
Abstract
Background: Most patients with hydrocephalus are treated with ventriculo-peritoneal (VP) shuntplacement; however, malfunction is common and is usually caused by mechanical failure. The aimof this study was to evaluate the per-operative findings accompanying presumed VP shuntmalfunction. Methods: This is a descriptive study of 72 patients operated for shunt malfunction inthe Department of Neurosurgery, Postgraduate Medical Institute, Lady Reading Hospital,Peshawar from January to December 2008. Presenting symptoms and signs, clinical shuntfunction, operative findings and outcome were recorded. Results: Common presenting featureswere vomiting, irritability and general toxic look of patients. Male to female ratio was 3:1. Upperend block was observed in 39 patients while lower end and reservoir block was noted in 13 and 2patients respectively. Choroids plexus was found in 29.2% of cases with upper end block, shuntrevision was performed in most of cases (80.6%). Conclusion: The importance of clinical featurescannot be overlooked in a patient with shunt malfunction. Upper end block due to choroids plexusis common operative finding.Keywords: VP shunt, shunt malfunction, choroid plexusReferences
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