Background: Ventriculoperitoneal shunt is the commonest treatment modality of established hydrocephalous. The objective of this study was to determine the sex and age distribution. post op year of shunt obstruction and site and causes of ventriculoperitoneal obstruction in patients with blocked VP shunts. Material & Methods: This descriptive study was conducted at Department of Neuros... https://www.ldartstudio.com/product-category/sleeping-mask/