Extended long-term (> 5 years) outcome of cerebrospinal fluid shunting in idiopathic normal pressure hydrocephalus.

Background: Shunt surgery has been established as the only durable and effective treatment for idiopathic normal pressure hydrocephalus.

Objective: We evaluated the "extended" long-term follow-up (> 5 years) in a prospective study cohort who underwent shunting between 1990 and 1995. A secondary objective was to determine the cause of death in these patients.