Incidence of failure in ventriculoperitoneal and lumboperitoneal shunts in patients with idiopathic intracranial hypertension

Idiopathic intracranial hypertension (IIH) is marked by elevated intracranial pressure and often treated with lumboperitoneal (LP) or ventriculoperitoneal (VP) shunts, which frequently fail. We retrospectively analyzed 241 registry cases meeting Modified Dandy Criteria, excluding incomplete data (44%). Negative binomial regression, Chi-square tests, and Kaplan-Meier analysis assessed failure rates and predictors. At two years, VP shunts failed 1.38 times more often than LP shunts (95% CI: 0.90–2.10; p=0.139), with no significant predictors identified. Median times to failure ranged from 73.5–158 days. Findings suggest similar failure rates and highlight the need for larger studies using survival analysis to clarify time-dependent risks.