• Neurosurgery · Oct 2019

    Randomized Controlled Trial Comparative Study

    The Incidence of Postoperative Seizures Following Treatment of Postinfectious Hydrocephalus in Ugandan Infants: A Post Hoc Comparison of Endoscopic Treatment vs Shunt Placement in a Randomized Controlled Trial.

    • Maria Punchak, Edith Mbabazi Kabachelor, Michael Ogwal, Esther Nalule, Joyce Nalwoga, Peter Ssenyonga, John Mugamba, Abbas Rattani, Michael C Dewan, Abhaya V Kulkarni, Steven J Schiff, and Benjamin Warf.
    • Global Neurosurgery Initiative, Program in Global Surgery and Social Change, Department of Global Health and Social Medicine, Harvard Medical School, Boston, Massachusetts.
    • Neurosurgery. 2019 Oct 1; 85 (4): E714-E721.

    BackgroundThere are currently no published data directly comparing postoperative seizure incidence following endoscopic third ventriculostomy (ETV), with/without choroid plexus cauterization (CPC), to that for ventriculoperitoneal shunt (VPS) placement.ObjectiveTo compare postoperative epilepsy incidence for ETV/CPC and VPS in Ugandan infants treated for postinfectious hydrocephalus (PIH).MethodsWe performed an exploratory post hoc analysis of a randomized trial comparing VPS and ETV/CPC in 100 infants (<6 mo old) presenting with PIH. Minimum follow-up was 2 yr. Variables associated with and the incidence of postoperative epilepsy were compared (intention-to-treat) using a bivariate analysis. Time to first seizure was compared using the Kaplan-Meier method, and the relative risk for the 2 treatments was determined using Mantel-Haenszel hazard ratios.ResultsSeizure incidence was not related to age (P = .075), weight (P = .768), sex (P = .151), head circumference (P = .281), time from illness to hydrocephalus onset (P = .973), or hydrocephalus onset to treatment (P = .074). Irritability (P = .027) and vision deficit (P = .04) were preoperative symptoms associated with postoperative seizures. Ten (10%) patients died, and 20 (20%) developed seizures over the follow-up period. Overall seizure incidence was 9.4 per 100 person-years (9.4 and 9.5 for ETV/CPC and VPS, respectively; P = .483), with no significant difference in seizure risk between groups (hazard ratio, 1.02; 95% CI: 0.42, 2.45; P = .966). Mean time to seizure onset was 8.5 mo for ETV/CPC and 11.2 mo for VPS (P = .464). As-treated, per-protocol, and attributable-intervention analyses yielded similar results.ConclusionPostoperative seizure incidence following treatment of PIH was 20% within 2 yr, regardless of treatment modality.Copyright © 2019 by the Congress of Neurological Surgeons.

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