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  • Title: The Efficacy of Endoscopic Third Ventriculostomy for Idiopathic Normal Pressure Hydrocephalus.
    Author: Mehta NH, Greenberg ABW, Kahle KT.
    Journal: World Neurosurg; 2023 Nov; 179():158-166. PubMed ID: 37625638.
    Abstract:
    Recently, intervention with endoscopic third ventriculostomy (ETV) for patients with idiopathic normal pressure hydrocephalus (iNPH) has emerged as a potential minimally invasive alternative to traditional treatments (ventriculoperitoneal shunting). The clinical response to these interventions is variable and unclear. The objective of this review was to assess the efficacy of endoscopic third ventriculostomy in treating patients with iNPH. A systematic review of PubMed, Web of Science, and Google Scholar was conducted using search terms relevant to ETV and iNPH. Included studies met consistent, predetermined diagnostic criteria for iNPH, implemented ETV in subjects greater than 40 years of age, and assessed all 3 components of Hakim's triad (gait impairment, dementia, and incontinence). Data extraction included dichotomization of successful ETV clinical outcomes and a subgroup meta-analysis of ETV success rates across binarized age groups. Meta-analysis was conducted using a Mantel-Haenszel fixed-effects model. The outcomes presented include generalized ETV success rates across all 12 studies. Age-specific individual data was measured with odds ratios, with a pooled statistic measured using the Mantel-Haenszel test. Overall, 2294 studies were identified in this search, of which 12 were selected for inclusion in this systematic review. Of these, 3 studies were utilized for age-specific meta-analyses. Preliminary synthesis of ETV clinical outcomes across all 12 studies revealed a success rate of 60.2%. Additionally, meta-analysis revealed that iNPH patients younger than or equal to 65 years of age were significantly more likely to respond successfully to ETV intervention. Heterogeneity was inconsequential in this analysis.
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