• World Neurosurg · May 2024

    COMBINED PREDICTIVE MODEL FOR ENDOSCOPIC THIRD VENTRICULOSTOMY SUCCESS IN ADULTS AND CHILDREN.

    • Iñigo L Sistiaga, Gregorio Catalán-Uribarrena, Silvia Pérez-Fernández, Alejandro Carrasco, Jone Iglesias, Ruiz de GopeguiEdurneEDepartment of Neurosurgery, University Hospital Cruces, Bilbao, Basque Country, Spain., and Iñigo Pomposo.
    • Department of Neurosurgery, University Hospital Cruces, Bilbao, Basque Country, Spain. Electronic address: ilsistiaga@gmail.com.
    • World Neurosurg. 2024 May 1; 185: e721e730e721-e730.

    BackgroundThe selection of patients in whom endoscopic third ventriculostomy (ETV) can be effective remains poorly defined. The ETV success score (ETVSS) and the presence of bowing of the third ventricle have been identified as independent factors for predicting success, each with limitations. The objective of this study is to elaborate a combined predictive model to predict ETV success in a mixed cohort of patients.MethodsDemographic, intraoperative, postoperative, and radiologic variables were analyzed in all ventriculostomies performed consecutively at a single institution from December 2004 to December 2022. Qualitative and quantitative measurements of preoperative, immediate, and late postoperative magnetic resonance imaging were conducted. Univariate analysis and logistic regression models were performed.Results118 ETVs were performed in the selected period. Of these procedures, 106 met the inclusion criteria. The overall success rate was 71.7%, with a median follow-up of 3.64 years (interquartile range, 1.06-5.62). The median age was 36.1 years (interquartile range, 11.7-53.5). 35.84% were children (median, 7.81 years). Among the 80 patients with third ventricle bowing, the success rate was 88.8% (P < 0.001). Larger third ventricle dimensions on preoperative mid-sagittal magnetic resonance imaging were associated with increased ETV success. The model with the best receiver operating characteristic curves, with an area under the curve of 0.918 (95% confidence interval, 0.856-0.979) includes sex, ETVSS, presence of complications, and third ventricle bowing.ConclusionsThe presence of bowing of the third ventricle is strongly associated with a higher ETV success rate. However, a combined predictive model that integrates it with the ETVSS is the most appropriate approach for selecting patients for ETV.Copyright © 2024 Elsevier Inc. All rights reserved.

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