• Neurosurgery · Jul 2023

    Cisternal Score: A Radiographic Score to Predict Ventriculoperitoneal Shunt Requirement in Aneurysmal Subarachnoid Hemorrhage.

    • Aiden Meyer, Elyse Forman, Scott Moody, Christoph Stretz, Nicholas S Potter, Thanujaa Subramaniam, Ilayda Top, Linda C Wendell, Bradford B Thompson, Michael E Reznik, Karen L Furie, and Ali Mahta.
    • Brown University, Providence, Rhode Island, USA.
    • Neurosurgery. 2023 Jul 1; 93 (1): 758375-83.

    BackgroundPersistent hydrocephalus requiring a ventriculoperitoneal shunt (VPS) can complicate the management of aneurysmal subarachnoid hemorrhage (aSAH). Identification of high-risk patients may guide external ventricular drain management.ObjectiveTo identify early radiographic predictors for persistent hydrocephalus requiring VPS placement.MethodsIn a 2-center retrospective study, we compared radiographic features on admission noncontrast head computed tomography scans of patients with aSAH requiring a VPS to those who did not, at 2 referral academic centers from 2016 through 2021. We quantified blood clot thickness in the basal cisterns including interpeduncular, ambient, crural, prepontine, interhemispheric cisterns, and bilateral Sylvian fissures. We then created the cisternal score (CISCO) using features that were significantly different between groups.ResultsWe included 229 survivors (mean age 55.6 years [SD 13.1]; 63% female) of whom 50 (22%) required VPS. CISCO was greater in patients who required a VPS than those who did not (median 4, IQR 3-6 vs 2, IQR 1-4; P < .001). Higher CISCO was associated with higher odds of developing persistent hydrocephalus with VPS requirement (odds ratio 1.6 per point increase, 95% CI 1.34-1.9; P < .001), independent of age, Hunt and Hess grades, and modified GRAEB scores. CISCO had higher accuracy in predicting VPS requirement (area under the curve 0.75, 95% CI 0.68-0.82) compared with other predictors present on admission.ConclusionCisternal blood clot quantification on admission noncontrast head computed tomography scan is feasible and can be used in predicting persistent hydrocephalus with VPS requirement in patients with aSAH. Future prospective studies are recommended to further validate this tool.Copyright © Congress of Neurological Surgeons 2023. All rights reserved.

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