Trends in Endovascular Treatment of Aneurysmal Subarachnoid Hemorrhages

Introduction: Aneurysmal subarachnoid hemorrhage (aSAH) accounts for 5% of all strokes; 30-day mortality is as high as 40%. We sought to evaluate outcomes of aSAH patients treated 2004-2014 by endovascular therapy (EVT), to demonstrate associated trends, and to evaluate angioplasty use for aSAH-related cerebral vasospasm. Methods: The Nationwide Inpatient Sample (NIS) database 2004-2014 was used to derive a study cohort using ICD-9 codes. Survey procedures were used to adjust for stratified cluster design of NIS. NIS trend weights were used to generate national estimates. Mortality during hospitalization and use of angioplasty for aSAH-induced cerebral vasospasm trends were evaluated with multivariate regression analysis. Results: We identified n = 10,822 (weighted n = 52,062) EVT-treated aSAH hospitalizations. Increasing years independently predicted decreased mortality (odds ratio [OR] 0.926, 95% confidence interval [CI] 0.905-0.948, p p = 0.0019] and age p = 0.0009]) after controlling for increasing age, Charlson comorbidity index, and external ventricular drain placement. Angioplasty rates were higher in age p Conclusion: It is notable that EVT for aSAH management will be an integral and increasingly useful tool for initial aneurysm management. Advances in procedural techniques, operator experience, and periprocedural management could be significant contributors of decreasing mortality and reducing the need for angioplasty for cerebral vasospasm in patients admitted with aSAH.
Intervent Neurol 2017;6:236-241

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