• Fusao Ikawa, Nobuaki Michihata, Koji Iihara, Yasuhiko Akiyama, Akio Morita, Kiyohide Fushimi, Hideo Yasunaga, and Kaoru Kurisu.
• Department of Neurosurgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan. Electronic address: fikawa-nsu@umin.ac.jp.
• World Neurosurg. 2020 Feb 1; 134: e55-e67.

ObjectiveThere has been no precise guide for treatment management of aneurysmal subarachnoid hemorrhage (aSAH) based on the patient's age and treatment method. This study clarifies each risk management for aSAH according to age and treatment method listed in a nationwide database.MethodsWe compared 2 groups of patients (nonelderly, <65 years; elderly, ≥65 years) who underwent surgical clipping or endovascular coiling and were registered in a nationwide database in Japan from 2010 to 2015. The odds ratio (OR) and 95% confidence interval (CI) of each risk factor were calculated through multivariate logistic regression analysis for poor outcome according to a modified Rankin Scale score >2 at discharge for each group.ResultsIn all groups, the risk factors for poor outcome were older age, male sex, neurologic grade on admission, diabetes mellitus, and use of anticoagulation drugs. Inverse risk factors were a high-volume hospital, academic hospital, hypertension, and use of an antiplatelet drug (OR, 0.63-0.81; 95% CI, 0.56-0.88). Chronic heart disease was also a risk factor, but use of a statin drug (OR, 0.85-0.87; 95% CI, 0.76-0.97) and location other than on the anterior communicating artery (OR, 0.74-0.80; 95% CI, 0.67-0.91) were inverse risks in both the elderly and the endovascular coiling groups.ConclusionsManagement for patients with aneurysmal subarachnoid hemorrhage was recommended in high-volume and academic institutes with the administration of antiplatelet drugs and consideration of several risk factors. Elderly patients undergoing endovascular coiling might be better given a statin drug, and patients with chronic heart failure or an anterior communicating artery aneurysm should be treated more carefully.Copyright © 2019. Published by Elsevier Inc.

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