Impact of Ultra-early Coiling on Clinical Outcome after Aneurysmal Subarachnoid Hemorrhage in Elderly Patients

Abstract

The incidence of aneurysmal subarachnoid hemorrhage is increasing in the elderly as life expectancy increases. The purpose of this study was to analyze whether ultra-early coiling of ruptured intracranial aneurysms improves clinical outcomes in elderly patients. Records of patients (aged ≥ 70 years) with aneurysmal subarachnoid hemorrhage treated with endovascular coiling were retrieved. Patients were classified into two groups: group A (patients coiled within 24 hours of subarachnoid hemorrhage) and group B (patients coiled ≥24 hours after subarachnoid hemorrhage). For each group, patient demographics, World Federation of Neurological Surgeons clinical grade, Fisher computed tomographic grade, aneurysm characteristics, and clinical outcomes were recorded. Outcomes were measured using the Modified Rankin Scale at 6 months. Fifty-six patients were coiled within 24 hours of subarachnoid hemorrhage (group A) and 40 patients at ≥24 hours after subarachnoid hemorrhage (group B). Groups A and B had similar clinical and angiographic characteristics. Clinical outcomes showed that a total of 87.5% of patient (49 of 56) in group A were independent (Modified Rankin Scale score 0-2) compared with 70.0% of patients (28 of 40) in group B (P = .034). In multivariate logistic regression analysis, ultra-early coiling (odds ratio, 3.860; 95% confidence interval, 1.125-13.249; P = .032) proved to be an independent predictor of better clinical outcome (Modified Rankin Scale score 0-2). Ultra-early (<24 hours after subarachnoid hemorrhage) coiling of ruptured aneurysms was marginally associated with improved clinical outcomes compared to coiling at ≥24 hours in elderly patients. Larger, prospective studies are required to adequately assess outcome differences between these two groups.