• Patrick Schuss, Alexis Hadjiathanasiou, Valeri Borger, Christian Wispel, Hartmut Vatter, and Erdem Güresir.
• Department of Neurosurgery, University of Bonn, Bonn, Germany. Electronic address: patrick.schuss@ukb.uni-bonn.de.
• World Neurosurg. 2016 Jan 1; 85: 125-9.

ObjectivePatients presenting with poor-grade aneurysmal subarachnoid hemorrhage (SAH) have commonly been reported to have a poor prognosis; however, several reports suggest a favorable outcome in a subgroup of patients. We analyzed our database to identify factors determining functional outcome after poor-grade SAH.MethodsDuring the period 2004-2014, 248 patients with poor-grade SAH were treated in our institution. Poor-grade SAH was defined as World Federation of Neurological Surgeons grades IV-V on admission. Data including patient characteristics, treatment modality, radiologic features, and functional neurologic outcome were assessed and further analyzed. Outcome was assessed according to the modified Rankin Scale after 6 months and stratified into favorable (modified Rankin Scale score 0-2) versus unfavorable (modified Rankin Scale score 3-6). A multivariate analysis was performed to identify predictors of functional outcome.ResultsA favorable outcome was achieved in 24% of patients with poor-grade SAH. Patients with a favorable outcome were significantly younger (P = 0.005), harbored significantly smaller aneurysms (P = 0.004), and had a lower initial World Federation of Neurological Surgeons grade (P < 0.0001). An unfavorable outcome was significantly more frequent in patients with additional space-occupying hematoma compared with patients without additional space-occupying hematoma (P = 0.0009). On multivariate analysis, patient age, World Federation of Neurological Surgeons grade V, signs of cerebral herniation, aneurysm size, and presence of space-occupying hematoma were identified as significant predictors of unfavorable outcome in patients with poor-grade SAH.ConclusionsA favorable outcome was achieved in 24% of severely ill patients with poor-grade SAH. Therefore, treatment of patients with poor-grade SAH should not be omitted. Careful individualized decision making is necessary for each patient.Copyright © 2016 Elsevier Inc. All rights reserved.

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