[en] We analyzed the outcome of patients over 80 years old with subarachnoid hemorrhage (SAH). We conducted a retrospectively evaluated the medical records and imaging studies of 49 patients treated with clipping, coiling or conservative therapy between January 2005 and December 2008. The patients were graded on admission, according to the World Federation of Neurological Surgeons (WFNS) grade, and modified Rankin Scale (mRS) at discharge. Forty-nine patients ranged from 80 to 94 (average 85.8). Seven patients were men. The WFNS grade on admission revealed that 14 patients were Grade 1, 8 Grade II, 4 Grade III, 6 Grade IV and 17 Grade V. Fourteen patients underwent surgical clipping, and 10 patients underwent coil embolization. Twenty-five patients recrived conservative therapy. The overall results evaluated as mRS at discharge were: 3 patients (6.1%) were mRS 0, 4 (8.2%) mRS 1, 4 (8.2%) mRS 2, 4 (8.2%) mRS 3, 10 (20.4%) mRS 4, 13 (26.5%) mRS 5, 12 (24.5%) mRS 6. While only 1 patient (4.2%) in the conservative group had a favorable outcome (mRS 0-3), 13 patients in the operative group (54.2%) had favorable outcomes: 8 patients (80.0%) who underwent coil embolization and 5 patients (35.7%) who underwent surgical clipping. Unfavorable outcomes were caused mainly by primary brain damage and symptomatic vasospasm. In elderly SAH patients, radical treatment of ruptured aneurysm is important to achieve a favorable outcome. (author)