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The authors evaluated complications in a cohort of 45 patients with acutely ruptured aneurysms and 47 with unruptured aneurysms. All were treated with stent-assisted coiling. The permanent complication rate in ruptured aneurysms was 11*. Five of 45 patients had an early rebleed from the treated aneurysm after 3–45 days, and in 4 this rebleed was fatal. Thromboembolic complications occurred in 2 patients with unruptured aneurysms. The authors conclude that the complication rate in ruptured aneurysms was 10 times higher than in unruptured aneurysms.