American Journal of Neuroradiology 26:2542-2549, November-December 2005
© 2005 American Society of Neuroradiology
INTERVENTIONAL
Late Rebleeding of Ruptured Intracranial Aneurysms Treated with Detachable Coils
a Department of Radiology, St. Elisabeth Ziekenhuis, Tilburg, the Netherlands
b Department of Neurosurgery, St. Elisabeth Ziekenhuis, Tilburg, the Netherlands
c Department of Neurology, St. Elisabeth Ziekenhuis, Tilburg, the Netherlands
Address correspondence to M. Sluzewski, MD, PhD, Department of Radiology, St Elisabeth Ziekenhuis, Hilvarenbeekseweg 60, 5022 GC Tilburg, the Netherlands
BACKGROUND AND PURPOSE: The purpose of this study was to assess the incidence of late rebleeding of ruptured intracranial aneurysms treated with detachable coils.
PATIENTS AND METHODS: A clinical follow-up study was conducted in 393 consecutive patients with a ruptured aneurysm treated with detachable coils between January 1995 and January 2003. Late rebleeding was defined as recurrent hemorrhage from a coiled aneurysm >1 month after coiling. One patient was lost to follow-up. Total clinical follow-up of the 392 patients who were coiled for ruptured cerebral aneurysms was 18,708 months (1559 patient years; median, 48 months; mean, 47.7 months; range, 0–120 months).
RESULTS: Four patients suffered late rebleeding from the coiled aneurysm at 8, 12, 30, and 40 months after coiling, respectively. Two of these patients died. Another patient died of probable rebleeding 4 months after coiling. The incidence of late rebleeding was 1.27% (5/393) and mortality of late rebleeding was 0.76% (3/393). The annual late rebleeding rate was 0.32%, and the annual mortality rate from late rebleeding was 0.19%. During the follow-up period, 53 coiled aneurysms in 53 patients (13%) were additionally treated: 35 aneurysms (8.9%) were additionally treated with coils, 16 aneurysms (4.1%) were additionally clipped, and 2 aneurysms (0.5%) were additionally treated with parent vessel balloon occlusion.
CONCLUSION: The late rebleeding rate after coiling of ruptured cerebral aneurysms is very low. Follow-up of patients with a coiled aneurysm is mandatory to identify aneurysms that need additional treatment after reopening.
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