Objective: Coiling of small (≤3 mm) cerebral aneurysms can be technically challenging and is associated with increased procedural-related morbidity and mortality. The authors report the clinical and radiological results following coiling of ruptured small cerebral aneurysms in a single-institution, and define the rates of intra-procedural rupture and thromboembolism.
Methods: A retrospective analysis was conducted on consecutive patients from 01/01/2008 to 31/12/2010 with subarachnoid haemorrhage (SAH) from ruptured cerebral aneurysms (≤3 mm) managed in a tertiary neurosurgical institution in the United Kingdom.
Results: Of the 108 patients identified, 72 patients (66.7%) underwent coil embolisation. A favourable outcome, defined as a Glasgow outcome score of 4-5, was achieved in 63 (87.5%) of these patients. Intra-procedural complications were observed in 11.1% (±7.3% 95% CI) of cases, wherein the rate of intra-procedural rupture was determined to be 8.3% (±6.4% 95% CI) and intra-procedural thromboembolism to be 2.8% (±3.8% 95% CI).
Conclusion: Although coil embolisation of small ruptured cerebral aneurysms is technically feasible and an efficacious means of treatment, it is associated with an increased rate of intra-procedural complications. This should be taken into account when embarking upon treatment of patients with ruptured small cerebral aneurysms.
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