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Complications and adverse events associated with Neuroform stent-assisted coiling of wide-neck intracranial aneurysms.
Neurological Research 2011 October
BACKGROUND: Successful experiences of the Neuroform stent-assisted coiling have been reported by many teams in endovascular neurosurgery centers throughout the world. However, most of the reported complications involved a limited number of patients.
OBJECTIVE: To systematically report the complications of Neuroform stent-assisted coiling of intracranial aneurysms and to tentatively assess the efficacy and safety of this method.
METHODS: A retrospective study of 232 consecutive patients with 239 wide-neck aneurysms treated with Neuroform stent-assisted coil embolization at our institution over a 6-year period was performed. Angiographic results and clinical outcome were evaluated. Cases with complications were analyzed.
RESULTS: Stenting was successful in 237 of 239 aneurysms. Favorable clinical outcome (modified Rankin score: 0-2) was observed in 88·3% of the patients. Procedure-related complications included thromboembolism (n = 13), intraprocedural rupture (n=8), coil protrusions (n=5), new mass effect (n=3), vessel injury (n=3), and stent dislodgement (n=2). Procedure-related morbidity and mortality were 4·2 and 1·3%, respectively. Non-procedural complications attributable to subarachnoid hemorrhage in 129 patients with ruptured aneurysms were symptomatic vasospasm (18·6%) and shunt-dependent hydrocephalus (6·9%). Angiography follow-up was obtained in 67·1% of the treated aneurysms. The overall recanalization rate was 14·5%. Delayed complications included in-stent stenosis (n=2) and penetrating artery occlusion (n=2) in follow-up period.
CONCLUSION: Neuroform sent-assisted coiling of intracranial aneurysm is a safe technique with relatively low recanalization rate. The main cause of morbidity and mortality is thromboembolism. Long-term effect on parent artery should be observed carefully.
OBJECTIVE: To systematically report the complications of Neuroform stent-assisted coiling of intracranial aneurysms and to tentatively assess the efficacy and safety of this method.
METHODS: A retrospective study of 232 consecutive patients with 239 wide-neck aneurysms treated with Neuroform stent-assisted coil embolization at our institution over a 6-year period was performed. Angiographic results and clinical outcome were evaluated. Cases with complications were analyzed.
RESULTS: Stenting was successful in 237 of 239 aneurysms. Favorable clinical outcome (modified Rankin score: 0-2) was observed in 88·3% of the patients. Procedure-related complications included thromboembolism (n = 13), intraprocedural rupture (n=8), coil protrusions (n=5), new mass effect (n=3), vessel injury (n=3), and stent dislodgement (n=2). Procedure-related morbidity and mortality were 4·2 and 1·3%, respectively. Non-procedural complications attributable to subarachnoid hemorrhage in 129 patients with ruptured aneurysms were symptomatic vasospasm (18·6%) and shunt-dependent hydrocephalus (6·9%). Angiography follow-up was obtained in 67·1% of the treated aneurysms. The overall recanalization rate was 14·5%. Delayed complications included in-stent stenosis (n=2) and penetrating artery occlusion (n=2) in follow-up period.
CONCLUSION: Neuroform sent-assisted coiling of intracranial aneurysm is a safe technique with relatively low recanalization rate. The main cause of morbidity and mortality is thromboembolism. Long-term effect on parent artery should be observed carefully.
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