Abstract
Objective:To investigate the clinical application of adjuvant coiling techniques in treating anterior-circulation wide-necked aneurysms.Methods:Over 4·5 years, 93 anterior-circulation wide-neck aneurysms in 81 patients were treated with different endovascular techniques: balloon-assisted, stent-assisted, and double-microcatheter coiling. Demographic, clinical, and angiographic data were reviewed retrospectively.Results:Of the 93 aneurysms, 45 were treated using stent, 28 using balloon, and 20 using double microcatheter. The proportion of ruptured aneurysms was significantly lower in the stent group (53·3%) than in the balloon (71·4%) or the double-microcatheter group (75%). Stent embolization was used for 61·1% of aneurysms located in the internal carotid artery, whereas aneurysms in the anterior communicating and middle cerebral arteries were mainly treated with balloon remodeling (42·9%) and double microcatheter (52·4%). The majority of aneurysms with neck ≧ 7 mm (87·5%) and all aneurysms with a dome/neck ratio < 1·0 (100%) were treated by stent-assisted coiling. For aneurysms with neck < 4 mm, the mean dome/neck ratio was 0·93 in the stent group, 1·08 in the balloon group, and 1·16 in the double-microcatheter group. Total occlusion was achieved in 21 cases (46·7%), with the rates for stent being significantly lower than for balloon (78·6%) or double microcatheter (75·0%). Clinical outcome was favorable in 73 cases (Glasgow Outcome Scale (GOS) 4–5) and fair in 4 (GOS 3), while 2 were severely disabled (GOS 2) and 2 others died (GOS 1).Conclusion:Double microcatheter was better for distal aneurysms with dome/neck ratio of 1·1–1·2, while stent was better for proximal aneurysms with an extremely wide neck (≧ 7 mm) and for loudspeaker-shaped aneurysms (dome/neck ratio < 1·0) with poor vessel condition. For emergency cases, both balloon remodeling and double microcatheter are better choices than stent.
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