Xianli Lv1, Yupeng Zhang2, Weijian Jiang3. 1. Department of Neurosurgery, Beijing Tsinghua Changgung Hospital, Tsinghua University, Beijing, China; New Era Stroke Care and Research Institute, The PLA Rocket Force General Hospital, Beijing, China. 2. Beijing Neurosurgical Institute and Beijing Tiantan Hospital, Capital Medical University, Beijing, China. 3. New Era Stroke Care and Research Institute, The PLA Rocket Force General Hospital, Beijing, China. Electronic address: cjr.jiangweijian@vip.163.com.
Abstract
BACKGROUND: Although the Woven EndoBridge (WEB [Sequent Medical, Aliso Viejo, California, USA]) is a highly innovative technique for the endovascular treatment of wide-necked bifurcation aneurysms (WNBAs), there are no studies available comparing this technique with surgical results or other endovascular results of stent-assisted coiling or balloon-assisted coiling for WNBAs. The purpose of this study was to assess complications, complete occlusion rate, and morbidity and mortality of the WEB in WNBA treatment. METHODS: Published literature citing embolization results for WNBAs using the WEB was reviewed. A systematic review was performed to evaluate the complications, complete occlusion rate, and morbidity and mortality. RESULTS: We identified 19 studies, including 935 patients. The most frequent aneurysm locations were the bifurcation of the middle cerebral artery (MCA) (42.8%), the anterior communicating artery (23%), and the basilar bifurcation (20.8%). The technical success rate of the WEB was 97% (95% confidence interval [CI], 96%-98%). The thromboembolic complication rate was 8% (95% CI, 6%-11%). The thromboembolic complication rate was 10% (95% CI, 7%-13%) in cases before 2013, which was higher than in cases after 2013 (6%; 95% CI, 4%-9%; P = 0.045). MCA bifurcation aneurysm has a higher thromboembolic complication rate than posterior circulation aneurysm. The overall bleeding complication rate of the WEB was 2% (95% CI, 1%-3%). The adequate occlusion rate was 81% (95% CI, 76%-85%). Morbidity during follow-up was 3% (95% CI, 1%-4%) (I2 = 30.4%), and mortality was 2% (95% CI, 1%-3%). CONCLUSIONS: Adequate aneurysm occlusion was found in 81% of WEB cases with low morbidity and mortality.
BACKGROUND: Although the Woven EndoBridge (WEB [Sequent Medical, Aliso Viejo, California, USA]) is a highly innovative technique for the endovascular treatment of wide-necked bifurcation aneurysms (WNBAs), there are no studies available comparing this technique with surgical results or other endovascular results of stent-assisted coiling or balloon-assisted coiling for WNBAs. The purpose of this study was to assess complications, complete occlusion rate, and morbidity and mortality of the WEB in WNBA treatment. METHODS: Published literature citing embolization results for WNBAs using the WEB was reviewed. A systematic review was performed to evaluate the complications, complete occlusion rate, and morbidity and mortality. RESULTS: We identified 19 studies, including 935 patients. The most frequent aneurysm locations were the bifurcation of the middle cerebral artery (MCA) (42.8%), the anterior communicating artery (23%), and the basilar bifurcation (20.8%). The technical success rate of the WEB was 97% (95% confidence interval [CI], 96%-98%). The thromboembolic complication rate was 8% (95% CI, 6%-11%). The thromboembolic complication rate was 10% (95% CI, 7%-13%) in cases before 2013, which was higher than in cases after 2013 (6%; 95% CI, 4%-9%; P = 0.045). MCA bifurcation aneurysm has a higher thromboembolic complication rate than posterior circulation aneurysm. The overall bleeding complication rate of the WEB was 2% (95% CI, 1%-3%). The adequate occlusion rate was 81% (95% CI, 76%-85%). Morbidity during follow-up was 3% (95% CI, 1%-4%) (I2 = 30.4%), and mortality was 2% (95% CI, 1%-3%). CONCLUSIONS: Adequate aneurysm occlusion was found in 81% of WEB cases with low morbidity and mortality.
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