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- Abstract 文献概要
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- 参考文献 Reference
Point
・PipelineTM FlexとFREDTMで適応血管が異なる.脳底動脈,前大脳動脈および中大脳動脈近位部はFREDTMのみ適応となる.動脈瘤最大径はいずれも5 mm以上である.
・両端フレアエンドを有するFREDTMは展開操作が容易であるが,全長展開後の修正はPipelineTM Flexと比較するとやや難しい.
・硬膜内動脈瘤でのコイル併用は勧められるが,完全に遅発性破裂を予防できるわけではない.
More than 2000 patients with large aneurysms have been treated with PipelineTM Flex since approval in 2015. The indication of PipelineTM Flex has expanded according to the PREMIER trial. Moreover, FREDTM has been approved in 2020 with a wider indication compared to that of PipelineTM. Aneurysms with 5 mm or larger of the maximum diameter in the internal carotid artery(ICA)and vertebral artery(VA)are currently indicated for PipelineTM. Moreover, the indications for FREDTM include the proximal anterior cerebral, proximal middle cerebral artery, and basilar artery in addition to the ICA and VA. The use in the acute stage of subarachnoid hemorrhage remains contraindicated for both.
One should note several specific technical tips for these flow diverters. FREDTM can be deployed more easily compared to PipelineTM due to the large caliper filament and the flare ends. However, FREDTM is generally resistant to balloon angioplasty after it is fully deployed, most probably because the anchored flare ends disable foreshortening of FREDTM. Concomitant use of coiling may be recommended for intradural aneurysms to potentially minimize the risk of delayed rupture.

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