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The Examination of Spring Back Force in Frozen Elephant Trunk;Matsui-Kitamura Stent versus J Graft Open Stent Graft Kyouhei Ueno 1 , Hirofumi Midorikawa 1 , Rie Kageyama 1 , Ryuichi Taketomi 1 , Megumu Kanno 1 1Department of Cardiovascular Surgery, Southern Tohoku General Hospital Keyword: frozen elephant trunk (FET) , spring back force , Matsui-Kitamura stent , J Graft Open stent graft pp.643-649
Published Date 2020/9/1
DOI https://doi.org/10.15106/j_kyobu73_643
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Objectives:We examined the spring back force (SBF) in the frozen elephant trunk technique between patients receiving a Matsui-Kitamura stent (M group) or a J Graft Open Stent Graft (J group).

Methods:There were 11 cases in the M group and 10 cases in the J group. For all cases, we performed computed tomography (CT) scan and measured distal arch angle (DAA) and stent graft angle (SGA).

Results:There was no difference between groups with regards to patient characteristics. The insertion graft length[155±19 mm (M group) versus 138±17 mm (J group)]was significantly longer in the M group (p<0.05). In the J group, the SGA at 1 and 2 years postoperatively (105°±18.5° and 114°±19.1°, respectively) were significantly increased compared to that at 1 month postoperatively (99.9°±18.7°). In addition, the SGA in the J group was significantly larger than that in the M group during the postoperative period.

Conclusions:The SBF in the J group was thought to be significantly larger than that in the M group. SBF was thought to be associated with the stent frame characteristic.


© Nankodo Co., Ltd., 2020

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電子版ISSN 2432-9436 印刷版ISSN 0021-5252 南江堂

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