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Side branch occlusion and stenosis during percutaneous transluminal coronary angioplasty Kazuyuki Sakata 1 , Tsuneo Hoshino 1 , Shoichi Yokoyama 1 , Shin-ichi Takayama 1 , Noriko Mori 1 , Hiroshi Yoshida 1 , Tomoyuki Iwase 1 , Tetuji Shingu 1 , Tsuneo Kaburagi 1 1Department of Cardiology, Shizuoka General Hospital pp.1335-1341
Published Date 1986/12/15
DOI https://doi.org/10.11477/mf.1404204979

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  • Abstract
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To assess the incidence and significance of side branch injury (SBI) including side branch occlusion and stenosis during percutaneous transluminal coronary angioplasty (PTCA), 44 coronary arteries with 83 side branches were analyzed from 39 patients treated by PTCA. We investigated the relationship between SBI and several factors; branching portion of the side branch, balloon diameter and pressure, and anatomical characteristics of the target lesion.

SBI occurred in 16 (19%) of 83 side brancheo following PTCA (7 occlusion, 9 stenosis). SBI occurred in 14 of 35 side branches originating from the target lesion and in 2 of 48 side branches originating from the vicinity of it. The incidence of SBI was significantly higher in the former than in the latter (p<0.01). The target lesion with SBI tended to be diffuse and eccentric and to have tortuosity and calcification. In addition, the target lesion with SBI was considered to be tight because luminal enlargement of target lesion with SBI was smaller than that without SBI (p< 0. 01). There was no significant relationship bet-ween SBI and balloon diameter and pressure. No patients with side branch stenosis had an elevation of CPK and ECG changes after PTCA. Two of 4 patients with angina pectoris, who had side branch occlusion, had myocardial infarction after PTCA. We must be cautious of the target lesion with side branch during PTCA.


Copyright © 1986, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1200 印刷版ISSN 0452-3458 医学書院

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