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Transient Left Ventricular Outflow Obstruction Associated with Extended Anteroseptal Akinesis:Two case reports Kanji Iga 1 , Chisato Izumi 1 , Atsushi Nakano 1 , Yuji Sakanoue 1 , Shouji Kitaguchi 1 , Yoshihiro Himura 1 , Hiromitsu Gen 1 , Takashi Konishi 1 1Department of Cardiology, Tenri Hospital Keyword: 左室瘤 , S状中隔 , ドプラ心エコー図 , left ventricular aneurysm , sigmoid septum , Doppler echocardiography pp.503-506
Published Date 1997/5/15
DOI https://doi.org/10.11477/mf.1404901482
  • Abstract
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We encountered two cases of transient left ventricular outflow (LVO) obstruction presumably caused by anter. oseptal akinesis. The velocities of LVO were 4 m/sec and 3.5 m/sec respectively associated with systolic ante- rior movement of the mitral valve (SAM). One week later when systolic function normalized, the velocities decreased to 0.7 m/sec and 1.2 m respectively with dis-appearance of systolic murmur and SAM. The angles between the aorta and the interventricular septum were 78 degrees and 110 degrees respectively in the acute phase but 84 degrees and 135 degrees one week later. We believe that, in these cases, steep angulation between the aorta and the septum caused by anteroseptal akinesis in addition to a hyperkinetic upper septum resulted in transient LVO obstruction.


Copyright © 1997, 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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