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Assessment of Left Ventricular Shape and Wall Motion by Two-dimensional Echocardiographic Study in Children with Secundum Atrial Septal Defect Takashi Kosuda 1,3 , Katsuhiko Sone 1 , Makoto Shinohara 1 , Yasunori Okada 1 , Toshihiro Kobayashi 2 , Tomio Kobayashi 2 1Department of Pediatrics, Gunma Children's Medical Center 2Department of Pediatrics, Gunma University School of Medicine Keyword: 心房中隔欠損症 , 超音波断層心エコー法 , 左心機能 , secundum atrial septal defect , echocardiography , left ventricular function pp.1191-1195
Published Date 1995/12/15
DOI https://doi.org/10.11477/mf.1404901162
  • Abstract
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We performed two-dimensional echocardiography to evaluate the left ventricular (LV) function and the regional LV wall motion in 19 children with secundum atrial septal defect (ASD). These were classified according to the degree of left-to-right shunt into small (flow ratio <2.0 : group A1), large (flow ratio≧2.0 : group A2). We also evaluated that of 18 cases with Kawasaki disease showing normal findings in the coro-nary angiogram (Group N).

Short axis study revealed the end-diastolic area of LV and the ejection fraction of LV to be slightly de-creased in groups A1 and A2, while group N was nor-mal. The left ventricular wall motions in both groups Al and A2 were lower especially around the septal and lateral regions. But the LV wall motions in those groups around the anterior and posterior regions were better than those of group N. In patients of groups A1 and A2, the LV cavity was distorted at the end-diastole and became circular at end-systole. Because of this characteristic change during systole, the end-diastolic area of LIT and the ejection fraction of LV were slightly lower in ASD groups than in those in group N. This study suggests that abnormal regional LV wall motion in patients with right ventricular volume overload is a result of a change in the shape of the left ventricle.


Copyright © 1995, 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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