Journal of the Korean Pediatric Society 1990;33(11):1533-1539.
Published online November 30, 1990.
Echocardiographic Evaluation of Sequential Change of Cardiac Function in Normal Neonates.
Ji In Park, Chul Ha Kim, Byoung Hoon Yoo
Department of Pediatrics, College of Medicine, Chung Ang University, Seoul, Korea
심초음파도를 이용한 정상 신생아 심장기능의 시간적 변화
박지인, 김철하, 유병훈
중앙대학교 의과대학 소아과학교실
Received: 22 June 1990   • Accepted: 19 September 1990
Abstract
Echocardigraphy was done on the first and the second day of life in 23 normal full term newborns to evaluate the sequential change of cardiac function of the normal neonates. The results were as follows. 1) On the first day of life, all of the measurements of diastolic filling except peak A velocity were significantly different when the right and left ventricle were compared. For the right, compared with left ventricle, peak E velocity, peak E/A ratio, E/total area, E/A area ratio, 1/3 area fraction were each significantly lower, whereas A/total area was significantly higher. 2) On the second day of life, comparison of right with left ventricle demonstrated that the right ventricle had significantly lower value for E/total area, E/A area ratio, and peak E/A ratio, but significantly higher value for peak A velocity. A/total area, peak E velocity, and 1/3 area fraction were not significantly different in two ventricles. 3) For sequential analysis of mitral valve, the most of the measurements of left ventricular diastolic filling except peak E velocity and peak A velocity were significantly different. Comparing day 1 and day 2 of life, E/total area, E/A area ratio, peak E/A ratio, and 1/3 area fraction were significantly lower on the first day of life, and A/total area was significantly lower on the second day of life. 4) For sequential analysis of tricuspid valve, peak A velocity was not different significantly but peak E velocity, E/total area, E/A area ratio, peak E/A, 1/3 area fraction were significantly higher and A/total area was significantly lower on the second day of life. 5) Right ventricular systolic time interval was significantly lower on the second day than the first day of life, but left ventricular systolic time interval was no sugnificant difference between day 1 and 2. On the first day of life, STI was not different in two ventricles. But on the second day of life, right ventricular STI was significantly lower than that of left ventricle. 6) Heart rate and shortening fraction were not significantly different between the first day and the second day of life.
Key Words: Echocardiography, Normal neontes, Cardiac function




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