| Echocardiographic Evaluation of Sequential Change of Cardiac Function in Normal Neonates. |
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Ji In Park, Chul Ha Kim, Byoung Hoon Yoo |
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Department of Pediatrics, College of Medicine, Chung Ang University, Seoul, Korea |
| 심초음파도를 이용한 정상 신생아
심장기능의 시간적 변화 |
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박지인, 김철하, 유병훈 |
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중앙대학교 의과대학 소아과학교실 |
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Received: 22 June 1990 • Accepted: 19 September 1990 |
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| Abstract |
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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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