| Left Ventricular Cardiac Output in Term Newborn Infants: Changes Associated with Closure of Ductus Arteriosus. |
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Ho Jin Oh, You In Park, Chang Sung Son, Young Chang Tokgo, Pyung Hwa Choe |
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Department of Pediatrics, College of Medicine, Korea University, Seoul, Korea |
| 정상 신생아의 동맥관 폐쇄에 따른 좌심 심박출량
변동에 관한연구 |
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오호진, 박유인, 손창성, 독고영창, 최평화 |
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고려대학교 의과대학 소아과학교실 |
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Received: 10 July 1989 • Accepted: 10 July 1989 |
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| Abstract |
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We studied on leftventricular Cardiac output on the 25 normal newborn infants by using pulse
Doppler echocardiography, before & after closure of ductus arteriosus, we also made closing time of
ductus arteriousus by using pulsed & color Doppler echocardiography.
The results were as follows;
1) The closure of ductus arteriosus was noted before 24hr of age in 3 cases (12%), 48hr of age in 19
cases (76%), 72hrs of age in 24 cases (96%), 1 cas in 76hrs (100%) and mean age of closure was 33.2±
10.6hr after birth.
2) The left ventricular cardiac output was 861.0± 146.1 ml/min in time of patency of ductus
arterious and 819.6± 163.0 ml/min after closure. This result was statistically significant (p<0.05).
3) The left ventricular cardiac output corrected by body weight was 256.9±35.1 ml/min/kg in time
of patency of ductus arteriosus, and 240.2±38.1 ml/min/kg after closure.
This result was statistically significant(p< 0.01). |
| Key Words:
Ductus arteriosus, Left ventricular cardiac output |
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