Journal of the Korean Pediatric Society 1989;32(8):1045-1050.
Published online August 31, 1989.
Left Ventricular Cardiac Output in Term Newborn Infants: Changes Associated with Closure of Ductus Arteriosus.
Ho Jin Oh, You In Park, Chang Sung Son, Young Chang Tokgo, Pyung Hwa Choe
Department of Pediatrics, College of Medicine, Korea University, Seoul, Korea
정상 신생아의 동맥관 폐쇄에 따른 좌심 심박출량 변동에 관한연구
오호진, 박유인, 손창성, 독고영창, 최평화
고려대학교 의과대학 소아과학교실
Received: 10 July 1989   • Accepted: 10 July 1989
Abstract
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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