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Continous Wave Dopple Echocardiographic Prediction of Pulmonary Arterial Hupertension in Congenital Heart Disease.

Journal of the Korean Pediatric Society 1989;32(7):951-957.
Published online July 31, 1989.
Continous Wave Dopple Echocardiographic Prediction of Pulmonary Arterial Hupertension in Congenital Heart Disease.
Jung Suk Lee, Mi Jung Ko, Yeon Gyun Oh, Hyang Suk Yoon
Department of Pediatrics. Wonkwang University, School of Medicine, I Ri, Korea
선천성 심질환에서 연속파형 Doppler 심에코도를 이용한 폐동맥고혈압의 추정
이정석, 고미정, 오연균, 윤향석
원광대학교 의과대학 소아과학교실
Received: 27 December 1988   • Accepted: 30 December 1988
Abstract
This study determines the accuracy of Doppler echocardiography for predicting the presence of pulmonary artery hypertension from Doppler pulmonary artery velocity traces. The patient group included 26 patients with congenital cardiac disease who had undergone catheterization. Doppler measurements of acceleration time(AT), right ventricular ejection time (RVET), and AT/ RVET were compared with pulmonary artery pressure (PAP) and mean pulmonary artery pressure (m-PAP). We devided the patients in 3 groups; PAP 30 mmHg, PAP 31 〜 59 mmHg,PAP 60 mmHg. The results were as follows; 1) The ratio of Doppler AT and AT/RVET in the group of PAP below 60 mmHg showed overlap- ping. 2) In the group of PAP ^60 mmHg, all of them showed that AT was below 0.10 sec and AT/RVET was below 0.27 sec. According to the raise of PAP, the ratio of Doppler AT and AT/RVET showed significant decrease (P < 0.001), RVET also showed somewhat decrease but there was no significant difference. 3) The ratio of Doppler AT and AT/RVET showed relative high correlation (r=-0.70) with PAP measured by cardiac catheterization in all group. 4) In the group of PAP ^30 mmHg, n = 18, the ratio of Doppler AT and AT/RVET showed relative high correlation with PAP measured by cardiac catheterization (r = -0.79, -0.80). In our experience, the use of this technique permitted the noninvasive estimation of the pulmonary artery pressure.
Key Words: Continuous wave Doppler echocardiography, Acceleration time, Pulmonary artery hypertension


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