All issues > Volume 31(8); 1988

Original Article

J Korean Pediatr Soc. 1988;31(8):1014-1020. Published online August 31, 1988.

Evaluation of Pulmonary and Systemic Blood Flow by Doppler Echocardiography in Pediatric Congenital Heart Disease.

Jae Hong Park¹, Chun Dong Kim¹, Jin Gon Jun¹

¹Department of Peditrics, College of Medicine, Youngnam University, Taegu, Korea

Received: January 25, 1988;  Accepted: February 29, 1988.

Abstract

This study was designed to assess the accuracy of pulmonary (Qp) and systemic blood flow (Qs) and the ratio of pulmonary to systemic blood flow (Qp/Qs) measured by non-invasive range-gated pulsed Doppler echocardiography. Thirty five children with congenital heart disease, aged 4 months to 15 years, admitted for cardiac operation to this hospital, were studied. Cardiac outputs were measured by 2-dimensional range-gated pulsed Doppler echocardiography simultaneously with Fick method during cardiac catheterization. High correlations were found between the estimates of Qp (r=0.80, y=1.10x=2.93, p<0.001), Qs (r= 0.95, y=0.92x+2.20, p< 0.001) and Qp/Qs ratio (r=0.86, y=1.22x+0.40, p< 0.001) by Doppler and Fick
method
. The results indicate that cardiac output and Qp/Qs ratio of the patients with congenital heart disease can be relatively accurately measured by non-invasive range-gated pulsed Doppler echocar- diography.

Keywords :Doppler echocardiography, Congenital heart disease, Cardiac output