All issues > Volume 32(7); 1989

Original Article

J Korean Pediatr Soc. 1989;32(7):943-950. Published online July 31, 1989.

Comparisons of the Ratio of Pulmonary to Systemic Blood Flow(Qp/Qs) Determined by Non-invasive Doppler Echocardiography and Radionuclide-Angiocardiography in Congenital Heart Diseases.

Jung Suk Lee¹, Chul Wo Park¹, Hyang Suk Yoon¹

¹Department of Pediatrics, Wonkwang University, College of Medicine, I Ri, Korea

Received: November 15, 1988;  Accepted: December 27, 1988.

Abstract

This study was desinged to assess the accuracy of the ratio of pulmonary to systemic blood flow (Qp/Qs) measured by non-invasive continuous wave (CW) Doppler echocardiography comparing with other non-invasive Radionu- clide Angiocardiography (RNA) and invasive Fick method. Seventeen children with congenital heart disease, aged 14 months to 15 years, admitted for cardiac opention to this hospital, were studied. High correlations were found between the estimates of Qp/Qs (r=0.89, y=0.96x4-0.03, SEE=0.13) by Doppler and Fick method. With comparison between RNA and Fick method in nine patients, lower correlations (r=0.62, y=1.62x—0.42, SEE=0.77) were found. The results indicate that Qp/Qs ratio of the patients with congenital heart disease can be relatively accurately measured by non-invasive CW Doppler echocardiography.

Keywords :Ratio of pulmonary to systemic blood flow, Doppler echocardiography, Radionuclide-Angiocardiography