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Original Article
Noninvasive Estimation of Systemic and Pulmonary Blood flow and the Ratio of Pulmonary to Systemic flow by Two-Dimensional Doppler Echocardigraphy.
Woo Tack Kim, Ki Ho Kim, Haeng Mi Kim, Snag Bum Lee
Clin Exp Pediatr. 1988;31(7):881-891.   Published online July 31, 1988
This study was designed to assess the accuracy and problems of noninvasively measuring right and left cardiac output at various sampling sites by range gated pursed Doppler echocardiography. High correlations were found between Fick-and Doppler-derived measurements of systemic and pulmonary flow as well as the pulmonary to systemic flow ratio in 21 patients undergoing cardiac catheterization (systemic flow [n=21] r=0.81; plulmonary flow [n=29], r=0.78;Qp/Qs...
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