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Chest, Vol 91, 361-365, Copyright © 1987 by American College of Chest Physicians

ARTICLES

Noninvasive prediction of pulmonary hypertension in chronic obstructive pulmonary disease by Doppler echocardiography

B Marchandise, B De Bruyne, L Delaunois and R Kremer

Thirty-six patients with chronic obstructive pulmonary disease (COPD) were studied by pulsed Doppler echocardiography. In 32 of the 36 patients, adequate Doppler signals were obtained in the pulmonary arterial trunk and correlated with right cardiac hemodynamics. The studied group included 26 patients with mean pulmonary arterial pressure (MPAP) greater than 20 mm Hg at rest (group A, with pulmonary hypertension) and six patients with MPAP of 20 mm Hg or less (group B, without pulmonary hypertension). A control group (group C) consisted of 12 subjects with normal hemodynamic data and pulmonary function. Analysis of Doppler data included flow velocity curve pattern, presence of a negative presystolic velocity, right ventricular pre-ejection period (RVPEP) and ejection period (RVEP), time between onset and peak of pulmonary velocity (time to peak velocity, TPV) and derived ratios of TPV/RVPEP and TPV/RVEP. In patients with pulmonary hypertension, the Doppler flow velocity curve in the pulmonary trunk showed a rapid acceleration and an early deceleration. The mean value for TPV was 78 +/- 12 msec in group A, 115 +/- 11 msec in group B, and 127 +/- 10 msec in group C. In patients with COPD, significant correlations were observed between TPV and log10 MPAP (r = -0.77; SEE = 0.07) and between TPV and log10 total pulmonary resistances (r = -0.84; SEE = 0.05). Accordingly, pulsed Doppler echocardiography may be a useful tool to predict pulmonary hypertension due to chronic pulmonary disease.


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Copyright © 1987 by the American College of Chest Physicians.