ISSN 1016-5169 | E-ISSN 1308-4488
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Prediction of Pulmonary Artery Pressures by the Ratio of Pulmonary to Systemic Pressures Derived from Pulsed Doppler Echocardiography [Turk Kardiyol Dern Ars]
Turk Kardiyol Dern Ars. 1991; 19(2): 117-122

Prediction of Pulmonary Artery Pressures by the Ratio of Pulmonary to Systemic Pressures Derived from Pulsed Doppler Echocardiography

Oktay SANCAKTAR1, Ali Rıza KAZAZOĞLU1, Tuğrul OKAY1, Serdar AKSÖYEK1, Mehmet ÖZDEMİR1

We used a new method for the estimation of the ratio of pulmonary to systemic pressures by pulsed-wave Doppler echocardiography. Sixty-six patients undergoing cardiac catheterization, aged 7-62 years, were studied. These patients' right and left ventricular outflow velocity were examined by pulsed Doppler technique. Preejection period (PEP), ejection time (ET) and mean acceleration to peak velocity (ACCm) were measured on each wave form. The expression: F= (PEPxACCm) / ET for right and left ventricular outflows was calculated from the Doppler wave forms generated in each outflow which are the records of the ejection flow dynamics of each ventricle. The quotient of (F for the right outflow) / (F for the left outflow) was used to express the degree of pressure dependent variability between each subject's right and left ventricular outflow tracings. The ratio of the right to left ventricular outflow F indexes was almost identical to the ratio of systolic and mean pulmonary to systemic pressures (r=0.97±0.05; r=0.96±0.07). The product of the ratio of right and left ventricular outflow F indexes and arm systolic pressure gave an accurate estimate of systolic pulmonary pressure. It is concluded that this method can be successfully used for the noninvasive assessment of pulmonary pressures.

Keywords: Pulmonary artery pressure, Doppler echocardiography

How to cite this article
Oktay SANCAKTAR, Ali Rıza KAZAZOĞLU, Tuğrul OKAY, Serdar AKSÖYEK, Mehmet ÖZDEMİR. Prediction of Pulmonary Artery Pressures by the Ratio of Pulmonary to Systemic Pressures Derived from Pulsed Doppler Echocardiography. Turk Kardiyol Dern Ars. 1991; 19(2): 117-122
Manuscript Language: Turkish


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