TY - JOUR
T1 - Noninvasive estimation of pulmonary arterial wedge pressure with Doppler transmitral flow velocity pattern in patients with known heart disease
AU - Vanoverschelde, Jean Louis J.
AU - Robert, Annie R.
AU - Gerbaux, Alain
AU - Michel, Xavier
AU - Hanet, Claude
AU - Wijns, William
PY - 1995/2/15
Y1 - 1995/2/15
N2 - Pulmonary arterial wedge pressure (PAWP) is an important marker of cardiac function. Regrettably, it requires catheterization, which can occasionally result in serious complications. A noninvasive method of estimating PAWP would thus be helpful. Recent studies have indicated that the Doppler transmitral flow velocity pattern was strongly dependent on preload and could provide an estimate of PAWP. This study was therefore designed to evaluate the relation between Doppler transmitral flow velocity indexes and measured PAWP in 91 patients (learning group: 73 men, mean age 57 ± 13 years) with ischemic heart disease (n = 41), dilated (n = 29) or hypertrophic cardiomyopathy (n = 4), or aortic stenosis (n = 17). Multiple regression analysis was used to derive an equation for estimation of PAWP, which was subsequently tested in a separate group of 33 patients (testing group: 28 men, mean aqe 58 ± 12 years) with similar cardiac conditions. PAWP ranged from 4 to 48 mm Hg in the learning group and from 7 to 40 mm Hg in the testing group. In the learning group, PAWP correlated with the E/A ratio (r = 0.95), atrial filling fraction (r = -0.80), peak E velocity (r = 0.79), isovolumic relaxation period (r = -0.75), and deceleration time (r = -0.61). In the learning group PAWP was best predicted as PAWP = 18.4 + [17.1·In(E/A ratio)]. This equation allowed prediction of PAWP within 3 mm Hg of the measured value in 24 of 33 patients (73%) in the testing group. In 8 additional patients, the equation also accurately predicted the changes in PAWP induced by volume loading or intravenous nitrates (r = 0.98). Data indicate that in patients with known heart disease, the noninvasive assessment of transmitral flow velocity pattern by Doppler echocardiography can predict PAWP with a clinically meaningful degree of accuracy.
AB - Pulmonary arterial wedge pressure (PAWP) is an important marker of cardiac function. Regrettably, it requires catheterization, which can occasionally result in serious complications. A noninvasive method of estimating PAWP would thus be helpful. Recent studies have indicated that the Doppler transmitral flow velocity pattern was strongly dependent on preload and could provide an estimate of PAWP. This study was therefore designed to evaluate the relation between Doppler transmitral flow velocity indexes and measured PAWP in 91 patients (learning group: 73 men, mean age 57 ± 13 years) with ischemic heart disease (n = 41), dilated (n = 29) or hypertrophic cardiomyopathy (n = 4), or aortic stenosis (n = 17). Multiple regression analysis was used to derive an equation for estimation of PAWP, which was subsequently tested in a separate group of 33 patients (testing group: 28 men, mean aqe 58 ± 12 years) with similar cardiac conditions. PAWP ranged from 4 to 48 mm Hg in the learning group and from 7 to 40 mm Hg in the testing group. In the learning group, PAWP correlated with the E/A ratio (r = 0.95), atrial filling fraction (r = -0.80), peak E velocity (r = 0.79), isovolumic relaxation period (r = -0.75), and deceleration time (r = -0.61). In the learning group PAWP was best predicted as PAWP = 18.4 + [17.1·In(E/A ratio)]. This equation allowed prediction of PAWP within 3 mm Hg of the measured value in 24 of 33 patients (73%) in the testing group. In 8 additional patients, the equation also accurately predicted the changes in PAWP induced by volume loading or intravenous nitrates (r = 0.98). Data indicate that in patients with known heart disease, the noninvasive assessment of transmitral flow velocity pattern by Doppler echocardiography can predict PAWP with a clinically meaningful degree of accuracy.
UR - http://www.scopus.com/inward/record.url?scp=0028955577&partnerID=8YFLogxK
U2 - 10.1016/S0002-9149(99)80559-1
DO - 10.1016/S0002-9149(99)80559-1
M3 - Article
C2 - 7856533
AN - SCOPUS:0028955577
SN - 0002-9149
VL - 75
SP - 383
EP - 389
JO - The American journal of cardiology
JF - The American journal of cardiology
IS - 5-6
ER -