Circulation, Vol 74, 323-329, Copyright © 1986 by American Heart Association
HN Sabbah, F Khaja, JF Brymer, TM McFarland, DE Albert, JE Snyder, S Goldstein and PD Stein
Peak aortic blood acceleration is recognized to be a sensitive index of
global left ventricular performance. In the present study peak acceleration
was assessed noninvasively in patients with a continuous- wave Doppler
velocity meter. Peak aortic blood velocity and peak blood acceleration were
measured by placing the ultrasonic transducer at the suprasternal notch.
Measurements were obtained in 36 patients undergoing diagnostic cardiac
catheterization. Peak velocity and acceleration were measured at rest just
before left ventriculography. In patients with ejection fractions greater
than 60%, peak acceleration was 19 +/- 5 m/sec/sec. In patients with
ejection fractions of 41% to 60%, peak acceleration was lower, at 12 +/- 2
m/sec/sec (p less than .001). In patients with ejection fractions of 40% or
less, peak acceleration (8 +/- 2 m/sec/sec) was markedly lower than in
patients with ejection fractions greater than 60% (p less than .001). Peak
acceleration showed a good linear correlation with ejection fraction (r =
.90), and a better power fit (r = .93). These results indicate that peak
acceleration, measured noninvasively with a continuous-wave Doppler
velocity meter, is a useful indicator of global left ventricular
performance.
ARTICLES
Noninvasive evaluation of left ventricular performance based on peak aortic blood acceleration measured with a continuous-wave Doppler velocity meter
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