Nongeometric Doppler stroke volume determination is limited by aortic size

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      Noninvasive stroke volume determination by Doppler echocardiography has traditionally required estimation both of mean flow rate during ejection by Doppler methods and of flow area by cross-sectional or M-mode echocardiography.1 Spodick and Koito2 recently reported a method for estimating stroke volume from Doppler echocardiographic tracings alone, which they term non-geometric because no area measurement is used. Instead, mean left ventricular ejection rate is estimated from mean Doppler velocity and is then multiplied by Doppler ejection time to yield stroke volume. We reasoned that if there is a physiologic relation between ejection rate and Doppler velocity, truly independent of aortic size, the nongeometric method should also accurately estimate stroke volume in infants and children, who have a wide range of aortic size.
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        • Goldberg SJ
        • Allen HD
        • Marx GR
        • Donnerstein RL
        Flow computation.
        in: Doppler Echocardiography. 2nd ed. Lea & Febiger, Philadelphia1988: 153-186
        • Spodick DH
        • Koito H
        Nongeometric Doppler stroke volume determination.
        Am J Cardiol. 1989; 63: 883-884
        • Roman MJ
        • Devereux RB
        • Kramer-Fox R
        • O'Loughlin JO
        Two-dimensional echocardiographic aortic root dimensions in normal children and adults.
        Am J Cardiol. 1989; 64: 507-512
        • Donnerstein RL
        • Marx GR
        Simplified method for estimation of Doppler cardiac output in great vessels.
        Am J Cardiol. 1988; 62: 155-156
        • Koito H
        • Spodick DH
        Optimal Doppler measurement of left ventricular ejection time.
        Am J Cardiol. 1989; 63: 257-259
        • Koito H
        • Spodick DH
        Relation of left ventricular ejectional flow velocity to volume ejection rate.
        Am J Cardiol. 1989; 63: 256-257
        • Scholz DG
        • Kiktzman DW
        • Hagen PT
        • Ilstrup DM
        • Edwards WD
        Age-related changes in normal human hearts during the first 10 decades of life. Part I (growth): a quantitative anatomic study of 200 specimens from subjects from birth to 19 years old.
        in: 4th ed. Mayo Clin Proc. 63. 1988: 126-136