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Estimation of Stroke Volume Using Doppler Echocardiography and Left Ventricular Echocardiographic Dimensions in Infants and Children
Author(s) -
CAIDAHL K.,
MELLANDER M.,
SABEL K.G.,
ERIKSSON B. O.
Publication year - 1986
Publication title -
acta pædiatrica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 115
eISSN - 1651-2227
pISSN - 0803-5253
DOI - 10.1111/j.1651-2227.1986.tb10397.x
Subject(s) - medicine , stroke volume , stroke (engine) , doppler echocardiography , cardiology , aortic root , limits of agreement , doppler effect , cardiac output , nuclear medicine , hemodynamics , aorta , ejection fraction , blood pressure , heart failure , mechanical engineering , physics , diastole , astronomy , engineering
. To evaluate the accuracy of noninvasive determination of stroke volume in infants and children, 28 patients (age range 4 weeks to 19 years) were studied. Stroke volume was calculated according to Teichholtz from M‐mode echocardiographic tracings of left ventricular dimensions in 8 subjects. Agreement with thermodilution performed within 60 min of echocardiography was good ( r =0.995, y =0.91 x +1.59, SEE=1.8 ml). Since stroke volume correlated to body size we corrected for (height) 3 . After this correction there was still good agreement to thennodilution ( r =0.88, y =1.29 x ‐7.13, SEE=7.1 ml/H 3 ). M‐mode echocardiography was then used as a reference method for evaluating two ditrerent Doppler methods in the remaining 20 subjects. Continuous wave Doppler stroke distance, calculated from the mean velocity, was combined with aortic root area (Method I), and stroke dstance calculated from maximum velocity was combined with the aortic interleaflet area (Method II). Good agreement was found with Method I ( r =0.95, y =l.01 x ‐0.14, SEE=8.1 ml) and Method II ( r =0.95, y =1.04 x ‐1.14, SEE=8.4 ml). However, when stroke volume was normalized for (height) 3 , Method I was found to be superior to Method II.