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Estimation of Outflow Tract Pressure Gradients by Continuous Wave Doppler in Children
Author(s) -
BJÖRKHEM G. E.,
LUNDSTRÖM N.R.
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.tb10391.x
Subject(s) - doppler effect , pressure gradient , medicine , doppler echocardiography , ventricular outflow tract , outflow , cardiology , cardiac catheterization , hemodynamics , continuous wave , blood pressure , optics , mechanics , diastole , physics , meteorology , laser , astronomy
. Continuous wave Doppler echocardiography was used to estimate pressure gradients in 27 children with right or left ventricular outflow tract obstruction. Tbe pressure gradients predicted by Doppler were compared to peak‐to‐peak and instantaneous gradients measured at cardiac catheterization, When the Doppler study was performed the pressure gradient obtained at catheterization was not known to the examiner. A correlation coeffiaent of 0.76 was found for the comparison between the Doppler predicted gradient and the peak‐to‐peak gradient and 0.78 for the comparison with the instantaneous pressure gradient. Clinically significant obstructions could be reliably separated from insignificant obstructions by the Doppler technique.