| Autor: |
Snider, A. Rebecca, Stevenson, J. Geoffrey, French, James W., Rocchini, Albert P., Dick, Macdonald, Rosenthal, Amnon, Crowley, Dennis C., Beekman, Robert H., Peters, Jane |
| Zdroj: |
Journal of the American College of Cardiology; April 1986, Vol. 7 Issue: 4 p873-879, 7p |
| Abstrakt: |
To compare the ability of high pulse repetition frequency and continuous wave Doppler echocardiography to detect the peak velocity of a jet flow disturbance and to predict pressure gradients accurately, two groups of children with valvular or congenital heart disease were examined using both Doppler techniques. The use study group included 84 children or adolescents (aged 1 day to 19 years) who underwent examination in the echocardiography laboratory with both Doppler techniques in a randomized sequence. The peak velocity recorded with high pulse repetition frequency Doppler echocardiography was compared with the peak velocity recorded with the continuous wave technique. The accuracy study group included 41 children or adolescents (aged 1 day to 16 years) who underwent examination with both Doppler techniques at the time of cardiac catheterization. Doppler pressure gradients were calculated from the peak velocity using the simplified Bernoulli equation and were compared with peak instantaneous gradients and peak to peak gradients measured at catheterization. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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