| Autor: |
Maeda, Masahiko, Yokota, Mitsuhiro, Iwase, Masatsugu, Miyahara, Takashi, Hayashi, Hiroshi, Sotobata, Iwao |
| Zdroj: |
Journal of the American College of Cardiology; January 1989, Vol. 13 Issue: 1 p76-83, 8p |
| Abstrakt: |
To estimate the accuracy of cardiac output measured by continuous wave Doppler echocardiography from the suprasternal notch and the utility of this method for evaluating left ventricular function during dynamic exercise, simultaneous thermodilution and Doppler cardiac output were measured in 34 patients with coronary artery disease during multistage ergometer exercise in the supine position. Cardiac output was measured at rest and during each stage of exercise. Twenty-five of the 34 patients whose thermodilution curves were adequate for analysis were studied during exercise. The correlation coefficient for the two methods was 0.85 at rest and 0.84 during exercise. Differences between the two methods were not significant at rest but were significant during exercise, with the thermodilution method giving the higher values. Underestimation by the Doppler method is probably due to technical problems and changes in aortic diameter during exercise. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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