Relation of Aortic Blood Flow to Cardiac Performance: Principle of a Noninvasive Method of Measuring Max (dP/dt)



Several attempts have been made to correlate the blood flow in the ascending aorta and the left ventricular contractility. Benett et al. (1974) measured the velocity of blood in the ascending aorta using a catheter-tip velocity probe in patients with ischemic heart disease. They reported that the maximum values of the velocity and the acceleration of blood could be correlated with the ejection fraction of the left ventricle, and their maximum values declined according to the severity of the disease. Sabbah et al. (1986) obtained similar results using a continuous-wave Doppler velocity meter.


Pulse Wave Velocity Aortic Pressure Left Ventricular Pressure Left Atrial Appendage Forward Wave 
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© Springer Japan 1989

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