Interpretation of the HJ interval of the normal ballistocardiogram based on the principle of conservation of momentum and aortic ultrasonic Doppler velocity measurements during left ventricular ejection
- 1 August 1988
- journal article
- research article
- Published by Oxford University Press (OUP) in Cardiovascular Research
- Vol. 22 (8), 571-574
- https://doi.org/10.1093/cvr/22.8.571
Abstract
The principle of conservation of momentum and the observation that blood acceleration in the ascending aorta is approximately constant during ventricular ejection was applied to develop a new interpretation of the HI and IJ intervals of the normal ballistocardiogram. The results indicate that the acceleration (A), velocity (V), and displacement (D) of the ballistocardiogram in the HI and IJ phases may be expresed by a set of equations which, when evaluated numerically, give theoretical acceleration, velocity, and displacement curves. The theoretical A, V, and D curves corresponded closely to those observed on the normal ballistocardiogram record during the HJ interval.Keywords
This publication has 2 references indexed in Scilit:
- Simultaneous Doppler blood velocity measurements from aorta and radial artery in normal human subjectsCardiovascular Research, 1985
- Comparison of methods of recording and analysis of Doppler blood velocity signals in normal subjectsJapanese Journal of Clinical Oncology, 1982