Wide frequency range force ballistocardiogram; its correlation with cardiovascular dynamics.
TLDR
The ballistocardiograms of young normal subjects as recorded with a wide frequency range technic are described and an analysis of these components in terms of known cardiovascular events strongly suggests that they have definite dynamic significance.Abstract:
The ballistocardiograms of young normal subjects as recorded with a wide frequency range technic are described. These records contain high frequency forces not previously described. An analysis of these components in terms of known cardiovascular events strongly suggests that they have definite dynamic significance. In addition, these correlations offer evidence as to the genesis of some forces in the ballistocardiogram.read more
Citations
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Journal ArticleDOI
Theory and Developments in an Unobtrusive Cardiovascular System Representation: Ballistocardiography
TL;DR: It is pertinent to revise all the information available on the ballistocardiogram’s physiological interpretation, its typical waveform information, its features and distortions, as well as the state of the art in device implementations.
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Ballistocardiogram: Mechanism and Potential for Unobtrusive Cardiovascular Health Monitoring
Chang-Sei Kim,Stephanie L. Ober,M. Sean McMurtry,Barry A. Finegan,Omer T. Inan,Ramakrishna Mukkamala,Jin-Oh Hahn +6 more
TL;DR: The validated model reveals that the principal mechanism for the genesis of the BCG waves is blood pressure gradients in the ascending and descending aorta, which may be exploited to allow BCG to realize its potential for unobtrusive monitoring and diagnosis of cardiovascular health and disease.
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General index for the assessment of cardiac function
TL;DR: Values for “normalized velocity” obtained from direct or indirect methods, give reliable guides to myocardial function and allow for meaningful comparisons among patients are suggested.
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Assessment of myocardial contractility in children and young adults from ventricular pressure recordings.
Israel Mirsky,Israel Mirsky,Israel Mirsky,R. Curtis Ellison,R. Curtis Ellison,R. Curtis Ellison,Paul G. Hugenholtz,Paul G. Hugenholtz,Paul G. Hugenholtz +8 more
TL;DR: This study suggests that reliable guides to myocardial contractility can readily be obtained from high fidelity pressure recordings alone.
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Impedance cardiography: Pulsatile blood flow and the biophysical and electrodynamic basis for the stroke volume equations
TL;DR: The new method conceptualizes VEPT as the intrathoracic blood volume (ITBV, mL), which is approximated through allometric equivalents of body mass (aMb) in contrast to the classical two-element parallel conduction model, the new method comprises a three-compartment model, which incorporates excess extra-vascular lung water (EVLW) as a component of both Z0 and VEPt.
References
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Time Relationship of Dynamic Events in the Cardiac Chambers, Pulmonary Artery and Aorta in Man
TL;DR: The results obtained by permutation of simultaneous pressure recordings confirm the classical observations made in dogs.
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Ballistocardiography with elimination of the influence of the vibration properties of the body
TL;DR: A ballistocardiograph is described which is designed to give a record of the force acting upon the "total body mass" and typical and calibrated records are shown and discussed.
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Acceleration Ballistocardiography: Design, Construction, and Application of a New Instrument
Elliott Rv,Packard Rg,Kyrazis Dt +2 more
TL;DR: The construction of a linear accelerometer for use in ballistocardiography is presented including the relationship between acceleration, displacement, and velocity.
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Dynamic Comparison of Current Ballistocardiographic Methods
S. A. Talbot,W. K. Harrison +1 more
TL;DR: The nature and magnitude of force artefacts in the ballistocardiogram (BCG) arising from coupling the body to ground was discussed, and the size of these errors and their bearing on multilateral recording were discussed.