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Sci Rep. 2016 Aug 9;6:31297. doi: 10.1038/srep31297.

Ballistocardiogram: Mechanism and Potential for Unobtrusive Cardiovascular Health Monitoring.

Author information

1
Department of Mechanical Engineering, University of Maryland, College Park, MD, USA.
2
Department of Medicine, University of Alberta, Edmonton, AB, Canada.
3
Department of Anesthesiology and Pain Medicine, University of Alberta, Edmonton, AB, Canada.
4
School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, USA.
5
Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI, USA.

Abstract

For more than a century, it has been known that the body recoils each time the heart ejects blood into the arteries. These subtle cardiogenic body movements have been measured with increasingly convenient ballistocardiography (BCG) instruments over the years. A typical BCG measurement shows several waves, most notably the "I", "J", and "K" waves. However, the mechanism for the genesis of these waves has remained elusive. We formulated a simple mathematical model of the BCG waveform. We showed that the model could predict the BCG waves as well as physiologic timings and amplitudes of the major waves. 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. This new mechanistic insight may be exploited to allow BCG to realize its potential for unobtrusive monitoring and diagnosis of cardiovascular health and disease.

PMID:
27503664
PMCID:
PMC4977514
DOI:
10.1038/srep31297
[Indexed for MEDLINE]
Free PMC Article

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