Rapid Assessment of Cardiac Contractility on a Home Bathroom Scale

Analyzing systolic time intervals-specifically the preejection-period (PEP)-is widely accepted as one of the few methods for the noninvasive assessment of cardiac contractility. In this paper, we investigated the ballistocardiogram (BCG) as a way to noninvasively measure myocardial contractility whe...

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Bibliographic Details
Published in:IEEE journal of biomedical and health informatics 2011-11, Vol.15 (6), p.864-869
Main Authors: Etemadi, M., Inan, O. T., Giovangrandi, L., Kovacs, G. T. A.
Format: Article
Language:English
Subjects:
Adult
Ballistocardiography (BCG)
Ballistocardiography - methods
Biomedical measurements
Biomedical monitoring
Blood flow monitoring
Blood Pressure Monitoring, Ambulatory - methods
Body Weights and Measures - methods
Cardiography, Impedance - methods
Cardiology
contractility
Electrocardiography
Electrocardiography - methods
Electrodes
Female
Heart
home monitoring
Humans
Male
Myocardial Contraction - physiology
noninvasive cardiac monitoring
Signal Processing, Computer-Assisted
Time Factors
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Summary:Analyzing systolic time intervals-specifically the preejection-period (PEP)-is widely accepted as one of the few methods for the noninvasive assessment of cardiac contractility. In this paper, we investigated the ballistocardiogram (BCG) as a way to noninvasively measure myocardial contractility when combined with the ECG. Specifically, we derived a parameter from the BCG and ECG that we hypothesized would be highly correlated to PEP. This is the time delay between the J-wave peak of the BCG and the R-wave of the ECG, which we refer to as the RJ interval. The RJ interval was correlated to PEP (r 2 = 0.86) for 2126 heart beats across ten subjects, with a y-intercept of 138 ms and slope of 1.05. This suggests that the RJ interval can be reliably used as a noninvasive assessment of cardiac contractility.
ISSN:1089-7771
2168-2194
1558-0032
2168-2208
DOI:10.1109/TITB.2011.2161998