Development and preliminary validation of heart rate and breathing rate detection using a passive, ballistocardiography-based sleep monitoring system

Authors:
David C. Mack;James T. Patrie;Paul M. Suratt;Robin A. Felder;Majd Alwan
Affiliations:
Home Guardian LLC and University of Virginia, Charlottesville, VA;University of Virginia, Charlottesville, VA;University of Virginia, Charlottesville, VA;University of Virginia, Charlottesville, VA;Center for Aging Services Technologies, American Association of Homes and Services for the Aging, Washington, DC and University of Virginia, Charlottesville, VA
Venue:
IEEE Transactions on Information Technology in Biomedicine
Year:
2009

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Abstract

Techniques such as ballistocardiography (BCG) that can provide noninvasive long-term physiological monitoring have gained interest due to a growing recognition of adverse effects from poor sleep and sleep disorders. The noninvasive analysis of physiological signals (NAPS) system is a BCG-based monitoring system developed tomeasure heart rate, breathing rate, and musculoskeletal movement that shows promise as a general sleep analysis tool. Overnight sleep studies were conducted on 40 healthy subjects during a clinical trial at the University of Virginia. The NAPS system's measures of heart rate and breathing rate were compared to ECG, pulse oximetry, and respiratory inductance plethysmography (RIP). The subjects were split into a training dataset and a validation dataset, maintaining similar demographics in each set. The NAPS system accurately detected heart rate, averaged over the prescribed 30-s epochs, to within less than 2.72 beats per minute of ECG, and accurately detected breathing rate, averaged over the same epochs, to within 2.10 breaths per minute of RIP bands used in polysomnography.