Key result
A novel contact-free capacitance respiration monitor effectively captured respiratory movements, achieving an average spectral correlation of 0.95 to the gold standard in a volunteer.
Why the study?
Does a novel contact-free capacitance respiration monitor accurately measure breathing rates compared to Respiratory Inductance Plethysmography?
Does a novel contact-free capacitance respiration monitor accurately measure breathing rates compared to Respiratory Inductance Plethysmography?
Answers are grounded in this paper and cite their sources.
A novel contact-free capacitance-based respiration monitor demonstrated high correlation with gold-standard respiratory inductance plethysmography in prototype testing.
The development of a contact-free respiration monitor has a broad range of clinical applications in the home and hospital setting. Current approaches suffer from a variety of problems including unreliability, low sensitivity, and high cost. This work describes a novel approach to contact-free respiration monitoring that addresses these shortcomings by employing a highly sensitive capacitance sensor to detect variations in capacitive coupling caused by breathing. A prototype system consisting of a synthetic-metallic pad, sensor electronics, and iPhone interface was built and its performance compared experimentally to the gold standard technique (Respiratory Inductance Plethysmography) on both a healthy volunteer and SimMan robotic mannequin. The prototype sensor effectively captured respiratory movements over breathing rates of 5-55 bpm; achieving an average spectral correlation of 0.88 (CI: 0.86-0.90) and 0.95 (CI: 0.95-0.96) to the gold standard using the SimMan and healthy volunteer respectively.
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Hart et al. (2010) studied Respiration monitoring (n=1). Contact-free respiration monitor (capacitance sensor) vs. Respiratory Inductance Plethysmography was evaluated on Spectral correlation to gold standard over breathing rates of 5-55 bpm (average spectral correlation 0.95, 95% CI 0.95-0.96). A novel contact-free capacitance respiration monitor effectively captured respiratory movements, achieving an average spectral correlation of 0.95 to the gold standard in a volunteer.
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