Variability in heart rate estimates from different pulse oximeters

Foo, J. A., Wilson, S. J., Williams, G. R., Dakin, C., Harris, M.-A. and Cooper, D. M. (2005). Variability in heart rate estimates from different pulse oximeters. In: Klaus-Peter Adlassnig and Marcello Bracale, Proceedings of the Third IASTED International Conference on Biomedical Engineering. 3rd IASTED International Conference on Biomedical Engineering, Innsbruck, Austria, (319-324). 16-18 February 2005.


Author Foo, J. A.
Wilson, S. J.
Williams, G. R.
Dakin, C.
Harris, M.-A.
Cooper, D. M.
Title of paper Variability in heart rate estimates from different pulse oximeters
Conference name 3rd IASTED International Conference on Biomedical Engineering
Conference location Innsbruck, Austria
Conference dates 16-18 February 2005
Proceedings title Proceedings of the Third IASTED International Conference on Biomedical Engineering
Place of Publication Calgary, Canada
Publisher ACTA Press
Publication Year 2005
Sub-type Fully published paper
ISBN 0-88986-476-4
Editor Klaus-Peter Adlassnig
Marcello Bracale
Start page 319
End page 324
Total pages 6
Collection year 2005
Language eng
Abstract/Summary Since its introduction, pulse oximetry has become a conventional clinical measure. Besides being arterial blood oxygen saturation (SpO2) measure, pulse oximeters can be used for other cardiovascular measurements, like heart rate (HR) estimations, derived from its photo plethysmographic (PPG) signals. The temporal coherence of the PPG signals and thereby HR estimates are heavily dependent on its minimal phase variability. A Masimo SET Rad-9TM, Novametrix Oxypleth and a custom designed PPG system were investigated for their relative phase variation. R-R intervals from electro-cardiogram (ECG) were recorded concurrently as reference. PPG signals obtained from the 3 systems were evaluated by comparing their respective beat-to-beat (B-B) intervals with the corresponding R-R estimates during a static test. For their relative B-B comparison to the ECG, Novametrix system differed 0.680.52% (p<0.05) and custom device 0.890.71% (p<0.05) while Masimo device 4.173.51% (p>0.05). Recent advanced signal processing approach is attractive with respect to the accuracy and noise immunity of the SpO2 measure. However, one consequence may be the variability it induces to the phase coherence of its PPG signal. Clinical interpretation of other measures such as HR may be compromised by these techniques(from publisher).
Subjects E1
291500 Biomedical Engineering
730200 Public Health
Keyword Data and signal acquisition
Photoplethysmography
Motion artefacts
Pulse oximetry
Heart rate variability
Q-Index Code E1

 
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Created: Thu, 23 Aug 2007, 20:47:25 EST