Measurement of respiratory rate from the photoplethysmogram in chest clinic patients

被引：38

作者：

Clifton D. ^{[1
]}

Douglas G.J. ^{[1
]}

Addison P.S. ^{[2
]}

Watson J.N. ^{[1
]}

机构：

[1] CardioDigital Ltd, Elvingston Science Centre, Glasdmuir

[2] Department of Respiratory Medicine, Aberdeen Royal Infirmary

来源：

Journal of Clinical Monitoring and Computing | 2007年 / 21卷 / 01期

基金：

英国惠康基金;

关键词：

Photoplethysmogram; Respiratory rate; Wavelet transforms;

D O I：

10.1007/s10877-006-9059-3

中图分类号：

学科分类号：

摘要：

Objective: We studied the application of our algorithm for the robust extraction of respiratory information from the pulse oximeter signal acquired from a selection of patients attending the chest clinic. Methods: Photoplethysmograms were obtained from 16 individuals: 13 patients with various conditions in the respiratory ward and three healthy subjects. Wavelet transforms were generated from which respiratory information was extracted to obtain a measure of respiratory rate. This measured rate was compared with the respiratory rate determined by one of a variety of other means (a digital end tidal CO2 signal, the output from a non-invasive ventilation device, or a switch actuated by the patient or observer.) Results: Respiratory rates varied from 6.2 to 35.8 breaths per minute (bpm). The oximeter rate determined through our method matched the marker rate obtained for all patients to within 1 bpm. Conclusion: The technique allows the measurement of respiratory rate directly from the photoplethysmogram of a pulse oximeter, and leads the way for development of a simple non-invasive combined respiration and saturation monitor useful for patients with all forms of breathlessness. © Springer Science+Business Media, Inc. 2006.

引用

页码：55 / 61

页数：6

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