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Physiological measurement · May 1993
Comparative StudyExperimental evaluation of two new sensors for respiratory rate monitoring.
- M Vegfors, H Ugnell, B Hök, P A Oberg, and C Lennmarken.
- Department of Anaesthesiology Linköping University Hospital, Sweden.
- Physiol Meas. 1993 May 1;14(2):171-81.
AbstractVisual observation was chosen as the reference method for measuring the respiratory rate in ten healthy volunteers. The new fibre-optic and acoustic sensors were simultaneously compared with capnography and transthoracic impedance plethysmography during normoventilation in the respiratory rate range of 6-24 breaths per minute and at a fixed respiratory rate of 13 breaths per minute. In addition a simulation of central apnoea was performed. All the measurements were recorded on an analogue tape recorder and a strip-chart recorder and analysed off line. The analyses of the recordings were performed by a person who was unable to see the monitoring systems. There was no discrepancy in the results of these methods. Each of the methods responded rapidly to an apnoeic event. The new fibre-optic and acoustic sensors correlate well with more traditional methods such as capnography and transthoracic impedance plethysmography for respiratory rate monitoring.
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