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A Simple Signal Processor for a Respiratory Rate Monitor

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2 Author(s)
Cooley, Wils L. ; Medical Systems Engineering Laboratory, Carnegie-Mellon University, Pittsburgh, Pa. 15213. ; Moser, Kenneth M.

Although respiratory rate is a desirable patient parameter to monitor, signals from a spontaneously breathing patient are so irregular that reliable counts have been difficult. This short communication describes a circuit that processes the signal produced by a respiratory transducer (in our case an impedance pneumograph), and provides a countable output to a digital rate monitor. It is relatively simple, but embodies complex decision criteria in identifying respiratory activity.

Published in:

Biomedical Engineering, IEEE Transactions on  (Volume:BME-20 ,  Issue: 4 )

Date of Publication:

July 1973

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