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Anaesth Intensive Care · Feb 1993
Noninvasive monitoring of tidal volume with an extensometer: laboratory and clinical studies.
- J Brimacombe.
- Department of Anaesthesia and Intensive Care, Cairns Base Hospital, Queensland.
- Anaesth Intensive Care. 1993 Feb 1;21(1):62-6.
AbstractThe extensometer or "rubbery ruler" (RR) is a new torso transducer with potential application in the field of respiratory pattern analysis. This paper determines whether the RR can measure tidal volume over a clinically useful time frame following spirometric calibration. Laboratory testing identified no error or baseline drift during 774,000 controlled stretches. Clinical testing in a variety of patients demonstrated that 96.6% of derived spirometric values were contained within an error range of +15.2% to -16.9% of spirometrically measured tidal volume and that accuracy did not change over a period of one hour. These results are encouraging and suggest that this device merits further investigation.
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