The tussometer: accuracy and reproducibility.

P Singh; G E Murty; R P Mahajan; D Knights; A R Aitkenhead

doi:10.1093/bja/73.2.145

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The tussometer: accuracy and reproducibility.

P Singh·G E Murty·R P Mahajan·D Knights·A R Aitkenhead

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Abstract

Tussometry is a new non-invasive technique for objectively assessing laryngeal function by analysis of the airflow waveform produced by a maximum effort voluntary cough manoeuvre. We describe the technique and present the calibration data. The tussometer has been calibrated for flows of up to 1100 litre min-1 using a flowmeter with a quoted accuracy of +/- 1.75%. The variables measured (cough peak flow rate (CPFR) and peak velocity time (PVT)) were found to be reproducible; the within-subject variability for CPFR was found to be 23.9% and for PVT 9%. There was no inter-observer variation. We found that the size of the mask used did not influence the readings obtained, providing an adequate seal was achieved.

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Calibration Cough Humans Larynx Male Masks Observer Variation Pulmonary Ventilation Reproducibility of Results Respiratory Function Tests Rheology Journal Article

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P Singh, G E Murty, R P Mahajan, D Knights, A R Aitkenhead. 1994. The tussometer: accuracy and reproducibility.. https://doi.org/10.1093/bja%2F73.2.145

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