Abstract
Studies of the effects of therapy on bronchomotor activity in man are complicated by the fact that airways resistance (Raw) may be markedly influenced by changes in lung volume (VL). Specific airways conductance (SGaw), derived from either the ratio of conductance (1/Raw) to thoracic gas volume, or the slope of a plot of conductance against volume, may be used as an index of bronchomotor tone. We have adapted the forced airflow oscillation method for measuring resistance to determine SGaw in patients when the body Plethysmographic method is unsuitable (e.g. during anaesthesia or IPPV) or unavailable.
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References
W. A. Briscoe and A. B. Dubois, The relationship between airway resistance, airway conductance and lung volume in subjects of different age and body size, J. Clin. Invest. 37:1279 (1958).
H. Watt, R. C. Zimmerman, I. R. Peters and W. J. Sullivan, Direct write out of total respiratory resistance, J. Appl. Physiology. 28:675 (1970).
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© 1982 Plenum Press, New York
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Lehane, J.R., Jordan, C., Royston, J.P., Jones, J.G. (1982). A New Method for Estimating Changes in Bronchomotor Tone Using the Apple Microcomputer. In: Prakash, O., Spence, A.A., Payne, J.P., Jonson, B., Nair, S. (eds) Computers in Critical Care and Pulmonary Medicine. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-6704-2_14
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DOI: https://doi.org/10.1007/978-1-4615-6704-2_14
Publisher Name: Springer, Boston, MA
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