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. 1982 Feb;37(2):124-8.
doi: 10.1136/thx.37.2.124.

Factors influencing the bronchodilator effect of a deep inspiration in asthmatic patients with provoked bronchoconstriction

A Beaupré, J Orehek

Factors influencing the bronchodilator effect of a deep inspiration in asthmatic patients with provoked bronchoconstriction

A Beaupré et al. Thorax. 1982 Feb.

Abstract

We have studied 26 asthmatic patients in whom deep inspiration induced a transient but marked bronchodilatation when carbachol-induced bronchoconstriction was present. Changes in bronchial tone were assessed by specific airway resistance measurements. Bronchodilatation after a slow inspiration (eight subjects) or a 10-second breath-hold at total lung capacity (13 subjects) was significantly less than that observed after either a fast inspiration or no breath-holding period. The magnitude of the bronchodilatation induced by a fast inspiration without breath-holding was directly and significantly related to the magnitude of the carbachol-induced bronchoconstriction in five subjects.

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References

    1. J Appl Physiol. 1967 Oct;23(4):487-97 - PubMed
    1. J Appl Physiol. 1968 Sep;25(3):244-8 - PubMed
    1. Br J Surg. 1971 Mar;58(3):189-92 - PubMed
    1. Physiol Rev. 1973 Jan;53(1):159-227 - PubMed
    1. Ann N Y Acad Sci. 1974;221:103-14 - PubMed

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