| Physiological responses to spirometer load. | |
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MedLine Citation:
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PMID: 6176200 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A transient time-dependent increase in tidal volume (TV) and respiratory rate has been observed as a spirometric loading effect in experiments on 22 decerebrate cats. Respiration was recorded via the impedance pneumograph throughout the entire experiment while tidal volume was measured at intervals of 10-60 min on a spirometer. A total of 233 spirograms was recorded. The mean control tidal volume was 14 ml/kg, followed by an average increase of 30%, 43%, 51%, and 64% at 30, 60, 90, and 120 sec on the spirometer respectively. Spirometric respiratory rate also increased and as a result instantaneous minute volumes (MV) showed increases up to nearly 400% of control. Maximal effects occurred within 80 sec reflecting a sequential combination of reflex (via vagal afferents) and chemical (increased CO2) factors reaching a new equilibrium. We also noted a spirometric regularization of previously irregular or periodic (Biot's) breathing. It is apparent that the spirometer introduces small and graded perturbations into respiratory control systems. |
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Authors:
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R E Schuhmann; S K Coles; H E Hoff |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Archives internationales de physiologie et de biochimie Volume: 89 ISSN: 0003-9799 ISO Abbreviation: Arch. Int. Physiol. Biochim. Publication Date: 1981 Dec |
Date Detail:
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Created Date: 1982-06-24 Completed Date: 1982-06-24 Revised Date: 2003-11-14 |
Medline Journal Info:
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Nlm Unique ID: 0405355 Medline TA: Arch Int Physiol Biochim Country: BELGIUM |
Other Details:
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Languages: eng Pagination: 435-44 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Cats Decerebrate State / physiopathology Respiration* Spirometry* Tidal Volume Time Factors |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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