EFFECT OF CHANGES IN AIRWAY PRESSURE ON BREATHING PATTERN IN CONSCIOUS DOGS | Zendy

Davies A. | Zendy; Nadal J. A. | Zendy; Weinmann Gail | Zendy

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EFFECT OF CHANGES IN AIRWAY PRESSURE ON BREATHING PATTERN IN CONSCIOUS DOGS

Author(s) -

Davies A.,

Nadal J. A.,

Weinmann Gail

Publication year - 1984

Publication title -

quarterly journal of experimental physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.925

H-Index - 101

eISSN - 1469-445X

pISSN - 0144-8757

DOI - 10.1113/expphysiol.1984.sp002775

Subject(s) - reflex , anesthesia , medicine , tidal volume , duration (music) , airway , breathing , vagus nerve , cardiology , respiratory system , physics , stimulation , acoustics

The effect of brief (400 ms) or sustained (several breaths) application of positive or negative intrapulmonary air pressure was studied in three exercising conscious dogs. Changes in inspiratory duration ( T 1 ), expiratory duration ( T E ) and tidal volume ( V T ) were measured with the dogs' vagus nerves at body temperature and cooled to a temperature which abolished the Hering‐Breuer inflation reflex (7 °C). Comparison of these results with those obtained with anaesthetized dogs leads us to suggest that there exists in conscious dogs a reflex inspiratory promoting drive.

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