Premium
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.