[Reactions of the external respiration in waking dogs to hypercapnia].
The volume and temporal characteristics of lung ventilation were studied under conditions of progressing hypercapnia in 4 alert dogs. Similarity of ventilatory sensitivity for CO2 and of respiration patterns was revealed in all the dogs. The contribution of frequency component was negligible. The hypercapnic hyperpnoe was followed by a shortening of expiration duration along with unaltered (or increased) duration of inspiration.
D000818:Animals; D002245:Carbon Dioxide / Q000502:physiology; D004285:Dogs; D006935:Hypercapnia / Q000503:physiopathology*; D008176:Lung Volume Measurements; D010313:Partial Pressure; D012044:Regression Analysis; D012119:Respiration; D013997:Time Factors; D014851:Wakefulness / Q000502:physiology*
D002245:Carbon Dioxide
Reaktsii vneshnego dykhaniia bodrstvuiushchikh sobak na giperkapniiu.