Population
Chronically instrumented conscious dogs
Comparison
Hypoxia during a 41-min rebreathing period at… vs Different CO2 levels and intact vs sinoaortic…
Design
Preclinical
Follow-up
41-min rebreathing period
Authors
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Chemoreflex CO2 effects on hypoxic hemodynamics remain model-specific; leaves open translation to human ventilatory or vasopressor strategies.
In conscious dogs, elevated CO2 during hypoxia attenuates tachycardia and increases regional vasoconstriction via chemoreflex mechanisms, while augmenting coronary vasodilation locally.
Koehler et al. (1980) studied this question.
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