Why the study?
Do changes in carotid sinus pressure affect arterial pressure and heart rate differently in dogs with chronic A-V block compared to normal dogs?
Population
Anesthetized normal dogs and dogs with chronic complete A-V block
Comparison
Changes in carotid sinus pressure vs Normal dogs (controls)
Design
Preclinical
Authors
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Caution against clinical extrapolation from A-V block models; leaves open vagal buffering mechanisms for targeted research.
Do changes in carotid sinus pressure affect arterial pressure and heart rate differently in dogs with chronic A-V block compared to normal dogs?
Dogs with chronic A-V block exhibit enhanced reflex circulatory responses to changes in carotid sinus pressure, which may involve attenuation of vagal buffering influences.
DiSalvo et al. (1975) studied this question.
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