Why the study?
Does alpha-adrenergic coronary vasoconstriction maintain uniform transmural blood flow distribution during exercise in dogs?
Population
Dogs with surgically constructed carotid artery loops and splenectomy
Comparison
Alpha-receptor blockade with phenoxybenzamine… vs Myocardial region with intact alpha-receptors
Design
Preclinical
Authors
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Does not inform clinical practice; leaves open whether alpha-adrenergic vasoconstriction preserves transmural flow uniformity during exercise in humans.
Does alpha-adrenergic coronary vasoconstriction maintain uniform transmural blood flow distribution during exercise in dogs?
Alpha-adrenergic coronary vasoconstriction helps maintain a uniform transmural distribution of myocardial blood flow during exercise, despite limiting average transmural flow.
Huang et al. (1988) studied this question.
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