Why the study?
Does sequential β1- and β2-adrenergic blockade alter regional myocardial tissue blood flow in a feline model of acute ischemia?
Population
20 cats with ischemic regions of the left ventricle produced by coronary artery occlusion
Comparison
Sequential administration of a β1-blocking agent… vs Reverse sequence of administration
Design
Preclinical
Authors
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β1 effects predominate in feline ischemia models; leaves open translation to human acute coronary syndromes.
Does sequential β1- and β2-adrenergic blockade alter regional myocardial tissue blood flow in a feline model of acute ischemia?
In a feline model of acute ischemia, β1-blockade primarily drives hemodynamic changes and matches coronary flow to ventricular function, whereas β2-blockade does not cause coronary vasoconstriction.
Grong et al. (1983) studied this question.
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