Unique Effect of Nebivolol on Coronary Hemodynamics: It’s All a Matter of Flow
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The concept of coronary flow reserve (CFR) was introduced in the 1960s by Drs. JD Coffman and DE Gregg who tested the reactive hyperemia characteristics of the coronary circulation . Subsequently, the innovative studies of Dr. L Gould have paved the way to better understand coronary flow physiology. Dr. Gould examined the relationship between the anatomic severity of a coronary stenosis and its flow resistance as well as reserve [2, 3]. Based on these research efforts technology has been developed to define the effect of a coronary stenosis on the distal arterial flow response. CFR measures the capacity of the two-component system of coronary artery and supplied vascular bed to achieve maximal blood flow in response to a given hyperemic stimuli. With specialized angioplasty guidewires and induction of maximal coronary blood flow, CFR is often used in research and clinical settings to determine the physiological significance of various coronary stenoses.
The effect of beta-blockers...
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