Results 191 to 200 of about 39,173 (234)
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Coronary Microcirculation and Angiogenesis
1999Abstract Because of its obvious importance in terms of delivery of blood and nutrients to the myocardium, there has been a long-standing interest in properties of the resistance circulation of the heart. Prior to the midl 980s, due to technical limitations, it was difficult to directly study coronary microvessels either in situ or in ...
Frank W Sellke, David G Harrison
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Coronary microcirculation: Physiology and mechanics
Fluid Dynamics Research, 2005Summary: The heart is unique among other organs in that coronary arterial flow is exclusively diastolic and venous outflow is systolic. That is, arterial blood flows into intramyocardial coronary vessels during diastole and the stored blood is squeezed out mostly to epicardial veins and partly to the proximal arteries during the subsequent systole ...
Matsumoto, Takeshi, Kajiya, Fumihiko
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1983
It is still standard teaching that coronary arteries are “end-arteries”, that is to say that each main coronary vessel has its own discrete territory of supply and that in the normal functioning heart such anastomoses as exist are without function.
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It is still standard teaching that coronary arteries are “end-arteries”, that is to say that each main coronary vessel has its own discrete territory of supply and that in the normal functioning heart such anastomoses as exist are without function.
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Adrenergic Vasomotion in the Coronary Microcirculation
1991The goal of this study was to determine the alpha-adrenergic receptor subtype(s) responsible for constriction at different microvascular levels in the coronary circulation. To accomplish these goals, the epicardial coronary microcirculation of intact beating hearts was viewed through an intravital microscope using stroboscopic epi-illumination.
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Why should we study the coronary microcirculation?
American Journal of Physiology-Heart and Circulatory Physiology, 2000the question we are posing to the readers is why should we study the microcirculation of the heart. First, let us define who are “we.” In this issue of the American Journal of Physiology: Heart and Circulatory Physiology, a collection of papers are included as part of a Special Call on “
SAMBUCETI G, L'ABBATE A, MARZILLI, MARIO
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Adaptation of the Coronary Microcirculation in Aging
Microcirculation, 2016AbstractAdvancing age will affect every individual and its impact on health deserves significant attention particularly as we address therapeutic possibilities to pathological conditions. The changes that occur in the coronary vasculature as a result of aging‐related senescence set the stage upon which CVD and ischemia can escalate.
Amanda J, LeBlanc, James B, Hoying
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Assessment of Coronary Microcirculation During Cardiac Catheterization
Current Pharmaceutical Design, 2018Functional tests used in the catheterization laboratory have emerged as a very important adjunctive tool to coronary angiography that can identify patients with myocardial blood flow impairment. Fractional Flow Reserve (FFR) measurement is highly recommended for detection of ischemia-related coronary lesion(s) when objective evidence of vessel ...
Sasko, Kedev, Ivan, Vasilev
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The coronary microcirculation in health and disease
Cardiology Clinics, 2004Apart from being the site of nutrient and gas exchange for the myocardium, the capillary bed is a dynamic participant in the regulation of coronary and myocardial blood flow. MBV also responds to changes in myocardial oxygen demand. Because MCE can be used to assess MBF and MBV in vivo, it can be used to provide unique insights into tissue perfusion.
Kevin, Wei, Sanjiv, Kaul
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Coronary Microcirculation in Aortic Stenosis.
Circulation. Cardiovascular interventions, 2020Aortic stenosis is a heterogeneous disorder. Variations in the pathological and physiological responses to pressure overload are incompletely understood and generate a range of flow and pressure gradient patterns, which ultimately cause varying microvascular effects. The impact of cardiac-coronary coupling depends on these pressure and flow effects. In
Hannah Z R, McConkey +5 more
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