Results 221 to 230 of about 5,529,262 (276)

Regulation of coronary blood flow

Progress in Cardiovascular Diseases, 1975
A very schematic summary of possible factors that affect coronary vascular resistance is illustrated in Fig. 11. These factors are mechanical, myogenic, metabolic, and neural. Mechanical influence is passive and is essentially determined by the extravascular compression which is important only during systole and particularly in the subendocardial ...
R, Rubio, R M, Berne
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Coronary vasospasm and the regulation of coronary blood flow

Progress in Cardiovascular Diseases, 2004
Under physiologic conditions, epicardial arteries contribute minimally to coronary vascular resistance. However, in the presence of endothelial dysfunction, stimuli that normally produce vasodilation may instead cause constriction. Examples include neural release of acetylcholine or norepinephrine, platelet activation and production of serotonin and ...
Srilakshmi, Konidala, David D, Gutterman
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Microcirculation and coronary blood flow

The American Journal of Cardiology, 1972
Abstract The microcirculation of the coronary vasculature functions as a penetrating vascular network running from epicardium to endocardium with direct communications of both arterioles and venules with the ventricular chambers. The degree of capillary flow and utilization reflect the fact that the heart is a constantly functioning muscle.
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Neural control of coronary blood flow

Journal of Vascular Research, 1985
Parasympathetic control of coronary blood flow has been extensively studied in dogs, and a clear vasodilator effect not dependent on changes in myocardial metabolism was observed. Parasympathetic vasodilatation is mediated via nitric oxide (EDRF) and is activated during carotid baroreceptor and chemoreceptor reflexes.
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MR measurement of coronary blood flow

Journal of Magnetic Resonance Imaging, 1999
The functional significance of coronary arterial stenosis can be evaluated by measuring the pharmacological flow reserve. Magnetic resonance (MR) imaging has a unique potential for noninvasive measurement of coronary blood flow and flow reserve in the native coronary artery and bypass graft. Restenosis after coronary balloon angioplasty and stenting in
Kan Takeda, Charles B Higgins
exaly   +3 more sources

Regional Coronary Blood Flow in Ponies

American Journal of Veterinary Research, 1976
SUMMARY Regional coronary blood flow was measured by injecting radioactive microspheres (15 μm ± 5 in diameter) into the left atrium of anesthetized ponies with surgically prepared open thorax before and during occlusion of the coronary arteries. The normal blood flow to the myocardium of the interventricular septum and the left ventricular wall were ...
V K, Reddy, R G, Kammula, T C, Graham, S K, Srungaram, W C, Bowie, E W, Hawthorne   +5 more
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Atherosclerosis—Relationship to coronary blood flow

The American Journal of Cardiology, 1983
Abstract Human atherosclerotic plaques in coronary arteries consist of a variable mixture of lipids, cells and fiber proteins synthesized by the cells. The 2 major space-occupying components of the advanced lesions, which together obstruct the lumen, are the fibrous cap and the necrotic core from which the lesions derive their name. The smooth muscle
R W, Wissler, D, Vesselinovitch
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Neuronal control of coronary blood flow

Basic Research in Cardiology, 1995
Controversies on acetylcholine-induced increases or decreases in coronary blood flow arise from obvious species differences, the role of endothelium in mediating vascular smooth muscle responses, and the marked negative chronotropic and inotropic effects of acetylcholine.
D, Baumgart, G, Heusch
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Effects of hemodialysis on coronary blood flow

The American Journal of Cardiology, 1994
Abstract This study provides evidence for a reduction in cardiac output and a trend toward reduced coronary flow with preservation of systemic blood pressure. It would be important to study a population of patients with troublesome hemodialysis-induced angina and coexistent coronary artery disease, because in these groups reductions in coronary blood
A, Kenny, M, Sutters, D B, Evans, L M, Shapiro   +3 more
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Coronary Blood Flow

1990
A quantitative understanding of coronary fluid mechanics is essential as it is this flow which irrigates the myocardium, transporting oxygen to the contractile muscle fibers of the heart wall.
S. H. Zhou, E. Mateeva, R. Collins
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