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Wednesday, July 15, 2020 | History

1 edition of Coronary circulation and energetics of the myocardium found in the catalog.

Coronary circulation and energetics of the myocardium

Coronary circulation and energetics of the myocardium

international symposium held at the Instituto di Cardiologia Sperimentale delle SimesS. p. A., Milan, Italy

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  • 26 Currently reading

Published by S. Karger in Basel .
Written in English


Edition Notes

Statementdited by G. Marchetti and B. Taccardi.
ContributionsMarchetti, G., Taccardi, B.
ID Numbers
Open LibraryOL22676277M

There are two routes to supply oxygen to the myocardium of fishes, an oxygen-poor luminal supply and, in some fishes, an additional oxygen-rich coronary circulation. When present in teleost fishes, coronary vessels penetrate the myocardium to differing degrees. Elasmobranchs have coronary vessels throughout the myocardium. Physiology and pharmacology of the coronary circulation and myocardium, particularly in relation to coronary artery disease The American Journal of Medicine, Vol. 47, No. 2 Beta-adrenergic blocking agents for the treatment of angina pectoris.

  Coronary heart disease refers to a mismatch between myocardial oxygen supply and demand. Atherosclerosis is the most important cause. Atherosclerotic changes in coronary vessel walls lead to a narrowing of the lumen and prevent vessels from dilating. As a result, an increase in oxygen demand (e.g., during physical activity) can no longer be satisfied and/or myocardial perfusion at rest .   The coronary circulation is central to sustaining myocardial viability. Unlike the cir­ culations of most other organs, if the coronary circulation becomes insufficient to sustain myocardial contractile function, overall quality of life rapidly declines and life can abruptly cturer: Springer.

  The coronary circulation is central to sustaining myocardial viability. Unlike the cir culations of most other organs, if the coronary circulation becomes insufficient to sustain myocardial contractile function, overall quality of life rapidly declines and life can abruptly end. Myocardial substrate metabolism influences left ventricular energetics Article (PDF Available) in AJP Heart and Circulatory Physiology (4):H May with Reads How we measure 'reads'.


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Coronary circulation and energetics of the myocardium Download PDF EPUB FB2

Coronary Circulation and Energetics of the Myocardium: International Symposium, Milan [Marchetti, G., Taccardi, B.] on *FREE* shipping on qualifying offers. Coronary Circulation and Energetics of the Myocardium: International Symposium, Milan.

Coronary circulation and energetics of the myocardium. Basel, New York, Karger, (OCoLC) Online version: International Symposium on Coronary Circulation and Energetics of the Myocardium ( Instituto di Cardiologia sperimentale della Simes s.p.a.). Coronary circulation and energetics of the myocardium.

Basel, New York, Karger, Full text Full text is available as a scanned copy of the original print version. Get a printable copy (PDF file) of the complete article (K), or click on a page image below to browse page by : John Hamer. Coronary Circulation and Energetics of the Myocardium International Symposium held at the Istituto di Cardiologia Sperimentale della Simes S.

Milan, Italy Coronary Circulation and Energetics of the Myocardium Edited by G. MARCHETTI and B. TACCARDI Organized by Simes Scientific Services figures and 31 tables BASEL (Switzerland) S.

Coronary circulation is the circulation of blood in the blood vessels that supply the heart muscle (myocardium). Coronary arteries supply oxygenated blood to the heart muscle, and cardiac veins drain away the blood once it has been deoxygenated. Because the rest of the body, and most especially the brain, needs a steady supply of oxygenated blood that is free of all but the slightest MeSH: D Coronary circulation, part of the systemic circulatory system that supplies blood to and provides drainage from the tissues of the the human heart, two coronary arteries arise from the aorta just beyond the semilunar valves; during diastole, the increased aortic pressure above the valves forces blood into the coronary arteries and thence into the musculature of the heart.

Myocardial blood flow was measured by a pressure difference catheter in the coronary sinus. Myocardial energy demand was calculated according to Bretschneider’s equation from its hemodynamic determinants. Myocardial oxygen consumption (MVO 2) was markedly higher than the expected energy demand (E t) under ventricular pacing.

Comparison of cardiotropic drug effects on haemodynamic and myocardial energetics in patients with heart failure: a computer simulation J Med Eng Technol. May-Jun ;24(3) doi: / Cardiac Contractility. (Book Reviews: Factors Influencing Myocardial Contractility. A Gordon Research Conference, ; Coronary Circulation and Energetics of the Myocardium.

Proceedings of an international symposium, Milarn, Italy, ). Search within book. Front Matter. pharmacologists and bioengineers; to explore interactions between such subfields as blood rheology, micro­ circulation and ischaemia of the myocardium, heat transfer, heat work and performance as a pump, effect of -metabolites and ion transfer, mechanism of sudden death, protein synthesis and protein.

Download PDF: Sorry, we are unable to provide the full text but you may find it at the following location(s): g (external link). This study was therefore designed to assess the effects of dobutamine and hydralazine on the coronary circulation and myocardial energetics in patients with chronic nonischemic congestive heart failure.

Methods Study patients. Ten patients with congestive heart failure (New York Heart Association functional classes III and IV) were evaluated. Metabolism and energetics in acquired heart disease: Impact of diet, obesity or systemic metabolic disorders on myocardial metabolism mitochondrial function, or the response to ischemia/reperfusion.

Novel cardiac imaging methods to assess myocardial metabolism, injury, and fibrosis. Coronary circulation is the circulation of blood in the blood vessels of the heart muscle. The vessels that deliver oxygen-rich blood to the myocardium are known as coronary arteries.

The vessels that remove the deoxygenated blood from the heart muscle are known as cardiac veins. Full text Full text is available as a scanned copy of the original print version.

Get a printable copy (PDF file) of the complete article (K), or click on a page image below to browse page by page. The myocardium—the muscles of the heart—are fueled with freshly oxygenated blood and nutrients from the right and left coronary arteries. The waste created as.

Coronary Circulation The coronary vasculature supplies blood to the muscles of the heart (myocardium). These coronary arteries are the first branches (right & left coronary arteries) that arise from the aorta, and they run on the surface of the heart's muscle.

Branches from the arteries penetrate the muscle in order to supply blood to deeper. The acute effects of oral hydralazine, 1 mg/kg, on coronary vascular resistance, coronary blood flow (estimated using the coronary sinus thermodilution technique), and myocardial oxygen consumption were evaluated in 10 patients with chronic (New York Heart Association class III and IV) nonischemic congestive heart failure.

Left ventricular (LV) cardiac remodeling after ST-segment elevation myocardial infarction (STEMI) is an important risk factor for the development of heart failure and all-cause mortality. 1 Infarct size, microvascular obstruction, and inflammation are important determinants of LV remodeling after STEMI.

2 A recent study including STEMI patients treated with primary percutaneous coronary. Thus, the coronary circulation is responsible for delivering blood to the heart tissue itself (the myocardium). The normal heart functions almost exclusively as an aerobic organ with little capacity for anaerobic metabolism to produce energy.

A short-axis view of a dynamic [11 C]acetate PET acquisition displays the transit of radioactivity through the right and left ventricular cavity after a bolus uently, [11 C]acetate is readily taken up by the myocardium and reaches a maximum after ∼5 matching myocardial time–activity curve demonstrates the bi- and mono-exponential curve fitting of the wash-out phase.Coronary Blood Flow.

Coronary Blood Flow: Normal is ~-1 (~5% of resting CO) May increase 4x during strenuous exercise Myocardial work may increase up to 9x, though as myocardial oxygen extraction is unchanged efficiency is actually improved during exercise.

CBF is dependent on: Coronary vascular resistance; Coronary perfusion pressure. Identification of a coronary thrombus by angiography including intracoronary imaging or by autopsy. The criteria for type 2 MI includes detection of a rise and/or fall of cTn with at least one value above the 99th percentile and evidence of an imbalance between myocardial oxygen supply and demand unrelated to coronary thrombosis, requiring at.