Results 221 to 230 of about 30,001 (261)

Coronary flow reserve and coronary occlusive disease

Transplant International, 1992
The functional effects of coronary occlusive disease (COD) in cardiac transplant patients on small-resistance coronary vessels are unclear. We investigated the changes in coronary flow reserve (CFR) in response to the non-specific smooth muscle vasodilator papaverine.
P A, Mullins, J P, Scott, D J, Aravot, C, Dennis, S R, Large, J, Wallwork, P M, Schofield   +6 more
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Coronary flow and flow reserve in children

Acta Paediatrica, 2004
Aortic blood pressure affects coronary blood flow, but within the normal physiological blood pressure range coronary blood flow is constant. The coronary flow is pulsatile, being maximal in the early diastole. There is a smaller systolic flow component. The low systolic pressure in the right ventricle favours systolic flow.
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Problems of Coronary Flow Reserve

Annals of Biomedical Engineering, 2000
Coronary flow reserve is used to aid understanding why myocardial oxygen consumption may fail to meet demand. Its general aspects are well known, but the problems of using it are not. This manuscript describes three important factors that need to be considered when assessing coronary flow reserve.
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Coronary flow reserve is impaired in patients with slow coronary flow

Atherosclerosis, 2007
Slow coronary flow (SCF) in a normal coronary angiogram is a well-recognized clinical entity, but its etiopathogenesis remains unclear. However, previous studies have suggested that microvascular abnormalities and endothelial dysfunction responsible for SCF.
Dogan, Erdogan, Mustafa, Caliskan, Hakan, Gullu, Alpay Turan, Sezgin, Aylin, Yildirir, Haldun, Muderrisoglu   +5 more
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The Concept of Coronary Flow Reserve

Journal of Cardiovascular Pharmacology, 1992
Coronary reserve has been defined as the ratio of coronary resistance under control (rest) conditions and of coronary resistance after maximal coronary vasodilation. The latter can be achieved by various interventions, the most important and clinically relevant example being intravenous administration of dipyridamole at 0.5 mg/kg of body weight.
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Invasive assessment of coronary flow reserve

Journal of Nuclear Cardiology, 2008
Coronary angiography is a well-established invasive method of defining coronary anatomy and forms the basis for most decisions between medical therapy, surgery, and percutaneous revascularization in patients with coronary artery disease. Angiography is limited, however, in that it solely provides anatomic information.
Fadi, El-Ahdab, Michael, Ragosta
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Coronary flow reserve measurements in hypertension

Medical Clinics of North America, 2004
Taken together, the diagnostic algorithm is leaded by a simple ECG stress test. In case of ST-segment depression the preferred image test should be stress ECG to bring patients at high risk for significant epicardial coronary artery stenosis to coronary angiography (and revascularization). In case of the lack of wall motion abnormalities (during stress-
Malte, Kelm, Bodo E, Strauer
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Coronary flow reserve is reduced in sarcoidosis

Atherosclerosis, 2017
Sarcoidosis is a multisystem disease with frequent cardiac involvement, albeit manifest cardiac disease is rare. Though epicardial coronary arteries are not frequently involved, microvascular disease is rather common in both symptomatic and asymptomatic patients. The mechanism of microvascular involvement has not been elaborated yet.
Seref, Kul, Gonul Aciksari, Kutlu, Tolga Sinan, Guvenc, Murat, Kavas, Kenan, Demircioglu, Yusuf, Yilmaz, Halil Ibrahim, Yakar, Asiye, Kanbay, Sibel, Boga, Mustafa, Caliskan   +9 more
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Coronary Flow Reserve

2015
The seminal concept of coronary flow reserve (CFR) was proposed experimentally by Lance K. Gould in 1974 [1]. Under normal conditions, in the absence of stenosis, coronary blood flow can increase approximately four- to sixfold to meet increasing myocardial oxygen demands.
Fausto Rigo, Eugenio Picano
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Effects of coronary stenoses on coronary flow reserve and resistance

The American Journal of Cardiology, 1974
Abstract Resting coronary flow and regional distribution are not affected by narrowing of up to 85 percent of arterial diameter and therefore provide little insight into the effects of stenoses on coronary hemodynamics. However, maximal coronary flow and coronary flow reserve are markedly reduced by constrictions that do not affect resting flow ...
K L, Gould, K, Lipscomb
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