BACKGROUND For diagnosis of significant coronary artery stenosis, the most accurate parameter among the conventional echocardiographic parameters remains unknown. OBJECTIVES To assess the diagnostic efficacy of conventional echocardiographic parameters in the diagnosis of significant coronary artery stenosis and their correlation with the percentage of stenosis considering conventional corona...

Markers associated with coronary restenosis must be identified to develop therapeutic strategies for improving the clinical outcome. We studied whether adhesion proteins on leukocytes and platelets from coronary sinus blood were associated with restenosis after coronary intervention in patients with stable coronary artery disease. Adhesion proteins on platelets and leukocytes were measured by f...

in this paper, we describe a case of an aneurysmal circumflex artery connected to the coronary sinus through a fistula in a 40-year-old man with a two-year history of palpitation and chest pain. we discussed surgical management for patients with coronary artery fistula (caf), particularly for asymptomatic patients with a small left-to-right shunt .

Anatomic variations of the orifice of the human coronary sinus now have practical significance since the advent of catheterization of the coronary sinus. Six main types of variation of the valve of the coronary sinus of 150 hearts are described. The difficulties encountered in catheterization of the human coronary sinus are probably due to obstruction offered by large membranes, bars and networ...

We examined, in conscious dogs, the effects of beta-adrenergic stimulation on measurements of left circumflex coronary arterial diameter and blood flow and on calculations of late diastolic coronary resistance (LDCR) and left circumflex coronary internal cross-sectional area (CSA). Isoproterenol (0.1 microgram/kg) initially decreased mean arterial pressure by 25 +/- 2% (mean +/- SEM), and LDCR ...

Glucagon, 300 ,ug/minute, was infused intravenously over 15 minutes in 27 subjects. The patients were divided into three groups: group I, patients without heart disease; group II, patients with arteriosclerotic heart disease; and group III, patients with congestive heart failure. Hemodynamic measurements included observations on myocardial blood flow using bolus injections of 84rubidium and a c...

We examined, in conscious dogs, the effects of /?-adrenergic stimulation on measurements of left circumflex coronary arterial diameter and blood flow and on calculations of late diastolic coronary resistance (LDCR) and left circumflex coronary internal cross-sectional area (CSA). Isoproterenol (0.1 fig/kg) initially decreased mean arterial pressure by 25 ± 2% (mean ± SEM), and LDCR by 62 ± 4%, ...

Previous studies have demonstrated competition between sympathetic alpha receptor-mediated coronary vasoconstriction and local metabolic vasodilation during sympathetic activation. The present study tested if this competition also occurs in the presence of coronary stenosis. In closed-chest dogs, the left coronary artery was cannulated, and blood flow from the aorta was restricted by a moderate...

a 55-year-old man referred for cardiac resynchronization therapy (crt) due to severe heart failure. a severe stenosis in the coronary sinus vein after the posterior branch disallowed the insertion of the lead. nevertheless, the stenosis was dilated and the left ventricle (lv) lead was implanted in the lateral marginal branch.

The rates of washout of 133Xe and 131I-iodoantipyrine from the myocardium into the coronary sinus blood were determined over a wide range of hematocrits after simultaneous injection of the isotopes into the left anterior descending coronary artery of dogs. The ratio of the monoexponential disappearance constants (kX/kI), which is a measure of the ratio of the dynamic blood-tissue partition coef...