Changes in Pulsatile Coronary Blood Flow Induced by Coronary Vasodilators
نویسندگان
چکیده
منابع مشابه
Evaluation of Electrocardiogram Changes in Patients with Slow Coronary Flow
Background: Slow coronary flow (SCF) is defined as a condition in which in spite of no evidence of coronary occlusion or stenosis in angiography, there is delayed pacification of the vessels after the injection of a contrast agent. There are several studies about electrocardiogram (ECG) changes in these patients, but changes like OLD MI, RBBB, LBBB, LVH and ST-T wave have not b...
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Thirty male subjects, aged 29-69, were studied before and during stressful interviews. Coronary blood flow was measured using the radioactive Diodrast technique developed by Sevelius and Johnson. Blood pressure and pulse rate were also measured, cardiac output and peripheral resistance were calculated Significant alterations in these parameters occurred in a patterned way which corresponded to ...
متن کاملCoronary Arteries and Coronary Blood Flow
T ransthoracic two-dimensional echocardiography can be used to detect impaired global and regional function of the left and right ventricles, two indirect signs of coronary artery disease. Coronary artery visualization was first reported in 19761 and was further improved by use of tissue differentiation2 and digital imaging techniques with high frequency annular array transducers.3 By use not o...
متن کاملCoronary blood flow
per tissue mass of all human organs. The resting coronary blood flow is 250 ml min 1 (0.8 ml min 1 g 1 of heart muscle); this represents 5% of cardiac output. Ischaemia results when oxygen demand outstrips supply. Arterial oxygen extraction is 70–80%, compared with 25% for the rest of the body. Therefore, increased oxygen consumption must principally be met by an increase in coronary blood flow...
متن کاملCoronary Blood Flow
In the experimental animal the basic and controversial problem was studied of the influence of cardiac contraction on coronary blood flow. Normally beating hearts were perfused at a constant pressure, and coronary inflow and outflow were determined. In order to assess the role of systole, prolonged periods of ventricular asystole and fibrillation were induced and observations were made of the c...
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ژورنال
عنوان ژورنال: Japanese Heart Journal
سال: 1970
ISSN: 0021-4868,1348-673X
DOI: 10.1536/ihj.11.470