Chest Pain, Exercise Electrocardiography and Coronary Arteriography

Post-mortem Coronary Arteriography and Its Correlation with Electrocardiography.

Myocardial anoxia may arise in one of three ways. There may be narrowing and obstruction of the coronary arteries, or the oxygen-carrying power of the blood may be reduced, or there may be relative impairment because of the increased demands of a great bulk of muscle. Under such circumstances, a collateral circulation develops; and Schlesinger (1938), Blumgart, Schlesinger, and Davis (1940), an...

Maximal treadmill exercise electrocardiography. Correlations with coronary arteriography and cardiac hemodynamics.

SUMMARY Electrocardiograms were recorded during and at 2-min intervals following maximal treadmill exercise in 100 patients and were correlated with coronary arteriograms, left ventricular cineangiograms, and resting and exercise cardiac hemodynamics. The incidence and extent of exercise-induced "ischemic" S-T segment depression increased significantly (P < 0.01) with increasing extent of coron...

Thallium-201 scintigraphy in diagnosis of coronary stenosis. Comparison with electrocardiography and coronary arteriography.

Myocardial imaging with thallium-201 at rest and during exercise. Comparison with coronary arteriography and resting and stress electrocardiography.

Myocardial imaging with intravenous thallium-201 (201Tl) was performed at rest and following maximal treadmill exercise in 101 patients with suspected coronary artery disease. Results were interpreted from Polaroid scintiphotos by three independent observers with complete interobserver agreement in 79%. Of 25 patients with no or insignificant coronary artery disease (less than 50% diameter sten...

Coronary reserve and exercise ECG in patients with chest pain and normal coronary angiograms.

BACKGROUND Coronary vasodilator reserve is reduced in some patients with a history of chest pain and angiographically normal coronary arteries. ECG changes suggestive of myocardial ischemia during exercise also can be demonstrated in a subset of these patients. METHODS AND RESULTS We have investigated the correlation between coronary vasodilator reserve, assessed with 13N-labeled ammonia and ...