Nondominant right coronary artery disease. A source for right ventricular infarction, anginal pain, and a positive
Abstract:
A patient is described who presented with isolated episodes of typical angina pectoris. Subsequent exercise electrocardiogram was positive, and cardiac catheterization revealed a 90 percent lesion of a nondominant right coronary artery supplying only the right ventricular (RV) myocardium. The left coronary artery was normal. Stress gated equilibrium radionuclide angiograms (RNA) revealed a normal left ventricular exercise response and a markedly abnormal RV response (RV ejection fraction decreased from 31 percent at rest to 27 percent at peak stress). Nondominant right coronary artery lesions can be a source of angina pectoris, RV infarction, and a positive ECG response to exercise. Stress RNA can be useful in evaluating the functional significance of these lesions.
More Related Videos
06:39Intracoronary Acetylcholine Provocation Testing for Assessment of Coronary Vasomotor Disorders
Published on: August 18, 2016
10:18Generation and Characterization of Right Ventricular Myocardial Infarction Induced by Permanent Ligation of the Right Coronary Artery in Mice
Published on: February 1, 2022
Related Concept Videos
Coronary Circulation
Coronary circulation begins at the base of the aorta, where two main arteries arise—the left and right coronary arteries. These arteries encircle the heart in the coronary sulcus and supply the...
Coronary Artery Disease III: Clinical Manifestations
Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations
Acute Coronary Syndrome III: Diagnostic Studies
Angina I: Introduction
Angina III: Clinical Manifestations and Assessment
