title: Anomalous origin of the right coronary artery from the left coronary sinus: case report and literature review.
abstract: A 41-year-old man with no relevant cardiac history presented for evaluation of episodic syncope. Electrocardiography showed sinus rhythm with right bundle-branch block and Q waves in leads II, III, and aVF. Subsequent exercise treadmill testing and technetium 99m sestamibi study revealed a reversible posterior defect. Coronary angiography later showed a right coronary artery that arose from the left coronary sinus--an anomaly that has been associated with angina, myocardial infarction, and sudden cardiac death. After being informed of the potential risks and options associated with this anomaly, the patient chose long-term beta-blocker medical therapy. At follow-up, this treatment appeared to have resolved his episodic syncope.
authors: Section of Cardiology, St Luke's Episcopal Hospital and Texas Heart Institute, Houston 77030, USA.
authors: John S
authors: JS
authors: Ho
authors: Neil E
authors: NE
authors: Strickman
mesh_terms: D000328:Adult; D006328:Cardiac Catheterization; D017023:Coronary Angiography; D003330:Coronary Vessel Anomalies / Q000150:complications* / Q000000981:diagnostic imaging; D004562:Electrocardiography; D006327:Heart Block / Q000209:etiology; D006801:Humans; D008297:Male; D011877:Radionuclide Imaging; D019275:Radiopharmaceuticals; D012850:Sinus of Valsalva / Q000002:abnormalities* / Q000000981:diagnostic imaging; D017256:Technetium Tc 99m Sestamibi
chemical_list: D019275:Radiopharmaceuticals; D017256:Technetium Tc 99m Sestamibi