Thus, the diagnosis of STEMI with a prone ECG alone is difficult, and a new diagnostic criterion is urgently needed, especially in the era of COVID-19 and influenza. Consequently, a prone ECG cannot be used in place of the supine ECG to diagnose STEMI. A rapid standard ECG is necessary if STEMI or worsening myocardial ischemia is suspected.

Symptoms of heart disease in the blood vessels. Coronary artery disease is a common heart condition that affects the major blood vessels that supply the heart muscle. Cholesterol deposits (plaques) in the heart arteries are usually the cause of coronary artery disease. The buildup of these plaques is called atherosclerosis (ath-ur-o-skluh-ROE-sis).

Ischemia can affect the heart. When this happens, it's called cardiac ischemia. Also called myocardial ischemia, ischemia of the heart is most often caused by atherosclerotic plaques in the coronary arteries, the arteries which supply the heart muscle.

The heart’s bottom right pumping chamber (right ventricle) sends blood that’s low in oxygen (oxygen-poor blood) to the lungs. Blood travels through the pulmonary trunk (the main pulmonary artery). Blood cells pick up oxygen in the lungs. Pulmonary veins carry the oxygenated blood from the lungs to the heart’s left atrium (upper heart chamber).

The coronary sinus is the largest cardiac venous structure. It arises from the confluence of the oblique vein (of Marshall) of left atrium and the great cardiac vein. The sinus then courses for about 2 or 3 cm within the posterior atrioventricular groove, between the left atrium and left ventricle.

Coronary artery disease (CAD) is the most common type of heart disease in the United States. It is sometimes called coronary heart disease or ischemic heart disease. For some people, the first sign of CAD is a heart attack. You and your health care team may be able to help reduce your risk for CAD. What causes coronary artery disease?

The direct costs of coronary CT angiography relative to contrast-enhanced thoracic CT: Time-driven activity-based costing . 2021 Nov-Dec;15 (6):477-483. doi: 10.1016/j.jcct.2021.06.002. Epub 2021 Jun 8. Authors

A computerized tomography (CT) coronary angiogram is an imaging test that looks at the arteries that supply blood to the heart. A CT coronary angiogram uses a powerful X-ray machine to produce images of the heart and its blood vessels. The test is used to diagnose a variety of heart conditions.