Cardiology

Sometimes, a non-invasive procedure will suffice

When a patient complains about chest pain, diagnosis will usually involve catheter angiography to evaluate the adequacy of blood supply to the heart. Researchers from Charité - Universitätsmedizin Berlin have now established ...

Cardiology

Risk factors ID'd for atrial fibrillation with type 1 diabetes

(HealthDay)—Older age, cardiovascular comorbidities, and renal complications increase the risk for atrial fibrillation (AF) in patients with type 1 diabetes, according to a study published online June 6 in Diabetes Care.

Cardiology

Study reveals new genetic link to heart disease

A collaboration involving the Icahn School of Medicine at Mount Sinai, the German Heart Center Munich, AstraZeneca, and Karolinska Institutet in Sweden has demonstrated that more than 30 percent of heart disease risk stems ...

Surgery

Chest cavity fire during emergency cardiac surgery

At this year's Euroanaesthesia Congress (the annual meeting of the European Society of Anaesthesiology) in Vienna, Austria (1-3 June), doctors present the unique case of a man who suffered a flash fire in his chest cavity ...

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Coronary circulation

Coronary circulation is the circulation of blood in the blood vessels of the heart muscle. Although blood fills the chambers of the heart, the muscle tissue of the heart (the myocardium) is so thick that it requires coronary blood vessels to deliver blood deep into it. The vessels that deliver oxygen-rich blood to the myocardium are known as coronary arteries. The vessels that remove the deoxygenated blood from the heart muscle are known as coronary veins.

The coronary arteries that run on the surface of the heart are called epicardial coronary arteries. These arteries, when healthy, are capable of autoregulation to maintain coronary blood flow at levels appropriate to the needs of the heart muscle. These relatively narrow vessels are commonly affected by atherosclerosis and can become blocked, causing angina or a heart attack. (See also: circulatory system.) The coronary arteries that run deep within the myocardium are referred to as subendocardial.

The coronary arteries are classified as "end circulation", since they represent the only source of blood supply to the myocardium: there is very little redundant blood supply, which is why blockage of these vessels can be so critical.

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