Arteries carry oxygenated blood away from your heart. They have thick walls and a muscular layer that keeps your blood moving. Arteries can be as wide as a nickel (about two centimeters). They are the ...

The connection and difference between atrial fibrillation and coronary artery disease can be confusing. Atrial fibrillation (AFib) is a form of arrhythmia, or abnormal heart rhythm. Coronary artery ...

Dr. Paul Friedman answers the question: 'Heart Block versus Artery Blockage?' — -- Question: I have been diagnosed with heart block. How does this differ from blockage in one of my arteries?

The human heart is a finely-tuned instrument that serves the whole body. It is a muscular organ around the size of a closed fist, and it sits in the chest, slightly to the left of center. The heart ...

Coronary artery disease (CAD) is a type of heart disease that occurs when your coronary arteries don’t supply enough blood to your heart. CAD often develops because of a waxy substance buildup called ...

It is a popular myth that all heart attacks present with dramatic chest pain and collapse, but many happen silently or with symptoms so subtle that they are often missed. This is normally the case in ...

A recent study from the Mayo Clinic has found that spontaneous coronary artery dissection (SCAD) is a nontraditional cause of ...