Angina and heart attacks are both severe forms of chest pain
associated with the heart muscle being deprived of oxygen
. This is usually caused by atherosclerosis
blocking the coronary arteries wgich supply the heart with blood. When the blockage first happens, the pain felt is referred to as angina pectoris
. The longer the vessel remains blocked is the less oxygen the muscle has left and it eventually begins to die. After one hour, the condition is usually called a heart attack, since even after restoring the blood supply to the area, some tissue already would have died and start to form scar tissue.
Angina is a warning sign that you might have a heart attack if you do not do something about your arteries, but after the attack, the heart is able to go back to normal. Angina also is a warning sign for strokes and other vascular problems that can affect different systems of the body.