 Causes of Angina
Angina is a sign of coronary artery disease. Coronary artery disease develops if the blood vessels that carry oxygen to the heart are clogged. Fatty materials, called plaque, can narrow the blood vessels of the heart. This is called atherosclerosis. Atherosclerosis can cause decreased blood flow and oxygen to the heart muscle; this is called ischemia. Angina is one of the symptoms of ischemia; the earlier it is discovered and treated, the better are the chances of recovery.
Angina can occur due to other conditions that may affect the way blood flows to the heart, as well. Abnormal heart valves, abnormal heart rhythms, and anemia can all lead to angina. Angina vs. Heart Attack Sometimes a heart artery becomes completely blocked by plaque or blood clots. When this occurs, blood flow to that part of the heart stops. Without blood, the cells of the affected heart muscle will become permanently damaged; this is what happens during a heart attack.
The signs of a heart attack are similar to those of angina, with 3 main differences:
The pain is more severe.
The pain usually lasts longer than 5 minutes.
Medication or rest does not relieve the pain. If not treated, angina could lead to a heart attack.
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