- by Dr SUNIL DWIVEDI
- 0 Shares
- Apr 29 2017
Causes and symptoms of CORONARY ARTERY DISEASE
Damage or injury to the inner layer of a coronary artery initiates CAD, sometimes as early as childhood. The damage may be caused by various factors, including:
- High blood pressure
- High cholesterol
- Radiation therapy to the chest, as used for certain types of cancer
Damage to the inner wall of an artery leads to fatty deposits (plaques) made of cholesterol and other cellular waste products to accumulate at the site of injury in a process called atherosclerosis. Rupture of the surface of these plaques causes blood cells called platelets to clump at the site to try to repair the artery. Heart attack can occur due to this dumping.
Narrowed coronary arteries are unable to supply enough oxygen-rich blood to your heart — especially when it's beating hard, such as during exercise. Initially, the decreased blood flow may not cause any coronary artery disease symptoms. But, you may develop coronary artery disease symptoms as the plaques continue to build up in your coronary arteries. The symptoms are:
- Chest pain (angina). It is typically a feeling of pressure or tightness in your chest, as if someone were standing on your chest. This symptom, called as angina, is usually triggered by physical or emotional stress. It abolishes within minutes after stopping the stressful activity. This pain may be fleeting or sharp and noticed in the abdomen, back or arm in some people, especially women.
- Shortness of breath. You may develop shortness of breath or extreme fatigue with exertion if your heart can't pump enough blood to meet your body's needs.
- Heart attack. Heart attack ensues if a coronary artery becomes completely blocked. Heart attack classically presents with crushing pressure in your chest and pain in your shoulder or arm, sometimes with shortness of breath and sweating. Less typical signs and symptoms are present in women. Sometimes a heart attack occurs without any apparent signs or symptoms.
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