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What is Coronary Heart Disease?

What is Coronary Heart Disease?
Coronary heart disease is also known as "the invisible killer," patients may show no symptoms before s/he dies.  Some patient's blood sugar, blood pressure and cholesterol exceeded the permitted level and has been on  medication, however, may still result  serious vascular thrombosis, or in need of life-saving surgery.

The heart is located inside the chest cavity between the lungs.  It constantly beats every minute, which provide the main force for the blood circulation. Although the heart itself contains blood, it requires the blood to  supply oxygen and nutrients in order for it to function properly. This depends  on the two great vessels near the heart - coronary artery, to supply blood to the blood vessels around the heart. Its network and branch surfaces shape like a crown covering the heart. If, for whatever reason, the coronary blood circulation is affected and leads to lack of blood supply to the heart and results in inadequate supply of oxygen and nutrients, the heart's function will become impaired, and this is the cause of coronary heart disease.