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Cardiovascular diseases (Cardiovascular diseases are diseases of the heart…
Cardiovascular diseases
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In coronary heart disease, layers of fatty material build up inside the coronary arteries. This cause the coronary arteries to narrow.
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In extreme cases, this can result in a heart attack, where the heart is starved of oxygen.
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In some people, coronary heart disease can cause almost a total blockage of a coronary artery.
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These people can be treated using a stent. A stent is a tube which can be inserted into the coronary artery to keep it open.
A stent will not prevent other regions of the coronary arteries from narrowing. It does not underlying causes of the disease.
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Sometimes the heart valves do not fully open so the heart has to pump extra hard to get the blood through. This can cause the heart to enlarge.
When heart valves are faulty we can replace them either with a mechanical value made of metal or a valve from an animal such as a pig.
Mechanical valves can last a lifetime but they increase the risk of bloodclots. Patients have to take anticlotting drugs.