Unit 1: Coronary Heart Disease
- Created by: rosieevie
- Created on: 04-05-14 13:42
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- Coronary Heart Disease
- Atheroma
- Plaque made of low-density lipoproteins, connective tissue and white blood cells
- Fatty deposit formed in wall of artery
- Narrows the lumen which restricts blood flow
- Causes high blood pressure and weakened arteries
- Aneurysm
- Inner layers of the artery push through the outer layers and cause a swelling
- If it bursts it causes a haemorrhage (bleeding) and therefore blood loss
- Myocardial Infarction- Heart Attack
- A blockage in the coronary artery causes a reduced supply of oxygen to the tissues
- Tissues become damaged or die
- The severity of the heart attack depends on the position of the blockage
- Symptoms include chest pains and shortness of breath
- Thrombosis
- Atheroma breaks through lining and leaves a rough surface
- Platelets accumulate and form a blood clot
- Blood clot may block the vessel and prevent blood supply to tissues
- Tissues die from lack of oxygen/glucose
- Can lead to a myocardial infarction if in the coronary artery
- Atheroma
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