Unit 1: Coronary Heart Disease

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  • 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

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