cardiovascular diseases

  • Created by: satara
  • Created on: 16-04-13 09:18
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  • Cardiovascular diseases
    • Are those diseases that affect the heart and circulatory system.
    • types of cardiovascular diseases
      • 1.atherosclerosis
      • stroke
      • Coronary heart disease (CHD)
      • arterosclerosis
    • symtoms of cardiovascular disease
      • highblood pressure and hypertension, this is caused by the narrowing of the lumen caused by depostion of atheroma.
      • narrowed lumen->increased friction in the blood and artery->the heart pumps against the increased friction->rases blood pressure->atheroma decreases elasticity in artery wall->
        • these means the artery walls cant dilate and recoil easily->this causes arterioscerosis
          • Arterioscerosis is the hardening of the artery wall, which gives it even less flexibility, this is caused by desposition of minerals,such as calcium, in the walls and particularly in the atheroma
    • cardiovascular disease is on of the greatest causes of premature deaths in advanced countries.
    • Coronary heart disease and stroke often result from atherosclerosis.
    • Due to the accumulation of fatty deposits, this reduces blood flow,this could lead to a cardiovascular diease
    • treating cardiovascular diseases are very expensive and involve long-term treatment with drugs to reduce blood pressure and cholesterol, you might have to have surgery.
    • Coronary heart disease, people with this disease are more exhausted, this is due to atherosclerosis in the coronary arteries.
      • the atheroma narrowa the lumen of the artery->this reduces blood flow to the heart->this means the heart does not recieve sufficient oxygen for aerobic respiration->this means that the heart cant's pump as strongly as required->this results in insufficient quantities of blood flowing to the body,muscles and lungs
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