Circulatoin Aids Mindmap

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  • Created by: Sophie
  • Created on: 27-04-13 10:04
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  • Circulation Aids
    • Repairing the heart
      • Mechanical Valves, less drastic than whole heart transplant but high surgery risk, problems with blood clots
    • Artificial Blood
    • Stents
      • Coronary heart disease- arteries blocked by fatty deposits. Arteries narrow and blood flow restricted- heart attacks
      • Tubes inserted insied arteries keeping them open and allowing blood flow to the heart muscles, keeping their heart beating
      • Lower risk of heart attack of people with coronary disease
      • Over time the artery can narrow again as the stent irritates the artery causing scar tissue to grow. Patient has to take drugs to prevent blood clotting on the stent
  • A blood substitute- e.g a saline solution
  • Replaces lost volume of blood
    • Safe (unless bubbles)
  • Saves lives- time to produce more blood cells
  • Blood transfusion if necessary, but atm these artificial bloods have side effects
  • Artificial hearts- mechanical device, usually temporary until heart donor is found
    • ADVANTAGE: not rejected by immune system- metal or plastic not 'foreign tissue'
  • DISADVANTAGES: risk of surgery, heart may wear out, blood clots and strokes risk, drugs needed to thin the blood- bleeding problems in accident

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