GCSE biology Artificial breathing aids

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  • Artificial breathing aids
    • Two types of breathing aids
      • long and short
    • Long
      • Negative pressure
      • Advantages
        • It was effective at treating people with Polio
      • Disadvantage'
        • Can affect the abdomen leading to blood in the lower body
      • Pressure is pumped out and air is sucked in
    • Short
      • positive pressure
        • They force measured breaths into the lungs, once they inflate with air the pressure stops and gradually decreases
      • Advantages
        • Used during operations and effective at ventilating the lungs
        • You can use them at home and allows you to move about
      • Disavantages
        • It requires the tube to be surgically entered


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