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Why is oxygen therapy – allowing a patient to breathe in an atmosphere in which the proportion of oxygen is greater than 20 % – benefi cial? Because the

waelhammad
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2022-10-19
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Why is oxygen therapy – allowing a patient to breathe in an atmosphere in which the proportion of oxygen is greater than 20 % – benefi cial? Because the

  1. partial pressure of CO 2 in the inhaled air is decreased making it easier to clear CO 2 from the lungs.
  2. partial pressure of oxygen in the lungs is increased allowing more oxygen to dissolve in the alveolar fl uid.
  3. oxygen molecule is smaller than the nitrogen molecule so a greater number of moles of air can be drawn into the lungs with each breath.
  4. patient is required to inhale less frequently and this reduces the strain on the respiratory system.
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waelhammad
2022-10-19
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B: Breathing an atmosphere where oxygen is at greater than 20 % concentration (by volume) will mean more oxygen will cross the respiratory membrane to dissolve in plasma. In many cases this will be of benefi t to the patient.

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