1. what 2 main thing ventilator does to help pt?
    oxygenate and ventilate
  2. what setting can RT change?
    Volume, rate, pressure, O2 setting.
  3. what 2 additional setting can RT use?
    Pressure support and PEEP
  4. AC
    • the ventilator supports every breath, whether it's initiated by the patient or the ventilator. AC is often used to allow the patient to rest, because the ventilator
    • does all the work. This high level of respiratory support is frequently
    • required in patients who have been resuscitated, have acute respiratory
    • distress syndrome (ARDS), or are paralyzed or sedated.
  5. what complication can AC mode cause?
    Barro trauma.
  6. SIMV
    • not all spontaneous breaths are assisted, leaving the patient to draw some breaths on her own.SIMV helps preserve the strength of the respiratory musculature,
    • decreases the risk of hyperventilation and barotrauma, and facilitates
    • weaning.
  7. PEEP
    • increase oxygenation in either AC or SIMV mode. The effect of PEEP on
    • the lungs is similar to blowing up a balloon and not letting it
    • completely deflate before blowing it up again. PEEP should not exceed 20 cm H2O; higher settings increase the risk of severe lung damage, subcutaneous emphysema, and pneumothorax.4
  8. PS
    • Used alone or added to SIMV, this provides a small amount of pressure
    • during inspiration to help the patient draw in a spontaneous breath.
    • Pressure support makes it easier for the patient to overcome the
    • resistance of the ET tube and is often used during weaning because it
    • reduces the work of breathing. It's not necessary during AC ventilation
    • because in that setting, the ventilator supports all of the breaths.
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