Mechanical Ventilator

notion image
notion image
notion image

ARDS Ventilation Question

notion image

Answer:

3. Increase PEEP

Interpretation:

  • PaO₂ < 60 → significant hypoxemia
  • Ways to increase oxygen:
      1. Increase Fi02.
      1. Applying PEEP
      1. Increasing I:E ratio
          • giving more time for inspiration
          • Last resort
  • Steps
      1. Already on FiO₂ 90% (cannot further increase FiO₂, risk of oxygen toxicity)
      1. TV is adequate (6 ml/kg → correct for ARDS)
      1. I:E ratio adjustment is last resort (inverse ratio ventilation, not first step)
      1. Best option: increase PEEP → improves alveolar recruitment, oxygenation