Topic Progress:
  • Apnoea alarm will be triggered if a breath is not registered within the period set for the apnoea time.
  • Apnoea time is usually set at 15-20 seconds


  • Causes  (hover over to see the necessary Tx vs mix&match)
    • The patient is apnoeic for greater than the apnoea time set
    • Obstruction
    • Flow sensor is not calibrated or is faulty
  • Management
    • Apply controlled ventilation if required
    • Check circuit to ensure patent
    • Calibrate flow sensor and replace it if necessary
    • Increase apnoea time alarm if due to high tidal volume and low RR and no patient compromise

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