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What This Guide Helps With
Airway obstructed? alarm indicating possible blockage, high resistance, or low airflow impacting effective ventilation delivery to the patient.
Step-by-Step Troubleshooting
Ensure Patient Safety First
- Immediately assess the patient condition
- Provide alternate ventilation if needed (bag-valve mask or backup ventilator)
- Confirm adequate oxygenation and ventilation
Verify the Reported Alarm and Behavior
- Confirm the “Airway obstructed?” alarm is active
- Observe when the alarm occurs (startup, inspiration, intermittent)
- Check for reduced tidal volume or no airflow
- Review pressure readings and waveforms
Check Patient Airway (Most Critical Step)
- Inspect endotracheal tube or mask for blockage
- Look for secretions, kinks, or patient biting
- Suction airway if clinically appropriate
Inspect Breathing Circuit for Obstruction
- Check tubing for kinks, compression, or fluid buildup
- Ensure no water accumulation in the circuit
- Verify all connections are open and unobstructed
Check Tube or Mask Position and Integrity
- Confirm proper endotracheal tube placement
- Ensure mask is not collapsed or blocked
- Inspect for damaged or occluded components
Evaluate Ventilation Settings and Patient Interaction
- Review pressure limits and flow settings
- Observe for patient-ventilator asynchrony
- Check for coughing, biting, or resistance
Swap External Components if Needed
- Replace breathing circuit with a known-good set
- Replace filters or humidification components
If the Problem Persists
If all external causes (airway, circuit, settings, accessories) have been ruled out and the alarm continues:
- Internal flow or pressure sensing issues are likely
- Remove the ventilator from service
- Label Out of Service
- Send for repair or bench evaluation
Clinical Use Tip
Never troubleshoot this alarm on an actively dependent patient without securing alternate ventilation first. Move the patient to a backup device before continuing.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Ventilator alarming 'Airway obstructed?' with low delivered volume during use."
Cause
What was observed during troubleshooting.
Example:
"Breathing circuit found kinked causing airflow restriction."
Resolution
What action was taken.
Example:
"Straightened/replaced circuit and verified normal ventilation."
Helpful Details to Include (If Known)
- Alarm behavior
- Accessories swapped
- Power behavior
- Environmental factors
- Indicator lights
- Final device status
Final Thought
Airway obstruction alarms must always be taken seriously and addressed immediately. Start with the patient, then systematically rule out external causes before considering device failure. Proper escalation protects both the patient and equipment integrity.
That is successful troubleshooting.