Smoke in the Anteroom
You are in a negative-pressure ICU room replacing a bed-exit alarm. The patient is on high-flow nasal cannula at 60 L/min and FiO2 0.9. Through the anteroom door you see flames about a foot high in the linen/trash receptacle, with heavy smoke. The corridor outside holds a clean-linen cart that blocks roughly half its width, and an oxygen cylinder on a cart sits unsecured against the wall. The fire alarm panel at the nurses' station is showing a trouble condition. The nurse is at the bedside; the patient is awake and anxious, and there is no other staff in the room.
1. State your priorities in order and what you personally do in the first two minutes.
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Priority order: people, then containment, then property. The device you came to install is last and irrelevant.
First two minutes:
- Remove the patient from the immediate area. Fire in a room with an oxygen-enriched atmosphere grows fast, and the patient cannot self-evacuate while tethered to high-flow tubing. Disconnect the high-flow circuit at the patient, take the patient and the nurse out of the room, and close the door behind you - closing the door starves the fire of oxygen and buys time.
- Pull the fire alarm at the nearest pull station. The panel already shows trouble, which means you cannot assume the alarm has transmitted. Activate it manually.
- Call the emergency number and state the location, that there is a fire, and that a patient on high-flow oxygen has been moved to the corridor. Do not assume someone else has called.
- Only then, if the fire is still small, contained to the receptacle, and you have a clear exit behind you, attempt extinguishment. Water-mist or CO2/ABC as appropriate for a Class A receptacle fire in a room with energized equipment. Never use water on energized electrical equipment; if you must choose one agent without knowing what is burning, CO2 protects the equipment and does not conduct.
- If the fire has spread beyond the receptacle or the smoke is dense - do not fight it. Close the door, evacuate horizontally, and let the fire brigade handle it.
What you do not do: finish the bed-exit alarm, run for a cart, or stop to move the linen cart before the patient is out.
2. Why does the high-flow nasal cannula change the fire behavior and the way you manage the patient's oxygen equipment during and after evacuation?
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Oxygen enrichment changes the physics of the room, not just the patient's therapy.
At 60 L/min and FiO2 0.9, oxygen escapes around the patient's face and accumulates in the immediate environment - in clothing, hair, bedding, and drapes. In an oxygen-enriched atmosphere:
- Materials that normally smolder or char ignite readily and burn vigorously; a small flame can flash over far faster than the same fire in room air.
- Smoldering can persist in fabric after the visible flame is out. Anything that was in that room should be treated as potentially reignited.
- A fire that seems contained to a trash receptacle may already be feeding on oxygen-enriched linens nearby.
Managing the equipment:
- Disconnect at the patient first - the therapy is not worth the exposure - and remove the cannula/circuit with the patient rather than trailing it through the smoke.
- Shut off the wall flowmeter (and the cylinder valve if a cylinder is in use) on the way out. A running oxygen outlet in a fire room is an accelerant feed.
- Secure or remove the unsecured cylinder from the corridor. A heated cylinder can vent or rupture; an unsecured one becomes a projectile. Do not wheel it through the smoke - take it out of the path if it is safe, otherwise report its location to the fire brigade.
- Once relocated, reassess the patient's oxygen needs. They were on 0.9 for a reason; the fire does not change the clinical indication, so restart appropriate therapy at the new location with a portable source rather than leaving them on room air unmonitored.
3. After the event, what findings do you report and to whom, and how do you handle the blocked corridor and the panel trouble?
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Report, do not fix quietly.
Findings to document and route:
- Blocked egress - the linen cart reducing the corridor to roughly half width is a life-safety deficiency. Route it to the nurse manager, environmental services, and the safety officer the same day, in writing. Egress obstruction is not a housekeeping preference; if it recurs it needs a standing rule, not a reminder.
- Unsecured oxygen cylinder - report to respiratory therapy and materials handling; cylinders must be secured. In a fire, an unsecured cylinder is a projectile hazard and it complicates the fire brigade's attack.
- Fire alarm panel in trouble - this is the most serious systemic finding, because a trouble condition means the system may not have annunciated or transmitted. Report it immediately to facilities/fire safety and require documentation that the panel was serviced and tested before the unit returns to normal operation. Your manual pull may have been the only signal.
- Oxygen-enriched environment incident and the patient's movement - enter it in the safety reporting system with the timeline.
- Your own actions - what you did, in what order, and what you would change. If you fought the fire before evacuating the patient, say so; that belongs in the after-action review, not in a private memory.
Who: charge nurse and nurse manager, the house safety officer, facilities engineering and fire safety, respiratory therapy, and the fire department's post-incident contact.
Stay in your lane: provide the equipment and electrical facts, the timeline, and the device status. Do not opine on building fire ratings or alarm panel programming you did not inspect - route those to the people who own them, and get their findings in writing so the record shows the chain of responsibility closed.