
Hospital Use - Technical Bulletin (continued)
Troubleshooting Tips
Problem Possible Cause Corrective Action
No oxygen flow from
nasal prongs
1. Patient unable to feel the airflow in their nostrils.
2. Flow control valve is not turned on.
3. Oxygen system is not functioning
properly or oxygen container is empty.
4. The nasal cannula is disconnected from
oxygen device or supply tubing.
5. Nasal cannula or oxygen tubing kinked
or blocked.
1. Check air flow by placing prongs next to hand or
place nasal prongs into a small container of
clean water. Bubbles will appear if there is
oxygen flow.
2. Set flow control to prescribed setting.
3. Check pressure guage on oxygen cylinder,
ensure flow is coming from oxygen source.
4. Reconnect oxygen tubing. Ensure all tubing
connections are tight and secure.
5. Inspect cannula and oxygen tubing for
kinks or damage. Ensure nothing is placed on top
the tubing.
Water in nasal cannula or
oxygen supply tubing
1. Humidifier bottle overfilled or tipped over. 1. Pour out the excess water. Ensure humidifier bottle
is upright. Add a water trap to tubing.
Nasal dryness or
irritation
1. Gas flow is dry.
2. No humidifier is being used.
1. Try using a normal saline spray or water soluble
ointment to moisten the inside of nostrils.
2. Add a bubble humidifier to add some humidification.
Soreness or irritation
around ears 1. Headset tubing too tight.
2. Tubing pressing against skin.
1. Loosen headset tubing.
2. Place a cotton padding or cushion (e.g., E-Z Wrap,
DuoDerm patch) under headset tubing.
Skin rash and/or sores
caused by nasal cannula 1. Sensitivity or reaction to nasal cannula
material.
2. Nasal cannula is dirty.
3. Most cannula are made with a PVC material,
which may harden if used too long, or if
cleaned with an alcohol based product.
1. Contact the patient's physician. Try using a cannula
made from another material, e.g., silicone.
2. Replace the nasal cannula.
3. Replace the nasal cannula.
SLML-121 Rev C, Oct 2017
2.High humidity environoment or rapid drop in
room temperature.2.Add a water trap to tubing.