What should you look for if the humidifier pressure relief is popping off while a patient is receiving nasal O2 through a bubble humidifier?

In the scenario described, if the humidifier pressure relief is popping off while a patient is receiving nasal oxygen through a bubble humidifier, it is important to look for a crimped or twisted delivery tubing. This is correct because an obstruction in the delivery tubing can create back pressure, causing the pressure relief valve to activate and release pressure, which results in the popping sound.

When the tubing is kinked or blocked, it hinders the flow of oxygen, leading to pressure build-up in the humidifier system that the pressure relief valve is designed to mitigate. Ensuring that the tubing is free of obstructions is a crucial step in maintaining proper function of the oxygen delivery system and ensuring patient safety and comfort.

Other factors, such as blocked nasal passages or insufficient flow rates, could contribute to ineffective oxygen delivery but would not directly cause the pressure relief to pop off. Replacing the humidifier should not be the first step without investigating other more likely issues, such as the tubing condition.