Can you use a nasopharyngeal airway in patient with an endotracheal tube?

A nasopharyngeal airway (NPA) is a flexible plastic tube that is inserted through the nose and into the back of the throat (nasopharynx). It is used to provide a clear airway for breathing in patients who are unable to breathe on their own or who have a partial airway obstruction. An endotracheal tube (ETT) is a rigid plastic tube that is inserted into the trachea (windpipe) through the mouth or nose. It is used to provide a more secure and controlled airway for patients who are unable to breathe on their own or who have a complete airway obstruction.

Although an NPA is smaller in size and easier to insert than an ETT, it is not typically used in patients who already have an ETT in place. This is because the ETT is a more secure and controlled airway, and it would be difficult to insert an NPA without displacing the ETT. In addition, the presence of an ETT would make it difficult for the NPA to provide an effective airway.

If a patient has an ETT in place and their airway becomes obstructed, the primary intervention is to suction the ETT. If this does not clear the obstruction, the ETT may need to be repositioned or replaced. While an NPA can be used in emergency settings to support ventilation if the ETT becomes obstructed, it is generally not recommended for use in patients with an ETT in place.