An adjunctive device that helps to stiffen an endotracheal tube temporarily for insertion is:

Question

Quizplus · Accepted Answer

A stylette is commonly used to stiffen an endotracheal tube temporarily for insertion. It is a flexible, usually plastic or metal, rod that is inserted inside the endotracheal tube to provide rigidity and facilitate insertion into the trachea. The other options are not adjunctive devices used for this purpose. The Miller and Macintosh blades are types of laryngoscope blades used to visualize the vocal cords during intubation, while Magill forceps are used to grasp and manipulate the endotracheal tube during intubation.

An Adjunctive Device That Helps to Stiffen an Endotracheal Tube