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RAE Tube Purpose — FRCA Final MCQ

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EasyAnaesthetic Equipment & SafetyRAE Tube PurposeFRCA Final

A 30-year-old man (ASA I) undergoes wisdom teeth extraction under nasal intubation. A north-facing RAE tube is used. What is the main advantage of a north-facing (nasal) RAE tube over a standard ETT for nasal intubation?

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Correct answer: E — Pre-formed curve that directs the tube and connections away from the surgical field

The nasal north-facing RAE (Ring-Adair-Elwyn) tube has a pre-formed curve that directs the tube upward over the forehead and the breathing circuit connections away from the surgical field (the mouth and face). This provides unobstructed access for the oral/dental surgeon while maintaining a secure airway. The tube is secured at the nose with tape. Disadvantages: the fixed length from naris to the pre-formed bend means the tube depth cannot be easily adjusted, potentially leading to endobronchial intubation in shorter patients or inadvertent extubation in taller patients.

Reference: RCOA – 2023 – ENT/dental anaesthesia module; Equipment and monitoring curriculum