Critical Care Registered Nurse (CCRN) Practice Exam

What is assessed during the pharyngeal reflex test?

1. Response to abdominal stimulus

2. Ability to maintain balance on one leg

3. Gag reflex by touching the back of the throat

4. Reaction to light on the eyes

The correct answer is: Gag reflex by touching the back of the throat

The pharyngeal reflex test specifically assesses the gag reflex, which is a vital protective mechanism that helps prevent aspiration and ensure airway safety. This reflex is elicited by stimulating the back of the throat, typically with a tongue depressor or similar instrument. When the area is touched, the expected response is a contraction of the pharyngeal muscles, leading to gagging or retching. This response is particularly important in critical care settings, as it helps evaluate a patient's ability to protect their airway. Other options focus on different reflexes or assessments unrelated to the pharyngeal reflex. For instance, testing the response to abdominal stimulus evaluates visceral reflexes; maintaining balance on one leg assesses vestibular and proprioceptive function; and the reaction to light tests the pupillary reflex associated with ocular function. Each of these serves a different purpose in assessing the nervous system or physical condition but does not pertain to the gag reflex directly.