Which of these statements best describes how the nurse should assess the function of cranial nerve X?
Ask the patient to say "ahh" & watch for movement of the soft palate & uvula.
Have the patient stick out the tongue and observe for tremors or pulling to one side.
Use a wisp of cotton to brush over the eyelashes and observe for blinking.
With eyes closed, touch various areas on the face with a wisp of cotton and have patient identify where touched.
The Correct Answer is A
Choice A rationale
Cranial nerve X, the vagus nerve, plays a crucial role in innervating the pharynx and larynx, influencing speech and swallowing. Observing the movement of the soft palate and uvula when the patient says "ahh" assesses the motor function of the vagus nerve, as its bilateral innervation is essential for the symmetrical elevation of these structures.
Choice B rationale
Having the patient stick out the tongue and observing for tremors or pulling to one side assesses the function of cranial nerve XII, the hypoglossal nerve. This nerve controls the intrinsic and extrinsic muscles of the tongue, and abnormalities can indicate nerve damage or neurological issues affecting tongue movement.
Choice C rationale
Using a wisp of cotton to brush over the eyelashes and observing for blinking assesses the corneal reflex, which involves both cranial nerve V (trigeminal, sensory) and cranial nerve VII (facial, motor). This test evaluates the integrity of the reflex arc rather than solely cranial nerve X.
Choice D rationale
With eyes closed, touching various areas on the face with a wisp of cotton and having the patient identify where touched assesses the sensory function of cranial nerve V, the trigeminal nerve. This nerve is responsible for transmitting touch, pain, and temperature sensations from the face.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale
Asking which client is supposed to have medications compromises patient privacy and could lead to medication errors if an incorrect patient self-identifies. Proper patient identification is a fundamental safety measure, requiring objective verification to ensure the right medication is administered to the right patient.
Choice B rationale
Stating the patient's name and expecting a confirmation ("You are Mrs. Wilson, aren't you?") is a leading question and does not independently verify identity. A patient could respond affirmatively without truly being Mrs. Wilson, increasing the risk of medication errors by not adhering to objective verification protocols.
Choice C rationale
Asking if anyone knows Mrs. Wilson is an inappropriate and unprofessional method for patient identification. It breaches patient confidentiality and does not provide a reliable or direct means of verifying the intended recipient of medication, potentially leading to significant medication safety issues.
Choice D rationale
Checking the client's identification bracelets while the client states their name provides two independent identifiers, which is a standard and highly reliable method for patient identification. This dual verification minimizes the risk of medication errors by confirming both physical identification and the patient's verbal confirmation before administration.
Correct Answer is D
Explanation
Choice A rationale
Asking the patient to turn their head side-to-side against resistance assesses the accessory nerve (cranial nerve XI), which innervates the sternocleidomastoid and trapezius muscles. This action tests muscle strength and integrity of the nerve pathways responsible for head and shoulder movement.
Choice B rationale
Asking the patient to stick out the tongue and move it side-to-side from midline assesses the hypoglossal nerve (cranial nerve XII). This nerve is responsible for the motor control of the intrinsic and extrinsic muscles of the tongue, crucial for speech articulation and swallowing.
Choice C rationale
Asking the patient to read the smallest set of letters on a Snellen eye chart assesses visual acuity, primarily testing the optic nerve (cranial nerve II) and the visual pathways. This evaluates the patient's ability to discern details at a distance.
Choice D rationale
Asking the patient to identify the smell of vanilla and orange peel directly assesses the olfactory nerve (cranial nerve I). This nerve is responsible for the sense of smell, and presenting distinct, non-irritating odors allows for the evaluation of its function and patency.
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