The nurse is preparing to assess the motor function of the client's trigeminal nerve. Which of the following tests would be most appropriate for the nurse to use?
Have the client smile, frown, and puff out their cheeks
Palpate the masseter muscles when the client clenches their teeth
Assess constriction of the client's pupils with direct and indirect light
Ask the patient to turn their head left and right with resistance
The Correct Answer is B
A) Have the client smile, frown, and puff out their cheeks: This test assesses the facial nerve (cranial nerve VII), not the trigeminal nerve (cranial nerve V). While important for evaluating facial movement, it does not specifically test the motor function of the trigeminal nerve, which is responsible for mastication.
B) Palpate the masseter muscles when the client clenches their teeth: This is the correct test for assessing the motor function of the trigeminal nerve. The trigeminal nerve innervates the muscles responsible for chewing, and palpating the masseter muscles during clenching allows the nurse to evaluate muscle strength and function. It provides insight into the motor capabilities associated with this cranial nerve.
C) Assess constriction of the client's pupils with direct and indirect light: This test evaluates the function of the optic nerve (cranial nerve II) and the oculomotor nerve (cranial nerve III). It does not assess the trigeminal nerve and is not relevant for this assessment.
D) Ask the patient to turn their head left and right with resistance: This action tests the spinal accessory nerve (cranial nerve XI), which is involved in neck movement. It does not relate to the function of the trigeminal nerve, making it an inappropriate choice for this specific assessment.
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Correct Answer is C
Explanation
A) Motor component of IV (Trochlear): The trochlear nerve primarily controls the superior oblique muscle of the eye, which is responsible for downward and lateral eye movements. The findings described do not relate to eye movement and therefore do not indicate dysfunction of this nerve.
B) Motor and sensory components of XI (Accessory): The accessory nerve innervates the sternocleidomastoid and trapezius muscles, primarily affecting head rotation and shoulder elevation. The symptoms noted in the assessment do not pertain to these muscle functions, so this option is not correct.
C) Motor component of VII (Facial): The signs of asymmetry in frowning, uneven eyebrow lifting, sagging eyelids, and air escaping when puffing the cheeks are characteristic of dysfunction in the facial nerve (cranial nerve VII). This nerve controls the muscles of facial expression, and impairment would lead to the described asymmetrical movements.
D) Motor component of X (Vagus) and sensory component of XII (Hypoglossal): The vagus nerve affects autonomic functions and some swallowing muscles, while the hypoglossal nerve controls tongue movements. Neither nerve is primarily responsible for the facial expressions described in the assessment findings, making this option incorrect.
Correct Answer is B
Explanation
A) Dietary history from the patient: This information is subjective as it relies on the patient’s personal account of their eating habits, which may be influenced by memory or perception. It does not provide measurable data.
B) BMI (Body Mass Index): This is an objective measure calculated from a person’s height and weight. It provides quantifiable data that can be used to assess nutritional status and potential health risks associated with body weight.
C) Patient history of alcohol intake: This information is subjective as it is based on the patient’s self-report. It does not provide direct evidence and may vary depending on how the patient perceives their alcohol consumption.
D) Patient complaint of weight loss: This is also subjective data, as it relies on the patient’s perception of their weight change. It does not provide concrete measurements and can be influenced by various factors such as mood or misunderstanding of the situation.