A nurse is assessing a client’s cranial nerves as part of a neurological examination. Which of the following actions should the nurse take to assess cranial nerve III?
Eliciting the gag reflex
Checking the pupillary response to light
Observing for facial symmetry
Testing visual acuity
The Correct Answer is B
Choice A reason: Eliciting the gag reflex is not a valid way to assess cranial nerve III. The gag reflex is a protective mechanism that prevents choking or aspiration by triggering a contraction of the pharyngeal muscles when the back of the throat is stimulated. The gag reflex is mediated by cranial nerves IX and X, not III.
Choice B reason: Checking the pupillary response to light is a reliable way to assess cranial nerve III. The pupillary response to light is a reflex that causes the pupil to constrict when exposed to bright light and dilate when exposed to dim light. This reflex helps to regulate the amount of light that enters the eye and protects the retina from damage. The pupillary response to light is controlled by cranial nerve III, which innervates the sphincter pupillae muscle that constricts the pupil.
Choice C reason: Observing for facial symmetry is not a relevant way to assess cranial nerve III. Facial symmetry is the degree of similarity between the two halves of the face. Facial symmetry can be affected by various factors, such as genetics, aging, or facial nerve palsy. Facial nerve palsy is a condition that causes weakness or paralysis of the muscles that control facial expression. Facial nerve palsy is caused by damage to cranial nerve VII, not III.
Choice D reason: Testing visual acuity is not a sufficient way to assess cranial nerve III. Visual acuity is the ability to see fine details and distinguish objects at a distance. Visual acuity depends on various factors, such as the clarity of the lens and cornea, the shape of the eyeball, and the function of the retina. Visual acuity is mainly affected by cranial nerve II, which carries visual information from the retina to the brain. Cranial nerve III does not directly influence visual acuity, but it does innervate some of the muscles that move the eye and enable binocular vision.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: Rinse the mouth after administration. This answer is correct because rinsing the mouth after using inhaled beclomethasone can help prevent oral candidiasis, a fungal infection that can cause soreness, white patches, and bleeding in the mouth.
Choice B reason: Check the pulse after medication administration. This answer is incorrect because checking the pulse after using inhaled beclomethasone is not necessary, as this medication does not affect the heart rate or blood pressure. Inhaled beclomethasone is a corticosteroid that reduces inflammation and swelling in the airways.
Choice C reason: Limit caffeine intake. This answer is incorrect because limiting caffeine intake is not related to the use of inhaled beclomethasone, but rather to the management of asthma symptoms. Caffeine can act as a bronchodilator and improve lung function, but it can also cause nervousness, insomnia, and palpitations in some people.
Choice D reason: Take the medication with meals. This answer is incorrect because taking the medication with meals is not relevant to the use of inhaled beclomethasone, as this medication is not taken orally but by inhalation. Inhaled beclomethasone is delivered directly to the lungs, where it exerts its anti-inflammatory effect.
Correct Answer is C
Explanation
Choice A reason: Impaired sense of humor is not a common finding for a client who had a stroke involving the left cerebral hemisphere. Impaired sense of humor is more likely to occur after a stroke involving the right cerebral hemisphere, which is responsible for processing humor, irony, and sarcasm.
Choice B reason: Poor judgment is not a typical finding for a client who had a stroke involving the left cerebral hemisphere. Poor judgment is more likely to occur after a stroke involving the frontal lobe, which is involved in executive functions, such as planning, reasoning, and decision making.
Choice C reason: Intellectual impairment is a possible finding for a client who had a stroke involving the left cerebral hemisphere. The left cerebral hemisphere is dominant for language and analytical thinking in most people. A stroke affecting this hemisphere can impair the ability to speak, read, write, calculate, and comprehend information.
Choice D reason: Loss of depth perception is not a frequent finding for a client who had a stroke involving the left cerebral hemisphere. Loss of depth perception is more likely to occur after a stroke involving the occipital lobe, which is involved in visual processing, or the parietal lobe, which is involved in spatial awareness.
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