A nurse is performing a focused assessment for vision on a client suspected of having vision loss. Which cranial nerve is the nurse assessing when determining if there are visual field or visual acuity deficits?
Cranial Nerve VIII
Cranial Nerve II
Cranial Nerve I
Cranial Nerve VII
The Correct Answer is B
Choice A Reason: This choice is incorrect. Cranial Nerve VIII is the vestibulocochlear nerve, which is responsible for hearing and balance. It does not affect vision or eye movements.
Choice B Reason: This is the correct choice. Cranial Nerve II is the optic nerve, which is responsible for transmitting visual information from the retina to the brain. It affects visual field and visual acuity, which are measures of peripheral and central vision, respectively.
Choice C Reason: This choice is incorrect. Cranial Nerve I is the olfactory nerve, which is responsible for smell. It does not affect vision or eye movements.
Choice D Reason: This choice is incorrect. Cranial Nerve VII is the facial nerve, which is responsible for facial expressions and taste. It does not affect vision or eye movements.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A Reason: This is incorrect because nystagmus is not a response to stimuli, but a condition that causes involuntary eye movements. Nystagmus can be caused by various factors, such as inner ear disorders, brain lesions, or drug toxicity, but not necessarily by cervical spine injury.
Choice B Reason: This is incorrect because decorticate positioning is a response to stimuli that indicates damage to the cerebral cortex or the corticospinal tract. Decorticate positioning is characterized by flexion of the arms and extension of the legs. It does not indicate cervical spine injury, which affects the spinal cord below the brainstem.
Choice C Reason: This is incorrect because lack of any response to stimuli can indicate various levels of brain damage or coma, but not specifically cervical spine injury. Lack of any response can also be influenced by other factors, such as sedation, hypothermia, or shock.
Choice D Reason: This is correct because decerebrate positioning is a response to stimuli that indicates damage to the brainstem or the upper cervical spine. Decerebrate positioning is characterized by extension and outward rotation of the arms and legs. It indicates a severe and life-threatening injury that can impair vital functions, such as breathing and blood pressure.
Correct Answer is A
Explanation
Choice A Reason: This is incorrect because Ménière's disease is not caused by an allergic response. Ménière's disease is a disorder of the inner ear that causes vertigo, tinnitus, hearing loss, and a feeling of fullness in the ear. The exact cause of Ménière's disease is unknown, but it may be related to fluid imbalance, infection, trauma, or autoimmune reaction.
Choice B Reason: This is correct because diphenhydramine can help offset the nauseous feeling. Diphenhydramine is an antihistamine that blocks histamine receptors in the brain and inner ear, which can reduce nausea and vomiting associated with vertigo.
Choice C Reason: This is correct because anticholinergics will help you rest. Anticholinergics are a class of drugs that block acetylcholine receptors in the brain and body, which can have sedative effects and reduce motion sickness. Diphenhydramine has anticholinergic properties.
Choice D Reason: This is correct because diphenhydramine can help reduce vomiting episodes. As mentioned above, diphenhydramine can reduce nausea and vomiting by blocking histamine receptors in the brain and inner ear.
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