A nurse in an ophthalmology clinic is interviewing a client who was referred by his primary care provider for suspicion of cataracts. Which of the following findings is consistent with manifestations of cataracts?
Loss of peripheral vision
A decreased ability to perceive colors
Loss of central vision
Seeing bright flashes of light and floaters
The Correct Answer is B
Choice A reason: This is incorrect because loss of peripheral vision is not a manifestation of cataracts, but of glaucoma. Glaucoma is a condition that causes increased pressure inside the eye and damage to the optic nerve, which can lead to loss of vision in the outer edges of the visual field. The nurse should assess the client's intraocular pressure and visual field test results to rule out glaucoma.
Choice B reason: This is correct because a decreased ability to perceive colors is a manifestation of cataracts. Cataracts are a condition that causes clouding or opacity of the lens, which is the transparent structure behind the pupil that focuses light onto the retina. Cataracts can reduce the clarity and contrast of vision and make colors appear faded or yellowish. The nurse should ask the client about any changes in color perception or brightness of objects.
Choice C reason: This is incorrect because loss of central vision is not a manifestation of cataracts but of macular degeneration. Macular degeneration is a condition that affects the macula, which is the central part of the retina that is responsible for sharp and detailed vision. Macular degeneration can cause blurred or distorted central vision, difficulty reading or recognizing faces, or dark spots in the visual field. The nurse should assess the client's visual acuity and fundoscopic examination results to rule out macular degeneration.
Choice D reason: This is incorrect because seeing bright flashes of light and floaters is not a manifestation of cataracts but of retinal detachment. Retinal detachment is a condition that occurs when the retina, which is the layer of tissue at the back of the eye that converts light into nerve impulses, separates from its underlying support tissue. Retinal detachment can cause sudden flashes of light, floaters, or shadows in the visual field. The nurse should refer the client to an ophthalmologist immediately if retinal detachment is suspected.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
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.
Correct Answer is A
Explanation
Choice A Reason: This is the correct choice because a complete spinal cord injury is a condition where there is no motor or sensory function below the level of injury. The client will have paralysis of all four limbs (quadriplegia) and loss of bladder, bowel, and sexual function. The client will also have impaired thermoregulation, breathing, and blood pressure. The client will need 24-hour a day care to assist with mobility, hygiene, elimination, nutrition, and prevention of complications.
Choice B) Reason: This is incorrect because a client who is able to assist with transfer and perform self-care has a partial spinal cord injury, not a complete one. A partial spinal cord injury is a condition where there is some motor or sensory function below the level of injury. The degree of impairment depends on the extent and location of the damage.
Choice C Reason: This is incorrect because a client who is able to roll over independently has a lower spinal cord injury, not a complete one. A lower spinal cord injury is a condition where there is damage to the lumbar or sacral segments of the spinal cord. The client will have paralysis of the lower limbs (paraplegia) and some loss of bladder, bowel, and sexual function. The client will still have some control over the upper limbs and trunk.
Choice D Reason: This is incorrect because a client who is able to drive an electric wheelchair has an upper spinal cord injury, not a complete one. An upper spinal cord injury is a condition where there is damage to the cervical or thoracic segments of the spinal cord. The client will have paralysis of all four limbs (quadriplegia) and loss of bladder, bowel, and sexual function. However, the client may still have some movement or sensation in the shoulders, arms, or hands.
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