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 C
Explanation
Choice A Reason: Obtaining the client's blood glucose every 12 hr is not enough, as the nurse should monitor it more frequently, at least every 4 to 6 hr, to prevent hyperglycemia or hypoglycemia. TPN is a high-glucose solution that can affect the blood sugar levels.
Choice B Reason: Changing the IV site dressing every 4 days is not enough, as the nurse should change it daily or as needed to prevent infection. TPN is a high-risk solution that can introduce microorganisms into the bloodstream.
Choice C Reason: This is the correct choice. Changing the IV tubing every 24 hr is recommended to prevent infection and maintain sterility. TPN is a complex solution that can support bacterial growth and contamination.
Choice D Reason: Weighing the client every other day is not enough, as the nurse should weigh the client daily to evaluate fluid balance and nutritional status. TPN can cause fluid retention or depletion, as well as weight gain or loss.
Correct Answer is D
Explanation
Choice A reason: This is incorrect because slow cautious behaviors are more consistent with a stroke involving the right hemisphere. The right hemisphere controls spatial awareness, creativity, and intuition. A stroke affecting this hemisphere can cause impulsivity, poor judgment, and denial of deficits.
Choice B reason: This is incorrect because loss of depth perception is more consistent with a stroke involving
the right hemisphere. The right hemisphere controls visual-spatial perception, which includes depth perception, distance estimation, and object recognition. A stroke affecting this hemisphere can cause difficulty in navigating space, judging distances, and identifying objects.
Choice C reason: This is incorrect because the overestimation of abilities is more consistent with a stroke involving
the right hemisphere. The right hemisphere controls emotional regulation, self-awareness, and insight. A stroke affecting this hemisphere can cause euphoria, lack of insight, and unrealistic expectations.
Choice D reason: This is the correct answer because hemianopsia is consistent with a stroke involving
the left hemisphere. The left hemisphere controls language, logic, and analysis. A stroke affecting this hemisphere can cause hemianopsia, which is the loss of vision in half of the visual field. This can affect reading, writing, and communication skills.
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