A client does not understand why vision loss due to glaucoma is irreversible. What is the nurse's best explanation?
Once the tissue has necrosed from high pressure, it does not regenerate.
Glaucoma always leads to permanent blindness.
Once retinal detachment occurs, it does not return to its normal state.
Once bacterial infection has caused damage, the tissue does not regenerate.
The Correct Answer is A
Choice A reason: Once the tissue has necrosed from high pressure, it does not regenerate is the best explanation, because it describes the mechanism and outcome of glaucoma. Glaucoma is a condition that causes increased intraocular pressure, which damages the optic nerve and the retina, the tissues that are responsible for transmitting and processing visual information. Once these tissues are necrosed, or dead, they do not regenerate, or grow back, resulting in irreversible vision loss.
Choice B reason: Glaucoma always leads to permanent blindness is not a good explanation, because it is inaccurate and pessimistic. Glaucoma does not always lead to permanent blindness, but rather to progressive vision loss that can be prevented or slowed down with early diagnosis and treatment. Glaucoma can cause peripheral vision loss, tunnel vision, or blind spots, but not necessarily complete blindness.
Choice C reason: Once retinal detachment occurs, it does not return to its normal state is not a good explanation, because it is irrelevant and misleading. Retinal detachment is a condition that occurs when the retina separates from the underlying layer of blood vessels, which can cause vision loss or blindness. However, retinal detachment is not caused by glaucoma, nor is it a common complication of glaucoma. Retinal detachment can sometimes be repaired with surgery, depending on the extent and duration of the detachment.
Choice D reason: Once bacterial infection has caused damage, the tissue does not regenerate is not a good explanation, because it is incorrect and confusing. Bacterial infection is not a cause or a consequence of glaucoma, but rather a separate condition that can affect the eye. Bacterial infection can cause inflammation, pain, discharge, or redness in the eye, but not necessarily vision loss or tissue necrosis. Bacterial infection can usually be treated with antibiotics, which can prevent or reverse the damage.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: This is not the correct answer because opioids are a class of medications that act on the opioid receptors in the brain and spinal cord to reduce pain perception and emotional response. Opioids do not have a direct effect on tissue inflammation or bone healing, but they can cause side effects such as constipation, nausea, sedation, respiratory depression, and addiction.
Choice B reason: This is not the correct answer because anticoagulants are a class of medications that prevent or reduce the formation of blood clots by interfering with the clotting factors or platelets. Anticoagulants do not have a direct effect on tissue inflammation or bone healing, but they can increase the risk of bleeding and hematoma formation, which can impair the blood supply and oxygen delivery to the injured tissues.
Choice C reason: This is the correct answer because NSAIDs are a class of medications that inhibit the enzyme cyclooxygenase (COX), which is involved in the synthesis of prostaglandins, which are inflammatory mediators that cause pain, swelling, and fever. NSAIDs can decrease tissue inflammation and pain, but they can also delay bone healing by reducing the formation of osteoblasts, which are cells that build new bone tissue.
Choice D reason: This is not the correct answer because narcotics are another term for opioids, which are a class of medications that act on the opioid receptors in the brain and spinal cord to reduce pain perception and emotional response. Narcotics do not have a direct effect on tissue inflammation or bone healing, but they can cause side effects such as constipation, nausea, sedation, respiratory depression, and addiction.
Correct Answer is C
Explanation
Choice A reason: "In order to avoid flareups of Raynaud's, ensure to keep cool." is not a correct answer, because it can worsen the symptoms of Raynaud's phenomenon. Raynaud's phenomenon is a condition that causes the blood vessels in the fingers and toes to narrow and spasm in response to cold or stress, resulting in reduced blood flow and color changes. Keeping cool can trigger or aggravate the spasms and decrease the blood flow.
Choice B reason: "In order to avoid flareups of Raynaud's, ensure you wear sunscreen." is not a correct answer, because it is not related to Raynaud's phenomenon. Sunscreen is a protective measure for clients with lupus, who may have increased sensitivity to ultraviolet rays and increased risk of skin damage and flareups. However, sunscreen does not prevent or treat Raynaud's phenomenon, which is caused by cold or stress, not by sun exposure.
Choice C reason: "In order to avoid flareups of Raynaud's, ensure you wear gloves in winter." is a correct answer, because it can help prevent or reduce the symptoms of Raynaud's phenomenon. Wearing gloves in winter can keep the hands warm and prevent the blood vessels from narrowing and spasming due to cold. This can improve the blood flow and prevent color changes, numbness, pain, or ulcers in the fingers.
Choice D reason: "In order to avoid flareups of Raynaud's, ensure you brush your teeth for two minutes." is not a correct answer, because it is not related to Raynaud's phenomenon. Brushing the teeth for two minutes is a good oral hygiene practice that can prevent dental problems, such as plaque, cavities, or gingivitis. However, brushing the teeth does not affect the blood vessels in the fingers and toes, nor does it prevent or treat Raynaud's phenomenon.
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