A 65-year-old patient presents to the emergency department with sudden onset of flashes of light, a shadow over the visual field, and floaters in their right eye. What is the most likely diagnosis?
Macular degeneration
Cataracts
Glaucoma
Retinal detachment
The Correct Answer is D
Choice A Reason:
Macular degeneration primarily affects central vision and is characterized by a gradual loss of vision rather than sudden symptoms. It does not typically cause flashes of light, shadows over the visual field, or floaters. These symptoms are more indicative of a retinal issue.
Choice B Reason:
Cataracts cause clouding of the lens, leading to blurred vision and difficulty seeing at night. However, they do not cause sudden flashes of light, shadows over the visual field, or floaters. Cataracts develop gradually and do not present with acute symptoms.
Choice C Reason:
Glaucoma is associated with increased intraocular pressure, which can lead to gradual loss of peripheral vision. While acute angle-closure glaucoma can cause sudden symptoms, it typically presents with severe eye pain, headache, and nausea, rather than flashes of light and floaters.
Choice D Reason:
Retinal detachment is characterized by the sudden onset of flashes of light, floaters, and a shadow or curtain over the visual field. These symptoms occur because the retina is pulling away from its normal position, which can lead to vision loss if not treated promptly. Immediate medical attention is required to prevent permanent vision loss.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A Reason:
Starting the patient on a high-calcium diet is not the most appropriate initial intervention for multiple myeloma. Multiple myeloma often leads to hypercalcemia, a condition where calcium levels in the blood are abnormally high due to bone breakdown. Increasing calcium intake can exacerbate this condition, leading to further complications such as kidney stones and impaired kidney function. Therefore, this choice is not suitable for managing the patient’s immediate symptoms.
Choice B Reason:
Encouraging the patient to increase physical activity to build bone strength is beneficial in the long term but not the most appropriate initial intervention. While weight-bearing exercises can help strengthen bones, they should be introduced gradually and under medical supervision to avoid fractures and other injuries. The immediate priority is to manage the patient’s pain and fatigue effectively.
Choice C Reason:
Advising the patient to limit fluid intake to prevent kidney damage is not appropriate. In fact, adequate hydration is crucial for patients with multiple myeloma to help flush out toxins and prevent kidney damage. Limiting fluid intake can lead to dehydration and worsen kidney function, which is already at risk due to the disease.
Choice D Reason:
Administering prescribed analgesics and educating the patient about pain management strategies is the most appropriate initial intervention. Pain management is a critical aspect of care for multiple myeloma patients, as bone pain is a common and debilitating symptom. Effective pain management improves the patient’s quality of life and allows them to participate in other therapeutic activities. Education on pain management strategies, including the use of medications, physical therapy, and complementary therapies, empowers the patient to manage their symptoms effectively.
Correct Answer is A
Explanation
Choice A Reason:
Administering IV levothyroxine is the priority intervention for a patient with myxedema coma. Myxedema coma is a severe form of hypothyroidism that requires immediate thyroid hormone replacement to correct the deficiency and stabilize the patient’s condition. Intravenous levothyroxine is preferred because it provides a rapid increase in thyroid hormone levels, which is crucial for reversing the life-threatening symptoms of myxedema coma, such as hypothermia, bradycardia, and altered mental status.
Choice B Reason:
Starting broad-spectrum antibiotics is not the primary intervention for myxedema coma. While infections can precipitate myxedema coma and should be treated if present, the immediate priority is to address the severe hypothyroidism with thyroid hormone replacement. Antibiotics may be administered if an infection is suspected or confirmed, but they do not directly address the underlying thyroid hormone deficiency.
Choice C Reason:
Administering corticosteroids immediately is important but not the highest priority. Corticosteroids are often given to patients with myxedema coma to treat potential adrenal insufficiency, which can coexist with severe hypothyroidism. However, the primary intervention remains the administration of thyroid hormone replacement to correct the hypothyroid state.
Choice D Reason:
Initiating fluid restriction is not appropriate for managing myxedema coma. Patients with myxedema coma often require careful fluid management to address potential hyponatremia and maintain hemodynamic stability. Fluid restriction is not a standard intervention for this condition and does not address the critical need for thyroid hormone replacement.
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