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 A
Explanation
Choice A Reason:
Monitoring platelet counts and assessing for signs of bleeding is crucial for managing thrombocytopenia. Thrombocytopenia is characterized by a low platelet count, which increases the risk of bleeding. Regular monitoring helps in detecting any significant drops in platelet levels, allowing for timely interventions to prevent severe bleeding. Assessing for signs of bleeding, such as petechiae, bruising, or nosebleeds, is essential to manage the condition effectively and prevent complications.
Choice B Reason:
Administering aspirin to manage pain and prevent clot formation is not appropriate for patients with thrombocytopenia. Aspirin is an antiplatelet agent that inhibits platelet function, which can exacerbate bleeding tendencies in patients with low platelet counts. Using aspirin in this context could increase the risk of bleeding and is therefore contraindicated.
Choice C Reason:
Administering a diuretic to reduce fluid retention and swelling is not relevant for managing thrombocytopenia. Diuretics are used to manage conditions like hypertension and edema but do not address the underlying issue of low platelet counts. In fact, diuretics can lead to electrolyte imbalances, which may complicate the patient’s condition further.
Choice D Reason:
Encouraging the patient to increase physical activity to improve circulation is not a priority intervention for thrombocytopenia. While physical activity is generally beneficial for overall health, it can increase the risk of trauma and bleeding in patients with low platelet counts. It is important to avoid activities that could lead to injury and bleeding in these patients.
Correct Answer is A
Explanation
Choice A Reason:
Testing blood glucose levels every 6 hours during illness is crucial for managing type 1 diabetes. Illness can cause blood glucose levels to fluctuate unpredictably, and frequent monitoring helps in making timely adjustments to insulin doses and dietary intake. This practice helps prevent both hyperglycemia and hypoglycemia, ensuring better overall control of diabetes during periods of illness.
Choice B Reason:
Administering the usual daily dose of insulin is important even during illness. Skipping insulin doses can lead to dangerously high blood glucose levels and increase the risk of diabetic ketoacidosis (DKA). It is essential to continue taking insulin as prescribed and to consult with a healthcare provider if any adjustments are needed based on blood glucose readings.
Choice C Reason:
Limiting juices, soda, and gelatin is not typically recommended during illness for patients with type 1 diabetes. These items can be useful for maintaining hydration and providing quick sources of carbohydrates if the patient is unable to eat solid foods. Instead of limiting these items, it is more important to monitor carbohydrate intake and adjust insulin doses accordingly.
Choice D Reason:
Reporting a blood glucose level greater than 300 is critical for preventing complications. High blood glucose levels can indicate the onset of DKA, a serious condition that requires immediate medical attention. Promptly reporting elevated blood glucose levels allows for timely intervention and management to prevent severe complications.
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