Which laboratory value is expected with Graves' disease?
Decreased calcium
Decreased T4
Increased thyroid stimulating hormone (TSH)
Increased T3
The Correct Answer is D
Choice A reason: Graves’ disease, a form of hyperthyroidism, does not typically cause decreased calcium. It may lead to hypercalcemia due to increased bone resorption from elevated thyroid hormone levels, which enhance osteoclast activity, making decreased calcium an incorrect laboratory finding for this condition.
Choice B reason: Graves’ disease is characterized by increased thyroid hormone production, including elevated T4 due to autoimmune stimulation of the thyroid. Decreased T4 is associated with hypothyroidism, not hyperthyroidism, making this choice incorrect as it contradicts the pathophysiology of Graves’ disease.
Choice C reason: Increased TSH is seen in primary hypothyroidism, where the thyroid is underactive. In Graves’ disease, TSH is typically decreased due to negative feedback from elevated thyroid hormones (T3 and T4), making this choice incorrect for the expected laboratory profile.
Choice D reason: Graves’ disease causes hyperthyroidism, with increased production of thyroid hormones, including T3, due to autoantibodies stimulating TSH receptors. Elevated T3 levels drive metabolic symptoms like weight loss and tachycardia, making this the correct laboratory finding for Graves’ disease.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","C","E"]
Explanation
Choice A reason: Stabilizing the wrist with an elastic wrap supports the injured ligaments, reducing movement and further damage. It promotes healing by maintaining alignment, making this a correct action for acute wrist sprain management.
Choice B reason: Applying a warm pack increases blood flow, which may worsen swelling in an acute sprain. Cold therapy is recommended to reduce inflammation and pain, making this choice incorrect for acute sprain management.
Choice C reason: Elevating the wrist above the heart reduces swelling by decreasing hydrostatic pressure, allowing fluid to drain from the injury site. This minimizes edema, making this a correct action for acute wrist sprain.
Choice D reason: Frequent massage may aggravate an acute sprain by increasing inflammation and pain. Rest and immobilization are preferred to promote healing, making this choice incorrect for acute wrist sprain management.
Choice E reason: Resting the wrist prevents further injury to damaged ligaments, allowing healing and reducing inflammation. Avoiding strain is critical in acute sprains, making this a correct action for wrist sprain recovery.
Correct Answer is D
Explanation
Choice A reason: Heart failure is a consequence of CAD, not a cause. It results from impaired cardiac function, often due to ischemia from CAD, but does not directly contribute to coronary artery plaque formation, making this incorrect.
Choice B reason: Pneumonia affects the lungs, causing infection and inflammation, not coronary arteries. It may increase cardiac demand, but it does not cause atherosclerosis or CAD, making this choice incorrect for CAD development.
Choice C reason: Low blood pressure does not cause CAD; it may result from cardiac issues. CAD is driven by atherosclerosis from risk factors like diabetes, not hypotension, making this choice incorrect for causing CAD.
Choice D reason: Diabetes causes CAD by promoting atherosclerosis through hyperglycemia, which damages endothelial cells, increases inflammation, and accelerates plaque formation in coronary arteries. This is a major risk factor, making this the correct choice.
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