The nurse in the emergency room is reviewing the health record of a client who is being evaluated for Graves' disease. The nurse should identify which of the following laboratory results is an expected finding?
Decreased thyrotropin receptor antibodies
Decreased free thyroxine index
Decreased triiodothyronine
Decreased thyroid-stimulating hormone (TSH)
The Correct Answer is D
A. Decreased thyrotropin receptor antibodies: Graves' disease is characterized by the presence of thyrotropin receptor antibodies, so they are typically increased, not decreased.
B. Decreased free thyroxine index: Graves' disease typically results in increased levels of thyroid hormones, not decreased.
C. Decreased triiodothyronine: T3 levels may be elevated in Graves' disease due to increased thyroid hormone production.
D. Decreased thyroid-stimulating hormone (TSH): Graves' disease causes excessive thyroid hormone production, leading to suppressed TSH levels. TSH is typically low in hyperthyroidism because the thyroid gland is overactive and not being stimulated by the pituitary gland.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. A 45-year-old female who has a family history of autoimmune disorders. Autoimmune disorders can increase the risk of some thyroid conditions, but not necessarily hyperthyroidism.
B. A 73-year-old male who has an iodine deficiency: Iodine deficiency can lead to goiter and hypothyroidism but is not a common cause of hyperthyroidism.
C. A 25-year-old female who has metabolic syndrome: Metabolic syndrome is not directly linked to thyroid dysfunction.
D. A 35-year-old male who has Graves' disease: Graves’ disease is an autoimmune disorder that leads to overproduction of thyroid hormones, resulting in hyperthyroidism..
Correct Answer is ["22"]
Explanation
Dobutamine infusion calculation:
- Client weight: 220 pounds
- Dobutamine dose ordered: 5.5 mcg/kg/min
- Dobutamine concentration: 750 mg in 500 mL
- Conversion factor: 1 mg = 1000 mcg
- 1 kg = 2.2 pounds
Calculations:
- Convert client weight to kg: 220 lbs / 2.2 lbs/kg = 100 kg
- Calculate mcg/min: 5.5 mcg/kg/min × 100 kg = 550 mcg/min
- Calculate mcg/hr: 550 mcg/min × 60 min/hr = 33000 mcg/hr
- Calculate mL/hr: Dobutamine concentration is 750 mg/500 mL, which equals 1500 mcg/mL.
- mL/hr = 33000 mcg/hr / 1500 mcg/mL = 22 mL/hr
Answers:
- mcg/min: 550 mcg/min
- mcg/hr: 33000 mcg/hr
- mL/hr: 22 mL/hr
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