LPN Pharmacology Practice Test Related

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A client has been taking levothyroxine for 6 months. Which of the following findings indicates that the medication is effective?

  • A. Weight gain
  • B. Increased heart rate
  • C. Decreased TSH levels
  • D. Elevated blood pressure
Correct Answer: C

Rationale: In a client taking levothyroxine for thyroid hormone replacement, decreased TSH levels indicate that the medication is effective. TSH levels decrease as the thyroid hormone levels are adequately replaced by levothyroxine, signaling a positive response to treatment. Choices A, B, and D are incorrect because weight gain, increased heart rate, and elevated blood pressure are not expected findings indicating the effectiveness of levothyroxine therapy. Weight gain may suggest inadequate dosing, while increased heart rate and elevated blood pressure could indicate over-replacement or side effects of the medication.