The nurse is evaluating a client who is receiving a thyroid hormone supplement. The client's TSH level has gone down, and the T3 and T4 levels have increased. The nurse knows that:
1. The TSH, T3, and T4 all should have increased.
2. A decrease in the TSH is undesirable.
3. An increase in the T3 and T4 is undesirable.
4. A decrease in the TSH is desirable.
Correct Answer: 4
Rationale 1: All three levels should not increase.
Rationale 2: The decrease in the TSH is desirable.
Rationale 3: The increase in the T3 and T4 is desirable, as they indicate adequate or more than adequate levels.
Rationale 4: The decrease in the TSH is desirable, and is the result of negative feedback to the hypothalamus from the thyroid gland.
Global Rationale: The decrease in the TSH is desirable, and is the result of negative feedback to the hypothalamus from the thyroid gland. The increase in the T3 and T4 is desirable, as they indicate adequate or more than adequate levels.
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