ATI RN
Herzing University NSG159 Questions
Question 1 of 1
Which mechanism best explains Levothyroxine’s effect?
Correct Answer: A
Rationale: Levothyroxine is a synthetic form of thyroxine (T4), which is converted peripherally to the active hormone triiodothyronine (T3). It binds to nuclear thyroid receptors, modulating gene expression to increase protein synthesis, oxygen consumption, and metabolic rate. The observed improvement in energy and normalization of heart rate reflect restoration of euthyroid state. Unlike antithyroid agents, levothyroxine replaces deficient hormone and does not inhibit thyroid synthesis or receptor binding, making it the treatment of choice for hypothyroidism.
Question 2 of 1
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