A 32-year-old woman with newly diagnosed Graves disease presents with tremor, palpitations, and anxiety. Vital signs show BP 148/92 mmHg, HR 112 bpm, RR 18, temperature 37.8°C, and SpO2 98%. TSH is suppressed at 0.01 mIU/L with elevated free T4 of 28 pg/dL. She denies chest pain. She receives a medication for rapid symptomatic control while awaiting definitive therapy. Which of the following additional effects is most characteristic of this medication?
- A)Increased release of thyroid hormone from follicles
- B)Competitive inhibition of thyroid peroxidase
- C)Destruction of thyroid tissue by beta emission
- D)Decreased peripheral conversion of T4 to T3GABARITO
- E)Blockade of sodium iodide uptake
Explicação
Propranolol is a nonselective beta blocker used for rapid symptomatic control of hyperthyroidism. In addition to reducing tremor and palpitations, it decreases peripheral conversion of T4 to the more active T3. Ver explicação completa e trilha adaptativa →