question: Q:A 23-year-old primigravida presents to her physician’s office at 12 weeks gestation complaining of increased sweating and palpitations for the last week. She does not have edema or dyspnea, and had no pre-existing illnesses. The patient says that the symptoms started a few days after several episodes of vomiting. She managed the vomiting at home and yesterday the vomiting stopped, but the symptoms she presents with are persistent. The pre-pregnancy weight was 54 kg (119 lb). The current weight is 55 kg (121 lb). The vital signs are as follows: blood pressure 130/85 mm Hg, heart rate 113/min, respiratory rate 15/min, and temperature 37.0℃ (98.6℉). The physical examination is significant for diaphoresis, an irregular heartbeat, and a fine resting tremor of the hands. The neck is not enlarged and the thyroid gland is not palpable. The ECG shows sinus tachyarrhythmia. The thyroid panel is as follows:
  Thyroid stimulating hormone (TSH) < 0.1 mU/L
  Total T4 178 nmol/L
  Free T4 31 pmol/L
  Which of the following is indicated?? 
  {'A': 'Ensure proper hydration and prescribe a beta-blocker', 'B': 'Manage with propylthiouracil', 'C': 'Schedule a subtotal thyroidectomy', 'D': 'Prescribe methimazole', 'E': 'Recommend iodine radioablation'},