This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thyroid Gland, Subject name: Surgery
[{'content': "Preoperative medication for thyrotoxicosis are all except \nSelect and explain. \nA. Propranolol, B. Carbimazole, C. Lugol's Iodine, D. Nifedipine", 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. (d) NifedipineRef: Bailey and Love 27th edition, Page 813Preoperative preparation of Thyrotoxic patient:* Aim of thyrotoxic patient is to make the patient euthyroid:# Carbimazole 30-40mg per day is the drug of choice for preparation# For pregnant patients and patient's with leucopenia we prefer propyl thiouracil# Last dose of carbimazole is given on the day before surgery in evening# Propranolol 40mg, three times daily or Nadolol 160mgOD is added for fast preparation for surgery# Propranolol is given on day of surgery and continued for 7 days postoperative.# Lugol's Iodine (Iodide) is given last 10 days to make gland firmer and reduce the vascularity of gland", 'role': 'assistant'}]