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Paper II — 2024 December (Supplementary) (2019 Scheme) — Qxiv

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Paper II
2024 December (Supplementary) (2019 Scheme) · 100 marks · 180 min

Question

The beta-adrenergic blockers preferred in hyperthyroidism is:

  • a) Propranolol
  • b) Atenolol
  • c) Metoprolol
  • d) Bisoprolol
Qxiv1 marksMCQs

Answer

Correct answer: a) Propranolol

Propranolol, a non-selective beta-blocker, is preferred in hyperthyroidism because — beyond controlling the adrenergic symptoms (tachycardia, tremor, anxiety) common to all beta-blockers — it additionally inhibits peripheral T4-to-T3 conversion at higher doses, giving an extra benefit the cardioselective agents (atenolol, metoprolol, bisoprolol) do not share.

  1. 1Adrenergic System

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