Paper II — 2025 March (Supplementary (SAY)) (2019 Scheme) — Qxix
3 min read
Paper II
2025 March (Supplementary (SAY)) (2019 Scheme) · 100 marks · 180 min
Question
Assertion (A): Propranolol is often used to manage symptoms of hyperthyroidism.
Reason (R): Propranolol is a non-selective beta-blocker that reduces the symptoms of hyperthyroidism
by blocking the effects of excessive thyroid hormones on the heart.
Assertion) Propranolol is often used to manage symptoms of hyperthyroidism.
Reason) Propranolol is a non-selective beta-blocker that reduces the symptoms of hyperthyroidism
by blocking the effects of excessive thyroid hormones on the heart.
a) Both A and R are true and R is the correct explanation of A
c) A is true but R is false
b) Both A and R are true and R is not the correct explanation of A
d) A is false but R is true
Qxix1 marksMCQs (A/R)
Answer
Correct answer: a) Both A and R are true and R is the correct explanation of A
Both statements are true, and R correctly explains A: thyroid hormone excess upregulates/sensitizes cardiac beta-adrenergic receptors; propranolol’s non-selective beta-blockade directly counters this, rapidly controlling tachycardia, tremor, and anxiety symptoms of hyperthyroidism, independent of and much faster than the thioamides’ effect on hormone synthesis.
