Contraindications of beta blockers are: (A) Asthma, (B) Myocardial infarction, (C) Hypeension, (D) Arrhythmia
Answer is A. Ref:KD Tripathi pharmacology 7th edition (page.no: 146) the beta blocker is contraindicated in asthma because of beta 2 blocking effect (beta 2 agonist cause bronchodilation). Uses of beta blockers are Hypeension, Myocardial infarction, Pheochromocytoma, Cardiac arrhythmias, Thyrotoxicosis, MIGRAINE, essential tremors etc