This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: ANS, Subject name: Pharmacology
[{'content': 'Beta-blockers are used in all of the following conditions except:- \nSelect and explain. \nA. Essential tremors, B. AV block, C. Angina pectoris, D. Migraine prophylaxis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Beta blockers are contra-indicated in AV block Beta-blockers are not given in AV blocks because they may precipitate and cause complete hea block USES OF BETA-BLOCKERS Cardiac (due to Beta 1 blockade) Extra cardiac (due to Beta 2 blockade) Hypeension PLAY : Performance anxiety , Pheochromocytoma (after a blockade) Classical angina The: Thyroid (Hypehyroidism) Myocardial infarction G: Glaucoma A: Akathisia, Alcohol and Opioid withdrawal M: Migraine prophylaxis Supraventricular arrhythmias E: Essential tremors Chronic CHF Hyperophic obstructive cardiomyopathy (DOC)', 'role': 'assistant'}]