This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sympathetic System, Subject name: Pharmacology
Propanolol is useful in the treatment of all of the following EXCEPT: 
Select and explain. 
A. Angina, B. Paial atrioventricular block, C. Idiopathic hyperophic subaoic cardiomyopathy, D. Familial tremor
B: Paial atrioventricular block
Answer: B: Paial atrioventricular block 
Explanation: b blockers can be used in - HTN/MI Angina Cardiac arrythmias Pheochromocytoma Thyrotoxicosis Migraine Anxiety Essential tremor Glaucoma Hyperophic obstructive cardiomyopathy.