Beta-blockers are used in all of the following except:-
In AV block, HR is 40 bpm and b blockers fuher causes cardiac depression. Therefore they are avoided in this condition. In all other 3 conditions, b blockers are used.
Essential tremors
AV block
Angina pectoris
Migraine prophylaxis
Hypeension, Arrhythmias, Dyslipidemia