In the treatment of severe bradycardia, all of the following can be the best modality of treatment except-
atropine,pacing,isoproterenol can be used to increase hea rate in bradycardia diltiazem is a calcium channel blocker used to reduce hea rate Ref Harrison 20th edition pg 1456
Atropine
Pacing
Isoproterenol
Diltiazem
C.V.S