Cholinomimetic drugs can be used for the treatment of all the following conditions EXCEPT: (A) Closed angle Glaucoma, (B) Bradycardia, (C) Cobra bite, (D) Myasthenia gravis
Answer is B. Ref: 7th edition KD Tripathi (page no:103) ACh hyperpolarizes SA nodal cells, as a results bradycardia occur.so cholinomimetics can't be used for bradycardia. Anticholinergics like atropine should be used for bradycardia Cardiac muscuranic receptor is M2 subtype