A patient, Sunder is admitted to the emergency with severe bradycardia following drug overdose. The concerned drug was being taken for hypeension. Which of the following cannot be the drug?: (A) Clonidine, (B) Hydralazine, (C) Propanolol, (D) Reserpine
Answer is B. Hydralazine is a vasodilator and can result in reflex tachycardia. All other drugs listed (clonidine, propanolol, reserpine) decrease the activity of sympathetic system and can result in bradycardia.