<prompt> Vasomotor reversal of dale is demonstrated byFall in blood pressure by high dose intravenous AchIncrease in blood pressure following administration of IV propranololFall in blood pressure by ganglionic blockerFall in blood pressure by adrenaline pretreated with phentolamine  <response>: Ans. d Fall in blood pressure by adrenaline pretreated with phentolamineRef: Ganong, 25th edp.353If the subject is given a blocker and then if epinephrine is injected, vasodilation and decrease in BP is seen. This effect is called Vasomotor reversal of Dale 