<prompt> Dopamine all of the following is true Except?Causes increase in GI IsehemiaPositive ionotropicImproves renal perfusionCauses Vasoconstriction  <response>: Ans. is a i.e., Causes increase in GI Ischemia o Dopamine acts on dopamine Di D2 and adrenergic a1 a2 31 receptors, with no action on p, receptors. o At lowest effective dose it stimulates D1 receptors in renal mesentric blood vessels -- improves renal and mesentric perfusion. o At moderately high doses it acts as 13, agonist -- positive ionotropic. o At high doses it activates a-adrenoreceptors -- vasoconstriction. 