<prompt> Renal dose of dopamine is-2.5 ligkgmin5-10 ugkgmin10-20 pgkgmin1-2 pgkgmin  <response>: Ans. is d i.e., 1-2 ggkgmin Dopamine produces dose dependent action: i At low dose 1-2 ugkgmin causes dilation of renal and mesentric vessels often referred as renal dose. ii At moderately high dose 2-10 ,ugkgmin produces a positive ionotropic effect by stimulating 3, receptor on hea cardiac dose. iii At high doses 10 pgkgmin produces vasoconstriction by stimulating a, receptors -- vascular dose. 