Pressor therapy is not a substitute for replacement of blood, plasma, fluids &/or electrolytes. Correct blood vol depletion before dopamine therapy is instituted. Monitor patients w/ history of occlusive vascular disease (eg, atherosclerosis, arterial embolism, Raynaud's disease, cold injury, diabetic endarteritis, or buerger's disease). Ischemic heart disease. Pregnancy & lactation. Childn.