Acute kidney injury (AKI) or acute renal failure is a clinical manifestation in which the kidneys are unable to preserve the normal homeostasis of water and electrolytes. To evaluate the effects of low dose dopamine to improve the renal functions in children, 3 µg/kg/min, IV infusion of dopamine was prescribed. The results of this study showed that low dose dopamine improved the serum creatinine concentration and corrected the time of appropriate urine volume, however, it was not effective on the serum electrolytes (Na, K, Bicarbonates, BUN) and the glomerular filtration rate (GFR).