Dopamine is a beta-receptor stimulant that has the effect of increasing cardiac output, increasing vascular tone, elevating blood pressure, increasing blood flow to the kidneys, and improving renal function. Different dosages reflect different clinical effects. It must be injected into the body in the form of a micropump, and in this case at a dosage of 2 μg/(kg-min), it acts to improve blood perfusion to the kidneys and increase urine output. At 2-5 μg/(kg-min), its clinical effect is to improve cardiac function by increasing cardiac output and myocardial contraction rate. Above 10μg/(kg-min), its effect is to improve vascular tone, and the effect of raising blood pressure is more obvious. The above content is for reference only, please refer to the doctor’s guidance for specific medication and treatment.