Dopamine is pumped intravenously and is usually calculated according to the patient’s body weight, where the kilograms of body weight multiplied by three is the amount of dopamine applied. Dopamine is usually diluted into a 50 ml solution for pumping, and the amount pumped per minute is also the amount of dopamine pumped into the body per minute. Depending on the amount and the excitatory receptors, the effects are different: small doses of dopamine have the effect of dilating renal blood vessels and can further increase urine output; while the main effect of large doses of dopamine is to raise blood pressure, especially for patients in hypotensive shock, usually pumping more than 10ml-20ml per hour; medium amounts of dopamine have cardiotonic effects and excite beta receptors. Dobutamine is mostly used in patients with heart disease and trauma, and it is a vasoactive drug commonly used in cases of resuscitation when shock occurs.