多巴胺作为一种血管活性药物，具有改善周围循环，增加心肌收缩力，加快心率，收缩血管，使血压升高等作用。在新生儿病房中常用此药治疗重度缺氧缺血性脑病、休克、重症肺炎等。当药物浓度较大，连续用药时间较长时，可致局部血管收缩。新生儿静脉输液常选择头皮静脉血管... Dopamine, as a vasoactive drug, has the effect of improving peripheral circulation, increasing myocardial contractility, accelerating heart rate, constricting blood vessels and increasing blood pressure. Commonly used in neonatal wards in the treatment of severe hypoxic-ischemic encephalopathy, shock, severe pneumonia and so on. When the drug concentration is larger, continuous medication time is longer, can cause local vasoconstriction. Neonatal intravenous infusion of scalp vein often choose ...