毒毛旋花子甙是治疗急性心力衰竭的常用药物,目前常用的安瓿是每支1.0毫升,内含0.25毫克(即250微克)。小儿患者的每次用量常是数十微克,因此很难精确的在仅有1.0毫升的药液中吸取所需要的用量。笔者设计了一种方法,经过临床应用,比较满意。在使用时虽然要废弃几毫升的稀释液,但吸取的剂量相当准确,在理论上每次取用的误差一般小于0.5微克。 Toxoplasma gondii is a commonly used drug for the treatment of acute heart failure. The commonly used ampoule is 1.0 ml each and contains 0.25 mg (250 micrograms). Each dose of pediatric patients is often dozens of micrograms, so it is difficult to accurately extract the required amount of liquid in only 1.0 ml. The author designed a method that was satisfactory after clinical application. Although several milliliters of diluent are to be discarded during use, the dose drawn is quite accurate. In theory, the error for each access is generally less than 0.5 micrograms.