临床上静滴氯化钾较为常见,为了防止高钾血症,通常规定氯化钾的浓度不超过0.23%,滴速每小时不超过1g。本文以此两个极限为依据,举例计算静滴氯化钾在某一浓度时莫菲氏滴管的安全滴速(gtt/min)。此外,还介绍了按不同的病情需要,浓度和滴速可适当调整,及滴注氯化钾时的其它注意事项。 Clinical intravenous potassium chloride is more common, in order to prevent hyperkalemia, potassium chloride is usually provided no more than 0.23% concentration, drip rate does not exceed 1g per hour. Based on these two limits, this article gives an example to calculate the safe dripping rate (gtt / min) of a Murphy’s dropper at a given concentration of intravenous potassium chloride. In addition, introduced according to different needs of the disease, the concentration and drip rate can be adjusted, and other precautions when instillation of potassium chloride.