补钾常用计算.doc

.补钾常用计算式应补K+(mmol)=（5-病人血K+）体重(kg)0.2（5为血K+正常值5mmol/L）应补氯化钾（g）=（5-病人血K+）体重(kg)0.0149（病人血钾按mmol/L计0.0149=0.213.4）应补10%氯化钾(ml)=(5-病人血K+)体重(kg)0.149(单位应换算：g13.4=mmol;mmol0.0745=g,0.0745=74.51000而得（5-病人血K+）体重(kg) 0.2+50=缺K+ mmol缺K+mmol13.4=缺K+ g数（为一日补入量，适于急性缺钾者）根据血钾下降数补钾：血K+下降1mmol/L,缺K+为100200mmol血K+再下降1mmol/L，再缺K+200400mmol血K+共下降2mmol/L，共缺K+为300600mmol如:血K+从4.5下降至2.5mmol/L缺K+300600mmol 含氯化钾22.3544.7g均33.7g）