体内钾 细胞外 (50 mmol/Kg体重) 2% 细胞内98% 血请钾 (150mmol/L) (3.55.5mmol/L) Distribution and content of potassium within body 体内钾 (50mmol/Kg体重) 细胞外 2% 血清钾 （3.5~5.5mmol/L 3.5~5.5mmol/L） 细胞内98% (150mmol/L) (150mmol/L) Distribution and content of potassium within body