Objective To investigate the association between serum potassium ion concentration and the degree of paralysis, and the effect of sylvite supplementary treatment in patients who suffered from hypokalemic periodic paralysis ( HoPP). 目的研究低钾型周期性瘫痪(HoPP)患者血清钾离子浓度与肢体瘫痪程度的关系及对补钾治疗的影响。