患者 ,女 ,2 7岁。 3天前无明显诱因出现呼吸困难 ,周身乏力 ,双下肢轻瘫 ,来我院就诊。急检血钾1.8ｍｍｏｌ/Ｌ ,血钠 12 7ｍｍｏｌ/Ｌ ,血糖 4 .8ｍｍｏｌ/Ｌ ,尿糖“ -” ,尿蛋白“ ++” ,尿ｐＨ7 0 ,门诊以继发性低钾性周期麻痹收入院。该患平素有多饮、多尿、口干、眼干现 Patient, female, 27 years old. No obvious incentive 3 days ago, dyspnea, whole body fatigue, paralysis of both lower extremities, to our hospital. Emergency potassium 1.8mmol / L, serum sodium 12 7mmol / L, blood sugar 4 .8mmol / L, urine sugar “-”, urinary protein “++”, urine pH7 0, outpatient secondary hypokalemic cycle paralysis Income homes. The usually suffering from drinking, polyuria, dry mouth, dry eyes now