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患者女,43岁,恶心,纳差乏力20天。每天只进食米汤300至400ml 左右,不发热,近感四肢麻木,活动困难,以两下肢为甚。查体神志清,心律不齐,肠鸣减弱,两上肢肌力3级,两下肢肌力2级,双膝反射减弱,胸透心肺未见异常。心电图示窦性心动过速,u>T,房室交替性文克白周期(图1),提示低血钾。即查血 k~+为1.4mmol/L,Na~+126mmol/L,cl 114.5mmol/L,Ca~(2+)2.55mmol/L。3小时后再次复查血 k~+仍为1.4mmol/L。肝肾功能正常。空腹血糖及餐后2小时血糖均正常。
Female, 43 years old, nausea, anorexia 20 days. Only eat 300 to 400ml of rice soup every day, no fever, numbness near limbs, activity difficulties, with two lower limbs even worse. Physical examination conscientiously, arrhythmia, bowel sounds weakened, two upper limb muscle strength 3, two lower extremity muscle strength 2, knees reflex, chest X-ray no abnormal heart and lung. Electrocardiogram shows sinus tachycardia, u> T, atrioventricular alternate ventricular white cycle (Figure 1), suggesting that hypokalemia. That check blood k ~ + 1.4mmol / L, Na ~ + 126mmol / L, cl 114.5mmol / L, Ca ~ (2+) 2.55mmol / L. 3 hours after the review of blood k ~ + is still 1.4mmol / L. Liver and kidney function is normal. Fasting blood glucose and 2-hour postprandial blood glucose were normal.