1　病历摘要　　男,38岁。反复四肢乏力2年,再次发作伴气促、腹痛腹泻12h,于2003年4月10日入院。两年前无明显诱因出现阵发性四肢无力,曾在当地医院测血钾偏低,诊断为“低钾性周期性麻痹”,经补钾治疗后好转,但常反复发作。12h前无明显诱因再次出现四肢乏力,同时出现呼吸困难, 1 medical record summary male, 38 years old. Repeated limb weakness for 2 years, episodes of recurrent gas shortness of breath, abdominal pain and diarrhea 12h, on April 10, 2003 admission. Two years ago there was no obvious incentive to appear paroxysmal limb weakness, had low blood potassium in local hospitals, diagnosed as “hypokalemic periodic paralysis”, after the treatment of potassium improved, but often recurrent. 12h no obvious incentive to re-emergence of limb weakness, while breathing difficulties,