对多发性肌炎合并低钾性麻痹1例分析如下。1病历摘要女,57岁。主因四肢疼痛1周,无力1 d入院。1周前无明显诱因出现四肢肌肉疼痛,呈撕裂样,活动时出现,未在意。1d前晨起时出现左上肢抬举无力,晚间加重至四肢无力,行走困难。入院查体:T 36.3℃,P 76次/min,R 18次/min,BP 140/90 m Polymyositis with hypokalemic paralysis in 1 case analyzed as follows. 1 medical record summary female, 57 years old. Mainly due to limb pain for 1 week, unable to 1 d admission. 1 week ago no obvious incentive to appear muscle pain in limbs, was tearing like, appear when active, did not care. 1d before the morning when the left upper limb lifted unable to lift, weakness at night to limbs, walking difficulties. Admission examination: T 36.3 ℃, P 76 times / min, R 18 times / min, BP 140/90 m