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男,37岁,因饱餐后烦渴伴四肢软瘫1天急诊入院,曾有类似发病史。查体:P56次/分BP 16.0/9.33 kPa,神志清楚,被动体位,不能站立,颈软无抗力,双上肢肌力Ⅱ级,双下肢肌力Ⅰ级,四肢腱反射消失,感觉正常,病理征未引出。实验室检查:血钾2.0mmol/L;心电图示窦性节律,心率52次/分,电轴左偏82度,P-R间期0.43秒,QRS波0.14秒,Ⅱ、Ⅲ、avF导联呈rS, SⅢ>SⅡ,V_1导联呈rsR″, SⅠ、V_5增宽并有切迹,T波各联均平直,各联均有明显宽大的U波,U>T,T波与U波相互融合,Q-Tu时间0.56秒。心电图提示低血钾和心室内不完全三支传导阻滞(完右+左前半分支+左后支阻滞)。左后支的传导阻滞表现为P-R时间延长。治疗:入院后48小时内静脉补钾23g,同时口服10％氯化钾12g后,四肢肌力、肌张力恢复正常,复查心电图示窦性心律,心电轴+60度,
Male, 37 years old, polo ralph lauren pas cher, due to full meal after thirsty with extremities flaccid paralysis 1 day emergency hospital admission, had a similar history. Physical examination: P56 / min BP 16.0 / 9.33 kPa, conscious, passive position, can not stand, neck soft and resistant, Ⅱ upper limb muscle strength, muscle strength of both lower extremities Ⅰ level, tendon reflex disappeared, feeling normal, pathology Levy did not lead. Laboratory tests: serum potassium 2.0mmol / L; ECG showed sinus rhythm, heart rate 52 beats / min, left axis deviation of 82 degrees, PR interval of 0.43 seconds, QRS wave 0.14 seconds, Ⅱ, Ⅲ, avF lead was rS , SⅢ> SⅡ, V_1 lead was rsR ", SⅠ, V_5 broadened and notch, each T wave were flat, each have a clear U wave, U> T, T wave and U wave mutual Fusion, Q-Tu time 0.56 seconds. ECG showed hypokalemia and intraventricular incomplete three block (right right + left front half branch + left posterior branch block.) The left posterior branch of the block showed PR time Prolonged treatment: 48 hours after admission intravenous potassium 23g, while oral administration of 10% potassium chloride 12g, muscle strength, muscle tone back to normal, review of ECG shows sinus rhythm, ECG axis +60 degrees,