低钾性周期性麻痹属于常染色体显性遗传,在欧美,散发病例仅占20％,国内则以散发者多见。现将近期发现的四代中5人发病的一家系报告如下: 先证者,女性,31岁,17岁时首次发病,表现为高考途中突然四肢无力,下蹲后不能起立,但在别人搀扶下可行走,无呼吸困难及大小便障碍,查血钾3.0mmol/L,经口服10％氯化钾液30ml后12小时缓 Hypokalemic periodic paralysis is autosomal dominant inheritance, in Europe and the United States, sporadic cases accounted for only 20%, while domestic distributor is more common. The recent discovery of a family of 5 in four generations reported the following: proband, females, 31 years old, 17 years old, the first incidence, manifested as sudden weakness in the entrance examination on the way, after squatting can not stand up, but others help Under walking, no breathing difficulties and urinary disorders, check potassium 3.0mmol / L, after oral administration of 10% potassium chloride solution 30ml 12 hours slow