病史摘要男,12岁,农村儿童,因呕吐,腹痛,腹泻4天入院。入院查体:T38.2c,W38Kg,BP13/7kpa,脱水貌,嗜睡,表情淡漠,皮肤弹性差,并有多处皮癣,眼眶凹陷,瞳孔0.2cm,颈肌无力,肺(-),心率65次/分,心音低钝,肠鸣音亢进,四肢湿冷,肌无力,腱反射消失。实验室检查:血 wbc28.12×10/1,N91%,血清钾4.1mmol/l(正常值3.5-5.5mmmol/l),心电图检查无异常。入院诊断:急性胃肠炎伴水电解质平衡紊乱,中 Summary of medical history Male, 12 years old, rural children, due to vomiting, abdominal pain, diarrhea 4 days admission. Admission examination: T38.2c, W38Kg, BP13 / 7kpa, dehydration appearance, lethargy, apathy, poor skin elasticity, and multiple psoriasis, orbital depression, pupil 0.2cm, cervical muscle weakness, lung (-), heart rate 65 beats / min, heart sounds low blunt, bowel sounds hyperthyroidism, limbs cold and cold, muscle weakness, tendon reflex disappears. Laboratory tests: blood wbc28.12 × 10/1, N91%, serum potassium 4.1mmol / l (normal 3.5-5.5mmmol / l), ECG abnormalities. Admission diagnosis: acute gastroenteritis with water and electrolyte balance disorders, in