本文首次报告1例由可乐亭引起的稀释性低钠血症。患者女,65岁,几年来因高血压接受乐可亭0.2mg,每日3次及氯噻酮50mg,每日2次治疗。入院前持续呕吐3周。入院时血清钠131mmol/L,钾2.6mmol/L,氯90mmol/L,碳酸氢盐34mmol/L,尿素7mmol/L。经静注等渗盐水和补钾3天后呕吐停止。因发现大肠杆菌引起的泌尿道感染,患者出院时服用抗高血压药及复方新诺明。9天后又因恶心、呕吐再次入院。即停用抗高血压药物、抗菌药物疗程已 This is the first report of a case of dilutional hyponatremia caused by Cokebuning. Female, 65 years old, over the years due to high blood pressure to accept Leketon 0.2mg, 3 times a day and chlorthalidone 50mg, 2 times a day treatment. Vomiting for 3 weeks before admission. On admission, serum sodium 131mmol / L, potassium 2.6mmol / L, chlorine 90mmol / L, bicarbonate 34mmol / L, urea 7mmol / L. After intravenous infusion of isotonic saline and potassium vomiting stopped after 3 days. Because of the urinary tract infection caused by the discovery of E. coli, patients were taken to take antihypertensives and cotrimoxazole when they were discharged from hospital. 9 days later due to nausea, vomiting again admitted to hospital. That disable anti-hypertensive drugs, anti-bacterial medication has been