１引言流行性出血热ＥＨＦ是临床常见病，患者因中毒症状重、进食少、呕吐频繁，加之应用大剂量利尿药及导泻药，使体内钠丢失过多，又未及时补充足量的钠，易引起低钠血症１２，少数严重病人可并发低渗性脑病，而临床表现无特异性。临床医师若对此症认识不足，易造成误诊、误? 1 Introduction Epidemic hemorrhagic fever EHF is a common clinical disease, patients due to symptoms of poisoning, eating less frequent vomiting, combined with the use of high doses of diuretics and cathartic drugs, so that excessive loss of sodium in the body, they did not replenish adequate sodium, Easy to cause hyponatremia 12, a few serious patients may be complicated by hypotonic encephalopathy, and clinical manifestations of non-specific. If clinicians lack of understanding of this disease, easily lead to misdiagnosis, mistakes?