Objective: To analyze the clinical characteristics caused by acute poisoning by inhalation of hydrogen chloride (HCl) and to raise awareness and treatment level of the disease. Methods: The clinical manifestations, imaging features, diagnosis, treatment and prognosis of 5 patients with acute HCl poisoning were analyzed retrospectively. Results: Among the 5 cases of HCl poisoning, 2 cases were severe poisoning, 3 cases were moderate poisoning. All patients were treated with corticosteroids and symptomatic treatment, one of them was treated with venovenous extracorporeal membrane oxygenation (VV-ECMO) . All patients were recovered and discharged from hospital. Conclusion: The lung damage of acute poisoning by inhalation of HCl is rapidly progressing, early detection and timely medical treatment can obtain a better prognosis.
目的： 分析吸入盐酸（Hydrochloric acid，HCl）烟雾中毒病例的临床特点，提高对该病的诊治水平。 方法： 2019年3月回顾分析我院2018年7月6日至2018年7月9日收治的5例吸入氯化氢吸入致中毒病例临床资料，对其临床表现、影像学特征、诊断、治疗及预后进行总结。 结果： 5例患者中，2例诊断为重度中毒，3例为中度中毒。5例均予糖皮质激素及对症支持治疗，其中1例予静脉-静脉体外膜肺氧合（Venovenous extracorporeal membrane oxygenation，VV-ECMO）治疗，所有患者均痊愈出院。 结论： 吸入盐酸烟雾中毒患者肺部损害可在短期内明显进展，早期发现、及时就医可获得较好预后。.
Keywords: Corticosteroids; Extracorporeal membrane oxygenation; Hydrochloric acid.