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目的:观察经气管切开高流量氧疗（THFO）对气管切开非机械通气患者临床疗效的影响。方法:选择山西省汾阳医院2019年1月至2020年12月收治的60例气管切开非机械通气成人患者作为研究对象。将患者按随机数字表法分为文丘里氧疗组和THFO组，每组30例。THFO组给予THFO及配套装置进行氧疗；文丘里氧疗组用文丘里（无面罩）接MR850底座与呼吸机管路连接进行氧疗。观察两种氧疗模式患者5 d内07：00体温变化较基础值升高1℃、白细胞计数（WBC）较基础值升高2×10n 9/L、氧合指数（PaOn 2/FiOn 2）1 ℃、WBC增高2×10n 9/L、PaOn 2/FiOn 21℃：10.0%（3/30）比13.3%（4/30），WBC增高2×10n 9/L：10.0%（3/30）比30.0%（9/30），PaOn 2/FiOn 2<300 mmHg：3.3%（1/30）比10.0%（3/30），下呼吸道感染：6.7%（2/30）比13.3%（4/30），均n P<0.05〕，痰痂形成和痰液黏稠度为Ⅰ度的患者比例均明显升高〔痰痂形成：16.7%（5/30）比6.7%（2/30），痰液黏稠度Ⅰ度：30.0%（9/30）比20.0%（6/30），均n P<0.05〕。n 结论:气管切开成人患者非机械通气时行THFO，可在维持较高氧分压的同时较理想地控制吸入气体温湿度，促进Ⅰ度、Ⅱ度黏稠度痰液排出，从而降低气管切开术后下呼吸道感染等并发症的发生。“,”Objective:To observe the effect of tracheotomy high-flow oxygen therapy (THFO) on the clinical efficacy of non-mechanically ventilated patients undergoing a tracheotomy.Methods:Sixty adult patients with tracheotomy and non-mechanical ventilation who were diagnosed and treated from January 2019 to December 2020 in Fenyang Hospital of Shanxi Province were enrolled. According to the random number table, the patients were divided into Venturi oxygen therapy group and THFO group, 30 cases in each group. The THFO group was given oxygen therapy with THFO; the Venturi group (without mask) was given Venturi connected the MR850 base and the ventilator tube. Observe the changes of two groups at 7 AM within 5 days, including body temperature which was 1 ℃ higher than the baseline, white blood cell count (WBC) which was 2×10n 9/L higher than baseline, oxygenation index (PaOn 2/FiOn 2) 1 ℃, WBC increased by 2×10 n 9/L, PaOn 2/FiOn 2 1 ℃: 10.0% (3/30) vs. 13.3% (4/30), WBC increased by 2×10 n 9/L: 10.0% (3/30) vs. 30.0% (9/30), PaOn 2/FiOn 2 < 300 mmHg: 3.3% (1/30) vs. 10.0% (3/30), the proportion of lower respiratory tract infection: 6.7% (2/30) vs. 13.3% (4/30), all n P < 0.05]. The proportion of patients with sputum scab formation and sputum viscosity of Ⅰ degree were significantly increased [sputum scab formation: 16.7% (5/30) vs. 6.7% (2/30), sputum viscosity of Ⅰ degree: 30.0% (9/30) vs. 20.0% (6/30), both n P < 0.05].n Conclusion:THFO during non-mechanical ventilation of adult patients with tracheotomy can maintain a higher oxygen partial pressure and ideally control the temperature and humidity of the inhaled gas, promote the discharge of sputum with degreeⅠ andⅡ viscosity, thereby reducing the tracheotomy complications such as lower respiratory tract infections.