Abstract: Objective:To translate the English version of postextubation dysphagia screening tool（PEDS） into Chinese version and to test its reliability and validity in patients with mechanical ventilation. Methods: According to the Brislin translation model, the English version of postextubation dysphagia screening tool was translated into Chinese version, and then was back-translated and modified for cultural adaptation following the guidelines. Reliability test included Cronbach’s α coefficient and intra-class correlation coefficients. Validity test included Content Validity Index and exploratory factor analysis. The reliability and validity of the Chinese version of PEDS was tested in 100 patients with mechanical ventilation. As a golden standard for evaluation of dysphagia, flexible endoscopic examination of swallowing test was used to evaluate the sensitivity and specificity of PEDS. Results: The Cronbach’s α coefficient of the Chinese version of the scale was 0.904 and the intra-class correlation coefficients was 0.93. The Scale-Content Validity Index（S-CVI） was 0.96 and the Item-Content Validity Index（I-CVI） ranged from 0.84 to 1.00. The prevalence of postextubation dysphagia was 56% in 100 eligible patients.The sensitivity of the postextubation dysphagia screening tool was 82.1%and specificity was 70.5%. Conclusion: The Chinese version of PEDS has good reliability and validity, which can effectively evaluate the postextubation dysphagia risk in patients with mechanical ventilation.

Key words: Mechanical ventilation, Postextubation dysphagia, Screening； Reliability and validity

摘要： 目的：汉化机械通气患者拔管后吞咽障碍筛查工具（postextubation dysphagia screening，PEDS），并检验其信效度及诊断价值。方法：严格遵循Brislin翻译模型对PEDS工具进行汉化，并经专家函询、ICU护士认知性访谈及预试验调适问卷条目，将其应用于100例经口气管插管机械通气患者。问卷内部一致性采用Cronbach’s α系数评估、评定者间信度采用组内相关系数评估；内容效度指数以及探索性因子分析验证效度检验结果；以吞咽障碍评估金标准——纤维内镜吞咽功能检查为参考标准，通过灵敏度、特异度进行诊断价值评价。结果：中文版PEDS工具总的Cronbach’s α系数为0.904；评估者内部信度系数为0.930；各条目内容效度指数为0.84～1.00，总的内容效度指数为0.96；机械通气患者拔管后吞咽障碍的发生率为56%，灵敏度为82.1%，特异度为70.5%。结论：中文版PEDS工具具有良好的信效度，灵敏度高，适用于经口气管插管机械通气患者吞咽障碍的筛查。

关键词: 机械通气, 吞咽障碍, 筛查, 信效度