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目的:检验我院制定的以“有接触史的发热伴流感样症状的患者”作为咽试子H7N9核酸检测的筛查标准的阳性率及漏诊率,并提出可能的最佳筛选标准。方法:以我院2014年1、2月份进行咽试子H7N9核酸检测的61例患者及4例阳性患者作为研究对象,分析比较现行的筛查标准及假设的三种筛查标准的符合率、阳性率和漏诊率。结果:现行标准、假定标准1、2、3的符合率分别为32.8%、24.6%、54.1%、62.3%;阳性率为10.0%、13.3%、9.1%、10.5%;漏诊率分别为50.0%、50.0%、25.0%、0.0%。结论:为减少漏诊率,以“白细胞不高的肺炎”作为筛查标准可能更加符合临床诊断要求。
OBJECTIVE: To test the positive rate and misdiagnosis rate of screening test for H7N9 nucleic acid of pharyngeal test patients developed by our hospital with “history of fever and flu-like symptoms with history of exposure” and to propose the best possible screening criteria. Methods: Totally 61 patients and 4 positive patients with H7N9 pharyngeal testis in our hospital in January and February of 2014 were selected as research objects. The coincidence rates of the current screening criteria and the three hypothetical screening criteria were analyzed. Positive rate and missed diagnosis rate. Results: According to the current standards, the coincidence rates of standards 1, 2 and 3 were 32.8%, 24.6%, 54.1% and 62.3% respectively; the positive rates were 10.0%, 13.3%, 9.1% and 10.5% , 50.0%, 25.0%, 0.0%. Conclusion: In order to reduce the rate of misdiagnosis, the screening criteria of “low leukocyte pneumonia” may be more suitable for clinical diagnosis.