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目的:探讨儿童结素试验阳性结果,为临床鉴别儿童结核起辅助诊断作用。方法对136例疑似患儿左前臂曲侧皮内注射0.1ml(含5u),72小时观察结果;其中103例患儿有接种卡介苗史。结果:PPD试验阳性反应者136例,其中确诊为感染结核者61例,占44.85%,人工免疫PPD阳性反应者75例,占55.15%。结果:人工免疫阳性硬结于试验后≤4天消退,硬结持续时间为1天~2天,色素沉着淡薄。自然感染者PPD硬结于试验后≤7天消退,硬结持续时间4天~5天,有明显色素沉着。结论:PPD试验确定儿童既往或最近是否受过结核菌感染有重要意义。
Objective: To explore the positive results of children’s nodules test for the differential diagnosis of children with tuberculosis. Methods Intracranial injection of 0.1ml (including 5u) and 72 hours in 136 cases of suspected left forearm were performed. Among them, 103 cases had BCG vaccination history. Results: There were 136 cases of positive PPD test, of which 61 cases were diagnosed as TB, accounting for 44.85%, and 75 cases were artificial immune PPD positive, accounting for 55.15%. Results: Artificial immune positive sclerosis after the test ≤ 4 days subsided, induration duration of 1 day to 2 days, pale pigmentation. Naturally infected PPD induration ≤ 7 days after the test subsided, induration duration of 4 days to 5 days, there is obvious pigmentation. Conclusion: PPD test to determine whether the past or recent children infected with Mycobacterium tuberculosis is of great significance.