检验医学 ›› 2016, Vol. 31 ›› Issue (1): 52-55.DOI: 10.3969/j.issn.1673-8640.2016.01.012

• 技术研究与评价·论著 • 上一篇    下一篇

Xpert MTB/RIF技术在MTB检测中的应用价值

李妍1, 张天华1, 鲜小萍1, 王西娣1, 陈美玲1, 杨健1, 王蕊1, 金艳2   

  1. 1.陕西省结核病防治研究所,陕西 西安 710048
    2.中国人民解放军68210部队医院,陕西 宝鸡 721001
  • 收稿日期:2014-12-30 出版日期:2016-01-31 发布日期:2016-02-16
  • 作者简介:null

    作者简介:李妍,女,1981年生,硕士,主管技师,主要从事结核病实验室诊断工作。

    通讯作者:张天华,联系电话:029-82224951。

  • 基金资助:
    陕西省卫生厅资助项目(2014D25)

Application significance of Xpert MTB/RIF assay on the detection of MTB

LI Yan1, ZHANG Tianhua1, XIAN Xiaoping1, WANG Xidi1, CHEN Meiling1, YANG Jian1, WANG Rui1, JIN Yan2   

  1. 1. Shanxi Provincial Institute for Tuberculosis Control and Prevention,Xi'an 710048,Shanxi,China
    2. 68210 Hospital of People's Liberation Army,Baoji 721001,Shanxi,China
  • Received:2014-12-30 Online:2016-01-31 Published:2016-02-16

摘要: 目的探讨Xpert结核分枝杆菌(MTB)/利福平(RIF)技术在结核病诊断中的临床应用价值。方法采用Xpert MTB/RIF技术、抗酸染色法和培养法同时检测302例确诊结核病的患者样本,对检测结果进行比较。结果所有样本均采用Xpert MTB/RIF技术、抗酸染色法和培养法3种方法进行检测,其中痰样本阳性率分别为53.9%、33.0%和37.2%;灌洗液阳性率分别为65.9%、22.7%和29.5%;胸水阳性率分别为16.4%、1.5%和3.0%。Xpert MTB/RIF技术的阳性率明显高于抗酸染色法和培养法(P均<0.01),抗酸染色法与培养法之间差异无统计学意义(P均>0.05)。不同类型样本采用Xpert MTB/RIF技术检测的阳性率依次为:灌洗液[65.9%(29/44)]>痰样本[53.9%(103/191)]>胸水[16.4%(11/67)]。Xpert MTB/RIF技术和比例法药物敏感性试验检测RIF的耐药率分别为22.1%(19/86)和20.9%(18/86),二者间差异有统计学意义(P=0.00);2种方法所得结果的一致率为96.5%(83/86)。结论Xpert MTB/RIF技术检测MTB与抗酸染色法、培养法相比较,具有快速、简单、敏感性高等优点,有良好的应用前景。

关键词: Xpert结核分枝杆菌/利福平技术, 结核分枝杆菌, 结核病

Abstract:

Objective To investigate the clinical application significance of Xpert Mycobacterium tuberculosis(MTB)/rifampicin(RIF)assay in the diagnosis of tuberculosis. Methods A total of 302 patients with tuberculosis were determined by Xpert MTB/RIF assay,acid-fast stain and culture,respectively. The results were compared. Results All the samples were detected by Xpert MTB/RIF assay,acid-fast stain and culture,and the positive rates of sputum samples were 53.9%,33.0% and 37.2%. The positive rates of lavage fluid were 65.9%,22.7% and 29.5%. The positive rates of hydrothorax were 16.4%,1.5% and 3.0%. The positive rates of Xpert MTB/RIF assay for all types of samples were higher than those of acid-fast stain and culture (P<0.01),and there was no statistical significance between acid-fast stain and culture (P >0.05). The positive rate of Xpert MTB/RIF assay in lavage fluid was 65.9%(29/44),that in sputum samples was 53.9%(103/191),and that in hydrothorax was 16.4%(11/67). The RIF resistance rates from Xpert MTB/RIF assay [22.1%(19/86)] had no statistical significance with those from standard drug susceptibility testing [20.9%(18/86),P=0.00]. The coincidence rate was 96.5%(83/86). Conclusions Compared with acid-fast stain and culture,Xpert MTB/RIF assay is rapid,simple and sensitive in the detection of MTB,and has a good application prospect.

Key words: Xpert Mycobacterium tuberculosis/rifampicin assay, Mycobacterium tuberculosis, Tuberculosis

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