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中国防痨杂志 ›› 2024, Vol. 46 ›› Issue (1): 70-74.doi: 10.19982/j.issn.1000-6621.20230348

• 论著 • 上一篇    下一篇

InnowaveDX MTB/RIF对结核分枝杆菌复合群及利福平耐药检测性能的评估

刘梅, 吴霞, 古旭, 李娜娜, 张万敏, 张小可, 兰远波()   

  1. 遵义医科大学附属医院结核病科,遵义 563000
  • 收稿日期:2023-09-26 出版日期:2024-01-10 发布日期:2024-01-04
  • 通信作者: 兰远波,Email:lybivy@163.com
  • 基金资助:
    贵州省科技计划项目(黔科合基础-ZK〔2023〕581);遵义市科技计划项目(遵市科合HZ〔2022〕254);贵州省卫生计生委科学技术基金(gzwjkj2018-024)

Evaluation of the performance of InnowaveDX MTB/RIF in detecting Mycobacterium tuberculosis complex and rifampicin resistance

Liu Mei, Wu Xia, Gu Xu, Li Nana, Zhang Wanmin, Zhang Xiaoke, Lan Yuanbo()   

  1. Tuberculosis Division of Respiratory and Critical Care Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
  • Received:2023-09-26 Online:2024-01-10 Published:2024-01-04
  • Contact: Lan Yuanbo, Email: lybivy@163.com
  • Supported by:
    Guizhou Provincial Science and Technology Foundation (ZK〔2023〕581);Zunyi Science and Technology Foundation(HZ〔2022〕254);Science and Technology Fund Project of Guizhou Provincial Health Commission(gzwjkj2018-024)

摘要:

目的:评估InnowaveDX MTB/RIF(简称“InnowaveDX”)检测结核分枝杆菌复合群(Mycobacterium tuberculosis complex,MTBC)及MTB利福平耐药性的性能。方法:采用前瞻性研究方法,连续纳入2023年3月1日至6月30日遵义医科大学附属医院具有结核病相关体征/症状,或胸部X线检查结果提示疑似结核病的患者作为研究对象,共纳入104例。其中,93例诊断为结核病(包括68例经病原学阳性确诊,25例病原学阴性经临床诊断确诊),11例临床诊断为非结核病。收集研究对象的痰液、支气管肺泡灌洗液、尿液、淋巴结穿刺液、脑脊液、脓液及胸腔积液,行涂片抗酸杆菌染色镜检、培养、InnowaveDX和GeneXpert MTB/RIF(简称“Xpert”)检测,评价InnowaveDX 对结核病和MTB利福平耐药性的检测效能。结果:以病原学及临床诊断结果为参照,InnowaveDX检测结核病的敏感度、特异度、一致率、Kappa值分别为92.5%(86/93)、100.0%(11/11)、93.3%(97/104)、0.72;Xpert检测结核病的敏感度、特异度、一致率、Kappa值分别为93.6%(87/93)、100.0%(11/11)、94.2%(98/104)、0.75。InnowaveDX和Xpert检测痰标本阳性率均为91.5%(65/71),差异无统计学意义(χ2=0.000,P=1.000);检测其他类型标本(支气管肺泡灌洗液、尿液、淋巴结穿刺液、脑脊液、脓液及胸腔积液)阳性率分别为95.5%(21/22)和100.0%(22/22),差异无统计学意义(Fisher精确概率法,P=1.000)。以Xpert检测MTB利福平耐药性结果为参照,InnowaveDX检测MTB利福平耐药的敏感度为97.0%(32/33),特异度为92.2%(47/51),Kappa值为0.88。结论:InnowaveDX对于MTBC具有较好的检测效能,且适用于不同类型的标本,检测MTB利福平耐药性结果与Xpert一致性好。

关键词: 分枝杆菌,结核, 抗药性,细菌, 利福平, 诊断

Abstract:

Objective: To evaluate the performance of InnowaveDX MTB/RIF (InnowaveDX) in detecting Mycobacterium tuberculosis complex (MTBC) and MTB rifampicin resistance. Methods: Using prospective research methods, 104 consecutive patients with tuberculosis related signs/symptoms or suspected tuberculosis according to chest X-ray from March 1 to June 30, 2023 in the Affiliated Hospital of Zunyi Medical University were included as research objects. Among them, 93 cases were diagnosed as tuberculosis (68 cases diagnosed with positive etiology and 25 cases diagnosed with negative etiology), and 11 cases were diagnosed as non-tuberculosis. Sputum, bronchoalveolar lavage fluid, urine, lymph node puncture fluid, cerebrospinal fluid, pus and pleural effusion of the subjects were collected for smear acid fast bacilli staining microscopy, culture, InnowaveDX and GeneXpert MTB/RIF (Xpert) detections, and the detection efficiency of InnowaveDX for tuberculosis and MTB rifampicin resistance was evaluated. Results: Based on etiology and clinical diagnosis, the sensitivity, specificity, consistency and Kappa value of InnowaveDX in detecting tuberculosis were 92.5% (86/93), 100.0% (11/11), 93.3% (97/104) and 0.72 respectively; and those of Xpert were 93.6% (87/93), 100.0% (11/11), 94.2% (98/104) and 0.75, respectively. The positive rates of InnowaveDX and Xpert in detecting sputum samples were both 91.5% (65/71), and the difference was not statistically significant(χ2=0.000, P=1.000); the positive rates of detecting other types of specimens (bronchoalveolar lavage fluid, urine, lymph node puncture fluid, cerebrospinal fluid, pus, and pleural effusion) were 95.5% (21/22) and 100.0% (22/22), respectively, with no statistically significant difference (Fisher’s exact probability method, P=1.000). Based on the results of Xpert testing for MTB rifampicin resistance, the sensitivity of InnowaveDX testing for MTB rifampicin resistance was 97.0% (32/33), the specificity was 92.2% (47/51), and the Kappa value was 0.88. Conclusion: InnowaveDX has good detection efficiency for MTBC and is suitable for different types of specimens. And the results of detecting MTB rifampicin resistance are consistent with Xpert.

Key words: Mycobacterium tuberculosis, Drug resistance, bacterial, Rifampin, Diagnosis

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