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目的 探讨化学发光法结核感染T细胞试验(chemiluminescence-based tuberculosis interferon-gamma release assay, TB-IGRA)对人类免疫缺陷病毒(human immunodeficiency virus, HIV)感染合并活动性肺结核的诊断价值,并分析其敏感度、特异度及相关影响因素。方法 选取2021年1月至2023年3月期间孝感市第一人民医院收治的108例HIV感染住院患者为研究对象,其中76例临床确诊为活动性肺结核(研究组),其余32例排除结核感染(对照组)。所有患者均接受TB-IGRA检测,比较2组检测结果的差异,评估TB-IGRA在HIV感染者中对结核病的诊断效能。进一步将研究组依据TB-IGRA检测结果分为阴性组和阳性组,采用Spearman相关分析探讨HIV载量、CD4~+T淋巴细胞计数与TB-IGRA结果的相关性。同时,采用多因素Logistic回归分析TB-IGRA敏感度的独立影响因素。结果 TB-IGRA在HIV感染人群中诊断活动性肺结核的敏感度为71.05%,特异度为90.63%,阳性预测值为94.74%,阴性预测值为56.86%,准确度为76.85%。多因素分析显示,年龄、CD4~+T淋巴细胞计数及HIV载量是影响TB-IGRA敏感度的独立影响因素。结论 TBIGRA在HIV感染人群中诊断活动性肺结核具有较高的特异度和准确度,但敏感度相对较低,其检测结果受年龄、HIV载量及CD4~+T淋巴细胞计数等因素的影响。
Abstract:Objective To evaluate the diagnostic value of the chemiluminescence-based tuberculosis interferon-gamma assay(TB-IGRA) for active pulmonary tuberculosis in HIV-infected populations, and to analyze its sensitivity, specificity,and related influencing factors. Methods We retrospectively collected the clinical and laboratory data from 108 HIV-infected inpatients admitted to Xiaogan First People's Hospital between January 2021 to March 2023. Among them, 76 cases were clinically diagnosed with active pulmonary tuberculosis(study group), while the remaining 32 patients without tuberculosis infection served as the control group. By comparing TB-IGRA test results between the 2 groups, we aimed to evaluate the diagnostic performance of TB-IGRA for tuberculosis in HIV-infected individuals. Furthermore, the study group was subdivided into negative group and the positive group based on TB-IGRA results. Spearman'rank correlation analysis was performed to assess the associations between HIV viral load, CD4+ T-lymphocyte count, and TB-IGRA outcomes. Additionally, multivariate logistic regression analysis was conducted to indentify independent predictors of TB-IGRA sensitivity in this population. Results The sensitivity of TB-IGRA for diagnosing active pulmonary tuberculosis in HIV-infected individuals was 71.05%, with a specificity of 90.63%, positive predictive value(PPV) of 94.74%, negative predictive value(NPV) of 56.86%, and overall accuracy of 76.85%. Multivariate analysis revealed that age, CD4+ T-lymphocyte count, and HIV viral load were independent predictors of TB-IGRA sensitivity. Conclusion TB-IGRA demonstrates high specificity and accuracy for diagnosing active pulmonary tuberculosis in HIV-infected individuals, but its sensitivity is relatively low. The test results are significantly by age, HIV viral load, and CD4+ T-lymphocyte count.
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基本信息:
中图分类号:R52;R512.91
引用信息:
[1]蒋祖环,艾文彬,王之玺.化学发光法结核感染T细胞试验在HIV感染人群中的应用及其影响因素分析[J].传染病信息,2026,39(01):14-18+23.
2026-02-28
2026-02-28