Diagnostic Accuracy of the Xpert MTBRIF Assay for Lymph Node Tuberculosis: A Systematic Review and Meta-Analysis

الملخص EN

Objectives.

To evaluate the performance of Xpert MTB/RIF for lymph node tuberculosis (LNTB).

Methods.

We searched databases for published reports.

We reviewed the studies and identified the performance of Xpert MTB/RIF with respect to a composite reference standard (CRS) and culture.

We used a bivariate random-effects model to perform meta-analyses and used metaregression to analyze sources of heterogeneity.

Results.

15 independent studies compared Xpert MTB/RIF with CRS while 21 comparing it with culture were included.

The pooled sensitivity and specificity of Xpert MTB/RIF were 79% and 98% compared to that of CRS, respectively, and 84% and 91% compared to that of culture, respectively.

The pooled sensitivity and specificity using fine needle aspiration (FNA) samples versus CRS were 80% and 96%, whereas those against culture were 90% and 89%, respectively.

The percentages while working with tissue samples versus CRS were 76% and 100%, respectively, whereas those against culture were 76% and 92%, respectively.

There was no significant difference in diagnostic efficiency among the types of specimen.

Conclusions.

Xpert MTB/RIF demonstrates good diagnostic efficiency for LNTB and is not related to the type of specimen, obtained via different routes.