Study on the value of molecular biology combined with liquid MGIT culture method in clinical examination of mycobacterium tuberculosis.
Mycobacterium tuberculosis
clinical examination
liquid MGIT culture method
molecular biology
Journal
American journal of translational research
ISSN: 1943-8141
Titre abrégé: Am J Transl Res
Pays: United States
ID NLM: 101493030
Informations de publication
Date de publication:
2021
2021
Historique:
received:
23
02
2021
accepted:
12
04
2021
entrez:
20
9
2021
pubmed:
21
9
2021
medline:
21
9
2021
Statut:
epublish
Résumé
To investigate the clinical value of molecular biology (xpert MTB/RIF) combined with a liquid mycobacterium culture tube (MGIT) in the clinical examination of Mycobacterium tuberculosis (MTB). A total of 782 patients with suspected pulmonary tuberculosis who came to our hospital from February 2018 to February 2020 were selected as the research subjects. Sputum samples of all patients were taken in the morning, and BACTEC MGIT culture and xpert MTB/RIF, Lowenstein-Jenden (L-J) culture and acid fast staining microscopy were used respectively to detect the sputum samples. The positive samples were cultured, and the bacteria identification and liquid drug sensitivity test were carried out. We also analyzed the value of xpert MTB/RIF combined with MGIT culture method in the clinical testing of MTB. (1) Among the 782 suspected patients, 405 cases were diagnosed with pulmonary tuberculosis and 377 cases were non tuberculosis patients. The sensitivity of smear microscopy was 17.28% (70/405), the specificity was 98.94% (373/377), and the average time was 3.05 h. The sensitivity of L-J culture test was 20.49% (83/405), the specificity was 97.61% (368/377), and the average time was 28.58 h. The sensitivity of MGIT culture test was 38.02% (154/405), the specificity was 96.82% (365/377), and the average time was 11.23 h. The sensitivity of xpert MTB/RIF test was 36.54% (148/405), the specificity was 99.46% (375/377), and the average time was 2.03 h. The sensitivity of MTB/RIF + MGIT test was 42.47% (172/405), the specificity was 96.02% (362/377), and the average time was 11.29 h. The sensitivity of MTB/RIF combined with MGIT culture was significantly higher than that of smear microscopy and L-J culture (χ The method of molecular biology combined with MGIT has a high sensitivity and specificity for clinical diagnosis of MTB.
Types de publication
Journal Article
Langues
eng
Pagination
9757-9763Informations de copyright
AJTR Copyright © 2021.
Déclaration de conflit d'intérêts
None.
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