Impact of Larger Sputum Volume on Xpert® MTB/RIF Assay Detection of Mycobacterium tuberculosis in Smear-Negative Individuals with Suspected Tuberculosis
Abstract
:1. Introduction
2. Methods
3. Results
4. Discussion
Acknowledgements
Author Contributions
Conflicts of Interest
References
- World Health Organization. Global Tuberculosis Report 2015. Available online: http://www.who.int/tb/publications/global_report/en/ (accessed on 16 March 2016).
- Steingart, K.R.; Schiller, I.; Horne, D.J.; Pai, M.; Boehme, C.C.; Dendukuri, N. Xpert(R) MTB/RIF assay for pulmonary tuberculosis and rifampicin resistance in adults. Cochrane Database Syst. Rev. 2014, 1, CD009593. [Google Scholar]
- Luetkemeyer, A.F.; Firnhaber, C.; Kendall, M.A.; Wu, X.; Mazurek, G.H.; Benator, D.A; Arduino, R.; Fernandez, M.; Guy, E.; Johnson, P.; et al. Evaluation of Xpert MTB/RIF Versus AFB Smear and Culture to Identify Pulmonary Tuberculosis in Patients with Suspected Tuberculosis from Low and Higher Prevalence Settings. Clin. Infect. Dis. 2016, 62, 1081–1088. [Google Scholar] [CrossRef] [PubMed]
- Warren, J.R.; Bhattacharya, M.; De Almeida, K.N.; Trakas, K.; Peterson, L.R. A minimum 5.0 mL of sputum improves the sensitivity of acid-fast smear for Mycobacterium tuberculosis. Am. J. Respir. Crit. Care Med. 2000, 161, 1559–1562. [Google Scholar] [CrossRef] [PubMed]
- Alisjahbana, B.; van Crevel, R.; Danusantoso, H.; Gartinah, T.; Soemantri, E.S.; Nelwan, R.H.; van der Meer, J.W. Better patient instruction for sputum sampling can improve microscopic tuberculosis diagnosis. Int. J. Tuberc. Lung Dis. 2005, 9, 814–817. [Google Scholar] [PubMed]
- Mpagama, S.G.; Mtabho, C.; Mwaigwisya, S.; Mleoh, L.J.; Sumari-de Boer, I.M.; Heysell, S.K.; Houpt, E.R.; Kibiki, G.S. Comparison of overnight pooled and standard sputum collection method for patients with suspected pulmonary tuberculosis in northern Tanzania. Tuberc. Res. Treat. 2012, 2012, 128057. [Google Scholar] [CrossRef] [PubMed]
- Kent, P.; Kubica, G. Public Health Mycobacteriology: A Guide for Level III Laboratory; Centers for Disease Control and Prevention (CDC): Atlanta, GA, USA, 1985.
- Boehme, C.C.; Nicol, M.P.; Nabeta, P.; Michael, J.S.; Gotuzzo, E.; Tahirli, R.; Gler, M.T.; Blakemore, R.; Worodria, W.; Gray, C.; et al. Feasibility, diagnostic accuracy, and effectiveness of decentralised use of the Xpert MTB/RIF test for diagnosis of tuberculosis and multidrug resistance: A multicentre implementation study. Lancet 2011, 377, 1495–1505. [Google Scholar] [CrossRef]
- Boehme, C.C.; Nabeta, P.; Hillemann, D.; Nicol, M.P.; Shenai, S.; Krapp, F.; Allen, J.; Tahirli, R.; Blakemore, R.; Rustomjee, R.; et al. Rapid molecular detection of tuberculosis and rifampin resistance. N. Engl. J. Med. 2010, 363, 1005–1015. [Google Scholar] [CrossRef] [PubMed]
- Alland, D.; Rowneki, M.; Smith, L.; Ryan, J.; Chancellor, M.; Simmons, A.M.; Persing, D.; Kwiatkowski, R.; Jones, M.; Chakravorty, S. Xpert MTB/RIF Ultra: A New Near-Patient TB Test with Sensitivity Equal to Culture (Abstact 91). In Proceedings of the Conference on Retroviruses and Opportunistic Infections, Seattle, WA, USA, 23–26 February 2015. [Google Scholar]
Sputum Volume | Sensitivity | Specificity * | PPV | NPV |
---|---|---|---|---|
Standard Volume Xpert † (n = 172) | 12.5% (1/8) | 99.4% (163/164) | 50.0% (1/2) | 95.9% (163/170) |
[2.2%, 47.1%] | [96.6%, 99.9%] | [9.5%, 90.5%] | [91.7%, 98.0%] | |
Large Volume Xpert ‡ (n = 164) | 50.0% (4/8) | 99.4% (155/156) | 80.0% (4/5) | 97.5% (156/159) |
[21.5%, 78.5%] | [96.5%, 99.9%] | [37.6%, 96.4%] | [93.7%, 99.0%] |
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Badal-Faesen, S.; Firnhaber, C.; Kendall, M.A.; Wu, X.; Grinsztejn, B.; Escada, R.O.d.S.; Fernandez, M.; Hogg, E.; Sanne, I.; Johnson, P.; et al. Impact of Larger Sputum Volume on Xpert® MTB/RIF Assay Detection of Mycobacterium tuberculosis in Smear-Negative Individuals with Suspected Tuberculosis. J. Clin. Med. 2017, 6, 78. https://doi.org/10.3390/jcm6080078
Badal-Faesen S, Firnhaber C, Kendall MA, Wu X, Grinsztejn B, Escada ROdS, Fernandez M, Hogg E, Sanne I, Johnson P, et al. Impact of Larger Sputum Volume on Xpert® MTB/RIF Assay Detection of Mycobacterium tuberculosis in Smear-Negative Individuals with Suspected Tuberculosis. Journal of Clinical Medicine. 2017; 6(8):78. https://doi.org/10.3390/jcm6080078
Chicago/Turabian StyleBadal-Faesen, Sharlaa, Cynthia Firnhaber, Michelle A. Kendall, Xingye Wu, Beatriz Grinsztejn, Rodrigo Otavio da Silva Escada, Michel Fernandez, Evelyn Hogg, Ian Sanne, Pamela Johnson, and et al. 2017. "Impact of Larger Sputum Volume on Xpert® MTB/RIF Assay Detection of Mycobacterium tuberculosis in Smear-Negative Individuals with Suspected Tuberculosis" Journal of Clinical Medicine 6, no. 8: 78. https://doi.org/10.3390/jcm6080078
APA StyleBadal-Faesen, S., Firnhaber, C., Kendall, M. A., Wu, X., Grinsztejn, B., Escada, R. O. d. S., Fernandez, M., Hogg, E., Sanne, I., Johnson, P., Alland, D., Mazurek, G. H., Benator, D. A., Luetkemeyer, A. F., The AIDS Clinical Trials Group A5295, & Tuberculosis Trials Consortium Study 34 Teams. (2017). Impact of Larger Sputum Volume on Xpert® MTB/RIF Assay Detection of Mycobacterium tuberculosis in Smear-Negative Individuals with Suspected Tuberculosis. Journal of Clinical Medicine, 6(8), 78. https://doi.org/10.3390/jcm6080078