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Safety and tolerability of sputum induction in adolescents and adults with suspected pulmonary tuberculosis

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European Journal of Clinical Microbiology & Infectious Diseases Aims and scope Submit manuscript

Abstract

Sputum induction by the inhalation of hypertonic saline may increase the yield of microbiological diagnosis of pulmonary tuberculosis (TB). This is particularly relevant in paucibacillary TB, such as in children or human immunodeficiency virus (HIV)-infected patients. Sputum induction must be shown to be safe and tolerable in community settings where invasive diagnostic methods are unavailable. The objective of this study was to describe the changes in physiological parameters and adverse events occurring during sputum induction in ambulatory adult and adolescent TB suspects recruited in community clinics. Sputum induction was performed in HIV-infected (n = 35) and HIV-uninfected (n = 67) TB suspects (n = 102). Oxygen saturation (%), blood pressure (mm Hg), heart rate (/minute), respiratory rate (/minute), and adverse events were monitored at baseline, continuously during the salbutamol pre-treatment and saline nebulization phases, and for 30 min afterwards. During nebulization, there was a statistically significant increase in oxygen saturation (1%, p < 0.0001), systolic BP (7 mm Hg, p < 0.0001), and diastolic BP (2 mm Hg, p = 0.008). Post-nebulization decrease in the systolic BP occurred (4 mm Hg, p = 0.016). These changes were not considered to be clinically significant. Eight minor, transitory, self-resolving adverse events occurred (labored breathing, n = 2; chest pain, n = 2; paroxysmal coughing, n = 1; elevated heart rate, n = 1; vomiting, n = 1; hypotension, n = 1), leading to procedure termination in four participants. No serious adverse events occurred. Induced sputum is safe, tolerable, and feasible in adult and adolescent TB suspects in a community healthcare setting.

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Acknowledgments

H.D.G., W.K., N.B., M.T., and M.H. played significant roles in the collection of the data. All authors played a significant role in the planning, analysis, and manuscript preparation.

Funding

This work was supported by the National Institutes of Health (NIH/NIAID/DMID 1R01-AI075603-01). The authors declare that they have no conflict of interest.

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Correspondence to H. D. Geldenhuys.

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Geldenhuys, H.D., Kleynhans, W., Buckerfield, N. et al. Safety and tolerability of sputum induction in adolescents and adults with suspected pulmonary tuberculosis. Eur J Clin Microbiol Infect Dis 31, 529–537 (2012). https://doi.org/10.1007/s10096-011-1344-5

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  • DOI: https://doi.org/10.1007/s10096-011-1344-5

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