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Brazilian Journal of Pharmaceutical Sciences

versão On-line ISSN 2175-9790


SILVA, Fernanda Schaefer Borges da et al. Use of the Ogawa-Kudoh method to isolate mycobacteria in a tuberculosis reference laboratory in northwestern Paraná, Brazil. Braz. J. Pharm. Sci. [online]. 2013, vol.49, n.3, pp.567-570. ISSN 2175-9790.

Culturing is the gold standard method for confirming a diagnosis of tuberculosis (TB). The Brazilian Ministry of Health recently proposed the use of the Ogawa-Kudoh method for sputa cultures to detect Mycobacterium tuberculosis. The aim of the present study was to evaluate 8 years of using the Ogawa-Kudoh method in a TB reference laboratory in northwestern Paraná, Brazil. The present study consisted of a retrospective analysis of sputa cultures records for the detection of mycobacteria using the Ogawa-Kudoh method in the Laboratory of Medical Bacteriology, Laboratory of Teaching and Research in Clinical Analysis (LEPAC), State University of Maringá, from July 2003 to September 2011. The following variables were analyzed: Ziehl Neelsen (Z-N) smears and cultures results and the age and gender of the patients. Sputa samples from 3,231 patients with suspected TB were analyzed. Of these, 67.17% were male with an average age of 45.58 years. Of the total number of Z-N-negative samples (n=2,949), 42 (1.42%) were positive for M. tuberculosis (p >0.05). The Ogawa-Kudoh method is an excellent tool for diagnosing pulmonary TB. It is easy to perform, requires less biosafety equipment than the Petroff method, has a low cost, and has good sensitivity for detecting of M. tuberculosis.

Palavras-chave : Mycobacterium tuberculosis [detection]; Ogawa-Kudoh method [evaluation]; Tuberculosis [diagnosis].

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