A comparison of the results of bacteriological examination of a sputum collection and a pair of laryngeal swab specimens in patients receiving chemotherapy for pulmonary tuberculosis
Velu, S.; Narayana, A.S.L. and Subbiah, T.V. (1961) A comparison of the results of bacteriological examination of a sputum collection and a pair of laryngeal swab specimens in patients receiving chemotherapy for pulmonary tuberculosis. Indian Journal of Tuberculosis, 8 (4). pp. 128-139.
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A comparison is presented between the results of examinations of collection specimens of sputum by smear and by culture with that of laryngeal swab specimens by culture only in patients with bacteriologically confirmed pulmonary tuberculosis from 3 to 12 months after start of anti-tuberculosis chemotherapy. The smears were examined by fluorescence microscopy and cultures were set up on Lowenstein-Jensen medium. The smear examination of the sputum yielded similar proportions of positive findings to the laryngeal swab cultures. Sputum cultures yielded the greatest number of positive results. The relative merits of the three methods of examination have been discussed. Contamination of sputum cultures was more common than contamination of laryngeal swab cultures. The possible explanations for this finding have been discussed.
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