Role of repeat sputum microscopy in case finding at A P. H.I.
Premanand, R. and Sundaramma, M. (1987) Role of repeat sputum microscopy in case finding at A P. H.I. Indian Journal of Tuberculosis, 34 (4). pp. 187-188.
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Four thousand and sixty three patients with chest symptoms and abnormal X-ray lung shadows suggesting Pulmonary Tuberculosis were subjected to spot sputum microscopy for Acid Fast Bacilli (AFB) which gave a case yield of 1,619(39.8%). The remaining who were negative for AFB in the spot sputum sample were investigated under service conditions at a P.H.T. by collecting repeat sputum sample of morning’s first expectorates on three separate days to examine for AFB. The diagnostic contribution of these repeat samples was analysed. There was an additional case yield of 12.6% from these repetitious over that (39.8%) provided by the spot sputum. Most (95.1%) of these repeat positives were got from the first repeat sample itself, the second and the third repeats providing only 3.1% and 1.0% of the additional positives respectively. Thus, under programme conditions, microscopy of a single repeat sputum sample collected from a morning’s first expectorate adds substantially to case finding.
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