Yield of Acid-fast Bacilli by Direct Sputum Smear Examination with Bronchial Washings and Post-bronchoscopy Sputum Smear Examination
Journal Title: INTERNATIONAL JOURNAL OF SCIENTIFIC STUDY - Year 2017, Vol 5, Issue 7
Abstract
Backgrounds and Objectives: The objective of the present study is to evaluate the yield of acid-fast bacilli (AFB) by direct sputum smear examination with bronchial washings and post-bronchoscopy sputum smear examination. Materials and Methods: This prospective study was conducted on 50 patients with suspected pulmonary tuberculosis (TB) for a period of October 2009-September 2011 at Kamineni Institute of Medical Sciences Hospital, Narketpally, Nalgonda. Results: Out of 50 clinically suspected, sputum smear-negative cases, 19 cases were diagnosed as active pulmonary TB. Bronchial washings for AFB smear were positive in 16/50 (32%) of cases, and post-bronchoscopic sputum smear was positive in 8/50 (16%) of cases. Both bronchial washings and post-bronchoscopic sputum smear for AFB were positive in 5 (10%) cases. 3/8 additional cases are diagnosed by post-bronchoscopic sputum smear over the bronchial washings. A total yield of bronchoscopy in the diagnosis of sputum-negative pulmonary TB was 38.00%, of which bronchial washing smear samples are superior in the diagnosis and is contributed to 32%. Conclusion: It has shown that additional yield of 38% more than direct sputum smear examination helps to initiate early treatment of TB.
Authors and Affiliations
K Raj Kumar, K Surendar Reddy, M Ramulu, K Venu
Keywords
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