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bronchial washing |
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bronchial washing Etymology: Gk, bronchos, windpipe; ME, wasshen, to wash irrigation of the bronchi and bronchioles performed during bronchoscopy to cleanse the tubes and to collect specimens for laboratory examination. bronchial washing A procedure in which isotonic saline is instilled through a bronchoscope and fluid containing cells, microorganisms, or other material from the upper airways–trachea, bronchi, bronchioles is aspirated into a trap; the
material is then centrifuged to concentrate the cells, stained, and examined by microscopy, or cultured if infection is suspected. Cf Bronchial brushings. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The new diagnostic criteria contain more specific radiological criteria, whereas bacteriological criteria have become more lenient: a single NTM culture from bronchial washing fluid, in a well-defined class of patients, or two positive sputum cultures now suffice to establish the diagnosis. For example, a diagnosis of "atypical" made on a bronchial washing specimen and a diagnosis of "nonsmall cell carcinoma" made on a bronchial biopsy specimen are considered discrepant; a diagnosis of "atypical" on a liver aspiration specimen and a diagnosis of "cirrhosis" on a liver biopsy specimen are not discrepant. Smears for acid-fast bacilli (AFB) were positive on two bronchial washing samples. |
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