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A change in PPD test results from negative to positive. A conversion within a 2-year period is usually interpreted as new M. tuberculosis infection, which carries an increased risk for progression to active disease. A booster reaction may be misinterpreted as a new infection (see Booster phenomenon and Two-step testing).
Industry:Health care
A method of viewing the respiratory system by using radiation to transmit an image of the respiratory system to film. A chest radiograph is taken to view the respiratory system of a person who is being evaluated for pulmonary TB. Abnormalities (e.g., lesions or cavities in the lungs and enlarged lymph nodes) may indicate the presence of TB.
Industry:Health care
A method for culturing a specimen that allows for rapid detection of bacterial growth by measuring production of CO2 by viable organisms; also a method of rapidly performing susceptibility testing of M. tuberculosis.
Industry:Health care
Ventilation in which all or most of the air that is exhausted from an area is returned to the same area or other areas of the facility.
Industry:Health care
Any particular TB treatment plan that specifies which drugs are used, in what doses, according to what schedule, and for how long.
Industry:Health care
A record-keeping method for collecting clinical, laboratory, and radiographic data concerning TB patients so that the data can be organized and made available for epidemiologic study.
Industry:Health care
The ability of some strains of bacteria, including M. tuberculosis, to grow and multiply in the presence of certain drugs that ordinarily kill them; such strains are referred to as drug-resistant strains.
Industry:Health care
A first-line, oral anti-TB drug that, when used concomitantly with INH and pyrazinamide, provides the basis for short-course therapy.
Industry:Health care
Devices (either fixed or portable) that remove airborne contaminants by recirculating air through a HEPA filter.
Industry:Health care
