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The relative air pressure difference between two areas in a health-care facility. A room that is at negative pressure has a lower pressure than adjacent areas, which keeps air from flowing out of the room and into adjacent rooms or areas.
Industry:Health care
An occurrence, usually an infection, that is acquired in a hospital or as a result of medical care.
Industry:Health care
A second-line, oral anti-TB drug used for treating drug-resistant TB.
Industry:Health care
The pathologic, physiologic, or biochemical process by which a disease develops.
Industry:Health care
The quality of producing or the ability to produce pathologic changes or disease. Some nontuberculous mycobacteria are pathogenic (e.g., Mycobacterium kansasii), and others are not (e.g., Mycobacterium phlei).
Industry:Health care
Free-standing portable devices that remove airborne contaminants by recirculating air through a HEPA filter.
Industry:Health care
A reaction to the purified protein derivative (PPD)- tuberculin skin test that suggests the person tested is infected with M. tuberculosis. The person interpreting the skin-test reaction determines whether it is positive on the basis of the size of the induration and the medical history and risk factors of the person being tested.
Industry:Health care
Treatment of latent TB infection used to prevent the progression of latent infection to clinically active disease. Purified protein derivative (PPD)-tuberculin A purified tuberculin preparation that was developed in the 1930s and that was derived from old tuberculin. The standard Mantoux test uses 0.1 mL of PPD standardized to 5 tuberculin units.
Industry:Health care
A purified tuberculin preparation that was developed in the 1930s and that was derived from old tuberculin. The standard Mantoux test uses 0.1 mL of PPD standardized to 5 tuberculin units.
Industry:Health care
A method used to evaluate the likelihood that a person is infected with M. tuberculosis. A small dose of tuberculin (PPD) is injected just beneath the surface of the skin, and the area is examined 48-72 hours after the injection. A reaction is measured according to the size of the induration. The classification of a reaction as positive or negative depends on the patient's medical history and various risk factors (see Mantoux test).
Industry:Health care
