Abstract
Doctors in the United States who treat patients with pulmonary tuberculosis are being recommended to use powered air respirators - described in JAMA (1993;270:1903) as more at home in coal mines than hospitals and already nicknamed “Darth Vader” masks by those expected to use them. The masks are only one part of a comprehensive set of protective measures drawn up by the Occupational Safety and Health Administration, modified by revisions recommended by the Centers for Disease Control and Prevention. These two government agencies have prepared guidelines that cover isolation rooms, ultraviolet germicidal radiation, and the screening of health care workers, but the …
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