نتایج جستجو برای: tuberculin skin test
تعداد نتایج: 988895 فیلتر نتایج به سال:
The predictive value of induration 24 hours after administration of purified protein derivative (PPD) was examined. Altogether 1082 healthy schoolchildren were tested using 5 tuberculin units of PPD. Induration was measured at 24, 48, and 72 hours. At 24 hours, induration of any size had a relatively low positive predictive value (63%), although indurations > 5 mm had a higher (86%) positive pr...
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Background As healthcare workers (HCWs), medical trainees are at a high-risk for acquisition of tuberculosis (TB) infection and disease. To our knowledge, there are no published data about TB infection among medical trainees in Tunisia.To determine the tuberculin skin test (TST) positivity and tuberculin conversion among a group of medical trainees in different departments at our institution. ...
The tuberculin skin test (TST) is a simple and inexpensive test to determine whether individuals have been exposed to Mycobacterium tuberculosis. This test is not always reliable, however, in people previously immunized with BCG and/or who have been exposed to environmental mycobacterial species due to a reaction to purified protein derivative (PPD) used in the skin test. An issue with BCG, the...
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