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23.A 19-year-old comes to the office to be screened for tuberculosis. The patient works in a long-term care facility. She says that she lives with a friend who was diagnosed with tuberculosis 2 months ago and is currently on treatment. The PPD test is administered and the patient returns 48 hours after the test to have the result read. The site of the test is reddened and raised about 7 mm. This PPD would be read as having which of the following results?
24.A newly admitted patient presents with altered behavior and changes in mood. Upon closer inspection, the patient also has muscle rigidity which progressed to choreiform movements. What is the best diagnosis for this?
25.An HIV-positive woman is 8 weeks pregnant. To prevent maternal-fetal HIV transmission, zidovudine (AZT) is administered. Which of the following shows the appropriate way and schedule of administrating this medication to pregnant women?