Answer to Question 1
ANS: A, C, D, E
Isoniazid, pyrazinamide, ethambutol, and rifabutin could be included in the treatment of a patient with HIV/AIDS. Rifampin is contraindicated as part of the new antituberculosis regimen, because it would reduce the effects of the protease inhibitors.
Answer to Question 2
ANS: A
Optic neuritis is a dose-related adverse effect of ethambutol. Patients receiving this drug should have color vision and visual acuity testing before therapy starts and periodically thereafter. A CBC, hearing evaluations, and hepatic function testing are not recommended.