Review Question - QID 108943

A 55-year-old HIV-positive male presents to the emergency room complaining of fever and malaise. He reports a two-week history of intermittent fevers, fatigue, dry cough, and progressively worsening shortness of breath. His CD4 count is 150 cells/mm^3 and viral load is 2,000 copies/ml. He is on antiretroviral medications but admits to missing several doses. He has not seen his infectious disease doctor in six months. His past medical history is also notable for gout and diabetes mellitus. He has a 20 pack-year smoking history and was previously a heavy user of cocaine. His temperature is 101.0°F (38.3°C), blood pressure is 115/60 mmHg, pulse is 110/min, respirations are 24/min, and oxygen saturation on room air is 92%. Physical examination reveals rales at the bilateral lung bases. A bronchoalveolar lavage is performed and a silver stain of the sample is shown in Figure A. Which of the following is the most appropriate treatment for this patient’s condition?