A 28-year-old HIV (+) male patient presents to the ER compla…
A 28-year-old HIV (+) male patient presents to the ER complaining of shortness of breath, non-productive cough, and fever. Vital signs for the patient are as follows: T: 101°F (orally)BP: 110/70 (left arm, seated)HR: 118/min, regularRR: 26/minO2 saturation (room air): 88% Lung examination reveals bibasilar rales, and is otherwise unremarkable. Chest radiograph (CXR) demonstrates diffuse bilateral infiltrates, and arterial blood gas (ABG) reveals significant hypoxemia. Based on this information, which of the following conditions is the most likely diagnosis for this patient?
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