A 23 yo homeless dude with a hx of IVDU comes to ED due to sudden high fever, severe dyspnea nad malaise. An hour later dude develops progressive respiratory distress and supplemental oxrygen is provided. The mofo had a CD4 cell count of 188. Examination of fluid obtained on bronchoalveolar lavage shows a predominant organism when stained with methenamine. 1. What pathology do you think this dude has going on and why? 2. What kind organism is it? 3. How would you treat it?

The main function of the respiratory system is gas exchange (O2 and CO2). Ventilation is the movement of air through the respiratory tract into (inspiration) and out of (expiration) the respiratory zone (lungs).