A 56 year old mane comes to doctor with 4 day histor of fever, chills and a productive cough. He waas a riverboat captain who has been admitted to hospital at least two times per year for COPD exacerbations despite being on chronic oral prednison. His temp is 101.3 HR is 110 Resp is 18 BP is 150/120. Physical exam shows dullness to percussion and decreased breath sounds are heard over left lung base on auscultation of chest. Gram stain of sputum shows abundant neutrophls and gram negatie baili that grow out in aerobic cultures with blue/green pigment. 1. What is the diagnosis and why do you think this? 2. What drug is often first line to treat this?

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).