Q. A 33-year-old man presents to the clinic with a 2-week history of cough, wheezing, and shortness of breath. In addition, he reports a history of occasional smoking and exposure to second-hand smoke at work. On physical examination, the patient has crackles in the bilateral lung fields and decreased breath sounds in the right upper lobe. His temperature is 38.1°C (100.6°F), his heart rate is 110 beats per minute, and his blood pressure is 130/80 mmHg. Laboratory findings include a white blood cell count of 11,000/?L, hemoglobin of 14 g/dL, and platelet count of 375,000/?L. A chest radiograph reveals increased broncho vascular markings and patchy consolidation in the right upper lobe. What are the most appropriate evaluation and management of this patient's condition?