Community-acquired pneumonia

摘要

A 39-year-old man presented with fever (38.7°C), cough and right chest pain on inspiration. His blood pressure was 125/75 mm Hg, heart rate was 88 beats/min, respiration was 20 breaths/min and oxygen saturation on room air was 94%. Physical examination was remarkable only for crackles over the right upper lung field. Results of blood tests showed an elevated leukocyte count of 16.5 (normal 4.0-10.0) x 10YL and were otherwise normal. Urinary testing for Legionella pneu-mophila and Streptococcus pneumoniae antigens was negative. Chest radiography showed pneumonia in the right upper lobe (Figure 1). Because the patient was at low risk for death (class I on the Pneumonia Severity Index),' we prescribed oral penicillin and clarithromycin, and discharged the patient home.