presence of history and symptoms, signs at physical examination and early laboratory clues of CAP According to the preliminary triage, in all patients, as a routine assessment, breath frequency, blood pressure and heart rate, pulse oxymetry, serum and blood analysis including creatinine and urea, CRP, blood cell counts and hemoglobin assay, were performed, also for CURB65 staging. ECG was preliminary done in all patients with chest pain, dyspnea and/or fever.