Severe Community-Acquired Pneumonia ScoreLoading...Arterial pH < 7.30No0Yes+13Systolic pressure < 90 mmHgNo0Yes+11Respiratory rate > 30 breaths/minNo0Yes+9BUN >; 30 mg/dL (> 10.7 mmol/L)No0Yes+5Altered mental statusNo0Yes+5PaO2 < 54 mmHg (or PaO2/FiO2 < 250 mmHg)No0Yes+6Age ≥ 80 yearsNo0Yes+5Multilobar/bilateral X-rayNo0Yes+5