Pneumonia calculators general infectiology Pneumonia Severity Index (PSI) Calculates the PSI-Score based on this article. The PSI-Score can be used to stratify the mortality in community acquired pneumonia. Reset Demographic factors age Sex male female Nursing home resident Coexisting illness Neoplastic disease Liver disease Congestive heart failure Cerebrovascular disease Renal disease Physical-examination findings Altered mental status Respiratory rate ≥ 30/min Systolic blood pressure < 90 mmHg Temperature < 35°C or ≥ 40°C Pulse ≥ 125/min Laboratory and radiographic findings Arterial pH < 7.35 Blood urea nitrogen ≥ 30 mg/dl (11 mmol/l)≈ Urea ≥ 64,2 mg/dl Sodium < 130 mmol/l Glucose ≥ 250 mg/dl (14 mmol/l) Hematocrit < 20 % paO2 < 60 mmHg Pleural effusion {{ psi }} Risk Class {{ riskClass }}: {{ riskClassText }}