Pneumoniacalculators general infectiologyPneumonia 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. ResetDemographic factorsage Sex male female Nursing home residentCoexisting illness Neoplastic disease Liver disease Congestive heart failure Cerebrovascular disease Renal diseasePhysical-examination findings Altered mental status Respiratory rate ≥ 30/min Systolic blood pressure < 90 mmHg Temperature < 35°C or ≥ 40°C Pulse ≥ 125/minLaboratory 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 }}