Pneumonia Severity Index (PSI)Loading...SexMale0Female+10Nursing home residencyNo0Yes+10Neoplastic dzAbsent0Present+30Liver dzAbsent0Present+20CHFAbsent0Present+10Cerebrovasc dzAbsent0Present+10Renal dzAbsent0Present+10Mental statusNormal0Altered+20Resp RateUnder 30 per min0Over 30 per min+20SBPOver 90 mmHg0Under 90 mmHg+20Temp35-40 C0Over 40 C+15Under 35 C+15PulseUnder 125 per min0Over 125 per min+10Arterial pHNormal0Under 7.35+30BUNNormal0Over 30 mg per dL+20SodiumNormal0Under 130 mEq per L+20GlucoseNormal0Over 250 mg per dL+10HematocritNormal0Under 30%+10Arterial PO2Normal0Under 60 mmHg+10Pleural effusionAbsent0Present+10Ageyo.