Pneumonia Severity Index Calculator

The Pneumonia Severity Index, also called the PORT score, adds twenty weighted items to a total and puts a patient with community-acquired pneumonia into one of five risk classes. Enter age and sex, the five comorbidities, the examination findings, the vital signs and whichever laboratory values were taken, and this returns the point total, the class, which items scored and by how much, and the 30-day mortality that class carried in the validation cohort of the original 1997 paper. Class I is assigned by the first step of the algorithm rather than by the total, and the tool says which route produced the answer. A second form turns a point total you already have into its class and mortality. The score is an input to a decision, never the decision: admission is the treating clinician's call.

Calculator Type

Temperature Unit

Celsius Fahrenheit

Urea Nitrogen and Glucose Are In

Conventional (mg/dL) SI (mmol/L)

Age (years) *

The PSI was derived in adults. It does not apply to children.

Sex

The rule subtracts 10 points for a female patient.

Nursing home resident

Neoplastic disease

Liver disease

Congestive heart failure

Cerebrovascular disease

Renal disease

Altered mental status

Respiratory Rate (breaths/min) *

Systolic Blood Pressure (mmHg) *

Temperature (C) *

In the unit selected below.

Pulse (beats/min) *

Arterial pH

Leave blank if no blood gas was taken. A blank is treated as normal, which is the rule's own convention and can understate the class.

Blood Urea Nitrogen (mg/dL)

Scores 20 points at 30 mg/dL or 11 mmol/L and above.

Sodium (mmol/L)

Glucose (mg/dL)

Scores 10 points at 250 mg/dL or 14 mmol/L and above.

Haematocrit (%)

PaO2 under 60 mmHg, or oxygen saturation under 90%

Pleural effusion on the chest radiograph

Widget