Pneumonia Severity Index (PSI) Score Calculator

Demographic factors

Physical examination
Additional tests

Score : - Class :

Mortality :

Advice :

Pneumonia Severity Index (PSI)

Pneumonia severity index (PSI) refers to a clinical predictive score that doctors can use to calculate the probability of morbidity and mortality among subjects. suffering from community-acquired pneumonia.

In other words, through this tool, the physician carries out a risk stratification in patients with community-acquired pneumonia (CAP).

In some cases, clinicians, in particular doctors assigned to the emergency room and emergency and urgent services, use the PSI score to decide on the need for hospitalization or not, or, alternatively, to perform an attempt at-home treatment. The mortality prediction given by the use of the PSI score is substantially similar to that obtained by using the CURB-65, the PSI sensitivity was higher even if the CURB score is much easier to use.

The stratification of the risk with the classification of the patient in one of the five classes allows the clinician to orient himself not only on a possible treatment at home, but also on the need for hospitalization for brief intensive observation, in a medicine or pulmonology ward, or still in the intensive care unit.

Pneumonia Severity Index (PSI) Score Calculator

A patient with class  1 or class  2 pneumonia may be discharged home with oral antibiotics.

A class III-risk patient may, after evaluation of other factors, including the home environment and follow-up, either:

They are sent home with oral antibiotics.

He is admitted to the hospital for a short time with antibiotic treatment and monitoring.

Patients with class  4 to 5 pneumonia should be hospitalized for treatment.