Sepsis mortality prediction based on predisposition, infection and response

Area of Science:

• Critical Care Medicine
• Infectious Diseases
• Epidemiology

Background:

• Sepsis poses a significant global health challenge with high mortality rates.
• Accurate prediction of sepsis-related mortality is crucial for effective patient management.
• The existing PIRO (predisposition, insult, response, organ dysfunction) concept requires empirical validation for mortality prediction in sepsis.

Purpose of the Study:

• To evaluate the applicability of a modified PIRO concept for predicting mortality in patients with infection and sepsis.
• To test the predictive value of predisposition, insult, and response factors on sepsis mortality using a large multicenter database.

Main Methods:

• A substudy of the SAPS 3 multicenter, multinational cohort study.
• Included 2,628 ICU patients with infection or sepsis requiring >48h stay.
• Utilized three variable boxes based on the PIRO concept: predisposition, infection (insult), and response (SOFA score at 48h).

Main Results:

• The study analyzed 2,628 patients, with 40.6% overall hospital mortality.
• Higher mortality was observed in patients with septic shock (52.5%) compared to infection alone (34.7%).
• Factors related to predisposition, infection, and response were significantly associated with hospital mortality.

Conclusions:

• A modified three-level PIRO system can objectively define risk for sepsis mortality.
• This system aids physicians in stratifying ICU patients at admission or shortly after.
• Improved patient stratification can lead to better-tailored management strategies based on individual risk of death.