🦠 Mannheim Peritonitis Index (MPI)
Predict mortality in secondary peritonitis with the Mannheim Peritonitis Index.
Mannheim Peritonitis Index (MPI)
Age > 50 y
Female sex
Organ failure (renal/pulmonary/shock/intestinal obstruction)
Malignancy
Preoperative peritonitis > 24 h
Origin of sepsis not colonic
Diffuse (generalized) peritonitis
Character of exudate
When to use
Risk-stratify peritonitis to guide source control and monitoring intensity.
How it works
Sum 8 factors (age > 50, female, organ failure, malignancy, duration > 24 h, non-colonic origin, diffuse peritonitis, exudate character), range 0–47. < 21 low, 21–29 intermediate, > 29 high.
Key points
- > 29 corresponds to ≈ 59% mortality.
- A ≥ 26 dichotomy is also used.
- Integrate with APACHE II and lactate.
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.