What PMN count diagnoses SBP?

PMN ≥250 cells/mm3 in ascitic fluid with symptoms diagnoses SBP. Culture-negative SBP has identical prognosis and treatment. Spontaneous bacteremia with PMN <250 exists.

When is SBP prophylaxis indicated?

Primary prophylaxis: ascitic fluid total protein <1.5 g/dL with Child-Pugh ≥9 or MELD ≥25, or renal dysfunction. Secondary: all patients after first SBP episode (annual recurrence ~70%).

What is the mortality of SBP?

In-hospital mortality 20–30% despite antibiotics; 1-year mortality after first episode approximately 30–50%. SBP with renal failure (hepatorenal syndrome type 1) carries >80% in-hospital mortality.

Spontaneous Bacterial Peritonitis Probability Calculator

Calculate probability of spontaneous bacterial peritonitis (SBP) from ascitic fluid PMN count. Diagnosis: PMN ≥250 cells/mm3. Assess 1-year SBP recurrence risk and prophylaxis indication.

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Frequently Asked Questions

What PMN count diagnoses SBP?

When is SBP prophylaxis indicated?

What is the mortality of SBP?