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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Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

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

Each component has a specific meaning:

  • Ascitic fluid PMN count — The ascitic fluid pmn count recorded for the scenario being assessed.

Note: Interpret the sbp probability result against the thresholds and context described above.

How to Use

Enter the ascitic fluid PMN count for the scenario you are assessing. 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. Use the sbp probability result to inform your calculation.

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Frequently Asked Questions