Question 1

Is Ranson still used in clinical practice?

Accepted Answer

Less commonly than in the past. BISAP and the Atlanta classification are preferred because BISAP can be calculated within 24 hours and Atlanta provides a direct clinical classification. Ranson remains useful in resource-limited settings where CT imaging and complex scoring may not be available, and it is still referenced in surgical literature.

Question 2

Can Ranson criteria distinguish biliary from alcoholic pancreatitis?

Accepted Answer

The Ranson criteria have different thresholds depending on the aetiology in some versions, but most contemporary applications use the same criteria for all aetiologies. Aetiology-specific criteria recommended by Ranson (biliary vs. alcoholic) are not widely used today.

Question 3

What if the patient is transferred from another hospital at 24 hours?

Accepted Answer

If the patient arrives at 24 hours, you can still calculate the admission criteria using values from the referring hospital. The 48-hour criteria must be measured 48 hours from the time of symptom onset or admission, whichever is standard at your institution. Document the timing clearly.

Question 4

Do I need arterial blood gas for PaO₂?

Accepted Answer

The PaO₂ criterion requires an ABG. If ABG is not available, some clinicians use SpO₂ as a surrogate, though this substitution has not been formally validated. In practice, if the patient does not have respiratory distress and SpO₂ is > 95% on room air, this criterion is unlikely to be met.