Table 1. Severe Acute Pancreatitis Criteria.

Diagnose of severe AP	Criteria
Early Prognostic Scores	Ranson ≥ 3
	APACHE II ≥ 8
Organ Failure	Systolic pressure < 90 mmHg
	PaO2 ≤ 60 mmHg
	Creatinine > 2.0 mg/L after rehydratation
	Gastrointestinal bleeding > 500 cc/24 h
Local Complications (on CT scan)	Necrosis
	Abcess
	Pseudocyst