If the score < 3, severe pancreatitis is unlikely
Or
Score 0 to 2 : 2% mortality
Score 3 to 4 : 15% mortality
Score 5 to 6 : 40% mortality
Score 7 to 8 : 100% mortality

APACHE II score
"Acute Physiology And Chronic Health Evaluation" (APACHE II) score > 8 points predicts 11% to 18% mortality
Hemorrhagic peritoneal fluid
Obesity
Indicators of organ failure
Hypotension (SBP <90 mmHG) or tachycardia > 130 beat/min
PO2 <60 mmHg
Oliguria (<50 mL/h) or increasing BUN and creatinine
Serum calcium < 1.90 mmol/L (<8.0 mg/dL) or serum albumin <33 g/L (<3.2.g/dL)>

Balthazar score
Developed in the early 1990s by Emil J. Balthazar et al., the Computed Tomography Severity Index (CTSI) is a grading system used to determine the severity of acute pancreatitis. The numerical CTSI has a maximum of ten points, and is the sum of the Balthazar grade points and pancreatic necrosis grade points:
Balthazar grade

Necrosis score

CTSIs staging of acute pancreatitis severity has been shown by a number of studies to provide more accurate assessment than APACHE II, Ranson, and C-reactive protein (CRP) level. However, a few studies indicate that CTSI is not significantly associated with the prognosis of hospitalization in patients with pancreatic necrosis, nor is it an accurate predictor of AP severity. Glasgow score
The Glasgow score is valid for both gallstone and alcohol induced pancreatitis, whereas the Ranson score is only for alcohol induced pancreatitis. If a patient scores 3 or more it indicates severe pancreatitis and the patient should be considered for transfer to ITU.
Disadvantages of a naso-enteric feeding tube include increased risk of sinusitis (especially if the tube remains in place greater than two weeks) and a still-present risk of accidentally intubating the trachea even in intubated patients (contrary to popular belief, the endotracheal tube cuff alone is not always sufficient to prevent NG tube entry into the trachea). Oxygen
Oxygen may be provided in some patients (about 30%) if Pao2 levels fall below 70mm of Hg. Antibiotics
Up to 20 percent of people with acute pancreatitis develop an infection outside the pancreas such as bloodstream infections, pneumonia, or urinary tract infections. These infections are associated with an increase in mortality. When an infection is suspected, antibiotics should be started while the source of the infection is being determined. However, if cultures are negative and no source of infection is identified, antibiotics should be discontinued. Preventative antibiotics are not recommended in people with acute pancreatitis, regardless of the type (interstitial or necrotizing) or disease severity (mild, moderately severe, or severe)

ERCP
In 30% of those with acute pancreatitis, no cause is identified. ERCP with empirical biliary sphincterotomy has an equal chance of causing complications and treating the underlying cause, therefore, is not recommended for treating acute pancreatitis. If a gallstone is detected, Endoscopic retrograde cholangiopancreatography (ERCP), performed within 24 to 72 hours of presentation with successful removal of the stone, is known to reduce morbidity and mortality.