Diagnosis and Management of Acute Pancreatitis

Diagnosis

The diagnosis of acute pancreatitis requires at least two of three criteria: characteristic abdominal pain, elevated pancreatic enzymes, and characteristic findings on imaging, with treatment approach determined by severity classification, as recommended by the World Journal of Emergency Surgery and Gut 1, 2
Upper abdominal pain and vomiting with epigastric or diffuse abdominal tenderness are common clinical findings, according to Gut 4
Serum lipase is preferred over amylase due to higher specificity and sensitivity, as stated by Gut and Praxis Medical Insights 2, 3
The etiology should be determined in at least 80% of cases, with no more than 20-25% classified as "idiopathic", according to Gut 7, 2

Acute pancreatitis is classified as mild, moderately severe, or severe, with severe cases having persistent organ failure >48 hours, as defined by the World Journal of Emergency Surgery and Gut 1, 2
Clinical impression of severity, obesity, APACHE II score, and C-reactive protein >150 mg/L are prognostic indicators, as reported by Gut 2, 5

Enteral nutrition is preferred over parenteral nutrition, and should be started within 48 hours of presentation, as recommended by Gut and Praxis Medical Insights 2, 5
Urgent ERCP should be performed in patients with severe gallstone pancreatitis, cholangitis, jaundice, or dilated common bile duct, according to Praxis Medical Insights and Gut 5, 7
Image-guided fine needle aspiration is recommended for patients with persistent symptoms and >30% pancreatic necrosis, as stated by Praxis Medical Insights 5
The American Gastroenterological Association recommends against the routine use of antibiotics in mild pancreatitis, and against delaying ERCP in severe gallstone pancreatitis with cholangitis, as reported by Gut and Praxis Medical Insights 6, 5