Acute Pancreatitis: Diagnosis and Management
Written by Dr. Muhammad Salar Raza · Manually reviewed by Dr. Muhammad Salar Raza · Content updated
Clinical Pathway
Diagnose acute pancreatitis with two of three criteria: typical epigastric pain radiating to the back, lipase or amylase at least three times the upper limit of normal, and characteristic imaging. Assess severity and hydration, then begin early, goal-directed isotonic crystalloid therapy with frequent reassessment, with adequate analgesia and antiemetics. Start enteral feeding as soon as tolerated, favouring oral or nasojejunal routes over parenteral nutrition. Identify the cause: gallstones and alcohol dominate, so obtain liver tests and a right upper quadrant ultrasound. Urgent ERCP is indicated only for cholangitis or progressive biliary obstruction. Monitor for necrosis, fluid collections, respiratory failure, and organ dysfunction, escalating to high-dependency care when severe.
Clinical Reasoning
Lipase is more specific and stays elevated longer than amylase, making it the preferred enzyme. The two questions that change management are whether the cause is gallstones and whether cholangitis coexists, because only these demand early ERCP. Routine prophylactic antibiotics do not improve outcomes and are reserved for confirmed infected necrosis. Assess volume status and use goal-directed fluids with repeated checks of perfusion, urine output and signs of overload; avoid a routine aggressive-volume approach. Parenteral nutrition and prolonged starvation are outdated; the gut should be fed early. Recurrent idiopathic pancreatitis warrants evaluation for hypertriglyceridemia, hypercalcemia, and pancreatic malignancy in older patients.
Sample MCQ
A 40-year-old man presents with severe epigastric pain radiating to his back after an alcohol binge, with vomiting. Lipase is five times the upper limit of normal. He is tachycardic but normotensive. What is the most important initial management step?
- AEarly goal-directed intravenous isotonic crystalloid therapy
- BUrgent ERCP for all patients
- CProphylactic intravenous meropenem
- DTotal parenteral nutrition and strict starvation for 2 weeks
Correct Answer: Early goal-directed intravenous isotonic crystalloid therapy
Initial care includes goal-directed isotonic crystalloid therapy with frequent reassessment, analgesia and early oral or enteral feeding as tolerated. Avoid indiscriminate aggressive-volume resuscitation. ERCP is reserved for an appropriate biliary indication such as cholangitis; routine prophylactic antibiotics and prolonged starvation are not standard treatment.
Guidelines and further reading
Related Clinical Topics
Acute Appendicitis: Diagnosis and Management
Suspect appendicitis when periumbilical pain migrates to the right iliac fossa with anorexia, low-grade fever, and localized guarding. Examine for McBurney point tenderness, rebound, and Rovsing sign, and support the diagnosis with neutrophilia and elevated CRP. Ultrasound is the first imaging choice in children and pregnancy, with CT for equivocal adults. Definitive treatment is appendectomy, usually laparoscopic, after intravenous fluids, analgesia, and preoperative antibiotics. Perforated appendicitis with generalized peritonitis needs urgent surgery and broader antibiotics, while a stable contained appendiceal mass may be managed with antibiotics and interval appendectomy. Do not delay surgery for prolonged observation once the diagnosis is clear.
Acute Cholecystitis: Diagnosis and Management
Suspect acute cholecystitis with prolonged right upper quadrant or epigastric pain, fever, and a positive Murphy sign, typically after fatty meals in a patient with gallstone risk factors. Confirm with right upper quadrant ultrasound showing gallstones, wall thickening, pericholecystic fluid, or a sonographic Murphy sign. Initial management is nil by mouth, intravenous fluids, analgesia, and antibiotics covering enteric organisms, such as ceftriaxone plus metronidazole. Early laparoscopic cholecystectomy within the index admission is the definitive treatment for fit patients. High-risk surgical candidates may need percutaneous cholecystostomy for drainage. Distinguish complications: empyema, gangrene, perforation, and ascending cholangitis with Charcot triad.
Small Bowel Obstruction: Diagnosis and Management
Suspect mechanical obstruction with colicky central abdominal pain, distension, vomiting, and absolute constipation, especially with previous abdominal surgery. Examine for distension, high-pitched or absent bowel sounds, hernias, and signs of strangulation such as peritonism or shock. Erect abdominal X-ray shows dilated small bowel loops with air-fluid levels, while CT with contrast defines the level, cause, and complications. Initial management is nil by mouth, nasogastric decompression, intravenous fluids, electrolyte correction, and catheterization with monitoring. Adhesive partial obstruction without danger signs may settle conservatively with a defined trial period, but complete obstruction, strangulation, closed-loop obstruction, or failure to improve requires urgent laparotomy.
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