A 38-year-old man with a 10-year history of alcohol abuse presents to the emergency department with severe epigastric pain radiating to the back, nausea, and vomiting for 6 hours. On examination, he is febrile (38.5°C), tachycardic (110/min), and has severe epigastric tenderness with guarding. Serum amylase is 1200 U/L (normal <100) and lipase is 2400 U/L. Abdominal ultrasound shows a swollen pancreas with peripancreatic fluid. What is the most appropriate immediate next step in management?

Explanation

## Management of Acute Pancreatitis: Early Phase ### Rationale for Correct Answer **Key Point:** The cornerstone of acute pancreatitis management in the first 24–48 hours is aggressive fluid resuscitation, not antibiotics or advanced imaging. This patient has confirmed acute pancreatitis (elevated amylase and lipase, clinical presentation, imaging findings). The immediate priority is: 1. **Aggressive IV fluid resuscitation** — target urine output 0.5–1 mL/kg/hour 2. **Nil per os** — rest the pancreas 3. **Analgesia and antiemetics** — symptom control 4. **Monitoring for organ failure** — SOFA score, lactate ### Why Early Fluid Resuscitation is Critical **High-Yield:** Inadequate fluid resuscitation in the first 24–48 hours is the single most modifiable risk factor for progression to organ failure and mortality in acute pancreatitis. - Hypovolemia → pancreatic hypoperfusion → tissue necrosis → systemic inflammation → MODS - Target: 250–500 mL/hour normal saline (or Ringer's lactate) depending on baseline hydration and urine output - Monitor: serum creatinine, BUN, urine output, lactate ### Role of Antibiotics, Imaging, and Steroids | Intervention | Timing | Indication | | --- | --- | --- | | **Antibiotics** | Day 3–5 onwards | Only if infected necrosis suspected (fever, organ failure, imaging findings) | | **CT abdomen** | Day 3–5 onwards | To assess necrosis, organ failure, complications; NOT in first 24–48 hours | | **Corticosteroids** | Not indicated | No evidence of benefit; may increase infection risk | | **ERCP** | Day 1–2 only if cholangitis present | Not routine; reserved for biliary obstruction | **Clinical Pearl:** Early CT (within 24 hours) is NOT recommended because: - Pancreatic necrosis may not be visible in the first 48 hours - Contrast may worsen renal function if patient is hypovolemic - Management does not change based on early imaging ### Monitoring Severity **Mnemonic: SOFA** — Sequential Organ Failure Assessment - Respiratory: PaO₂/FiO₂ ratio - Coagulation: INR, platelet count - Liver: bilirubin - Cardiovascular: MAP, vasopressor requirement - CNS: GCS - Renal: creatinine, urine output Patients with ≥2 organ failures require ICU admission and consideration of transfer to a specialized centre. [cite:Harrison 21e Ch 329]