Acute Pancreatitis in ICU — Atlanta Severity, Goal-Directed Fluids & the Step-Up Approach

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Target exams

Red flags

• Aggressive IV fluid resuscitation is harmful — WATERFALL (NEJM 2022) showed moderate goal-directed resuscitation with Ringer’s lactate caused less fluid overload than aggressive bolus therapy; titrate to BUN, haematocrit, lactate, urine output
• Do NOT give routine prophylactic antibiotics — ACG 2013: not recommended in severe AP and/or sterile necrosis. Poropat: mortality RR 0.85 and infected necrosis RR 0.81, neither significant
• ACG 2013: in severe acute pancreatitis enteral nutrition is recommended to prevent infectious complications; parenteral nutrition should be avoided. Do not quote an unsourced 48-hour mortality-reduction clock as if it were that abstract
• Persistent organ failure beyond 48 hours defines severe pancreatitis and mandates ICU admission — this is the Atlanta definition and the dominant mortality determinant
• ACG 2013: in stable infected necrosis delay drainage, preferably 4 weeks, to allow a wall — POINTER found postponed drainage needed fewer interventions (4.4 versus 2.6) without reducing the Comprehensive Complication Index
• Tan: early SIRS duration independently associated with infected pancreatic necrosis (OR 1.305); AUC 0.97 for persistent multi-organ failure, 0.92 for pancreatic infection, 0.86 for mortality
• Suspect infected necrosis with clinical deterioration, gas in the collection on CT, or rising inflammatory markers — the major late cause of death
• Valdivielso: triglycerides over 1000 mg per dL (11.3 mmol per L) — about 15 to 20 percent of such patients develop pancreatitis; plasmapheresis is repeatedly reported but unproven in randomised trials