Nutritional support in acute pancreatitis.

Area of Science:

• Gastroenterology and Hepatology
• Critical Care Medicine
• Nutritional Science

Background:

• Acute pancreatitis induces a hyperdynamic, consumptive state with significant hemodynamic and metabolic alterations.
• Key metabolic changes include increased protein catabolism, glucose intolerance, and altered substrate utilization.
• Metabolic support is essential for preserving organ function during critical illness.

Purpose of the Study:

• To review the metabolic and nutritional challenges in acute pancreatitis.
• To discuss optimal nutritional substrate provision and delivery routes.
• To provide evidence-based recommendations for nutritional management in acute pancreatitis.

Main Methods:

• Literature review of metabolic and nutritional support in acute pancreatitis.
• Analysis of substrate utilization and delivery methods (parenteral vs. enteral).
• Synthesis of current evidence regarding optimal nutritional strategies.

Main Results:

• Acute pancreatitis patients require increased protein and a mixed fuel system (fat, protein, glucose).
• Intravenous fat is a safe energy substrate in the absence of hyperlipidemia.
• Parenteral nutrition (PN) may be preferred during severe acute pancreatitis for pancreatic rest.

Conclusions:

• Nutritional management in acute pancreatitis should address increased metabolic demands and altered substrate utilization.
• PN is recommended for severe cases, with a transition to jejunal enteral feedings as inflammation subsides.
• Optimizing nutritional support is vital for patient recovery and preventing complications.