GASTROINTESTINAL (GI) AND NUTRITION Gastrointestinal (GI) and Nutrition Gastrointestinal (GI) PathologyAbdominal Compartment SyndromeGI BleedingStress Gastritis ProphylaxisOpen Abdomen (OA) and Temporary Abdominal Closure (TAC) – The O.R.Difficult Abdominal Closure – The O.R.Hepatopancreatobiliary (HPB)Acute Cholangitis – The O.R.Acute Pancreatitis – The O.R.Necrotizing Pancreatitis – The O.R.Pancreatic Fistula – The O.R.NutritionNutritional RequirementsNutritional AssessmentMetabolic Effects of Critical IllnessSupplemental NutritionEnteral Nutrition (Tube Feeds)Parenteral Nutrition (TPN)Percutaneous Endoscopic Gastrostomy (PEG)