Why is TPN tapered before being discontinued?

Total Parenteral Nutrition (TPN) is tapered before discontinuation to prevent potential complications, such as hypoglycemia and electrolyte imbalances. Gradually reducing the TPN allows the patient's gastrointestinal system to adapt and resume normal function, minimizing the risk of gastrointestinal distress. This approach also ensures that the body can gradually adjust to receiving nutrients through enteral feeding or oral intake, promoting a smoother transition to normal nutrition.