Total Parenteral Nutrition (TPN) infusion is a medical process that delivers essential nutrients directly into the bloodstream through an intravenous (IV) line, bypassing the digestive system. It is used for patients who cannot eat or absorb nutrients through normal digestion due to medical conditions like severe gastrointestinal disorders, surgery, or malnutrition. TPN provides a balanced mix of proteins, carbohydrates, fats, vitamins, and minerals to support overall health and recovery. This therapy is typically administered under medical supervision to ensure safety and effectiveness.