What are the advantages and disadvantages of TPN?

Total Parenteral Nutrition (TPN) provides essential nutrients directly into the bloodstream, which is beneficial for patients unable to consume food orally or absorb nutrients through the digestive tract. Advantages include ensuring nutritional needs are met, promoting healing, and preventing malnutrition in critical situations. However, disadvantages include risks of infection from catheter use, potential for metabolic complications like hyperglycemia, and the high cost and complexity of administration. Additionally, long-term TPN can lead to liver dysfunction and other complications if not carefully managed.