What solution should be infused until the next container of TPN solution is available?

The most appropriate solution to be infused until the next container of Total Parenteral Nutrition (TPN) solution is available is dextrose 10% in water. This option provides a source of carbohydrates that can help maintain blood glucose levels, which is crucial for patients on TPN who are receiving their nutrients intravenously.

Given that TPN solutions contain a significant amount of carbohydrates, particularly in the form of dextrose, switching to a 10% dextrose solution allows for continued caloric intake and helps prevent hypoglycemia. It is also isotonic, which makes it suitable for short-term intravenous use, while maintaining the patient's hydration and necessary glucose levels until the TPN solution can be resumed.

In contrast, dextrose 5% in water, while it can provide some calories, may not deliver enough carbohydrates compared to the patient's needs as provided by TPN. Sodium chloride 0.9% and normal saline primarily provide fluid and electrolytes without any caloric content, which is not ideal for supporting the patient's metabolic needs in the interim.