What is the appropriate order for a TPN solution of 50 ml/hr at 3/4 strength?

To determine the appropriate order for a TPN (Total Parenteral Nutrition) solution of 50 ml/hr at 3/4 strength, it is important to consider the total volume required in a 24-hour period and how that relates to the strength of the solution.

When a TPN is prescribed at 3/4 strength, it means the provider intends for the patient to receive a certain amount of nutrition (the formula) diluted with water to ensure the solution is at a lower concentration than a full-strength formula.

For a flow rate of 50 ml/hr, the total volume for 24 hours would be 1200 ml (50 ml/hr x 24 hrs). At 3/4 strength, this means that the total volume must consist of 3 parts formula to 1 part water, which can be calculated.

If you have a total of 1200 ml at 3/4 strength, the actual formula volume will be 900 ml (which represents 3 parts) and the water volume will be 300 ml (which represents 1 part). Thus, the correct combination to achieve 50 ml/hr at 3/4 strength is indeed 900 ml of the formula mixed with 300 ml of