Final answer:
Air embolism during parenteral nutrition may result from a contaminated solution, improper tubing connection, or air entering the IV line.
Step-by-step explanation:
The possible causes of air embolism as a parenteral nutrition (PN) complication are related to issues with the administration of the PN solution. Specifically, contaminated PN solution, improper tubing connection, and air entering the IV line are potential causes. These can lead to air entering the circulatory system and causing an embolism, which is a blockage in a blood vessel due to air that can be very dangerous.When there is a break in the tubing or improper connection, air can enter the IV line and travel to the bloodstream, causing an air embolism. Additionally, if the PN solution is contaminated with air, it can also lead to an air embolism.