Final answer:
A midline catheter should not be used for home parenteral nutrition because it is a peripheral device that does not reach the central veins necessary for HPN, unlike the Hickman catheter, PICC line, and implanted port which are suitable for this use.
Step-by-step explanation:
Regarding vascular access devices (VADs) used for home parenteral nutrition (HPN), the one that is generally not recommended is a midline catheter. Midline catheters are peripheral devices that do not reach the large central veins, thus are not suitable for solutions with high osmolarity typically used in HPN due to the risk for vein irritation and damage. On the other hand, a Hickman catheter, a PICC line, and an implanted port are all types of central venous catheters that access the large central veins and can be used for HPN.
VADs are essential in the administration of long-term treatments but do have associated risks including catheter-related bloodstream infections, which according to the World Health Organization, can lead to severe outcomes with thousands of infections and deaths occurring annually in the US. Among the VADs used for HPN, the Hickman catheter, PICC, and implanted port provide the necessary central venous access capable of handling the requirements of nutrient solutions administered in HPN.