American Association of Critical-Care Nurses (AACN) Certification Practice Test

If the anticipated time frame for not using the gut is less than 2 weeks, which method of nutritional support should be used?

1. Central vein nutrition

2. Peripheral vein (PPN)

3. Enteral feeding

4. Tube feeding

The correct answer is: Peripheral vein (PPN)

When the anticipated time frame for not using the gut is less than 2 weeks, peripheral vein nutrition is often considered appropriate because it allows for providing necessary nutrients while the gastrointestinal tract is not being utilized. Peripheral parenteral nutrition (PPN) can be administered via a peripheral intravenous line, which is less invasive than central venous access and is suitable for short-term nutritional support. PPN is typically used for patients who do not require complete bowel rest but still need additional caloric intake or if they cannot consume adequate nutrition orally. It is important to note that for anticipated periods longer than 2 weeks, central vein nutrition might be preferred due to its ability to provide a more concentrated form of nutrition. In this context of short-term nutritional support, enteral feeding options such as tube feeding could also be used. However, the specific guidance suggests using a method that is less intensive and more suited for brief durations, which aligns with the benefits PPN offers for limited time frames. Therefore, in cases where the gut can be utilized for feeding over an anticipated short period, peripheral vein nutrition is the method of choice.