Perioperative peripheral parenteral nutrition to support major gastrointestinal surgery: Expert opinion on treating the right patients at the right time.

Background & Aims: Patients undergoing major gastrointestinal surgery may be in particular need of nutritional therapy due to potential pre-existing disease-related malnutrition and the impact of surgical procedures. Peripheral parenteral nutrition (PPN), delivered via a peripheral catheter, is aligned with the Enhanced Recovery After Surgery (ERAS) concept of minimally invasive interventions where possible. However, uncertainties regarding perioperative PPN for patients undergoing major gastrointestinal surgery arise, in part, due to lack of clinical guidelines.