Parenteral nutrition by peripheral vein, portal vein or central venous catheter?

Different venous accesses used for parenteral nutrition are described. The most important complications and possibilities for prevention are discussed according to both literature and personal experience. As a result, peripheral venous access is recommended for short‐term parenteral nutrition (up to 8 days), whereas central venous access should be used to deliver high caloric loads during extended periods of time. Portal venous access does not appear to have a place in parenteral nutrition to date.