After your nutritional needs are determined, a specialist will prepare the TPN formula. A trained nurse and technologist will use local anesthesia to numb the area of skin where the central intravenous line will enter your body. After the area is numb and sterilized, they will insert the intravenous line into your vein and have the line carefully tunneled to the largest vein of your body.
The other end of the intravenous line will attach to an IV bag for TPN administration. It can take anywhere from 10 to 24 hours for you to receive your nutrition through TPN infusion. You can choose to take the treatment at night when you are comfortably sleeping.