Effect of discharge current on cell voltage and power. When current is drawn from a cell, the cell volta ge falls due to polarization. The higher the current, the greater the voltage drop.
Topics | Critical Care | How is total parenteral nutrition (TPN) given? Total parenteral nutrition (TPN) is given through a vascular access device such as a Peripheral Intravenous line, Midline or most preferably a Central Line. The central line is the most common access for TPN administration.
Nutrients can be provided to a patient via IV in TPN, or total parenteral nutrition. TPN may be necessary for a short time after surgery or illness impacts the digestive system. A device called an infusion pump is used to control the timing and amount of nutrition administered.