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.
Midline catheters are peripheral venous access devices that vary in length between 7.5 â 20 cm. Midlines are usually placed in the upper arm vein such as the basilic, brachial, or cephalic using an ultrasound for guidance. The tip of the midline catheter ends below the level of the axillary line.