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.
A midline catheter provides venous access in a large peripheral vein but does not enter the central venous system. Midlines are usually inserted into a vein situated in the antecubital fossa area of the arm and the tip extends into the vein of the upper arm up to 20cm. Midlines should not be extended past the axilla.