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.
Feb 1, '06 by bobnurse. obtaining routine blood draws from a midline catheter is contraindicated. The tip of a midline lies in the upper deltoid or axillary vein. The only acceptable tip location for a picc line is the lower segement of the superior vena cava. So to answer your question, you should not obtain blood specimins from a midline.