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.
Why might I need a PICC or midline catheter? You need long-term IV therapy: A catheter has one or more lumens (openings). Caregivers can give you medicine, take blood, or do other tests through these openings. PICC and midline catheters can stay in place longer than some other types of IV catheters. Caregivers can give you medicine such as IV antibiotics or chemotherapy for several weeks. You can also get TPN (liquid food) and IV liquids through a PICC or midline catheter.