Parentral nutrition is a method where by nutrients may be introduced into the system via the enteral route. It is also referee to as intravenous hyperalimenation (IVH). By passing the normal gastro intestinal system, this route provides a nitrogen source for those unable to ingest protein, carbohydrates (adequate caloric), or fats. A balanced blend of nutrients, including vitamins and minerals, can be administered peripherally, using isotonic concentrations of glucose, crystalline aminoacids, and fats; or because the solution may be irritating to the veins, nutrients can be administered through a central, high-flow vein. Hypertonic glucose, along with crystalline aminoacids, fats, electrolytes, vitamins and trace elements is given through central vein access.
The technique requires especial handling and management of the client and the most expensive method of feeding.
It should be used only if the intestines do not work adequately, if the client has an obstruction or has fistula, if the bowel rest is required.
Implantable vascular access devices are placed under the skin in a subcutaneous pocket and a surgically tunneled silicone catheter is place in the cephalic or external jugular vein and threaded to the superior vana cava.
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