Explain Total Parenteral Nutrition OPN)

It is a method of providing, complete nutritional support in which  the gastrointestinal (GI) tract is bypassed by introducing assimilable nutrients into a central vein. This is done  in cases where a patient's nutritional need is great and assisted feeding  is  required for a longer time. You might wonder why specifically  a central vein  (mostly superior vena cava)  is used. Well,  this  is because it  is  the central vein which can  tolerate ahyperosmolar solution and hence nutritional  support can  be provided in a form  that will meet all nutritional needs. Total Parenteral Nutrition  (TPN)  is a special surgical procedure in which special nutrient solutions are administered by a nutrition support team which includes the physician, dietitian, pharmacist and nurse. The patient needs special care and support.