Enteral and Parenteral Nutrition
The technique of feeding that uses the gastrointestinal (GI) tract to deliver a part or all of a person's caloric requirements are called Enteral Nutrition. It includes a distinct liquid diet in combination of protein, carbohydrates (sugar), fats, vitamins and minerals or small intestine.
Intravenous administration of nutrition consisting carbohydrate, fat, minerals and electrolytes, vitamins and other trace elements is referred as parenteral nutrition. When the tube feeding and mouth feeding methods fails to work parenteral nutrition is used.