In cases where a patient's digestive system works as normal food, the digestive system is the best choice, because the safe, economical, and less complications of intravenous feeding.
If the gastrointestinal tract of the patient is functioning normally. Feeding the digestive tract are the most economical and safe because of complications than intravenous feeding.
In the case of the digestive tract of patients with work as usual. Enteral nutrition is best because the safe, economical and complications than parenteral nutrition.