The fluids that are routinely administered in hospitals are glucose fluids, saline, and a mixture of glucose and saline. Glucose is a nutrient that the body needs on a daily basis, as the body’s nutrients include glucose, fat, and amino acids. Under normal circumstances it is glucose and fat that provide energy, that is, calories, and amino acids are normally used as synthetic proteins. Therefore, when a patient is not feeling well or comes to the hospital for infusion, it is usually accompanied by gastrointestinal dysfunction, which means that he or she may not be able to eat for some time, and therefore needs to be replenished with energy and must rely on glucose and fatty milk infusion. In addition, glucose can also be used to rescue patients with hypoglycemia, and can be given to raise the blood glucose level in the patient’s body when the patient’s blood glucose decreases.