Because before doctors will perform surgery. The patient must be anesthetized in order to not have to endure the
pain during the surgery itself. And hence If a patient drink
and food before. It may be that patients with symptoms of choking debris. Or gastric juices in
the stomach flow back up into the lungs. The violence is much less varies
depending on the type and amount of food choking. For more severe cases can cause
lack of oxygen. Or the patient's respiratory system problems. You should not drink or
eat before the surgery as the best.