Percutaneous endoscopic gastrostomy (PEG) is an endoscopic medical procedure in which a tube (PEG tube) is passed into a patient's stomach through the abdominal wall, most commonly to provide a means of feeding when oral intake is not adequate (for example, because of dysphagia or sedation). A gastrostomy tube (also called a G-tube) is a tube inserted through the abdomen that delivers nutrition directly to the stomach. It's one of the ways doctors can make sure kids with trouble eating get the fluid and calories they need to grow. A gastrostomy tube is a tube that passes through the abdominal wall into the stomach. ... A tube placed this way is called a percutaneous endoscopic gastrostomy, or PEG, tube. To place a PEG tube, the doctor advances an endoscope down the patient's throat into the stomach.