Gastrojejunosotmy (GJ) tube: A GJ tube is placed through the skin into the stomach (gastrostomy) with an extension that goes into the small intestine (jejunostomy). The gastrostomy port is used for ...

Patients with jejunostomy after extensive small-bowel resection have major problems with water, sodium and magnesium depletion. They rapidly become dehydrated if appropriate treatment is not given.