Trans-gastric jejunal tube (G-J tube) factsheet
Introduction
Children who vomit often or have severe reflux are at risk of breathing their feeds into their lungs.
To help prevent this, some children are given a special feeding device called a trans-gastric jejunal device, or G-J tube. The tube helps children get nutrition safely by delivering feeds directly to the small intestine.
About the device
A G-J tube is a small button or tube with two feeding ports:
- one goes into the stomach - on the side of the button
- one goes into the small intestine - on the top of the button.
Some also have a port for inflating a balloon.
The G-J tube is inserted through the same opening as the gastrostomy button. This procedure is done in the radiology department at the hospital.
A doctor uses an X-ray and a guide wire to place the tube correctly.
Formula feeds are given slowly through the device using a pump, usually over 16 to 24 hours each day. Your child’s dietitian will explain their feeding plan to you and answer any questions.
Care of the device
To make sure the G-J tube works properly:
- do not turn or rotate it, as this can move it out of place
- flush the tube with 10ml of water at least every four hours to help prevent blockages
- if the tube gets blocked and can’t be flushed, it must be removed and replaced in hospital.
When to seek help
Speak to your child’s treatment team or go to your nearest emergency department as soon as possible if:
- your child vomits their formula
- the tube is accidentally turned
- the button comes out or moves
- your child has pain, discomfort, gagging, leaking, or a swollen stomach.
