G/GJ tubes: How to use a feeding extension set for a low-profile balloon G tube

What are feeding tubes?

Gastrostomy tubes (G tubes) and gastrojejunostomy tubes (GJ tubes) are feeding devices. A G tube gives liquid nutrition, medication and other fluids directly into the stomach. A GJ tube gives liquid nutrition, medication and other fluids directly into the small intestine (the jejunum). Both G tubes and GJ tubes are placed through a small opening in the stomach. This opening is called a "stoma". The tunnel from the outside of the body to the stomach is called the "tract".

The feeding extension set

The feeding port for a low-profile balloon G tube is where your child’s feeds will enter the tube and then go into their stomach. The feeding port has a one-way valve to prevent stomach contents, feeds, water, and medications from flowing back out of the tube. To open this one-way valve, and give feeds and medications, you must use a feeding extension set. Each brand of a low-profile balloon G tube has their own extension set. You will receive one in the box with a newly purchased low-profile balloon G tube. Replacement extension sets are purchased separately when needed.

Extension set detached from tube

Extension set attached to tube

Connecting the extension set to the tube

1. Open the plastic cover on the feeding tube.
2. Make sure the clamp on the extension set is closed.
3. Match the line on the extension to the line on the tube and push the extension into the valve.
4. Holding the tube in place, turn the extension clockwise until you feel the extension lock into place. There is an arrow on the extension to show you which direction to turn it.
5. Attach your feeds, fluids, and medications to the appropriate port at the end and open the clamp.
6. When you have finished using the extension, flush it and remove it from the tube.

Removing the extension from the tube

1. Clamp the extension.
2. Holding the tube in place, turn the extension counter clockwise (opposite to the arrow on the extension).
3. Match the line on the extension to the line on the tube and remove the extension.
4. Close the plastic cover on the feeding tube.

The extension set should be changed once every month, or if you notice the plastic is becoming stiff or there is formula, food or medications built up inside. It is important to flush the extension set with water between each use and clean it with soap and water once daily. Remove the extension set from the tube when it is not in use to prevent pulling.