The gastrojejunostomy (GJ) Tubes offer a safe and effective alternative for long-term enteral nutrition for the patients who are unable to tolerate feeding into the stomach. These devices provide direct access to both the stomach (gastric port) and the small intestine (jejunal port), allowing nutrition, hydration, and medications to be delivered directly into the gastrointestinal tract while minimizing complications such as reflux or aspiration.
What Is a Gastrojejunostomy (GJ) Tubes?
- A GJ tube is inserted through a small surgical opening in the abdomen (a stoma) into the stomach and then advanced into the jejunum. It functions as a combination of two feeding routes:
- The gastric (G) port, which opens into the stomach, is mainly used for medication delivery or decompression (to release excess air or stomach contents).
- The jejunal (J) port, which extends into the jejunum, is used for feeding and hydration, bypassing the stomach and reducing the risk of vomiting and aspiration.
- The GJ tube is held securely in place with a water-inflated balloon or internal bumper and typically includes a labeled feed head with three ports - G, J, and balloon.
Why Choose GJ Feeding?
GJ feeding is recommended when below happens:
1. A patient cannot tolerate gastric feeding due to severe reflux, delayed gastric emptying, or aspiration risk.
2. The stomach is unable to absorb or process nutrients adequately.
3. The previous gastrostomy feeding (G-tube) was unsuccessful.
4. By bypassing the stomach, the GJ tube allows nutrition to reach the intestines directly, improving comfort and reducing pulmonary complications in vulnerable patients such as children, post-surgical cases, or those with neurological disorders.
Types of GJ Tubes including:
- Standard-Length Gastrojejunostomy (GJ) Tubes – also called "danglers," these external tubes are easily accessible for hospital or home-based management.
- Low-Profile (MIC-KEY GJ) Tubes* – also known as "button" tubes, they sit close to the skin and are more discreet, suitable for long-term use and active patients.
Both types can use ENFit and Y connectors to ensure compatibility and patient safety and meet different needs.
About Placement and Care of Gastrojejunostomy (GJ) Tubes
First of all, for insertion, it can be performed surgically, endoscopically, or radiologically. If a patient already has a gastrostomy, the existing tract can often be used for Gastrojejunostomy (GJ) Tubes placement. The device typically requires hospital-based replacement every 6–18 months, depending on its type (balloon or PEG-J).
Secondly, for proper maintenance and flushing of both G and J ports are essential to prevent blockage or infection. To keep continuous feeding is usually delivered via a pump or syringe, while water flushes and medications are administered per physician guidance. Besides, for low-profile GJ require specific extension sets(straight or bend extension tube) for feeding and medication delivery.
Clinical Benefits
Reduces risk of aspiration pneumonia by bypassing the stomach.
Improves nutrient absorption in patients with impaired gastric motility.
Enables dual access for decompression and feeding.
Supports home-based nutrition therapy with minimal discomfort.
