What is gj tube

Last updated: April 1, 2026

Quick Answer: A GJ tube (gastrojejunal tube) is a medical feeding tube inserted through the stomach into the jejunum (small intestine) to deliver nutrition directly when normal eating is impossible.

Key Facts

What is a GJ Tube?

A gastrojejunal (GJ) tube is a dual-function feeding tube that extends from the nose or surgical opening through the stomach into the jejunum, the first part of the small intestine. This configuration allows simultaneous gastric decompression and jejunal feeding, making it valuable for patients with complex digestive issues.

How GJ Tubes Work

The tube typically has two lumens (channels): one opening in the stomach for drainage and medication, and another opening in the jejunum for nutrient delivery. This dual design prevents food and gastric fluids from accumulating in the stomach while providing nutritional support directly to the small intestine where absorption occurs more reliably.

Insertion Methods

Medical professionals use two primary insertion techniques:

Both methods require specialized medical training and sterile conditions. Patients may receive sedation or general anesthesia depending on the approach.

Medical Indications

GJ tubes are recommended for patients with swallowing disorders (dysphagia), gastroparesis, severe gastroesophageal reflux disease (GERD), pancreatitis, or recurrent aspiration pneumonia. They're also used post-operatively and in patients with neurological conditions affecting normal digestion.

Maintenance and Care

Proper tube care includes regular flushing with water, careful administration of medications, monitoring for signs of infection, and regular assessment by healthcare providers. Patients and caregivers must understand feeding protocols, tube site care, and when to seek medical help for complications.

Related Questions

What is the difference between a GJ tube and a G tube?

A G tube delivers nutrition directly to the stomach only, while a GJ tube has two ports allowing gastric drainage and jejunal feeding simultaneously, suitable for patients with stomach dysfunction.

How long can someone stay on a GJ tube?

GJ tubes can remain in place long-term, from weeks to years depending on the patient's condition. Some patients transition to normal eating over time, while others require permanent tube feeding.

Can you eat normally with a GJ tube?

Patients with GJ tubes typically cannot eat normally and should not attempt oral intake without medical approval, as it may cause complications related to their underlying condition.

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Sources

  1. Wikipedia - Feeding Tube CC-BY-SA-4.0
  2. National Cancer Institute - Nutrition Support Public Domain