No, a PEG tube is NOT the same as an NJ tube
A PEG (percutaneous endoscopic gastrostomy) tube and an NJ (nasojejunal) tube are completely different enteral access devices that differ in placement route, insertion site, anatomical endpoint, duration of use, and clinical indications 1.
Key Differences
Route and Placement
- PEG tube: Placed percutaneously through the abdominal wall directly into the stomach via endoscopy
- NJ tube: Inserted through the nose and advanced through the esophagus, stomach, and into the jejunum (small bowel)
Duration of Use
Anatomical Endpoint
- PEG: Terminates in the stomach, allowing for gastric feeding
- NJ: Terminates in the jejunum (small bowel), bypassing the stomach entirely
Clinical Advantages
The guideline clearly distinguishes these devices based on duration needs. Although tube dislodgement rate is lower and adequacy and duration of enteral feeding is greater with percutaneous devices (like PEG) compared with nasoenteral tubes (like NJ), the added risk of percutaneous placement justifies the selection of nasoenteral feeding tubes for short-term use 1.
When Small Bowel Access is Needed
If jejunal (small bowel) feeding is required long-term, you would use:
- PEG-J: A PEG tube with a jejunal extension tube passed through it
- DPEJ: Direct percutaneous endoscopic jejunostomy
- Not an NJ tube (which is temporary)
Important Caveat
Small bowel feeding through any jejunal device (NJ, PEG-J, or DPEJ) requires reduced and cycled feeding rates to prevent dumping symptoms from hypertonic formulas entering the small bowel directly 1. This is a critical difference from gastric feeding through a PEG, which allows more physiologic intermittent bolus or continuous feedings.