The three types of feeding tubes are nasoenteric tubes (inserted through the nose), gastrostomy tubes (placed directly into the stomach through the abdomen), and jejunostomy tubes (placed directly into the small intestine through the abdomen). The choice between them depends mainly on how long you’ll need tube feeding and how well your digestive system is working.
Nasoenteric Tubes: Short-Term Feeding Through the Nose
Nasoenteric tubes are thin, flexible tubes that enter through your nose and travel down into your digestive tract. They’re the most common starting point for tube feeding and are typically used when you’ll need nutritional support for less than four to six weeks. No surgery is required. A healthcare provider passes the tube through one nostril, down the back of your throat, and into position, often confirming placement with an X-ray.
There are three subtypes, each ending at a different point in the digestive system:
- Nasogastric (NG) tube: Ends in the stomach. This is the most common type of nasal feeding tube and the simplest to place.
- Nasoduodenal (ND) tube: Ends in the duodenum, the first section of the small intestine. This type is used when the stomach can’t handle liquid nutrition properly.
- Nasojejunal (NJ) tube: Ends farther along in the jejunum, the middle section of the small intestine. Delivering nutrition this far down the digestive tract can help patients who have trouble tolerating feedings in the stomach or duodenum.
Because nasoenteric tubes sit in the nose and throat, they can cause irritation over time. They’re also more prone to being accidentally pulled out or shifting out of position, which is one reason they’re reserved for shorter-term use.
Gastrostomy Tubes: Long-Term Stomach Access
A gastrostomy tube, commonly called a G-tube, passes through a small opening in the abdominal wall directly into the stomach. This is the go-to option when tube feeding will be needed for longer than four to six weeks. It bypasses the nose and throat entirely, making it more comfortable for extended use and less visible under clothing.
G-tubes can be placed in three ways: endoscopically (using a thin camera guided through the mouth), surgically, or radiologically (using imaging guidance through the skin). The most well-known version is the PEG tube, which stands for percutaneous endoscopic gastrostomy, placed using the endoscopic method. The procedure is relatively straightforward and usually doesn’t require general anesthesia.
People who commonly receive G-tubes include those with neurological conditions that make swallowing unsafe, head and neck cancers that interfere with eating, or any condition where the mouth and throat can’t be used for nutrition but the stomach still works normally. Once the site heals, which takes a couple of weeks, many people find G-tubes easy to manage at home.
Jejunostomy Tubes: Feeding Past the Stomach
A jejunostomy tube, or J-tube, also goes through the abdominal wall but delivers nutrition directly into the jejunum, the middle portion of the small intestine. This type is chosen when the stomach itself needs to be bypassed, whether because of severe reflux, delayed stomach emptying, previous stomach surgery, or a high risk of food entering the lungs (aspiration).
Because J-tubes skip the stomach, feedings are typically delivered more slowly and in smaller volumes. The jejunum is less forgiving than the stomach when it comes to handling large amounts of liquid at once. Patients with jejunal tubes may not tolerate water flushes larger than 150 to 200 mL, so hydration often needs to be delivered in smaller, more frequent amounts.
Complications are fairly common with J-tubes. A study of 546 patients at a single medical center found that 22% experienced some type of adverse event. The most frequent problem was tube dislodgement, occurring in 12% of patients, followed by clogging (6%), leaking around the tube site (5%), and site infections (2.8%). These rates partly reflect the narrower diameter of J-tubes compared to G-tubes, which makes them more susceptible to blockages.
There’s also a combination option called a GJ-tube, which enters the stomach and then extends a second channel into the jejunum. This allows one port for feeding into the intestine and another for draining or venting the stomach, useful for people who need both functions.
How Tube Type Is Chosen
The two biggest factors are duration and anatomy. If your digestive system works normally and you need feeding support for a few weeks (recovering from surgery, for example), a nasogastric tube is the simplest solution. If the need will last months or longer, a gastrostomy tube avoids the discomfort and complications of keeping a tube in your nose indefinitely. If your stomach can’t safely receive food, a jejunostomy tube or a combination GJ-tube routes nutrition further downstream.
Your overall health matters too. Someone at high risk of aspirating food into their lungs may benefit from a J-tube even if their stomach is otherwise functional, because delivering nutrition past the stomach reduces that risk. Someone with a temporary swallowing problem after a stroke might start with an NG tube and transition to a G-tube if recovery takes longer than expected.
Tube Materials and Maintenance
Most feeding tubes are made from either silicone or polyurethane. Silicone tubes are softer and more flexible, which makes them comfortable, but they have thicker walls that reduce the internal opening and make clogging more likely. Polyurethane tubes are stronger, allowing thinner walls and a wider internal channel at the same outer size. Both materials hold up well inside the body and resist breakdown from stomach acid, giving them a longer usable life than older rubber-based tubes.
Keeping a feeding tube clear requires regular flushing with water. The standard recommendation is at least 30 mL of water every four hours to maintain patency. Flushing before and after each feeding, and before and after giving medications through the tube, helps prevent the buildup that leads to clogs. If a tube does become blocked, warm water flushes or enzymatic solutions can sometimes clear it, but severely clogged tubes may need to be replaced.