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A 32-year-old member asked:

What's the differencence between a tpn, gtube, & a peg?

5 doctor answers17 doctors weighed in
Dr. Ester Kwok
Internal Medicine 33 years experience
Nutrition: Tpn=total parenteral nutrition. It's a mixture of vitamins, fats and carbohydrates given in a liquid form intravenously through a large vein of the body to people who are unable to digest food through the stomach. Both a peg and a gtube administer a liquid form of food directly to the stomach, in those who aren't able to swallow. A peg is placed by a GI doc while a gtube is placed by a surgeon.
Dr. David Miller
Dr. David Milleranswered
Family Medicine 11 years experience
Nutrition: Tpn = total parenteral nutrition, which is IV feeding. This is used to provide feeding while bypassing the digestive system. A g-tube and a peg tube are both tubes inserted directly into the stomach through the abdominal wall to introduce nutrients directly into the stomach.
Dr. Sahba Ferdowsi
General Practice 19 years experience
Good answer. Wishing you'all the best.
Feb 13, 2012
Dr. Patricia Raymond
Gastroenterology 36 years experience
Lots: Tpn, or total parenteral nutrition, is given through a vein. It is considered risky if your gut is working (infections and wacky electrolytes can result). A peg (or percutaneous endoscopic gastrostomy, aka g-tube) is where we place a flexible rubber tube about the caliber of a drinking straw straight through your skin in your belly and into your stomach. This allows us to feed you into your gut.
Dr. John Edmison
Gastroenterology 20 years experience
Ways to feed body : Tpn stands for total parenteral nutrition. All nutrition is obtained from a bag of liquid nutrients and infused through an iv. A peg is a tube placed into the stomach from outside the abdomen, which is used to feed the stomach with liquid nutrition. A g tube is similar to a peg tube, but it is surgically placed while a peg is endoscopically placed.
Dr. David Miller
Dr. David Miller commented
Family Medicine 11 years experience
You're welcome!
Mar 16, 2012
Dr. Michael Taylor
A Verified Doctoranswered
23 years experience
Different things: Tpn=total parenteral nutrition; nutrition is given intravenously, usually through a central venous access device (e.g. Central line or picc). A g-tube (or gastrostomy tube) is a flexible tube that goes through the abdominal wall directly into the stomach. A peg is a type of g-tube that is placed by an endoscopist (surgeon or GI doctor); a surgeon can also perform an operation to place a g-tube.

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