Where is a jejunostomy tube (J-Tube) surgically placed?

A jejunostomy tube, commonly referred to as a J-tube, is surgically placed directly into the jejunum, which is the middle portion of the small intestine. This placement is specifically intended for nutritional support when oral intake is not sufficient or is impossible due to various medical conditions.

The jejunum is the second part of the small intestine, following the duodenum and preceding the ileum. The purpose of the J-tube is to deliver nutrients, fluids, and medications directly into the jejunum, allowing for absorption into the body without the need for the food to pass through the stomach. This can be particularly beneficial in patients who have problems with gastric emptying or who may require long-term enteral feeding.

Understanding the anatomy of the gastrointestinal tract is crucial for recognizing why the jejunum is the site for a J-tube placement, as it facilitates better nutrient absorption under certain medical conditions compared to other areas of the digestive system.