A simple double-lumen gastrojejunostomy tube has been shown to have the following advantages: relief of gastric atony while allowing administration of fluids beyond the ligament of Treitz; protection of upper-gastrointestinal tract suture lines; and facilitation of intestinal perfusion and absorption studies such as are often carried out with more cumbersome, hastily rigged, double-lumen tubes.
Tompkins RK, Kraft AR, Zollinger RM. Double-Lumen Gastrojejunostomy Tube for Simplified Postoperative Management. Arch Surg. 1972;105(1):121-122. doi:10.1001/archsurg.1972.04180070119026