Final answer:
To decrease venous portal pressure in the lower esophageal veins, it is most beneficial to join the portal vein to the splenic vein.
Step-by-step explanation:
In order to decrease the venous portal pressure in the lower esophageal veins, it is most beneficial to join the portal vein to the Splenic vein.
The hepatic portal vein is formed by the confluence of the superior mesenteric vein and splenic vein. The superior mesenteric vein drains blood from the small intestine, two-thirds of the large intestine, and the stomach. The splenic vein is formed from branches from the spleen, pancreas, and portions of the stomach and inferior mesenteric vein.
Joining the portal vein to the splenic vein would redirect blood flow, decreasing the pressure in the lower esophageal veins and potentially alleviating esophageal bleeding.