Gastroduodenal Artery

arteria gastroduodenalis

The gastroduodenal artery passes behind the first part of the duodenum — posterior duodenal ulcers can erode into this vessel, producing the massive haematemesis of a bleeding peptic ulcer. Endoscopic injection and clipping address the vessel in ulcer haemorrhage; surgical ligation through a duodenotomy if endoscopic treatment fails. In Whipple's pancreaticoduodenectomy, the GDA is divided at its hepatic artery origin.

Region: Abdomen

Anatomical Data

Origin, Insertion & Supply

Origin	Common hepatic artery (before it becomes the proper hepatic artery)

Clinical Relevance

Clinical Notes

Posterior duodenal ulcer erosion of the GDA produces life-threatening upper GI bleeding — the vessel lies directly posterior to the duodenum. Endoscopic haemostasis (injection of adrenaline and haemostatic clips) controls bleeding in 80-90%; surgery for refractory cases. In Whipple's procedure, the GDA is divided to allow dissection of the portal vein-superior mesenteric vein confluence.

Pathology

Common Injuries & Conditions

GDA Erosion in Peptic Ulcer

Posterior duodenal ulcer erosion of the gastroduodenal artery producing massive haematemesis managed with endoscopic haemostasis or surgical ligation.