OIS grade | Description of injuries |
---|---|
I | Non-named superior mesenteric artery and vein, and their branches, phrenic artery/vein, lumbar artery/vein, gonadal artery/vein, ovarian artery/vein |
II | Right, left, common hepatic artery, splenic artery/vein, right or left gastric arteries, gastroduodenal artery, inferior mesenteric artery/vein, primary branches of mesenteric artery/vein |
III | Superior mesenteric vein trunk, renal artery/vein, iliac artery/vein, hypogastric artery/vein, vena cava, infrarenal |
IV | Superior mesenteric artery trunk, celiac axis proper, vena cava suprarenal and infrahepatic, aorta, infrarenal. |
V | Portal vein, extra-parenchymal hepatic vein, vena cava retrohepatic or suprahepatic, aorta suprarenal, subdiaphragmatic |