Table 2.

Classifications of vascular injuries during laparoscopic cholecystectomy

Ref.	Definition of vascular injury
Schäfer et al[29], 2000	Major injury: Injury to any of the following vessels: Aorta, vena cava, portal vein, hepatic artery and splenic artery, iliac vessels, mesenteric, omental and renal vessels; the vascular injury is classified in: Intra-operative; local haemorrhage within the abdominal cavity, retroperitoneum or abdominal wall; post-operative: Bleeding occurring within 24 h after surgery
Bektas et al[30], 2007	Vascular involvement in different biliary injuries grades (types C and D): Type C tangential injury of the common bile duct: with or without vascular lesion; Type D complete transection of the common bile duct: with or without vascular lesion
Kaushik[31], 2010	Major injury: Any bleeding involving cystic artery, right hepatic artery, portal vein, superior mesenteric vein, suprahepatic veins, inferior vena cava, aorta that requires conversion to open surgery to control/repair; additional surgical procedures; need for blood transfusions
Fingerhut et al[32], 2013	Vasculo-biliary involvement by reporting the type of injured vessel
Our study	Major vascular injury: Any bleeding involving right hepatic artery, portal vein, suprahepatic veins, inferior vena cava that always requires conversion to open surgery for control/repair; need for blood transfusions; associated biliary injury; need for transfer to tertiary center