[Perioperative risk factors of bleeding in extensive liver resections].

Technical equipment for mobilization and dissection of hepatic parenchyma has fundamentally changed for the period 2013-2019. This processes reduced blood loss by more 50% and consumption of donor blood components (red blood cells by 2.8 times, FFP by 1.8 times). Compression of hepatoduodenal ligament (Pringle maneuver) and tumor type did not affect intraoperative blood loss. Neoplasms over 10 cm increased blood loss. An increase in the number of resected segments by 2 times contributed to increase of blood loss by 2.7 times. Body mass index >25 kg/m2 was also associated with higher blood loss.