Four patients died in the perioperative period, due to intracerebral bleeding, adult respiratory distress syndrome, acute renal failure and hepatic artery thrombus, respectively.

• 围手术期死亡4例,直接死亡原因脑出血1例、急性呼吸窘迫综合征1例、急性肾功能衰竭1例、肝动脉血栓1例。