原位肝移植术是将病变的肝脏从原解剖部位全部切除，然后原位植入同种异体的肝脏，使患者重新得到新的肝脏，同时获得相应正常的肝功能。这种手术及麻醉的复杂性与特殊性超过其它器官移植，围术期血流动力学、生理生化变化大，麻醉处理难度高而复杂，特别是在无肝期与新肝期的 Orthotopic liver transplantation is to remove the diseased liver from the original anatomical site and then implant the allogeneic liver in situ, so that the patient can regain a new liver and obtain the corresponding normal liver function. The complexity and specificity of this surgery and anesthesia are higher than those of other organs. Hemodynamics, physiological and biochemical changes during the perioperative period are large, and the anesthetic treatment is difficult and complex, especially in the anhepatic and neonatal phases.