Methods:Abdominal working cardiac transplant model A: Heterotopic hearts were transplanted using end-to-side anastomosis between the donor s left atrium and the pulmonary artery.

• 方法:模型A,供心肺动脉与左心房端侧吻合,左心室血液经供心主动脉吻合口进入受者腹主动脉。