2. Use antibiotics 1-2 days before transplantation: make comprehensive preoperative preparations according to the requirements of heart transplantation.

Protection of donor lung: perfusion with hypothermic lung A.

Donor cardiopulmonary resection: ① careful protection of cardiopulmonary lavage; ② Gently touch and squeeze the lungs to prevent lung injury; ③ After separation, mediastinum should be close to esophagus and descending aorta, and the blood vessels and lymphatic vessels around trachea should be ligated to stop bleeding completely; (4) There is no separation before and after carina, and maintaining the blood supply of coronary collateral is beneficial to the healing of tracheal anastomosis; ⑤ Avoid capacity overload and prevent pulmonary edema.

Surgical methods: single lung transplantation, double lung transplantation and combined heart-lung transplantation;

Selection of single lung transplantation side: the side with severe multiple lesions or poor blood perfusion and the side with severe emphysema. If the degree of bilateral lesions is similar, the right side should be selected as the transplantation side. Patients with pulmonary hypertension should be transplanted with one lung, and the right side is suitable.

Bilateral lung transplantation methods: bilateral lung transplantation and bilateral lung transplantation on a regular basis.

Combined heart-lung transplantation: cut the heart first, then cut the lung to protect the bilateral septal nerve, vagus nerve and recurrent laryngeal nerve.