myocardial preservation

例句：

1. 1.The patient's heart was in a critical condition, and the doctors performed myocardial preservation immediately.
   病人的心脏状况危急，医生立即进行了心肌保护。
2. 2. During surgery, the surgeon carefully preserved the myocardium to prevent damage during the operation.
   手术中，外科医生小心地保护心肌，以免在手术过程中造成损伤。
3. 3. Myocardial preservation techniques are crucial for patients with heart disease.
   心肌保护技术对于心脏病患者至关重要。