cardiac base

例句：

1. 1. The patient's heart rate waselevated during the procedure.
   患者在手术过程中心率升高。
2. 2. The doctor performed an emergency surgery onthe patient's cardiac base.
   医生对患者的心脏基底部进行了紧急手术。
3. 3. Thestudy found that exercise can improve blood flowto the cardiac base.
   研究发现，运动可以改善心脏基部的血流。