手术中切口和套管的位置、大小和数量取决于每个病人的具体情况。
The placement, number and size of the incisions and cannula portals all depend on factors individualized for each patient.
结论：①旁正中切口不会影响面动脉；
Conclusions:Facial artery could not be injured on the paramidline incision;
正中切口采取常规插管方法建立CPB。
Median sternotomy group used regular cannulation to establish CPB.
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