第2~6肋间神经前皮支（ACIN）在胸骨旁穿出点位置恒定。
The position of T2-6 anterior cutaneous branch of intercostals nerve (ACIN) perforating were invariant.
CAB多采用胸骨正中切口，左前外侧切口适用于左前降支单支病变。
The median sternotomy are usually used in OPCAB, left anterior lateral incision is only suitable for left anterior descending coronary artery disease.
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