目的指导心脏双瓣膜置换术患者进行呼吸运动训练，预防肺部并发症。
AIM: to instruct the respiratory exercise in patients with heart double valve replacement, so as to prevent the occurrence of pulmonary complications.
结论呼吸运动训练是减少心脏双瓣膜置换手术患者肺部并发症的有效措施。
CONCLUSION: Respiratory exercise is an effective method for reducing the pulmonary complications of patients with heart double valve replacement.
结论开胸手术前对患者进行呼吸运动训练，能减少术后呼吸系统并发症的发生，促进患者康复。
Conclusions respiratory exercises can reduce the incidence of postoperative respiratory system complication and promote rehabilitation of patients.
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