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.
全组行二尖瓣成形术2例，二尖瓣置换术9例，主动脉瓣置换术3例，二尖瓣、主动脉瓣双瓣膜置换术10例；
Mitral valvoplasty in 2 patients and mitral valve replacement in 9 and aortic valve replacement in 3 and double valve replacement in 10 were performed.
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