Conclusion Applying low-dose milrinone can improve hemodynamics and myocardial contractile function by decreasing SVR and PVR and increasing cardiac output.

• 结论应用小剂量米力农可明显改善重症心脏瓣膜病患者手术后的心脏收缩功能，降低心脏前后负荷，增加心排量。