方法：通过给予普通型和长效型钙离子拮抗剂，观察对慢性心功能不全病人的左室收缩与舒张功能的影响。

Method We observed the the effect of administering general and long-effect calcium antagonists on cardiac systolic and diastolic functions.

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目的评价经皮冠状动脉介入治疗(pci)对伴左心室收缩功能不全的冠状动脉慢性完全闭塞(CTO)患者左室重构及心功能的影响。

Objective to evaluate the effect of percutaneous coronary intervention (PCI) on left ventricular systolic function in patients with chronic total occlusion (CTO) and left ventricular dysfunction.

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