Objective: To investigate whether cardiac rehabilitation exercise can improve the heart function of patients with chronic cardiac insufficiency and evaluate its safety.
目的：探讨心脏康复治疗对心功能不全患者心功能改善的作用，并进行安全性评价。
Objective: To investigate whether cardiac rehabilitation exercise can improve the heart function of patients with chronic cardiac insufficiency and evaluate its safety.
目的：探讨心脏康复治疗对心功能不全患者心功能改善的作用，并进行安全性评价。
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