Objective: To study changes of cardiac function during metoprolol therapy in patients with congestive heart failure(CHF).
Objective: To study changes of cardiac function during metoprolol therapy in patients with congestive heart failure(CHF).
目的:观察美托洛尔对应用血管紧张素转化酶抑制剂等基础治疗的充血性心力衰竭患者心功能影响,探讨其治疗充血性心力衰竭的机制。