充血性心力衰竭(CHF)是小儿心血管疾病中常见的一种严重综合征,不仅危害小儿健康,也是导致死亡的常见原因。因此,防治CHF是当前主要的课题之一。 近年来,β—受体阻滞剂(BB)治疗心力衰竭的研究越来越多,并取得了令人瞩目的良好效果。BB主要通过以下机制改善心衰患者的功能:①降低心率,减少能量消耗,改善心肌舒 Congestive heart failure (CHF) is a common and serious syndrome in pediatric cardiovascular disease, which not only affects the health of children, but also is a common cause of death. Therefore, the prevention and treatment of CHF is currently one of the major topics. In recent years, β-blockers (BB) in the treatment of heart failure more and more studies, and achieved remarkable results. BB mainly through the following mechanisms to improve the function of patients with heart failure: ① reduce heart rate, reduce energy consumption and improve myocardial Shu