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首页> 外文期刊>Canadian Journal of Physiology and Pharmacology >Electrophysiologic changes in heart failure: focus on pacemaker channels.
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Electrophysiologic changes in heart failure: focus on pacemaker channels.

机译:心力衰竭的电生理变化:关注起搏器通道。

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Heart failure is a common clinical syndrome occurring as a result of cardiac overload, injury, and a complex interplay among genetic, neurohormonal, inflammatory, and biochemical factors. Occurrence of arrhythmias in heart failure is largely a consequence of disease-induced electrical remodeling of cardiac myocytes, a phenomenon consisting of alterations of ion channels and the ion-transport function that predispose patients to develop lethal arrhythmias. In most cases, the mechanism is the rapid onset of a ventricular tachyarrhythmia progressing to ventricular fibrillation and hemodynamic compromise. This paper highlights some of the important changes in ion channel expression and function that underlie electrical remodeling of the failing heart. Particular attention will be focused on the presence, features, and pharmacologic modulation of f channels expressed in ventricular cardiac myocytes.
机译:心力衰竭是由于心脏超负荷,损伤以及遗传,神经激素,炎症和生化因素之间复杂的相互作用而导致的常见临床综合征。心力衰竭的心律失常的发生在很大程度上是由疾病引起的心肌细胞电重构的结果,这种现象由离子通道的改变和离子转运功能组成,使患者容易发展为致命性心律失常。在大多数情况下,其机制是心室快速性心律失常的快速发作,发展为心室纤颤和血液动力学损害。本文重点介绍了离子通道表达和功能的一些重要变化,这些变化是衰竭心脏电重构的基础。特别注意将集中在心室心肌细胞中表达的f通道的存在,特征和药理学调节上。

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