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传统的生理性心脏起搏概念,指恢复正常的房室顺序激动收缩和根据机体的代谢需求,自动调节起搏次数以保证足够的氧供应。随着各种单、双腔、多功能程控生理性心脏起搏器在临床应用的日益增多,及各种生理起搏器血流动力学效应比较研究的不断深入,正常心室激动顺序、在维持心功能处于最适状态的意义,也逐渐被人们所认识,但未引起足够的重视。现就正常心室激动顺序在生理性心脏起搏中的重要性作如下综述。 1心室起搏改变正常心室激动顺序正常室上性激动经快速而分布广泛的希-浦氏纤维网,几乎同步地激动室间隔、左右心室,心电图上表现为持续时间约0.06～0.1
The traditional concept of physiological cardiac pacing refers to the normal recovery of normal atrioventricular contraction and according to the body’s metabolic needs, automatically adjust the number of pacing in order to ensure adequate oxygen supply. With a variety of single, dual chamber, multi-function program-controlled physiological pacemakers in the clinical application of increasing, and a variety of physiological pacemaker hemodynamic effects of more in-depth study, normal ventricular activation sequence, Heart function in the most appropriate state of significance, but also gradually been recognized, but did not attract enough attention. The following is a summary of the importance of normal ventricular activation in physiologic cardiac pacing. 1 Ventricular pacing changes the normal ventricular activation sequence Normal supraventricular activation by rapid and widely distributed Greek - Pu’s fiber network, almost simultaneously excited ventricular septum, left and right ventricular, ECG showed a duration of about 0.06 ~ 0.1