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对缓慢型心律失常,起搏器是最有实效的治疗方法。心脏起搏器临床应用的发展过程,是从心室起搏开始的,目前国内外安装的起搏器,大多数为VVI型。VVI起搏器构造简单、可靠性高、手术方便、并发症少、价格低,能较好地降低心率过缓对生命的威胁和减轻此类患者的临床症状,是起搏技术的基础,受益面最广。其实用价值和社会效益是众所周知的。但心室起搏方式确实存在缺点,主要是不符合心脏的生理性房室收缩顺序、室内激动传播顺序,就许多有室房逆传的患者而言,对其血液动力学会产生不良影响,严重者可发生起搏综合征。生理性起搏是起搏技术发展过程中一项极为重要的进展。生理性起搏系指保持正常的房室收缩顺序,及根据机体的代谢需要而自动调节起搏频率,以保证足够的心排血量。它包括AAI、VDD、DVI、DDD和频率应
For slow arrhythmias, pacemakers are the most effective treatment. The pacemaker clinical application of the development process, is from the ventricular pacing began, at home and abroad to install pacemakers, most of the VVI type. The VVI pacemaker has the advantages of simple structure, high reliability, convenient operation, less complications, low price, better able to reduce the threat of heart rate slowing and reduce the clinical symptoms of such patients, and is the basis of pacing technology. The most widely. Its practical value and social benefits are well known. However, ventricular pacing does have shortcomings, mainly does not meet the physiological contraction of the heart atrioventricular order, the order of indoor inflammatory transmission, as many patients with retrograde ventricular dysfunction, its hemodynamics will have a negative impact, in severe cases Pacing syndrome can occur. Physiological pacing is an extremely important advance in the development of pacing technology. Physiological pacing refers to maintaining a normal sequence of atrioventricular contractions, and automatically adjusting the pacing frequency according to the body’s metabolic needs to ensure adequate cardiac output. It includes AAI, VDD, DVI, DDD and frequency should be