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自八十年代以来,心血管疾病的治疗愈来愈重视提高患者的生活质量。在心脏起搏领域的反映之一,即是从简单维持患者生命与控制症状的简单的心室按需起搏(VVI),进展到以旨在提高患者运动耐量与生活质量的各种生理性起搏。生理性起搏系指能保持心脏正常电激动顺序和房室机械收缩同步性,并能随机体代谢的需要而自动调节频率的起搏方式。众所周知,心脏具有精细而协调的电和机械收缩功能。具体表现在:①房室收缩顺序的同步性;②频率的可变性,即心搏频率随生理代谢的需求而增减。各种需起搏治疗的心脏病患者突出表现在上述两种功能的丧失,而VVI
Since the 1980s, the treatment of cardiovascular diseases has become more and more important to improve the quality of life of patients. One of the reflections in the field of cardiac pacing is the progression from simple ventricular on-demand pacing (VVI) that simply maintains the symptoms of patient life and control to various physiological functions aimed at improving patient exercise tolerance and quality of life Stroke Physiological pacing refers to the pacing mode that can automatically adjust the frequency according to the need of keeping the normal electrical activation sequence of the heart and atrioventricular tachycardia systolic. It is well-known that the heart has a fine and coordinated electrical and mechanical contractile function. Specifically manifested in: ① synchronization of atrioventricular order; ② frequency variability, that is, asymptomatic heart rate with the demand for physiological changes. A variety of cardiac patients requiring pacing therapy are highlighted by the loss of both of these functions, whereas VVI