摘要
目的:分析冠心病患者室性早搏24h分布与心率变化的关系,并与非器质性心脏病的室性早搏患者进行对比,分析冠心病患者室性早搏的特点及发生机制。方法:观察经冠状动脉造影等检查证实的冠心病患者36例,非冠心病患者33例。根据动态心电图检查结果,做单位小时平均心率和室性早搏发生百分率(或千分率)24h时间变化曲线,观察两曲线变化情况,并分为I型:室性早搏发生集中出现在第一个平均心率峰值之前,即在夜间0:00至8:00之间;型:将室性早搏发生百分率(或千分率)变化曲线随平均心率变化曲线变化而变化且室性早搏发生集中在第一个平均心率峰值同时或其后;型:将室性早搏发生百分率(或千分率)变化曲线和平均心率变化曲线无明显关系,室性早搏发生无明显集中趋势。观察冠心病患者与非器质性心脏病患者的室性早搏24h分布与心率变化的关系,即上述分型的差异。结果:非器质性心脏病患者多为型,即两曲线多呈一致且室性早搏发生率峰值在第一个平均心率峰值出现的同时或其后;冠心病患者多为I型或型,两曲线多呈相反或无关,室性早搏发生率峰值在第一个平均心率峰值之前(约夜间1:00至7:00之间),经χ2检验,P<0.01。结论:冠心病患者室性早搏与非器质性心脏病患者的室性早搏发生不同,可能与交感神经兴奋减低、迷走神经张力较高有关。
Objective To study the regulation of ventricular premature beats(VPEs) changes in a day between the patients With coronary (CHD) and Without heart disease(NHD).Methods Thirty-six CHD patients and thirty-three patients NHD patients were measured.By taking the fluctuations of average heart rate changes and the percentage or permillage of VPEs every hour in a day observe relation between them basing on the result of 24 hours long duration test.Results The changes between two fluctuations are coincidence in the NHD patlents and the top of VPEs at same or after the time of average heart rate top while there being a reversal or no relation between two fluctutions in the CHD patients;the top of VPEs happens before the top of average heart rate(during 0~8 at night).Conclusion The happen of VPEs in NHD patients has great thing to do with the decreased activity of vagus nerve,but the happen of CHD is reversal with above.
出处
《实用医技杂志》
2005年第02B期417-418,共2页
Journal of Practical Medical Techniques
关键词
冠心痛
室性早搏
平均心率
Coronary heart disease
Ventricular premature beats
Average heart rate
