静息心率水平对老年冠心病患者预后的影响

Relationship between resting heart rate and the prognosis of coronary heart disease in elderly patients

目的:探讨静息心率(RHR)水平对老年冠心病患者的影响和临床意义。方法:121例老年冠心病患者,根据RHR水平分为:A组(50～70次/min),35例;B组(70～90次/min),48例;C组(≥90次/min),38例。对患者进行24h动态心电图和心脏B超检查,测定左室舒张末期内径(LVEDD)和左室射血分数(LVEF)。结果:随着RHR的增高,患者胸闷、心悸不适的发生率及心肌缺血检出率增加,C组明显高于B组及A组,差异具有统计学意义;C组EF明显低于B组及A组,差异具有统计学意义(P<0.05或P<0.01)。结论:静息心率水平与老年冠心病患者的预后密切相关,心率增快是预后不良的危险因素和先兆,对冠心病患者应该严格控制心率,从而改善预后。

Objective：To investigate the value of resting heart rate （RHR） in the prognosis of coronary heart disease in elderly patients and the correlation between two of them. Methods： According to RHR levels,121 elderly patients with CHD were divided into 3 groups： group A （50～70 times / min）,group B （70～90 times / min）,and group C （≥ 90 times / min）,each of which included 35,48 and 38 cases. 24 h ambulatory electrocardiogram and cardiac B ultrasound were performed on all these patients,left ventricular end-diastolic diameter （LVEDD） and left ventricular ejection fraction （LVEF） were also measured. Results： With the increase of RHR, incidence of chest tightness and palpitations, frequency of myocardial ischemia also increased showing significant differences among the 3 groups （ group A 〉 group B 〉 group C）. EF of group C was significant lower than that of group A and group B （P 〈0.05 or P 〈 0.01 ） Conclusion： The resting heart rate levels were correlated with the prognosis of coronary heart disease in eldly patients, thus improving the prognosis.