摘要
[目的]探讨心脏电生理改变,即Q -T间期变异昼夜规律及心率变异性与缺血性心脏病的关系。[方法]观察5 5例缺血性心脏病病人(观察组)和5 0例正常成人(对照组)的2 4h心脏电生理改变,监测0 6:0 1～2 2 :0 0和2 2 :0 1～0 6:0 0时段的动态心电图中Q -T间期、Q -T间期变异、Q -T/HR斜率的变化及昼夜规律。[结果]两组心率、Q -T间期、Q -T间期变异、Q -T/HR斜率均呈明显的昼夜规律,两组比较昼夜心率、Q -T间期无统计学意义(P >0 .0 5 ) ;但Q -T间期变异、Q -T/HR斜率有统计学意义(P <0 .0 5 )。[结论]Q -T间期变异、Q -T/HR斜率能反映心室水平的自主神经调节及心室肌本身的状态,对预测室性心律失常及猝死的发生具有重要的价值和临床意义。
Objective: to probe into cardiac electrophysiological changes, that is relations between day-night regularity of Q-T interval variation and heart rate variation with ischemic cardiac diseases. Method: a total of 55 cases with ischemic cardiac disease were selected as test group another 50 health individuals as control group. Cardiac electrophysiological changes of all cases were observed for 24 hours. Changes of Q-T interval, Q-T interval variation, and Q-T/HR and their day-night regularities of all cases were monitored between 06:01 to 22:00 and 22:01 to 06:00. Result: there were remarkable day-night regularities in terms of heart rate, Q-T interval, Q-T interval variation, and Q-T/HR among cases either test or control group. There were no statistical differences between the two groups in terms of heart rate and Q-T interval Q-T interval. However, there were statistical differences between the two groups in terms of Q-T interval variation and Q-T/HR(P<0.05). Conclusion: Q-T interval variation and Q-T/HR could reflect autonomic nerve adjustment of ventricles and state of ventricular muscle itself. Moreover, Q-T interval variation and Q-T/HR have important values and clinical significances on predicting ventricular arrhythmia and the sudden death of patients.
出处
《护理研究》
2005年第5期796-797,共2页
Chinese Nursing Research
关键词
心脏电生理
Q—T间期
Q—T间期变异
心率变异性
缺血性心脏病
cardiac electrophysiology
Q-T interval
Q-T interval variation
heart rate variability
ischemic cardiac disease
