摘要
目的 探讨急性心肌梗塞患者的心率变异性。方法 对３４例急性心肌梗塞（ＡＭＩ）患者及３０例正常对照者２４小时动态心电图进行分析，通过计算机人工确认窦性心搏后，经计算机处理，算出心率变异（ＨＲＶ）的时域和频域的各项指标。结果 ＡＭＩ组与对照组的平均心动周期标准差（ＳＤＮＮ）、相邻Ｒ－Ｒ 间期之差的均方根值（ｒＭＳＳＤ）、相邻Ｒ－Ｒ 间期差值＞ ５ ｍｓ 的百分比（ＰＮＮ５０）、低频（ＬＦ）、高频（ＨＦ）及ＬＦ／ＨＦ比值均有显著性差异（Ｐ＜ ０．０１）。结论 ＡＭＩ后心脏副交感神经张力水平下降，交感神经与副交感神经平衡失调，且与ＡＭＩ预后相关。
Objective To elucidate the heart rate variability(HRV) in patients with acute myocardial infarction(AMI).Methods The 24 hour ambulatory ECG recordings were assessed in 34 patients with acute myocardial infarction and 30 healthy subjects (HS).HRV were obtained from computer.Results SDNN(standard deviation of all normal R R intervals)、rMSSD(root mean square successive difference)、PNN 50 (percent of differences between adjacent normal R R interval>50 ms)、LF(low frequency)、HF(high frequency) and LF/HF frequency ratio were significantly lower in AMI than those in HS( P <0.01).Conclusion Sympathetic hyperactivity and parasympathetic with drawal in AMI correlated closely with long term prognosis. [
出处
《临床内科杂志》
CAS
2000年第1期25-26,共2页
Journal of Clinical Internal Medicine
关键词
心肌梗塞
心率变异性
急性
Myocardial infarction
Heart rate variability
