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目的 :探讨倍他乐克对急性心肌梗死 (AMI)患者心率变异性 (HRV)的影响。方法 :60例AMI患者随机分为 2组 ,试验组 2 8例进行常规加用倍他乐克治疗 ,对照组 3 2例常规治疗。结果 :试验组HRV的平均R R间期的标准差 (SDANN)、平均R R间期的变异数 (CV)、相邻周期长度之差大于 5 0ms所占比例 (PNN)、所有相邻周期长度平方差的平均总和的平方根 (RMDD)较对照组增加 ,低频域 (LF)、低频 /高频 (LF/HF)较对照组降低 (P <0 0 5或P <0 0 1)。结论 :AMI患者早期给予倍他乐克治疗能使患者HRV明显增加 ,有助于改善预后 ,降低猝死率
Objective: To investigate the effect of Betaloc on heart rate variability (HRV) in patients with acute myocardial infarction (AMI). Methods: Sixty patients with AMI were randomly divided into two groups. In the experimental group, 28 cases were treated with metoprolol routinely and the control group with 32 routine treatment. Results: The standard deviation (SDANN), average RR interval variation (CV) and the difference between adjacent cycles in the experimental group were greater than 5 0ms (PNN), the square of the length of all adjacent cycles The mean square error (RMDD) of the poor group was higher than that of the control group. LF and LF / HF were lower than those of the control group (P <0.05 or P <0.01). Conclusion: The early treatment with metoprolol in patients with AMI can significantly increase the HRV of patients, which can improve the prognosis and reduce the rate of sudden death