老年急性心梗患者QRS时限异常与室性心律失常发生率的相关性

目的分析老年急性心梗(AMI)患者QRS时限异常与室性心律失常发生率的相关性。方法选取125例老年AMI患者,根据其心电图QRS波群时限将其分为A组39例(QRS时限160 ms)、B组49例(QRS时限为120~160 ms)、C组37例(QRS时限120 ms)。对3组患者的室性期前收缩LOWN分级、心率变异性指标进行观察和比较。结果 C组患者的Ⅲ级、ⅣA级、ⅣB级室性期前收缩发生率显著低于A组和B组(P0.05)。C组患者的各项心率变异性指标均显著高于B组和A组,B组患者的各项心率变异性指标均显著高于A组(P0.05)。结论老年AMI患者QRS时限的增长与其室性心律失常风险的升高和心率变异性的降低有关,可作为预测老年AMI后室性心律失常发生的辅助指标。

Correlation between abnormality of QRS duration and incidence of ventricular arrhythmia in elderly patients with acute myocardial infarction

Objective To study and analyze the correlation between abnormality of QRS duration and incidence of ventricular arrhythmia in elderly patients with acute myocardial infarction (AMI).Methods A total of 125 elderly patients with AMI were selected as the research subjects and were divided into group A (QRS duration ＞ 160 ms,39 cases),group B (QRS duration was 120 ～160 ms,49 cases),and group C (QRS duration ＜ 120 ms,37 cases) according to QRS duration in ECG.The LOWN grades of ventricular extrasystoles,the indexes of heart rate variability of the patients in the three groups were observed and compared.Results The incidences of ventricular extrasystoles with Ⅲ grade,ⅣA grade,Ⅳ B grade in group C were significantly lower than that in group A or group B,and there were statistically significant differences between the groups (P ＜ 0.05).The indexes of heart rate variability in group C were significantly higher than that in group B,the indexes of heart rate variability of the patients in group B were significantly higher than that in group A,and the differences between the groups were statistically significant (P ＜ 0.05).Conclusion The increase of QRS duration of the elderly patients with AMI is correlated with the increase of the risk of ventricular arrhythmia and the decrease of heart rate variability,and can be used as the auxiliary index to predict the occurrence of ventricular arrhythmia after AMI.