早期复极改变106例心电图特征分析

Electrocardiographic characteristics analysis on 106 cases with early repolarization variant

目的探讨早期复极改变（ERV）患者的临床心电图特征。方法根据临床及心电图表现入选ERV患者106例，并入选健康体检者100名作为对照组，分析比较两组心电图特征及ERV好发部位。结果早期复极改变组与健康对照组平均心率分别为（68．6±8．4）、（74．8±12．6）次／min，QRS时限分别为（95±10）、（96±11）ms，Q-T离散度分别为（388±12）、（379±14）ms，Tp—Te分别为（80．4±7．6）、（78．5±8．3）ms，组间比较差异均无统计学意义（t值分别为0．72、0．58、0．65、0．59，P均〉0．05）。J波在下壁导联的发生率为67．9％（72／106），侧壁为15．1％（16／106），中胸为17．0％（18／106），下壁导联的发生率明显高于其他导联（χ^2值分别为为57．1、68．5，P均〈0．01）。结论ERV在下壁导联多见。

Objective To investigate the electrocardiogram （ECG） characteristics of patients with early repolarization variant （ERV）. Methods One hundred and six patients diagnosed of ERV based on clinical and ECG and the healthy control group of 100 patients were analyzed and ECG features and ERV site were compared between these two groups. Results The mean heart rate （ [ 68. 6 ± 8.4 ] beats/min vs [ 74. 8 ± 12. 6 ] beats/min）, QRS time （ [ 95 ± 10 ] ms, [ 96 ± 11 ] ms vs [ 388 ± 12 ] ms, [ 379 ± 14 ] ms）, QT dispersion and Tp-Te （ [80.4 ±7.6]ms vs [78. 5 ±8.3]ms） were compared respectively between ERV group and control group and there was no significant difference （P 〉 0. 05）. The occurrence of J wave in inferior leads was 67.9% ,15.1% for the side wall leads, and 17.0% for the chest leads ,thus inferior wall leads had higher incidence than other leads relatively in ERV （ P 〈 0.01 ）. Conclusion ERV exhibits more occurrence in inferior wall leads.