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目的通过同步12导联动态心电图(Dynamic electrocardiogram,DECG)观察不同人群和不同方法的J波阳性率及分布特征。方法观察DECG不同性别组和不同导联的J波阳性率以及常规心电图(electrocardiogram,ECG)的J波阳性率。J波阳性率组间比较选择χ~2检验。结果女性组J波阳性率58.3%(n=307);男性组J波阳性率88.2%(n=247),显著高于女性组(χ~2=4.28E2,p=0.000)。ECG组J波阳性率48.0%(n=100);DECG组J波阳性率71.7%(n=554),显著高于ECG组(χ~2=2.18E1,p=0.000)。J波阳性DECG中V2导联J波阳性率81%(n=100),在12个导联中阳性率最高。结论 J波在DECG中属常见心电现象;男性组J波阳性率显著高于女性组;J波的空间分布以前间壁最常见;DECG组J波阳性率显著高于ECG组。
Objective To observe the J wave positive rate and its distribution characteristics in different groups and different methods by synchronizing 12-lead dynamic electrocardiogram (DECG). Methods The positive rate of J wave and the positive rate of J wave of electrocardiogram (ECG) in different sex groups and different leads of DECG were observed. J wave positive rate between the two groups compared to choose χ ~ 2 test. Results The positive rate of J wave in female group was 58.3% (n = 307). The positive rate of J wave in male group was 88.2% (n = 247), which was significantly higher than that in female group (χ ~ 2 = 4.28E2, p = 0.000). The positive rate of J wave in ECG group was 48.0% (n = 100). The positive rate of J wave in DECG group was 71.7% (n = 554), significantly higher than ECG group (χ ~ 2 = 2.18E1, p = 0.000). J wave positive DECG V2 lead J wave positive rate of 81% (n = 100), the highest positive rate in 12 lead. Conclusions J wave is a common electrocardiogram phenomenon in DECG. The positive rate of J wave in male group is significantly higher than that in female group. The spatial distribution of J wave is the most common in the former. The positive rate of J wave in DECG group is significantly higher than that in ECG group.