Nakagawa Mikiko, Tsunemitsu Chie, Katoh Sayo, Kamiyama Yukari, Sano Nario, Ezaki Kaori, Miyazaki Hiroko, Teshima Yasushi, Yufu Kunio, Takahashi Naohiko, Saikawa Tetsunori
Department of Cardiology and Clinical Examination, 1-1 Idaigaoka, Yufu City, Oita, Japan.
Laboratory Medicine, Faculty of Medicine, Oita University, 1-1 Idaigaoka, Yufu City, Oita, Japan.
J Electrocardiol. 2014 Jan-Feb;47(1):7-11. doi: 10.1016/j.jelectrocard.2013.10.001. Epub 2013 Oct 8.
While J-waves were observed in healthy populations, variations in their reported incidence may be partly explicable by the ECG filter setting.
We obtained resting 12-lead ECG recordings in 665 consecutive patients and enrolled 112 (56 men, 56 women, mean age 59.3±16.1years) who manifested J-waves on ECGs acquired with a 150-Hz low-pass filter. We then studied the J-waves on individual ECGs to look for morphological changes when 25-, 35-, 75-, 100-, and 150Hz filters were used.
The notching observed with the 150-Hz filter changed to slurring (42%) or was eliminated (28%) with the 25-Hz filter. Similarly, the slurring seen with the 150-Hz filter was eliminated on 71% of ECGs recorded with the 25-Hz filter. The amplitude of J-waves was significantly lower with 25- and 35-Hz than 75-, 100-, and 150-Hz filters (p<0.0001).
The ECG filter setting significantly affects the J-wave morphology.
虽然在健康人群中观察到了J波，但其报告发病率的差异可能部分可归因于心电图滤波器设置。
我们获取了665例连续患者的静息12导联心电图记录，并纳入了112例（56名男性，56名女性，平均年龄59.3±16.1岁）在使用150Hz低通滤波器采集的心电图上表现出J波的患者。然后，我们研究了个体心电图上的J波，以寻找使用25Hz、35Hz、75Hz、100Hz和150Hz滤波器时的形态变化。
使用150Hz滤波器观察到的切迹在使用25Hz滤波器时变为顿挫（42%）或消失（28%）。同样，使用150Hz滤波器时看到的顿挫在使用25Hz滤波器记录的71%的心电图上消失。使用25Hz和35Hz滤波器时J波的振幅明显低于使用75Hz、100Hz和150Hz滤波器时（p<0.0001）。
心电图滤波器设置显著影响J波形态。
