Bartosik J, Pahlm O, Edenbrandt L, Svensson J, Haisty W K, Wagner G S
Department of Clinical Physiology, Lund University, Sweden.
J Electrocardiol. 1995 Jan;28(1):33-8. doi: 10.1016/s0022-0736(05)80005-6.
Proximal or torso placement of limb leads in the 12-lead electrocardiogram (ECG) has been shown to influence the appearance of QRS waveforms considerably. A method was developed for computer-based reconstruction of standard-like waveforms from nonstandard torso-recorded waveforms. Reconstruction coefficients required by the method were determined using ECG data obtained from 30 patients. The coefficients were then applied on an independent test set of 100 patients. In 21 of these patients, a second standard EGG was obtained the next day to determine the day-to-day variation in QRS waveforms. R wave amplitudes in leads I and II, and electrical axes in the frontal plane were measured in the standard ECG, the nonstandard ECG, and the reconstructed ECG. It is shown that the reconstruction method yields ECGs that differ less from standard than do two standard ECGs recorded on consecutive days. The performance of the reconstruction method was not influenced by age, sex, height, or weight.
12导联心电图（ECG）中肢体导联的近端或躯干放置已被证明会显著影响QRS波形的外观。开发了一种基于计算机的方法，用于从非标准躯干记录的波形重建类似标准的波形。该方法所需的重建系数使用从30名患者获得的心电图数据来确定。然后将这些系数应用于100名患者的独立测试集。在这些患者中的21名中，第二天获得了第二个标准心电图，以确定QRS波形的每日变化。在标准心电图、非标准心电图和重建心电图中测量了I导联和II导联中的R波振幅以及额面电轴。结果表明，与连续两天记录的两个标准心电图相比，重建方法产生的心电图与标准心电图的差异更小。重建方法的性能不受年龄、性别、身高或体重的影响。
