Department of Internal Medicine, Atrium Health - Carolinas Medical Center, P. O. Box 32861, Charlotte, NC 28232, United States of America.
J Electrocardiol. 2021 May-Jun;66:62-68. doi: 10.1016/j.jelectrocard.2021.02.014. Epub 2021 Mar 4.
According to conventional teaching, the limb leads in the electrocardiogram (ECG) represent the frontal plane electrical vectors of the heart, whereas the chest leads signify the horizontal plane. The anterior chest leads V1-V2-V3, however, also have strong frontal plane representation which can result in morphological similarities in these leads to the augmented unipolar leads of the Einthoven triangle. This review highlights the significance of recognizing V1-V2-V3 as not only horizontal, but also as frontal plane leads. Appreciation of this phenomenon helps elucidate a colorful variety of clinically important but seemingly bizarre ECG manifestations that could not be explained otherwise.
根据传统教学，心电图（ECG）的肢体导联代表心脏的额面电向量，而胸导联则代表水平面。然而，前胸部导联 V1-V2-V3 也具有很强的额面代表性，这可能导致这些导联与 Einthoven 三角的增强单极导联在形态上相似。本综述强调了认识到 V1-V2-V3 不仅是水平的，而且是额面导联的重要性。认识到这一现象有助于阐明临床上许多重要但看似奇异的 ECG 表现，否则这些表现无法得到解释。
