Also, as per the Einthoven law, the six limb leads can be derived from leads 1 and 2. The purpose of this study was to evaluate whether the 12-lead ECG could be substituted by ECG sets with a ...
One can either use calculated sums of the amplitudes of QRS complexes of all 12 leads, or the 6 limb leads, or only leads I and II. As noted above, the precordial leads are unreliable ...