Optimized Positioning of ECG Electrodes for WSN Applications - Application and Multidisciplinary Aspects of Wireless Sensor Networks - page 180

Fig. 9.1 Positioning of
precordial electrodes of
12-lead electrocardiogram
(ECG)
Fig. 9.2 Einthoven triangle
unipolar. The precordial leads enable the observation of the heart in the horizontal
plane, across the heart center, from angles covered by V6-V1 in steps of approxi-
mately 15°.
Limb leads are traditionally denoted by I, II, and III, and obtained as electrical
potential differences from the pairs of limb electrodes,