12 Lead ECG Placement Guide
The correct positioning of leads is essential to taking an accurate 12 lead resting ECG and incorrect placement of leads can lead to a false diagnosis of infarction or negative changes on the ECG. This guide explains the common position for each of the 10 leads on a 12 lead resting ECG.
Electrode Placement Area
V1 Fourth intercostal space to the right of the sternum.
V2 Fourth intercostal space to the left of the sternum.
V3 Directly between leads V2 and V4.
V4 Fifth intercostal space at midclavicular line.
V5 Level with V4 at left anterior axillary line.
V6 Level with V5 at the midaxillary line. (Directly under the midpoint of the armpit)
R – Right arm
L – Left arm
F – Left leg
N – Right leg