ECG
11-5
Color and letter coding
IEC standard
AAMI standard
3-lead ECG Position
on body
surface
5-lead ECG Position
on body
surface
Position on
surface
R = red right arm R = red right arm right arm
L = yellow left arm L = yellow left arm left arm
F = green left leg F = green left leg left leg
N = black right leg (neutral) right leg (neutral)
C = white chest 4th intercostal
space at right
border of sternum
3-lead ECG Position
on body
surface
5-lead ECG Position
on body
surface
Position on
surface
RA = white right arm RA = white right arm right arm
LA = black left arm LA = black left arm left arm
LL = red left leg LL = red left leg left leg
RL = green right leg (neutral) right leg (neutral)
V = brown chest 4th intercostal
space at right
border of sternum