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Applying Monitoring Electrodes
M3500B HeartStart XLT Defibrillator/Monitor 4-3
4
Electrode Placement
Figure 4-1 shows typical electrode placement for the limb leads of a 3- or 5-
lead patient cable. The V/C lead of the 5-lead cable can be placed in any of the
precordial lead positions (V1/C1 through V6/C6) shown in Figure 4-2.
Figure 4-1 Limb Lead Electrode Placement
Table 4-1 3-Lead ECG Lead Formation
Lead + - Reference
I
LA RA LL
II
LL RA LA
III
LL LA RA
AHA Labels IEC Labels
RA Right Arm R Right
LA Left Arm L Left
RL Right Leg* N Negative*
LL Left Leg
F Foot
RA/R LA/L
RL/N LL/F
* Not used for 3-lead.
*