Standard 3-wire Lead Sets:
Three-line leads can monitor one of the three ECG vectors (I, II,
or III). Recommended placement of the three-line leads is as
follows.
• Place the RA (white) electrode below the patient's right
clavicle, within the rib cage along the midclavicular line.
• Place the LA (black) electrode below the patient's left clavicle,
within the rib cage along the midclavicular line.
• Place the LL (red) electrode in the patient's left lower abdomen,
within the rib cage.
Standard 5-wire Lead Sets:
A five-lead electrocardiograph can simultaneously monitor seven ECG
vectors (I, II, III, aVR, aVL, aVF, and V). Recommended placement
for a five-lead electrocardiograph is as follows.
• Place the RA (white) electrode below the patient's right
clavicle, within the midclavicular line and rib cage.
• Place the LA (black) electrode below the patient's left clavicle,
within the midclavicular line and rib cage.
• Place the LL (red) electrode in the patient's left lower abdomen,
within the rib cage.
• Place the RL (green) electrode in the patient's right lower
abdomen, within the rib cage.
• Place the V (brown) electrode in one of the V lead positions (V1
– V6) shown in the next section.
