Physio Control LIFEPAK 15, Operating Instructions Manual

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Acquiring a 12-Lead ECG
60
LIFEPAK 15 Monitor/Defibrillator Operating Instructions
Limb Lead Electrode Sites
When acquiring a 12-lead ECG, limb lead electrodes are typically placed on the wrists and
ankles as shown in the following figure. The limb lead electrodes can be placed anywhere
along the limbs. Do not place the limb lead electrodes on the torso when acquiring a 12-lead
ECG.
AHA Labels IEC Labels
RA Right Arm R Right
LA Left Arm L Left
RL Right Leg N Negative
LL Left Leg F Foot
Figure 18 Limb Lead Electrode Placement for 12-Lead ECG
Precordial Lead Electrode Sites
The six precordial (chest) leads are placed on specific locations as shown and summarized in
the following figure. Proper placement is important for accurate diagnosis and should be
identified as follows: leads are V1 through V6 for AHA, or C1 through C6 for IEC. See ECG
Leads Color Codes (on page 54) for color codes.
LEAD LOCATIONS
V1 C1 Fourth intercostal space to the right
of the sternum
V2 C2 Fourth intercostal space to the left
of the sternum
V3 C3 Directly between leads V2/C2 and
V4/C4
V4 C4 Fifth intercostal space at
midclavicular line
V5 C5 Level with V4/C4 at left anterior
axillary line
V6 C6 Level with V5/C5 at left midaxillary
line
Figure 19 Precordial Lead Electrode Placement
Locating the V1/C1 position (fourth intercostal space) is critically important, because it is the
reference point for locating the placement of the remaining V/C leads.
To locate the V1/C1 position:
1. Place your finger at the notch in the top of the sternum.
2. Move your finger slowly downward about 3.8 centimeters (1.5 inches) until you feel a
slight horizontal ridge or elevation. This is the Angle of Louis where the manubrium joins
the body of the sternum.