8-4
The chest (V) electrode can be placed on one of the following positions:
 V1 placement: on the fourth intercostal space at the right sternal border.
 V2 placement: on the fourth intercostal space at the left sternal border.
 V3 placement: midway between the V2 and V4 electrode positions.
 V4 placement: on the fifth intercostal space at the left midclavicular line.
 V5 placement: on the left anterior axillary line, horizontal with the V4 electrode
position.
 V6 placement: on the left midaxillary line, horizontal with the V4 electrode position.
 V3R-V6R placement: on the right side of the chest in positions corresponding to those
on the left.
 VE placement: over the xiphoid process.
 V7 placement: on posterior chest at the left posterior axillary line in the fifth intercostal
space.
 V7R placement: on posterior chest at the right posterior axillary line in the fifth
intercostal space.
12-Leadwire Electrode Placement (for uMEC12/uMEC15)
12-lead ECG uses 10 electrodes, which are placed on the patient’s four limbs and chest. The
limb electrodes should be placed on the soft skin and the chest electrodes placed according to
the physician’s preference.
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