Step-by-step electrode placement guide for standard, right-sided, and posterior leads. Artifact recognition, common errors, and neonatal ECG differences — all in one place.
Quick Reference: Electrode Positions
Lead
Position
Landmark
V1
4th ICS, right sternal border
Sternal angle → 2nd ICS → 4th ICS
V2
4th ICS, left sternal border
Opposite V1
V3
Between V2 and V4 (diagonal)
Equidistant between V2 and V4
V4
5th ICS, midclavicular line
Apex of heart
V5
Same level as V4, anterior axillary line
NOT in 5th ICS
V6
Same level as V4, midaxillary line
NOT in 5th ICS
V4R
5th ICS, RIGHT midclavicular line
Mirror of V4 on right
V7
Same level as V4, posterior axillary line
Continue V4 level around back
V8
Same level as V4, tip of scapula
Inferior angle of left scapula
V9
Same level as V4, left paraspinal
Left of vertebral column
Placement Guides & Clinical Topics
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