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12-Leed Placement

12-lead Precordial lead placement

  • V1: 4th intercostal space (ICS), RIGHT margin of the sternum
  • V2: 4th ICS along the LEFT margin of the sternum
  • V4: 5th ICS, mid-clavicular line
  • V3: midway between V2 and V4
  • V5: 5th ICS, anterior axillary line (same level as V4)
  • V6: 5th ICS, mid-axillary line (same level as V4)

12-Leed Posterior Placement

Leads V7-9 are placed onthe posterior chest wall in the following positions:

  • V7 – Left posterior axillary line, in the same horizontal plane as V6.
  • V8 – Tip of the left scapula, in the same horizontal plane as V6.
  • V9 – Left paraspinal region, in the same horizontal plane as V6.

Limb Lead Placement Diagram

Contact

Ministry of Health and Long-Term Care
5700 Yonge Street, 6th Floor
Toronto, ON M2M 4K5

416-327-7900

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