The 2nd intercostal space below the middle of the left clavicle corresponds to which lead name?

The 2nd intercostal space below the middle of the left clavicle corresponds to which lead name?

• A. Lead Snow
• B. Lead Smoke
• C. Lead Grass
• D. Lead Fire

Answer: (B)

Think of chest leads by the mnemonic Snow–Smoke–Grass–Fire, which helps map specific precordial positions to lead names. The point described—the left chest in the vicinity of the second intercostal space under the clavicle—fits the region associated with the lead named Smoke in this mnemonic. In this scheme, each word corresponds to a particular position along the chest, so this location best matches Smoke. The other names correspond to the other chest positions in the same sequence, so they don’t align with this exact spot.

Think of chest leads by the mnemonic Snow–Smoke–Grass–Fire, which helps map specific precordial positions to lead names. The point described—the left chest in the vicinity of the second intercostal space under the clavicle—fits the region associated with the lead named Smoke in this mnemonic. In this scheme, each word corresponds to a particular position along the chest, so this location best matches Smoke. The other names correspond to the other chest positions in the same sequence, so they don’t align with this exact spot.