Which lead name is placed at the 4th intercostal space on the right side?

Which lead name is placed at the 4th intercostal space on the right side?

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

Answer: (D)

Understanding right-sided precordial leads helps you see how the heart’s electrical activity from the right ventricle is recorded. On the right side, you place leads in mirror positions to the left-sided V1–V6. The 4th intercostal space on the right corresponds to the right-sided counterpart of V4, often labeled V4R in practice. In this course’s naming scheme, that position is called Lead Chocolate. So the best answer is Lead Chocolate because it identifies the right-side 4th intercostal space lead that mirrors the left V4 location. The other names correspond to different locations and don’t match the 4th right-side intercostal space.

Understanding right-sided precordial leads helps you see how the heart’s electrical activity from the right ventricle is recorded. On the right side, you place leads in mirror positions to the left-sided V1–V6. The 4th intercostal space on the right corresponds to the right-sided counterpart of V4, often labeled V4R in practice. In this course’s naming scheme, that position is called Lead Chocolate. So the best answer is Lead Chocolate because it identifies the right-side 4th intercostal space lead that mirrors the left V4 location. The other names correspond to different locations and don’t match the 4th right-side intercostal space.