Leads II, III, and aVF provide an inferior view of the heart.

Leads II, III, and aVF provide an inferior view of the heart.

• A. True
• B. False
• C. Not sure
• D. None of the above

Answer: (A)

Inferior view is captured by the limb leads that look at the heart from below. In a standard ECG, limb leads form Einthoven’s triangle. Lead II runs from the right arm to the left leg, Lead III runs from the left arm to the left leg, and aVF is the augmented view projecting toward the foot. Together these vectors point toward the bottom (inferior) surface of the heart, which is the area supplied mainly by the right coronary artery. Therefore electrical activity from the inferior wall is best seen in these leads, and ischemia or infarction there produces changes specifically in them. This makes the statement true.

Inferior view is captured by the limb leads that look at the heart from below. In a standard ECG, limb leads form Einthoven’s triangle. Lead II runs from the right arm to the left leg, Lead III runs from the left arm to the left leg, and aVF is the augmented view projecting toward the foot. Together these vectors point toward the bottom (inferior) surface of the heart, which is the area supplied mainly by the right coronary artery. Therefore electrical activity from the inferior wall is best seen in these leads, and ischemia or infarction there produces changes specifically in them. This makes the statement true.