Which of the following leads is placed on the left foot?

Which of the following leads is placed on the left foot?

• A. aVR
• B. aVL
• C. aVF
• D. Lead I

Answer: (C)

The choice indicating that the lead placed on the left foot is aVF is correct because aVF (augmented Voltage Foot) is one of the three augmented limb leads. In the configuration of the standard 12-lead EKG, aVF is derived by measuring the electrical potential on the left foot compared to the other limbs.

The aVF lead specifically reflects the electrical activity towards the left leg and helps in assessing the inferior part of the heart. Recognizing the placement of limbs is crucial for interpreting EKG readings accurately, as different leads provide unique views of cardiac electrical activity. Thus, knowing that aVF corresponds to the left foot is essential for correct lead placement and understanding EKG results.

The other leads mentioned, such as aVR, aVL, and Lead I, are not placed on the left foot, which emphasizes the specific role and positioning of aVF in capturing the heart's information from that particular perspective.