Question

List the names of the leads placed on the frontal plane and transverse plane of the body in a standard 12-lead ECG.

A) Frontal plane: I, II, III; Transverse plane: aVR, aVL, aVF, V1–V6
B) Frontal plane: V1–V6; Transverse plane: I, II, III
C) Frontal plane: aVR, aVL, aVF; Transverse plane: I, II, III, V1–V6
D) Frontal plane: I, II, III, V1–V6; Transverse plane: aVR, aVL, aVF

Answer 1

The leads on the frontal plane of a 12-lead ECG are I, II, and III, while the transverse plane leads include aVR, aVL, aVF, and V1 to V6. The correct answer to the student's question is Option A.

Step-by-step explanation:

In a standard 12-lead ECG, the leads placed on the frontal plane are I, II, and III. These leads measure the heart's electrical activity in the vertical plane, dividing the body into anterior (front) and posterior (rear) portions. The leads placed on the transverse plane include aVR, aVL, and aVF, along with V1 to V6. The transverse plane divides the body or organ horizontally into upper and lower portions, and these leads provide a view of the heart's electrical activity in this horizontal aspect.

The accurate listing for the leads placed on the frontal and transverse planes is Option A: Frontal plane: I, II, III; Transverse plane: aVR, aVL, aVF, V1–V6. The limb leads (I, II, and III) provide views of the heart's electrical activity from different angles in the frontal plane, while the precordial (chest) leads (V1 to V6) and augmented limb leads (aVR, aVL, aVF) offer detailed information about the heart's function in the transverse plane.