Question

______ chest leads permit viewing the cardiac electrical vector from different orientations in a cross‐sectional plane.

A) Anterior
B) Lateral
C) Inferior
D) Posterior

Answer 1

The correct answer is A) Anterior. Chest leads in an ECG allow viewing the cardiac electrical vector from different orientations in a cross-sectional plane.

Step-by-step explanation:

The correct answer is A) Anterior.

Chest leads in an electrocardiogram (ECG) allow viewing the cardiac electrical vector from different orientations in a cross-sectional plane. The anterior chest leads provide a view from the front of the body, showing the electrical activity of the heart from the front. This is important in diagnosing various cardiac conditions and abnormalities.

For example, lead V1 is placed on the fourth intercostal space to the right of the sternum and provides a view of the right ventricle. Lead V2 is placed on the fourth intercostal space to the left of the sternum and provides a view of the intraventricular septum. These leads, along with other anterior chest leads, give a comprehensive assessment of the electrical activity of the heart from the front.