Patient Care Technician (PCT) AAH Practice Exam

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Leads II, III, and aVF provide a view of which portion of the heart?

Anterior
Inferior
Left lateral
Right atrial

The correct answer is: Inferior

Leads II, III, and aVF are part of the standard 12-lead electrocardiogram (ECG) and are known as the limb leads. These leads provide a perspective on the inferior view of the heart. When placing these leads, they focus on the electrical activity of the inferior portions, specifically looking at the inferior wall of the left ventricle, which is supplied by the right coronary artery in most individuals. The placement of these leads allows for the assessment of the heart's electrical impulses as they emanate from this specific region. This connection is vital in diagnosing conditions such as inferior wall myocardial infarction, where understanding the heart's electrical activity in this area can guide appropriate medical interventions. In contrast, the other options refer to different areas of the heart. The anterior view is typically assessed from leads V1-V4, which focus on the anterior wall supplied primarily by the left anterior descending artery. The left lateral view would involve leads I, aVL, and parts of V5-V6, focusing on the lateral wall of the left ventricle. The right atrial view is not specifically derived from these three leads, as it is typically assessed using different leads such as V1 and V2.