Certified Cardiographic Technician (CCT) Practice Exam 2025 - Free CCT Practice Questions and Study Guide

An inverted T wave in leads V1 to V3 is a significant finding on an electrocardiogram (ECG) and often suggests myocardial ischemia. The T wave represents the repolarization of the ventricles, and when it becomes inverted, it can indicate that there is a disruption in normal cardiac electrical activity, commonly due to inadequate blood flow to the heart muscle.

In the context of myocardial ischemia, the inversion may occur as a compensatory response to a lack of oxygen in the myocardial tissue. This is particularly relevant in scenarios where there is angina, which is caused by the heart not receiving enough blood flow during increased demand. Therefore, observing an inverted T wave in these specific leads can raise suspicion of underlying ischemic conditions, warranting further evaluation and intervention.

While angina pectoris is indeed related to ischemia, it is not specifically diagnostic, as it refers more to the symptoms experienced. Atrial enlargement and ventricular tachycardia typically exhibit different types of electrocardiographic changes, making myocardial ischemia the most relevant interpretation of an inverted T wave in the specified leads.