Certified EkG technician (CET) Practice Exam

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What does an inverted T wave generally indicate in an EKG?

Normal electrical activity
Potential myocardial ischemia
Pediatric heart conditions
Increased heart rate

The correct answer is: Potential myocardial ischemia

An inverted T wave on an electrocardiogram (EKG) is typically suggestive of potential myocardial ischemia, which refers to a decrease in blood flow to the heart muscle leading to an insufficient supply of oxygen. This condition can occur due to coronary artery disease or other cardiovascular issues that compromise blood circulation. The T wave represents the repolarization of the ventricles, and an inversion of this wave can indicate underlying abnormalities in the heart's electrical activity that may arise from ischemic changes. When the heart muscle is not receiving enough oxygen due to restricted blood flow, it can manifest as T wave inversions on an EKG. In contrast, a normal T wave is generally upright, and variations from this, such as inversions, can be significant clinical markers in diagnosing heart-related issues. This feature is crucial in evaluating patients who may be experiencing angina or other symptoms linked to heart problems. It is important for healthcare providers to recognize the implications of T wave inversions so they can take appropriate clinical actions.