Certified EKG Technician (CET) Practice Exam 2025 – Comprehensive Test Prep

Question: 1 / 400

What does the U wave represent if seen on an EKG?

Atrial depolarization

Post-repolarization waves

The U wave on an electrocardiogram (EKG) is considered to represent post-repolarization waves. It typically follows the T wave and can indicate the completion of repolarization of the myocardium (heart muscle). While the exact origin of the U wave is not fully understood, it is thought to be related to the repolarization processes of the ventricles.

U waves can be more prominent in certain conditions such as hypokalemia, which is a low potassium level in the blood, but are normally considered a variant of repolarization waves. Recognizing the U wave and understanding its significance is important for interpreting the overall cardiac electrical activity and for assessing potential underlying conditions that may affect heart health.

Get further explanation with Examzify DeepDiveBeta

An abnormal heart rhythm

Muscle contraction

Next Question

Report this question

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy