Amp Up Your Skills with the Certified EKG Technician (CET) Practice Exam 2025 – Pulse Your Way to Success!

Question: 1 / 400

How can excessive potassium affect EKG readings?

It decreases heart rate

It causes a prolonged PR interval

It can lead to widening of QRS complex

Excessive potassium levels, or hyperkalemia, have a significant effect on cardiac electrophysiology, which is reflected in EKG readings. One of the hallmark changes associated with high potassium levels is the widening of the QRS complex. This happens because increased potassium disrupts the normal depolarization of cardiac myocytes, slowing conduction through the ventricles. As a result, the QRS duration lengthens, which can also lead to more serious arrhythmias if left unaddressed.

The relationship between potassium levels and cardiac activity is crucial for interpreting EKGs in a clinical setting, as alterations in the QRS complex can indicate severe electrolyte imbalances and inform the need for immediate medical action. Understanding this connection helps EKG technicians recognize life-threatening conditions related to electrolyte disturbances.

Get further explanation with Examzify DeepDiveBeta

It has no effect on the EKG

Next Question

Report this question

Download Certified EkG technician (CET) Practice Exam PDF Study Guide
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy