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

The normal axis range on an EKG, which is an essential aspect of evaluating the heart’s electrical activity, falls between -30 degrees and +90 degrees. This range indicates the direction of the electrical activity as it moves through the heart during depolarization.

When examining the heart's electrical axis, it's important to understand that this range reflects how the heart is positioned and functioning. A normal axis suggests that the heart's electrical impulses are traveling in the expected and healthy direction, which is crucial for proper cardiac function. If the axis is outside of this range, it can indicate potential issues such as left or right axis deviation, which can be associated with various cardiac conditions.

The other ranges provided do not align with the recognized normal values for cardiac axis on an EKG. The normal axis is a critical factor for EKG interpretation, as it can provide valuable information regarding the patient's heart health and potential underlying problems.