What is the normal speed for an EKG to run?

The normal speed for an EKG, or electrocardiogram, is typically set at 25 mm/sec. This speed allows for a clear and accurate representation of the electrical activity of the heart over time. At this rate, each small square on standard EKG paper, which measures 1 mm, represents 0.04 seconds. This standardized speed is widely used in clinical practice, as it provides a good balance between detail and readability, making it easier for healthcare providers to interpret various aspects of the cardiac cycle, such as heart rate and rhythm, as well as any abnormalities.

Utilizing a speed of 25 mm/sec enables clinicians to visualize the time intervals accurately, which is crucial for diagnosing conditions such as arrhythmias or myocardial infarctions. Other speeds such as 12 mm/sec are sometimes used for recording 12-lead EKGs in specific situations, while the higher speeds listed can distort the depictions of cardiac activity and result in misinterpretation of the EKG tracing. Therefore, 25 mm/sec is regarded as the standard and is essential for proper EKG analysis.