Certified Rhythm Analysis Technician (CRAT) Practice Exam 2026 - Free CRAT Practice Questions and Study Guide

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What is the normal gain setting for EKG acquisition?

5 mm/mV

10 mm/mV

The normal gain setting for EKG (electrocardiogram) acquisition is typically set to 10 mm/mV. This standard allows for optimal visualization of the electrical activity of the heart, ensuring that the deflections produced by the heart's electrical signals can be easily interpreted by clinicians.

When the gain is set to 10 mm/mV, it means that a 1 millivolt (mV) electrical signal will deflect the EKG tracings by 10 millimeters on the paper. This setting provides a balance between clear representation of the waveforms and the detail needed for accurate assessment of the heart’s rhythm and conditions. Lower or higher gain settings could lead to underrepresentation or distortion of the heart signals, making it difficult to diagnose accurately.

This standardization is essential in clinical practice, allowing healthcare providers to consistently interpret EKG data across different machines and in various settings.

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15 mm/mV

20 mm/mV

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