Certified Rhythm Analysis Technician (CRAT) 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

What is the purpose of the gain control on the ECG machine?

To adjust the speed of the paper

To modify the amplitude of the signals

The purpose of the gain control on the ECG machine is to modify the amplitude of the signals. Gain control adjusts how much the electrical signals from the heart are amplified before they are displayed on the ECG graph. This is important because it allows healthcare professionals to clearly see the various components of the heartbeat, such as P waves, QRS complexes, and T waves. If the gain is set too low, the deflections might be too small to interpret accurately, while setting it too high can cause the waves to be so enlarged that they overlap, causing confusion in analysis. Properly adjusting the gain ensures that the ECG tracing is easy to read and accurately reflects the electrical activity of the heart.

Get further explanation with Examzify DeepDiveBeta

To filter out electrical interference

To calibrate the time intervals

Next Question

Report this question

Download Certified Rhythm Analysis Technician (CRAT) Practice Exam PDF Study Guide
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy