Certified EkG technician (CET) Practice Exam

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What is the primary purpose of a Holter monitor?

To monitor blood pressure
To chart patient dietary intake
To record the heart's electrical activity over 24-48 hours
To measure oxygen saturation in the blood

The correct answer is: To record the heart's electrical activity over 24-48 hours

The primary purpose of a Holter monitor is to continuously record the heart's electrical activity over a period of 24-48 hours. This portable device provides a valuable method for detecting arrhythmias or other cardiac issues that may not be present during a standard ECG test, which is typically done for a very short duration. By wearing the Holter monitor, patients can go about their daily activities while the device captures fluctuations in their heart rhythm, allowing healthcare providers to analyze the data and make informed decisions regarding the patient's cardiac health. For context, monitoring blood pressure, charting dietary intake, and measuring oxygen saturation although important functions in the medical field, do not relate to the specific role of a Holter monitor, which is solely focused on the electrical activity of the heart.