Master the Basics of ECG

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Questions and Answers

Which of the following best describes electrocardiography (ECG)?

A process of producing an electrocardiogram through repeated cardiac cycles (correct)
A graph of voltage versus time of the electrical activity of the heart
A technique to measure the heart's electrical conduction system
A method to detect electrical changes during each cardiac cycle

What is the purpose of the electrodes in electrocardiography (ECG)?

To visualize the heart's structure
To monitor the heart's mechanical activity
To measure the heart's voltage
To detect the small electrical changes during each cardiac cycle (correct)

Which leads in electrocardiography (ECG) are bipolar leads?

I, II, and III (correct)
aVR, aVL, and aVF
I, aVR, and aVF
II, III, and aVL

What is the purpose of the third electrode in the limb leads of electrocardiography (ECG)?

<p>To minimize electrical activity from other sources (D)</p> Signup and view all the answers

What is the difference between bipolar leads and unipolar leads in electrocardiography (ECG)?

<p>Bipolar leads consist of two electrodes of opposite polarity, while unipolar leads have a single positive electrode (D)</p> Signup and view all the answers