What is the graphic picture of the heart's electrical activity?

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Multiple Choice

What is the graphic picture of the heart's electrical activity?

Explanation:
The graphic picture of the heart’s electrical activity is an electrocardiogram. This tracing is produced when the skin’s surface electrodes connected to an electrocardiograph detect the heart’s electrical signals over time. On the trace you can see the P wave (atrial depolarization), the QRS complex (ventricular depolarization), and the T wave (ventricular repolarization). The word “interval” refers to specific time measurements on that tracing (like PR or QT intervals), not the picture itself. A Holter monitor is a portable device used to record ECG data over 24 hours or more, providing long-term monitoring, while the electrocardiograph is the machine that records the electrocardiogram.

The graphic picture of the heart’s electrical activity is an electrocardiogram. This tracing is produced when the skin’s surface electrodes connected to an electrocardiograph detect the heart’s electrical signals over time. On the trace you can see the P wave (atrial depolarization), the QRS complex (ventricular depolarization), and the T wave (ventricular repolarization). The word “interval” refers to specific time measurements on that tracing (like PR or QT intervals), not the picture itself. A Holter monitor is a portable device used to record ECG data over 24 hours or more, providing long-term monitoring, while the electrocardiograph is the machine that records the electrocardiogram.

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