What is the purpose of an electrocardiogram (ECG or EKG)?

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Multiple Choice

What is the purpose of an electrocardiogram (ECG or EKG)?

Explanation:
An ECG records the heart’s electrical activity, showing how fast the heart is beating, whether its rhythm is regular, and how the electrical impulses travel through the heart’s conduction system. By tracing these signals, an ECG reveals rate, rhythm, and conduction abnormalities, helping identify arrhythmias, blocks, and patterns that suggest ischemia or prior heart damage. It doesn’t measure chamber pressures (that requires invasive pressure monitoring), it doesn’t image the heart using ultrasound (that’s echocardiography), and it doesn’t visualize the chest with X-rays (which show anatomy and other structures but not electrical activity).

An ECG records the heart’s electrical activity, showing how fast the heart is beating, whether its rhythm is regular, and how the electrical impulses travel through the heart’s conduction system. By tracing these signals, an ECG reveals rate, rhythm, and conduction abnormalities, helping identify arrhythmias, blocks, and patterns that suggest ischemia or prior heart damage. It doesn’t measure chamber pressures (that requires invasive pressure monitoring), it doesn’t image the heart using ultrasound (that’s echocardiography), and it doesn’t visualize the chest with X-rays (which show anatomy and other structures but not electrical activity).

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