Which device measures the heart’s electrical activity?

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Multiple Choice

Which device measures the heart’s electrical activity?

Measuring the heart’s electrical activity is done with an electrocardiogram (ECG) machine. The heart’s rhythm is driven by electrical impulses, and small sensors placed on the skin detect these signals and translate them into a tracing. This tracing shows the electrical events that trigger each heartbeat, typically represented by P, QRS, and T waves, which help identify normal rhythm and abnormalities like irregular rhythms or conduction problems. The other devices have different roles: a stethoscope listens to heart sounds, a sphygmomanometer measures blood pressure, and a thermometer checks body temperature.

Measuring the heart’s electrical activity is done with an electrocardiogram (ECG) machine. The heart’s rhythm is driven by electrical impulses, and small sensors placed on the skin detect these signals and translate them into a tracing. This tracing shows the electrical events that trigger each heartbeat, typically represented by P, QRS, and T waves, which help identify normal rhythm and abnormalities like irregular rhythms or conduction problems.

The other devices have different roles: a stethoscope listens to heart sounds, a sphygmomanometer measures blood pressure, and a thermometer checks body temperature.

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