Which statement about ECG is true?

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Multiple Choice

Which statement about ECG is true?

Explanation:
An ECG records the heart’s electrical impulses as the heart beats and presents them as a printout or trace. This electrical activity, shown on the ECG with waves (like P, QRS, and T), reveals rhythm, conduction, and possible abnormalities such as arrhythmias or ischemia. It’s non-invasive and uses skin electrodes to capture signals. It doesn’t measure blood pressure (that’s a cuff-based pressure reading), nor does it record brain activity (that’s EEG), nor test lung capacity (that’s spirometry or similar pulmonary tests).

An ECG records the heart’s electrical impulses as the heart beats and presents them as a printout or trace. This electrical activity, shown on the ECG with waves (like P, QRS, and T), reveals rhythm, conduction, and possible abnormalities such as arrhythmias or ischemia. It’s non-invasive and uses skin electrodes to capture signals.

It doesn’t measure blood pressure (that’s a cuff-based pressure reading), nor does it record brain activity (that’s EEG), nor test lung capacity (that’s spirometry or similar pulmonary tests).

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