Which waveforms are observed on a typical ECG tracing?

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Multiple Choice

Which waveforms are observed on a typical ECG tracing?

Explanation:
An ECG records the heart’s electrical activity as a smooth sequence of waves that correspond to different parts of the cardiac cycle. The P wave is the atrial depolarization signal, showing atrial activation as the atria prepare to contract. The QRS complex reflects ventricular depolarization, the main event that triggers strong ventricular contraction. The T wave represents ventricular repolarization, as the ventricles reset for the next beat. Sometimes a small U wave appears after the T wave, associated with late repolarization in some people, but it isn’t always present. So a typical ECG tracing includes the P wave, the QRS complex, and the T wave, with a U wave optionally seen.

An ECG records the heart’s electrical activity as a smooth sequence of waves that correspond to different parts of the cardiac cycle. The P wave is the atrial depolarization signal, showing atrial activation as the atria prepare to contract. The QRS complex reflects ventricular depolarization, the main event that triggers strong ventricular contraction. The T wave represents ventricular repolarization, as the ventricles reset for the next beat. Sometimes a small U wave appears after the T wave, associated with late repolarization in some people, but it isn’t always present. So a typical ECG tracing includes the P wave, the QRS complex, and the T wave, with a U wave optionally seen.

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