What does an interval represent in ECG terms?

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Multiple Choice

What does an interval represent in ECG terms?

Explanation:
An interval in ECG terms is the duration between two defined points on the tracing. It measures time, not the shape of the waveform. For example, the PR interval spans from the start of atrial depolarization (the beginning of the P wave) to the start of ventricular depolarization (the beginning of the QRS complex). The QT interval covers the whole time from the start of ventricular depolarization to the end of ventricular repolarization. Intervals are expressed in milliseconds and are used to assess conduction and timing in the heart. This differs from a wave (a single deflection), a segment (the flat baseline between waves), or a complex (a group of waves together).

An interval in ECG terms is the duration between two defined points on the tracing. It measures time, not the shape of the waveform. For example, the PR interval spans from the start of atrial depolarization (the beginning of the P wave) to the start of ventricular depolarization (the beginning of the QRS complex). The QT interval covers the whole time from the start of ventricular depolarization to the end of ventricular repolarization. Intervals are expressed in milliseconds and are used to assess conduction and timing in the heart. This differs from a wave (a single deflection), a segment (the flat baseline between waves), or a complex (a group of waves together).

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