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The PR segment is the flat line between the end of the P-wave and the start of the QRS complex. The PR segment reflects the time delay between atrial and ventricular activation. The PR segment also serves as the baseline (reference line or isoelectric line) of the ECG curve.
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The flat line between the end of the P-wave and the onset of the QRS complex is called the PR segment and it reflects the slow impulse conduction through the atrioventricular node. The PR segment serves as the baseline (also referred to as reference line or isoelectric line ) of the ECG curve.
The PR segment is the portion of the ECG from the end of the P wave to the beginning of the QRS complex. The PR segment is different from the PR interval, which is measured in units of time.
19 maj 2024 · The PR interval represents the atrial depolarization and physiological delay of the stimulus in the atrioventricular (AV) node. It is measured from the beginning of the P wave until the beginning of the Q or R wave. Its normal value is between 0.12 s and 0.20 s.
A brief isoelectric period, known as the P-R segment, next occurs during which the atria are completely depolarized and the impulse is spreading slowly through the AV node (time it takes to get through AV node).
20 cze 2024 · P-R segment starts from the end of the P wave to the beginning of the QRS complex (Fig. 4.2). It is an isoelectric line. It does not include the P wave and is part of the P-R interval. It allows time for the atria to empty blood into the ventricles before ventricular contraction begins.
The P-wave, PR interval and PR segment. ECG interpretation traditionally starts with an assessment of the P-wave. The P-wave reflects atrial depolarization (activation). The PR interval is the distance between the onset of the P-wave to the onset of the QRS complex.
