Search results
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.
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.
19 maj 2024 · PR segment: line that connects the end of the P wave with the beginning of the QRS complex. PR interval: from the beginning of the P wave until the beginning of the QRS complex — that is, including the P wave.
While the PR interval is a measurement representing a period of time, the PR segment refers to the flat, usually isoelectric line between two points on the ECG — the end of the p wave and the start of the QRS complex.
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.
P-R Interval: (Include image with each wave or interval highlighted) Represents: The propagation of the cardiac action potential from the atria through the AV node into the ventricles. Normal: Duration: 0.12- 0.2s OR 3-5 small boxes. Will shorten during exercise as heart rate increases. QRS Complex ***:
This clinical study seems to correlate the changes of the P-R segment in hypertensive heart disease to the insufficiency of blood supply of the auricles, caused byprogressive sclerosis of the auricular arteries.
