Search results
A prolonged PR interval (>0.22 s) is consistent with first-degree AV-block. A shortened PR interval (<0,12 s) indicates pre-excitation (presence of an accessory pathway). This is associated with a delta wave. This article is part of the comprehensive chapter: How to read and interpret the normal ECG.
4 lut 2021 · PR Interval. The PR interval is the time from the onset of the P wave to the start of the QRS complex. It reflects conduction through the AV node. The normal PR interval is between 120 – 200 ms (0.12-0.20s) in duration (three to five small squares).
The P-wave is generated by depolarization (activation, contraction) of the atria. The PR interval is the interval between the start of the P-wave and the start of the QRS complex. The PR interval determines whether impulse transmission from atria to ventricles is normal.
31 gru 2013 · This interval reflects the time required for an electrical impulse to propagate from the myocardial tissue surrounding the sinus node through the atrioventricular (AV) node to the Purkinje fibers.
The PR interval reflects whether the impulse transmission through the AV-node is normal (first panel), abnormally slow (second panel) or bypassed (third panel). Several conditions can reduce the ability of the atrioventricular (AV) node to conduct the atrial impulse to the ventricles.
19 maj 2024 · The PR interval includes the atrial depolarization and the propagation of the impulse through the AV node and the Conduction System until the ventricular myocardium begins to depolarize 1. It does not include the duration of conduction from the Sinus Node to the right atrium (Sinoatrial conduction).
15 lut 2021 · The PR interval is the time between atrial depolarisation and ventricular depolarisation. It is an indicator of atrioventricular conduction time, involving conduction from the atria, through the AV node and down the His-Purkinje system.
