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  1. litfl.com › prPR Interval • LITFL • ECG Library Basics

    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). If the PR interval is > 200 ms, first degree heart block is said to be present.

    • Q Wave

      A Q wave is any negative deflection that precedes an R wave...

    • ECG Library

      ECG Library Content. ECG Basics – Waves, Intervals, Segments...

    • QRS Segment

      AV node / junction (= either no P wave or an abnormal P wave...

    • Osborn Wave

      Eponymous History of the Osborn Wave. 1922 – Kraus described...

  2. en.my-ekg.com › how-read-ekg › pr-intervalPR Interval - My EKG

    19 maj 2024 · The most important findings in Wolff-Parkinson-White syndrome are a short PR interval, the presence of the delta wave and wide QRS complex. In ectopic atrial pacemaker or AV junctional rhythm may be seen a short PR interval with an abnormal P waves with narrow QRS complex.

  3. en.wikipedia.org › wiki › PR_intervalPR interval - Wikipedia

    In electrocardiography, the PR interval is the period, measured in milliseconds, that extends from the beginning of the P wave (the onset of atrial depolarization) until the beginning of the QRS complex (the onset of ventricular depolarization); it is normally between 120 and 200 ms in duration.

  4. ecgwaves.com › overview-of-the-ecg-waves-deflections-intervals-durationsOverview of the ECG Waves, Deflections, Intervals, Durations

    ECG interpretation starts with assessment of the P-wave and PR interval. 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.

  5. www.ecgessentials.com › ecg-basics › the-normal-ecgThe PR Interval - ECG Essentials

    The PR interval is a measurement of the time it takes from the start of the p wave to the start of the QRS complex, typically 3-5 mm in duration. This interval is representative of the physiologic delay caused by transmission of impulses through the AV node.

  6. en.my-ekg.com › basic-principles › intervals-segments-ekgIntervals and Segments of the Electrocardiogram - My EKG

    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.

  7. ecgwaves.com › topic › the-pr-interval-pr-segmentThe PR Interval & PR segment – Cardiovascular Education - ECG &...

    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.