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

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   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.

   • Lown–Ganong–Levine Syndrome

     Söderström N. Observations on the significance of shortened...

   • Wolff-Parkinson-White

     Short PR interval <120 msecs. QRS > 100msecs. Delta wave =...

   • Wenckebach Phenomenon

     Mobitz I AV block associated with inferior STEMI and RV...

   • 1st Degree Heart Block

     PR interval > 300 ms, P waves are buried in the preceding T...

   • 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

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

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   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.

4. ecgwaves.com › p-wave-pr-interval-segment-physiology-criteria-ecgP-wave, PR interval, PR segment: physiology, criteria & ECG...

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   The PR interval is assessed in order to determine whether impulse conduction from the atria to the ventricles is normal in terms of speed. The PR interval must not be too long nor too short. A normal PR interval ranges between 0.12 seconds to 0.22 seconds.

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

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   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.

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

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   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.

7. medschool.co › tests › ecg-basicsThe PR Interval | ECG Basics - MedSchool

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   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.