Short PR

short PR interval is less than 3 mm (120 ms) at standard settings. This is usually caused by a pre-excitation syndrome where the impulse can travel from the atria through to the ventricles abnormally fast, or from a junctional rhythm.

Featured Example

References

ECG Library (25)

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In the ECGquest archives, this ECG has been tagged with: - Chest pain Dyspnoea 12-Lead Absent P waves Bradycardia Hidden P waves Irregular Narrow QRS Normal Axis Short PR Change in rhythm Junctional escape Multiple rhythms Sinus arrhythmia Sinus bradycardia Dr Smith's ECG Blog CC BY-NC
What is the Rhythm? 29505

This ECG is from a young man who presented shortly after a 45 min episode of palpitations, shortness of breath, chest pressure and presyncope. He was an athlete.

This ECG shows marked sinus bradycardia with AV dissociation by default (not AV block) with junctional escape beats.

In the ECGquest archives, this ECG has been tagged with: - 12-Lead Incorrect Machine Interpretation Inverted P waves Narrow QRS Retrograde P waves Short PR Accelerated junctional rhythm Dr Smith's ECG Blog CC BY-NC
What is going on here?? (The computer called it “STEMI” and “Intraventricular Conduction Delay”!!) 29501
In the ECGquest archives, this ECG has been tagged with: - Chest pain 12-Lead Bradycardia Changing PR interval Narrow QRS Normal P waves Short PR Junctional escape Sinus arrhythmia Sinus bradycardia ECG Interpretation CC-BY-NC-SA
ECG Blog #159 (Bradycardia – AV Block – AV Dissociation – Junctional) 28946
In the ECGquest archives, this ECG has been tagged with: - Chest pain Dyspnoea 12-Lead Deeply inverted T waves Short PR Takotsubo cardiomyopathy Dr Smith's ECG Blog CC BY-NC
A 60 year old patient with large T-wave inversions 27554

This ECG is from a woman in her 60s who presented with intermittent chest pain and dyspnoea for the past day, on a background of stage IV lung cancer.

In the ECGquest archives, this ECG has been tagged with: - Dyspnoea 12-Lead Delta wave Short PR Wolff Parkinson White syndrome Dr Smith's ECG Blog CC BY-NC
12 Year Old Asthmatic with Intermittent Dyspnea Unresponsive to Albuterol—What is it, and Why Now? 26163

This ECG is from a 12 year old girl with a history of mild intermittent asthma who presented with a week of worsening shortness of breath. Her usual nebuliser treatments had not been working. The shortness of breath was occurring intermittently, with no apparent trigger, and these episodes were increasing in frequency. There was no wheeze or cough.

In the ECGquest archives, this ECG has been tagged with: - Palpitations 12-Lead Inverted P waves Narrow QRS Normal Axis Normal rate Short PR Accelerated junctional rhythm ECG of the Week CC-BY-NC-SA
ECG of the Week – 30th April 2018 – Interpretation 19559

This ECG is from a man in his 70s who presented after an episode of palpitations at home. He had a past history of paroxysmal atrial fibrillation, CABG, diabetes and had undergone a MAZE procedure in the last 12 months.

In the ECGquest archives, this ECG has been tagged with: - Dizziness Palpitations 12-Lead Standard Calibration Delta wave Normal Axis Normal P waves Short PR Wide QRS Wolff Parkinson White syndrome ECG of the Week CC-BY-NC-SA
ECG of the Week – 12th February 2018 – Interpretation 17974

This ECG is from a 12 yr old male who presented to the Emergency Department following an episode of palpitations and near-syncope. He had no known past medical history.

In the ECGquest archives, this ECG has been tagged with: - Syncope 12-Lead Standard Calibration Short PR Junctional Rhythms Dr Smith's ECG Blog CC BY-NC
Syncope and Prehospital Cath Lab Activation for Posterior STEMI 17927
In the ECGquest archives, this ECG has been tagged with: - 12-Lead Normal Axis Normal P waves Short PR Wide QRS Wide complex tachycardia LBBB ECG of the Week CC-BY-NC-SA
ECG of the Week – 1st January 2018 – Interpretation 2 16765

This ECG is from a woman in her 20s with a known history of pre-excitation and prior ablation.