Multiple rhythms

When there are multiple rhythms in one ECG this can either be from a change in rhythm or the presence of two competing rhythms at once. Two competing rhythms are also known as Parasystole.

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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 Multiple rhythms Parasystole ECGpedia CC-BY-NC-SA
Parasystole 26505

This ECG shows parasystole with two competing rhythms (one supraventricular and one ventricular rhythm).