Parasystole is the presence of two competing rhythms, usually one is supraventricular and the other junctional or ventricular. Fusion complexes can occur when the two rhythms collide.

See also: Other Rhythms

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In the ECGquest archives, this ECG has been tagged with: - 12-Lead Multiple rhythms Parasystole ECGpedia CC-BY-NC-SA

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