Fusion beat

fusion beat may occur during a ventricular arrhythmia (e.g. VT) where competing impulses from the sinus node and the ventricles combine to make a single QRS complex. The new fused QRS complex looks different compared to either the normal sinus rhythm or the ventricular rhythm.

See also: QRS shapes

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ECG Library (11)

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In the ECGquest archives, this ECG has been tagged with: - 12-Lead Fusion beat Normal rate Regular Right Axis Deviation Wide QRS Accelerated idioventricular rhythm Acute Anterior MI Dr Smith's ECG Blog CC BY-NC
Chest pain and precordial ST depression which resolve, followed by a wide complex rhythm. T= 2h 9 min
In the ECGquest archives, this ECG has been tagged with: - 12-Lead Fusion beat Pacemaker spikes Ventricular pacemaker LITFL CC-BY-NC-SA
Ventricular paced rhythm with fusion beats
In the ECGquest archives, this ECG has been tagged with: - Palpitations Rhythm Strip Fusion beat AVNRT Change in rhythm Premature ventricular complex SVT ECG Interpretation CC-BY-NC-SA
ECG Blog #136 (AVNRT – Vagal Maneuver – PVC – Couplet – Salvo – SVT
In the ECGquest archives, this ECG has been tagged with: - Rhythm Strip Fusion beat Change in rhythm Sinus arrhythmia Ventricular tachycardia ECG Interpretation CC-BY-NC-SA
ECG Blog #133 (Aberrant Conduction – VT – Fusion – AV Dissociation – Sinus)
In the ECGquest archives, this ECG has been tagged with: - Palpitations 12-Lead Fusion beat Atrial flutter ECG Guru CC-BY-NC-SA
Atrial Flutter With 2:1 Conduction And An Aberrantly-conducted Beat
In the ECGquest archives, this ECG has been tagged with: - Palpitations Rhythm Strip Fusion beat Change in rhythm SVT ECG Guru CC-BY-NC-SA
Paroxysmal Supraventricular Tachycardia Converted With Adenosine
In the ECGquest archives, this ECG has been tagged with: - 12-Lead Fusion beat Left Axis Deviation Wide QRS LBBB ECG Guru CC-BY-NC-SA
Sinus Rhythm With Left Bundle Branch Block, PVCs, and Fusion Beats