Fusion beat
Encyclopedia
Fusion beat and Capture beat.
In some cases of VT
with AV dissociation the SA node may transiently "capture" the ventricles
, producing a capture beat, which has a normal QRS duration, or a fusion beat, in which the sinus
and ventricular beats coincide to produce a hybrid complex.
In some cases of VT
Ventricular tachycardia
Ventricular tachycardia is a tachycardia, or fast heart rhythm, that originates in one of the ventricles of the heart...
with AV dissociation the SA node may transiently "capture" the ventricles
Ventricle (heart)
In the heart, a ventricle is one of two large chambers that collect and expel blood received from an atrium towards the peripheral beds within the body and lungs. The Atria primes the Pump...
, producing a capture beat, which has a normal QRS duration, or a fusion beat, in which the sinus
Sinus rhythm
In medicine, sinus rhythm is the normal beating of the heart, as measured by an electrocardiogram . It has certain generic features that serve as hallmarks for comparison with normal ECGs.- ECG structure :...
and ventricular beats coincide to produce a hybrid complex.