Fusion beats

WikiDoc Resources for Fusion beats
Articles
Most recent articles on Fusion beats Most cited articles on Fusion beats Review articles on Fusion beats Articles on Fusion beats in N Eng J Med, Lancet, BMJ
Media
Powerpoint slides on Fusion beats Images of Fusion beats Photos of Fusion beats Podcasts & MP3s on Fusion beats Videos on Fusion beats
Evidence Based Medicine
Cochrane Collaboration on Fusion beats Bandolier on Fusion beats TRIP on Fusion beats
Clinical Trials
Ongoing Trials on Fusion beats at Clinical Trials.gov Trial results on Fusion beats Clinical Trials on Fusion beats at Google
Guidelines / Policies / Govt
US National Guidelines Clearinghouse on Fusion beats NICE Guidance on Fusion beats NHS PRODIGY Guidance FDA on Fusion beats CDC on Fusion beats
Books
Books on Fusion beats
News
Fusion beats in the news Be alerted to news on Fusion beats News trends on Fusion beats
Commentary
Blogs on Fusion beats
Definitions
Definitions of Fusion beats
Patient Resources / Community
Patient resources on Fusion beats Discussion groups on Fusion beats Patient Handouts on Fusion beats Directions to Hospitals Treating Fusion beats Risk calculators and risk factors for Fusion beats
Healthcare Provider Resources
Symptoms of Fusion beats Causes & Risk Factors for Fusion beats Diagnostic studies for Fusion beats Treatment of Fusion beats
Continuing Medical Education (CME)
CME Programs on Fusion beats
International
Fusion beats en Espanol Fusion beats en Francais
Business
Fusion beats in the Marketplace Patents on Fusion beats
Experimental / Informatics
List of terms related to Fusion beats

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Synonyms and keywords: fusion QRS; capture beat;

Overview

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.

Electrocardiogram

In the example below, "late" (end-diastolic) PVCs are illustrated with varying degrees of fusion with normal conduction. For a fusion beat to occur the sinus P wave must successfully make its way to the ventricles to start the activation sequence, but before ventricular activation is completed by the late PCV. The resulting QRS complex resembles both the normal QRS, as well as the PVC and hence the term fusion QRS or fusion beat. The fusion beats are marked by an F in the illustration below: