Overview
What is accelerated idioventricular rhythm (AIVR)?
What is the pathophysiology of accelerated idioventricular rhythm (AIVR)?
What is the prevalence of accelerated idioventricular rhythm (AIVR) in the US?
What is the global prevalence of accelerated idioventricular rhythm (AIVR)?
Which patient groups have the highest prevalence of accelerated idioventricular rhythm (AIVR)?
What is the prognosis of accelerated idioventricular rhythm (AIVR)?
What is the mortality and morbidity associated with accelerated idioventricular rhythm (AIVR)?
What are the possible complications of accelerated idioventricular rhythm (AIVR)?
What is included in patient education about accelerated idioventricular rhythm (AIVR)?
Presentation
Which clinical history findings are characteristic of accelerated idioventricular rhythm (AIVR)?
Which physical findings are characteristic of accelerated idioventricular rhythm (AIVR)?
What causes accelerated idioventricular rhythm (AIVR)?
DDX
Which findings on ECG are characteristic of accelerated idioventricular rhythm (AIVR)?
How is accelerated idioventricular rhythm (AIVR) differentiated from other heart rhythms?
What are the differential diagnoses for Accelerated Idioventricular Rhythm?
Workup
What is the role of lab tests in the workup of accelerated idioventricular rhythm (AIVR)?
What is the role of imaging studies in the workup of accelerated idioventricular rhythm (AIVR)?
What is the role of ECG in the workup of accelerated idioventricular rhythm (AIVR)?
Treatment
How is accelerated idioventricular rhythm (AIVR) treated?
Which dietary modifications are used in the treatment of accelerated idioventricular rhythm (AIVR)?
Which activity modifications are used in the treatment of accelerated idioventricular rhythm (AIVR)?
How is accelerated idioventricular rhythm (AIVR) prevented?
What is included in long-term monitoring of accelerated idioventricular rhythm (AIVR)?
Medications
What is the role of medications in the treatment of accelerated idioventricular rhythm (AIVR)?
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Accelerated Idioventricular Rhythm. AIVR and sinus rhythm: AIVR starts and terminates gradually, competing with sinus rhythm. A possible ventricular fusion beat (arrow) and isoarrhythmic AV dissociation (arrowheads: sinus P waves) are present. During AIVR, ectopic ventricular rate is just faster than sinus rate. AIVR has a wide QRS morphology different from the QRS morphology in sinus rhythm.
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Accelerated Idioventricular Rhythm. AIVR in atrial fibrillation: AIVR starts and terminates gradually, competing with the ventricular capture beats (arrow) from atrial fibrillation. Ventricular fusion beat (arrowhead) is present. AIVR has a wide QRS morphology different from the QRS morphology of ventricular capture beats.
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Accelerated Idioventricular Rhythm. Complete heart block with escaped junctional rhythm: The AV dissociation in complete heart block is not isoarrhythmic AV dissociation, because the atrial rate is much faster than the escaped junctional ventricular rate.