Accelerated Idioventricular Rhythm

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  • Accelerated idioventricular rhythm (AIVR) is a ventricular rhythm consisting of three or more consecutive monomorphic beats, with gradual onset and gradual termination. It can rarely manifest in patients with completely normal hearts or with structural heart disease. It is usually seen during acute myocardial infarction reperfusion.

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    Accelerated idioventricular rhythm (AIVR) is a ventricular rhythm consisting of three or more consecutive monomorphic beats, with gradual onset and gradual termination. It can rarely manifest in patients with completely normal hearts or with structural heart disease. It is usually seen during acute myocardial infarction reperfusion.

    AIVR is usually a benign and well-tolerated arrhythmia. Most of the cases will require no treatment, but in rare cases, such as sustained or incessant AIVR or when AV dissociation induces syncope, the risk of sudden death is higher and the arrhythmia should be treated.

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