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Heart. 2019 May 15. pii: heartjnl-2019-314748. doi: 10.1136/heartjnl-2019-314748. [Epub ahead of print]

Electrocardiographic landmarks of idiopathic ventricular arrhythmia origins.

Author information

1
Cardiology Department, Mitera General Hospital, Athens, Greece.
2
National Heart and Lung Institute, London, UK.
3
Mitera General Hospital, HYGEIA Group, Athens, Greece.

Abstract

Idiopathic ventricular arrhythmias occur in the absence of underlying structural heart disease and less commonly in the presence of coexistent, but mechanistically unrelated, myocardial scar. These arrhythmias originate from several anatomical sites in both ventricles, with a predilection in outflow tract structures. The 12-lead surface ECG is the initial mapping tool, which is widely used to identify their origin. Specific features can predict the site of idiopathic ventricular arrhythmias, thus differentiating right from left ventricular, as well as endocardial from epicardial origins. In this review, we aim to analyse electrocardiographic landmarks for determination of idiopathic ventricular arrhythmia sources, with specific emphasis on pertinent caveats and anatomical relationships.

KEYWORDS:

electrocardiogram; idiopathic ventricular tachycardias

Conflict of interest statement

Competing interests: None declared.

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