Key result
Mapping strategies including P wave morphology, activation timing, and electrogram morphology can help distinguish right from left atrial origin in focal atrial tachycardias with early septal activation.
Why the study?
What are the available tools and methods to distinguish right from left atrial origin in focal atrial tachycardias demonstrating early septal activation?
What are the available tools and methods to distinguish right from left atrial origin in focal atrial tachycardias demonstrating early septal activation?
Answers are grounded in this paper and cite their sources.
This review summarizes mapping strategies to help electrophysiologists distinguish between right and left atrial origins of focal atrial tachycardias near the septum, potentially avoiding unnecessary left atrial access.
Determining the chamber of origin of focal atrial tachycardias (FATs) arising at or close to the septum might require biatrial mapping. This review focuses on the available tools and methods used to distinguish right atrial from left atrial origin before left atrial access is obtained. These include analysis of P wave morphology, assessing the timing of right atrial septal activation, the sequence of right atrial and/or biatrial activation and analysis of earliest electrogram morphology. The electroanatomical properties of the interatrial septum and coronary sinus that provide the basis for the above mentioned tools have also been briefly described.
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Vassil Traykov (2014) conducted a review in Focal atrial tachycardias (FATs) with early septal activation. Mapping strategies (P wave morphology, activation timing, electrogram morphology) was evaluated. Mapping strategies including P wave morphology, activation timing, and electrogram morphology can help distinguish right from left atrial origin in focal atrial tachycardias with early septal activation.
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