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Fig. 2 | International Journal of Arrhythmia

Fig. 2

From: Evaluation of five algorithms in predicting the sublocalisation of right ventricular outflow tract arrhythmia (RVOTA) when compared to 3D electroanatomical mapping origin

Fig. 2

Following Dixit and Zhang algorithms, anterior, mid and posterior localisation (from left to right panel) in the RVOT can be established based on the differences of QRS morphology in lead I and AVL. QRS polarity in lead aVL was assessed to determine the anterior or posterior arrhythmia locations. In the left panel, QS aspect in both lead I and AVL leads suggests an anterior location, while in the mid panel a R/S ratio < 1 and low R wave amplitude in I and AVL leads favours a mid to anterior location of the PVC. In the right panel, a R/S ratio > 1 in lead I suggests a posterior origin

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International Journal of Arrhythmia

ISSN: 2466-1171

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