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. 2019 Apr;16(4):362–377. doi: 10.11909/j.issn.1671-5411.2019.04.008

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Institute of Geriatric Cardiology

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Figure 15. — (A): Flow chart shows algorithm for differentiation of inferior axis VA into papillary, fascicular, or mitral annular arrhythmia based on QRS duration and positive precordial concordance; (B): Flow chart shows algorithm for differentiation of superior axis VA into papillary, fascicular, or mitral annular arrhythmia based on QRS morphology in leads V1 and V5. VA: ventricular arrhythmia.