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Fig. 2 | BMC Cardiovascular Disorders

Fig. 2

From: Origins location of the outflow tract ventricular arrhythmias exhibiting qrS pattern or QS pattern with a notch on the descending limb in lead V1

Fig. 2

a. Transition index of the precordial leads is 3.5–2.5 = 1 (greater than 0), lead I had the positive wave of m -pattern, indicating the origin of of RVOT; b. Transition index of the precordial leads is 2–3.5 = −1.5 (less than 0), V2 had R wave with a duration ratio > 50%, and an amplitude ratio > 30%, indicating the ASC origin, lead I had the Rs pattern, eventually it was identified as having the L-RCC origin; c. Transition index of the precordial leads is 2.5–3.5 = −1 (less than 0), V2 had a R wave with a duration ratio > 50% and an amplitude ratio > 30%, combined with lead I which showed R pattern positive wave, eventually it was identified as having the RCC origin

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BMC Cardiovascular Disorders

ISSN: 1471-2261

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