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Figure 3 Left anterior oblique of three-dimensional anatomic map for Patient #1. The His bundle recording site (His) superior vena cava (SVC), inferior vena cava (IVC), coronary sinus (CS), and pulmonary veins are noted. The biatrial map shows earliest left septal activation with passive spread to both left and right atrium. LIPV = left inferior pulmonary vein; LUPV = left upper pulmonary vein; RUPV = right upper pulmonary vein.
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