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Fig. 1 | BMC Cardiovascular Disorders

Fig. 1

From: Cryoballoon ablation for paroxysmal atrial fibrillation in a case of persistent left superior vena cava

Fig. 1

Recordings of the surface electrocardiogram (above) and intracardiac electrocardiogram (below). Intracardiac recordings of a quadripolar ablation catheter (bipolar distal: RVAd; proximal: RVAp) and recordings of a spiral catheter (PV 1,2 to PV 7,8). Both catheters are located in positions similar to those shown in Fig. 2. The first (1) and second (2) beats show activation during sinus rhythm (SR). The third (3) to last (7) beats correspond to AF, and in these beats, the activation of PV 3,4 and PV 4,5 likely occurs first

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BMC Cardiovascular Disorders

ISSN: 1471-2261

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