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. 2019 May;8(2):131–137. doi: 10.15420/aer.2019.17.2

Figure 6: Line of Block after Ablation of the Lateral Right Atrium from Atriotomy Scar to Inferior Vena Cava.

Figure 6:

A and B: Fluoroscopic images of multipolar catheter in the lateral right atrium. C: Line of block (double line) is verified by pacing from either side of the ablation line. The location of the atriotomy is depicted by the white line and ablation lesions in red. Pacing anterior to the line (from RA 1–2) results in late activation of electrograms on the other side of the line with cranio-caudal activation. D: Similarly, pacing from posterior to the line (from RA 11–12) results in late activation anterior to the line (RA 1–2). CS = coronary sinus; dist = distal; HB = bundle of His; LA = left atrium; LAO = left anterior oblique; prox = proximal; RAO = right anterior oblique.