Successful Ablation for Atrial Tachycardia Originated from Sinus Venosa with Tachycardia-Induced Cardiomyopathy

Figure 2

(a) Activation mapping in right atrium revealed that the earliest activation site was sinus venosa. (b) The activation site was moved to the high right atrium and down along the crista terminalis. (c) Virtual unipolar electrogram on the crista terminalis. Red arrow = traces of the movement of activation site; yellow line = crista terminalis; RF = ablation catheter (crista terminalis).

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