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Fig. 2 | BMC Cardiovascular Disorders

Fig. 2

From: Multiple focal and macroreentrant left atrial tachycardias originating from a spontaneous scar at the contiguous aorta-left atrium area in a patient with hypertrophic cardiomyopathy: a case report

Fig. 2

Activation mapping during multiple atrial tachycardias: atrial tachycardia (AT)1 (a), AT2 (b), AT3 (c) and AT4 (d). The activation patterns of AT1 and AT4 showed macroreentry. AT1 and AT4 were terminated by performing radiofrequency ablation at the red circle where a long-duration, fractionated potential was recorded. The white circles represent the unsuccessful site for terminating AT. AT2 and AT3, which had a centrifugal pattern, were terminated at the early activation site where the local potentials preceded the P-wave onset. Abl-d = distal ablation electrode; Abl-p = proximal ablation electrode; CS-p = proximal coronary sinus electrode; CS-d = distal coronary sinus electrode

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