Key result
Cavotricuspid isthmus ablation for atrial flutter unmasked a severe underlying Purkinje disease, resulting in a concurrent tachycardia- and pause-dependent paroxysmal atrioventricular block.
Case Report (n=1)
Highlights a rare complication of complete atrioventricular block following cavotricuspid isthmus ablation for atrial flutter.
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AVB can occur after CTI ablation; this case extends known complications but leaves practice unchanged.
Catheter ablation of the cavotricuspid isthmus (CTI) using radiofrequency energy is currently the first line therapy for symptomatic right atrial flutter (AFL).1 CTI ablation is associated with a 92%–97% success rate and a very low complication rate (<1%) including atrioventricular block (AVB) (0.4%).2 We report an unusual case of complete AVB occurring after AFL interruption by ablation.
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Georger et al. (2015) conducted a case report in Atrial flutter (n=1). Cavotricuspid isthmus (CTI) ablation was evaluated on Complete atrioventricular block. Cavotricuspid isthmus ablation for atrial flutter unmasked a severe underlying Purkinje disease, resulting in a concurrent tachycardia- and pause-dependent paroxysmal atrioventricular block.
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