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Adenosine insensitive “pseudo antidromic” atrioventricular re-entry tachycardia: The Duodromic tachycardia
  • +2
  • Inês Almeida,
  • Bruno Valente,
  • Guilherme Portugal,
  • Pedro Silva Cunha,
  • Mario Oliveira
Inês Almeida
Centro Hospitalar Barreiro Montijo EPE
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Bruno Valente
Hospital de Santa Marta
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Guilherme Portugal
Hospital de Santa Marta
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Pedro Silva Cunha
Hospital de Santa Marta
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Mario Oliveira
Hospital de Santa Marta
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Abstract

Manifest AP on the electrocardiogram (ECG) predispose patients to atrioventricular reentry tachycardia, atrial fibrillation (AF), malignant arrythmias and sudden cardiac death. [1,2] The authors report a case of a male patient admitted to the emergency room (ER) with a wide QRS complex tachycardia with no response to antiarrhythmic therapy with adenosine. The arrhythmia terminated with amiodarone perfusion and basal ECG showed ventricular pre-excitation. An electrophysiologic study (EPS) was performed diagnosing two different accessory pathways (AP) which were successfully ablated. However, 6 months later the ECG showed recurrence of the ventricular preexcitation. A new EPS was proposed with successful ablation of a third AP.