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Europace 2003 5(3):225-229; doi:10.1016/S1099-5129(03)00037-0
© 2003 by European Society of Cardiology
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Clinical and electrophysiological characteristics in patients with atrioventricular reentrant and atrioventricular nodal reentrant tachycardia

N. Bottoni1, C. Tomasi1, P. Donateo2, G. Lolli1, N. Muią1, F. Croci2, D. Oddone2, C. Menozzi1 and M. Brignole2

1Unitą Operativa di Cardiologia Interventistica, Dipartimento di Cardiologia, Azienda Ospedaliera S. Maria Nuova Reggio Emilia, Italy; 2Centro Aritmologico, Dipartimento di Cardiologia, Ospedali del Tigullio Lavagna, Italy

AIM: To compare clinical, electrophysiological characteristics and transcatheter ablation results between two groups of patients, one with atrioventricular reentrant tachycardia (AVRT) and the other with atrioventricular nodal reentrant tachycardia (AVNRT).

METHODS: The study population consisted of 94 consecutive patients who underwent endocavitary electrophysiological study and radiofrequency (RF) ablation: 46 patients had AVRT due to an accessory pathway with only retrograde conduction while 48 patients had AVNRT.

RESULTS: In relation to general and clinical characteristics, differences between the two groups emerged regarding the age of symptom onset (25±16 vs 37±17 years, p=0.001), the prevalence of heart disease (8 vs 31%, p=0.001) and the correct diagnosis on surface ECG (50 vs 79%, p=0.001). Clinical presentation was quite similar apart from a higher prevalence of fatigue and sweating in the AVNRT group. Transcatheter RF ablation therapy results were similar.

CONCLUSIONS: Patients with AVRT have a lower mean age at arrhythmia symptom onset compared with those with AVNRT and have fewer associated cardiac abnormalities. Clinical presentation is quite similar as well as their outcome after ablation. A correct diagnosis by standard ECG is more frequent in AVNRT.

Key Words: Paroxysmal supraventricular tachycardia, cardiac electrophysiology, transcatheter radiofrequency ablation, atrioventricular reentrant tachycardia, atrioventricular nodal reentrant tachycardia

Correspondence: Nicola Bottoni, Unitą Operativa di Cardiologia Interventistica, Azienda Ospedaliera S. Maria Nuova, V. Risorgimento 80, Reggio Emilia, Italy. Tel: +39-0522-296574; Fax: +39-0522-296288; E-mail: bottoni.nicola{at}asmn.re.it


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