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  • Title: [The pharmacological treatment of supraventricular atrioventricular nodal reentry or accessory pathway reentry tachycardias: the usefulness of transesophageal electrophysiological study in the selection of therapy].
    Author: Sarubbi B, Ducceschi V, Esposito R, Briglia N, Manzo G, Mayer MS, Santangelo L, Iacono A.
    Journal: Cardiologia; 1996 Jun; 41(6):543-9. PubMed ID: 8766417.
    Abstract:
    Transesophageal atrial pacing is a diagnostic and therapeutic tool in patients with supraventricular reciprocating tachycardia (SVRT). The aim of the present study was to evaluate the effectiveness of transesophageal atrial pacing in the selection of the chronic treatment of SVRT. Between June 1993 and March 1995 we have performed transesophageal atrial pacing in 44 patients affected by atrioventricular nodal reentry tachycardia (AVNRT: n = 28) or atrioventricular reentrant tachycardia (AVRT) using a concealed or manifest bypass tract (n = 16). After a basal (free drug state) transesophageal atrial pacing, we performed serial electropharmacological tests during chronic treatment with sotalol (160 mg/die), flecainide (200 mg/die) and propafenone (450 mg/die). At the end of these tests, the patients were finally discharged with the drug that allowed a more difficult induction or a wider cycle length, and that showed a better clinical tolerance. At the end of the electropharmacological tests 53.6% of the patients affected by AVNRT were discharged with sotalol, 17.8% with propafenone and 28.6% with flecainide. The follow-up of these 28 patients is 11.4 +/- 1.7 months. In the 79.2% of the patients the drug is still effective (absence of whatever episode of SVRT in the follow-up period). In the AVRT group, at the end of the electropharmacological tests, 25% of the patients were discharged with sotalol, 6.25% with propafenone, and 68.75% with flecainide. The follow-up of these 16 patients is 11.7 +/- 1.8 months. In the 78.6% of the patients the drug is still effective (absence of episode of SVRT in the follow-up period).
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