Key result
Temperature-controlled radiofrequency catheter ablation achieved persistent first- or third-degree AV block in 8 of 12 patients (66.7%) without impedance rise or electrode coating.
Why the study?
Does temperature-controlled radiofrequency catheter ablation achieve AV block safely in patients with medically refractory AVNRT or rapid atrial rhythms?
Population
12 patients with medically refractory atrioventricular nodal reentrant tachycardia or rapid atrial rhythms.
Design
Case_series
Follow-up
mean 8 +/- 4 months
Authors
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Hypothesis-generating for temperature-controlled ablation in refractory AVNRT; prospective studies needed before clinical adoption.
Observational (n=12)
Does temperature-controlled radiofrequency catheter ablation achieve AV block safely in patients with medically refractory AVNRT or rapid atrial rhythms?
Temperature-controlled radiofrequency ablation is a feasible technique for achieving AV block that avoids the impedance rises and coagulum formation commonly seen with constant-power applications.
Hoffmann et al. (1993) conducted an observational in Medically refractory atrioventricular nodal reentrant tachycardia (AVNRT) or rapid atrial rhythms (n=12). Temperature-controlled radiofrequency catheter ablation was evaluated on First-degree AV block in patients with AVNRT and third-degree block in patients with atrial fibrillation or flutter. Temperature-controlled radiofrequency catheter ablation achieved persistent first- or third-degree AV block in 8 of 12 patients (66.7%) without impedance rise or electrode coating.
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