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- Title
Laser catheter coagulation of atrial myocardium for ablation of atrioventricular nodal reentrant tachycardia.
- Authors
Weber, H. P.; Kaltenbrunner, W.; Heinze, A.; Steinbach, K.
- Abstract
A new technique for ablation of atrioventricular nodal reentrant tachycardia, using catheter-directed continuous wave Nd-YAG laser light, 1064 nm, via a novel pin-electrode laser catheter, was applied in 10 patients aged 15–63 years (mean 43 years). A total of 22 laser pulses, 1–5 per patient, at 20 or 30 W, of 10–45 s (mean 27 s) were aimed at the postero-inferior aspect of the tricuspid annulus.In all patients the tachycardia was rendered non-inducible at baseline as well as during orciprenaline administration. The amplitudes of the local atrial potentials diminished from 2·0±0·5 before to 0·4±0·4 mV after ablation, atrio-His intervals increased from 73±7 to 157±36 ms. Anterograde atrioventricular nodal refractory periods (212+31 vs 238+31 ms) and Wenckebach rate (174±8 vs 167±8 beats.min−1) did not change significantly (P>0·05) There were no complications or recurrent arrhythmias in a follow-up of 12–35 (mean 27) months.Anatomically guided laser catheter coagulation of the postero-inferior aspect of the tricuspid valve ring is a safe and effective method for the cure of patients with common atrioventricular reentrant tachycardia.
- Publication
European Heart Journal, 1997, Vol 18, Issue 3, p487
- ISSN
0195-668X
- Publication type
Article
- DOI
10.1093/oxfordjournals.eurheartj.a015270