CATHETER ABLATION OF ATRIAL-FLUTTER USING RADIOFREQUENCY ENERGY

[摘要] Sixteen patients' with type I atrial flutter underwent an attempt at radiofrequency catheter able tion (8 women, 8 men? mean age 53 +/- 11 years). The primary criterion used to identify sites for radiofrequency energy delivery was the identification tion of a fractionated electrogram. Radiofrequency energy was delivered for 20 to 30 seconds. Radiofrequency catheter ablation was acutely successful in 13 patients and unsuccessful in 3. During a mean follow-up of 10 +/- 4 months, 9 of 13 patients with a successful acute result (69%) remained free of recurrent atrial flutter or atrial fibrillation. The ability to induce nonclinical types of atrial flutter was associated with an unsuccessful outcome. a greater proportion of electrograms recorded at successful sites demonstrated electrogram gram stability compared with unsuccessful able tion sites. None of the electrograms recorded at successful ablation sites were fractionated or had a double potential. This study demonstrates that radiofrequency catheter ablation of type I atrial flutter can be achieved safely.

[发布日期] 1994-02-15