![]() Role of transisthmus conduction intervals in predicting bidirectional block after ablation of typical atrial flutter. Oral H, Sticherling C, Tada H, Chough SP, Baker RL, Wasmer K, et al. Usefulness of unipolar electrograms to detect isthmus block after radiofrequency ablation of typical atrial flutter. Villacastin J, Almendral J, Arenal A, Castellano NP, Gonzalez S, Ortiz M, et al. Differential pacing for distinguishing block from persistent conduction through an ablation line. Shah D, Haissaguerre M, Takahashi A, Jais P, Hocini M, Clementy J. Further insights into the various types of isthmus block: application to ablation during sinus rhythm. Radiofrequency catheter ablation of atrial flutter. Poty H, Saoudi N, Nair M, Anselme F, Letac B. Electrophysiological effects of catheter ablation of inferior vena cava-tricuspid annulus isthmus in common atrial flutter. 2004 43:1466–72.Ĭauchemez B, Haissaguerre M, Fischer B, Thomas O, Clementy J, Coumel P. Radiofrequency catheter ablation of type 1 atrial flutter using large-tip 8- or 10-mm electrode catheters and a high-output radiofrequency energy generator: results of a multicenter safety and efficacy study. 1995 92:1389–92.įeld G, Wharton M, Plumb V, Daoud E, Friehling T, Epstein L. Prediction of late success by electrophysiological criteria. Radiofrequency catheter ablation of type 1 atrial flutter. Poty H, Saoudi N, Abdel Aziz A, Nair M, Letac B. Radiofrequency catheter ablation of common atrial flutter in 200 patients. 1995 25:1365–72.įischer B, Jais P, Shah D, Chouairi S, Haissaguerre M, Garrigues S, et al. Radiofrequency catheter ablation of common atrial flutter in 80 patients. 2001 38:750–5.įischer B, Haissaguerre M, Garrigues S, Poquet F, Gencel L, Clementy J, et al. Double potentials along the ablation line as a guide to radiofrequency ablation of typical atrial flutter. Tada H, Oral H, Sticherling C, Chough SP, Baker RL, Wasmer K, et al. Efficacy of an anatomically guided approach. Radiofrequency ablation of atrial flutter. Kirkorian G, Moncada E, Chevalier P, Canu G, Claudel JP, Bellon C, et al. Randomized comparison of two targets in typical atrial flutter ablation. 1993 71:705–9.Īnselme F, Klug D, Scanu P, Poty H, Lacroix D, Kacet S, et al. Radiofrequency ablation of the inferior vena cava-tricuspid valve isthmus in common atrial flutter. 1992 86:1233–40.Ĭosio FG, Lopez-Gil M, Goicolea A, Arribas F, Barroso JL. Identification of a critical zone in the reentrant circuit by endocardial mapping techniques. Radiofrequency catheter ablation for the treatment of human type 1 atrial flutter. Conclusionsĭuring pacing from the CS, the temporal relationship between the P wave in lead V 1 and A 2 is a simple and reliable indicator of complete block during RFA of CTI-AFL.įeld GK, Fleck RP, Chen PS, Boyce K, Bahnson TD, Stein JB, et al. In the validation set, the positive and negative predictive values of P peak-A 2 ≥ 20 ms or P end-A 2 ≥ 0 ms were 100 and 96%, respectively. P peak-A 2 ≥ 20 ms and P end-A 2 ≥ 0 ms predicted CTI block with 98% sensitivity and 95% specificity and 96% sensitivity and 100% specificity, respectively. The mean P peak-A 2 and P end-A 2 immediately before complete block were − 15☒4 and − 39☒3 ms compared to 49 ± 17 and 21 ± 16 ms after CTI block ( P < 0.0001). In the next 25 patients (validation set), P peak-A 2 and P end-A 2 intervals were prospectively assessed to determine CTI block. During pacing from the coronary sinus (CS), the intervals from the peak of the P wave (P peak) in lead V 1 to the second component of the local atrial electrogram (A 2) along the ablation line (P peak-A 2) and from the end of the P wave (P end) to A 2 (P end-A 2) were investigated before and after complete block in the first 100 patients (training set). RFA of CTI was performed in 125 patients (age 63 ± 11 years). The purpose of this study is to evaluate the utility of the temporal relationship between the P wave and the local atrial electrograms in determining complete CTI block. The endpoint for radiofrequency catheter ablation (RFA) of cavo-tricuspid isthmus (CTI)-dependent atrial flutter (AFL) is complete conduction block along the CTI.
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