Ultra-high resolution mapping of reverse typical atrial flutter: electrophysiological properties of a right atrial posterior wall and interatrial septum activation pattern.

Journal of Interventional Cardiac Electrophysiology : an International Journal of Arrhythmias and Pacing
Takayuki SekiharaHiroshi Tada

Abstract

We aimed to elucidate the right atrial posterior wall (RAPW) and interatrial septum (IAS) conduction pattern during reverse typical atrial flutter (clockwise AFL: CW-AFL). This study included 30 patients who underwent catheter ablation of CW-AFL (n = 11) and counter-clockwise AFL (CCW-AFL; n = 19) using an ultra-high resolution mapping system. RAPW transverse conduction block was evaluated by the conduction pattern on propagation maps and double potentials separated by an isoelectric line. The degree of blockade was evaluated by the %blockade, which was calculated by the length of the blocked area divided by the RAPW length. IAS activation patterns were also investigated dependent on the propagation map. The average %blockade of the RAPW was significantly smaller in patients with CW-AFL than those with CCW-AFL (25 [3-74]% vs. 67 [57-75]%, p < 0.05). CW-AFL patients exhibited 3 different RAPW conduction patterns: (1) a complete blockade pattern (3 patients), (2) moderate (> 25% blockade) blockade pattern (2 patients), and (3) little (< 25% blockade) blockade pattern (6 patients). In contrast, the little blockade pattern was not observed in CCW-AFL patients. Of 11 CW-AFL patients, 4, including all patients with an RAPW complete b...Continue Reading

References

Nov 1, 1996·Journal of Cardiovascular Electrophysiology·J E OlginM D Lesh
Feb 1, 1997·Journal of the American College of Cardiology·J E OlginM D Lesh
Apr 29, 1998·Journal of Cardiovascular Electrophysiology·F G CosíoH D González
Aug 10, 1999·Journal of the American College of Cardiology·B SchumacherB Lüderitz
Jun 27, 2001·Circulation·Y YangM M Scheinman
Oct 28, 2003·Circulation Journal : Official Journal of the Japanese Circulation Society·Akihiko IshidaMitsuhiro Yokoyama
Jun 4, 2004·Journal of Cardiovascular Electrophysiology·Akira FujikiHiroshi Inoue
Apr 26, 2007·Circulation Journal : Official Journal of the Japanese Circulation Society·Yasuo OkumuraSatoshi Saito
Oct 7, 2008·Pacing and Clinical Electrophysiology : PACE·Koji FukuzawaKen-Ichi Hirata

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