Left atrial "stunning" following radiofrequency catheter ablation of chronic atrial flutter
Paul B. Sparks, MB, BSa,
Shenthar Jayaprakash, MDa,
Jitendra K. Vohra, MD, FACCa,
Harry G. Mond, MD, FACCa,
Anthony G. Yapanis, MB, BSa,
Leeanne E. Grigg, MB, BSa and
Jonathan M. Kalman, MB, BS, PhD, FACCa
a Department of Cardiology, The Royal Melbourne Hospital, and Department of Medicine, The University of Melbourne, Parkville, Victoria, Australia
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Figure 1 Mean LAA emptying velocities (centimeters per second) in AFL and in sinus rhythm immediately, 30 minutes and 3 weeks following RFA of chronic AFL. SR = sinus rhythm; vertical bars = mean ± SD.
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Figure 2 Doppler flow envelopes of LAA velocities (centimeters per second) in chronic AFL (top), in sinus rhythm immediately following AFL termination (middle) and in sinus rhythm at the 3 week follow-up assessment (bottom). Vertical axis scale (centimeters per second).
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Figure 3 Mean LAA fractional area change (%) in AFL and in sinus rhythm immediately, 30 minutes and 3 weeks following RFA of chronic AFL. SR = sinus rhythm; vertical bars = mean ± SD.
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Figure 4 Mean mitral in-flow A-wave velocities (centimeters per second) in sinus rhythm immediately, 30 minutes and 3 weeks following RFA of chronic AFL. SR = sinus rhythm; vertical bars = mean ± SD.
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Figure 5 Mean LAA emptying velocities (centimeters per second) in sinus rhythm before, immediately and 30 minutes following RFA of paroxysmal AFL demonstrating no effect due to the RF lesion itself. SR = sinus rhythm; vertical bars = mean ± SD.
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