scholarly journals Tachycardia cycle length alternans caused by alternate conduction velocity on the slow conduction zone in a postoperative scar‐related atrial tachycardia

2019 ◽  
Vol 35 (3) ◽  
pp. 558-561
Author(s):  
Chen Su ◽  
Menghui Liu ◽  
Yuedong Ma ◽  
Lichun Wang
Keyword(s):  
Conduction Velocity ◽  
Cycle Length ◽  
Atrial Tachycardia ◽  
Slow Conduction ◽  
Conduction Zone ◽  
Postoperative Scar

scholarly journals Adenosine-sensitive atrial tachycardia originating from the para-Hisian region with the entrance of a slow conduction zone at the noncoronary aortic sinus

2020 ◽  
Vol 6 (7) ◽  
pp. 448-452
Author(s):  
Satoshi Sakai ◽  
Hajime Fujimoto ◽  
Takehito Nakai ◽  
Naofumi Doi ◽  
Megumi Suzuki
Keyword(s):  
Atrial Tachycardia ◽  
Aortic Sinus ◽  
Slow Conduction ◽  
Conduction Zone

scholarly journals Verapamil-sensitive atrial tachycardia with a slow conduction zone near the noncoronary aortic sinus and His bundle

2017 ◽  
Vol 5 (10) ◽  
pp. 1623-1627
Author(s):  
Osamu Inaba ◽  
Yasutoshi Nagata ◽  
Yasuteru Yamauchi ◽  
Takamichi Miyamoto ◽  
Masahiko Goya ◽  
...  
Keyword(s):  
Atrial Tachycardia ◽  
Aortic Sinus ◽  
His Bundle ◽  
Slow Conduction ◽  
Conduction Zone

Characterization of Low Right Atrial Isthmus as the Slow Conduction Zone and Pharmacological Target in Typical Atrial Flutter

Circulation ◽  
1997 ◽  
Vol 96 (8) ◽  
pp. 2601-2611 ◽  
Author(s):  
Ching-Tai Tai ◽  
Shih-Ann Chen ◽  
Chern-En Chiang ◽  
Shih-Huang Lee ◽  
Kwo-Chang Ueng ◽  
...  
Keyword(s):  
Atrial Flutter ◽  
Right Atrial ◽  
Slow Conduction ◽  
Typical Atrial Flutter ◽  
Pharmacological Target ◽  
Conduction Zone

scholarly journals P1151Structural remodeling and conduction velocity dynamics in the human left atrium: relationship with reentrant mechanisms sustaining atrial tachycardia and atrial fibrillation

EP Europace ◽  
2018 ◽  
Vol 20 (suppl_1) ◽  
pp. i219-i219
Author(s):  
S Honarbakhsh ◽  
R J Schilling ◽  
M Orini ◽  
R Providencia ◽  
E Keating ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Left Atrium ◽  
Conduction Velocity ◽  
Atrial Tachycardia

scholarly journals Atrial Tachycardia With Widely-Split P Waves may Mimic a Distinct Faster Atrial Tachycardia With Half the Cycle Length of the Actual P-P Interval

2008 ◽  
Vol 72 (8) ◽  
pp. 1381-1384
Author(s):  
Takumi Yamada ◽  
Harish Doppalapudi ◽  
H. Thomas McElderry ◽  
G. Neal Kay
Keyword(s):  
Cycle Length ◽  
Atrial Tachycardia ◽  
P Waves

scholarly journals Termination of atrial fibrillation during pharmacological cardioversion in the goat requires inter-atrial synchronisation of conduction

EP Europace ◽  
2021 ◽  
Vol 23 (Supplement_3) ◽  
Author(s):  
V Sobota ◽  
A Van Hunnik ◽  
S Zeemering ◽  
G Gatta ◽  
D Opacic ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Sinus Rhythm ◽  
Left Atrium ◽  
Conduction Velocity ◽  
Right Atrium ◽  
Path Length ◽  
Cycle Length ◽  
Final Phase ◽  
Periodic Activity ◽  
Bachmann’S Bundle

Abstract Funding Acknowledgements Type of funding sources: Public grant(s) – EU funding. Main funding source(s): ITN Networks PersonalizeAF: Personalized Therapies for Atrial Fibrillation. A Translational Approach, No. 860974; CATCH ME: Characterizing Atrial fibrillation by Translating its Causes into Health Modifiers in the Elderly, No. 633196; MAESTRIA: Machine Learning and Artificial Intelligence for Early Detection of Stroke and Atrial Fibrillation, No. 965286; AFib-TrainNet: EU Training Network on Novel Targets and Methods in Atrial Fibrillation, No. 675351 Netherlands Heart Foundation: CVON2014-09, RACE V Reappraisal of Atrial Fibrillation: Interaction between hyperCoagulability, Electrical remodeling, and Vascular Destabilization in the Progression of Atrial Fibrillation Background Few studies report on mechanisms leading to termination of atrial fibrillation (AF). Purpose To characterise electrophysiological parameters and conduction patterns during the transition from AF to sinus rhythm under various conditions of AF termination. Methods A retrospective evaluation of 6 goat studies was performed. AF was maintained for 3-4 weeks in 29 animals. Four animals were in SR. Unipolar electrograms were acquired with one 249-electrode array/atrium. Pharmacological termination of AF was evoked by various drugs; AP14145 (n = 5), PA6 (n = 7), XAF-1407 (n = 9) vernakalant (n = 8). In animals with sinus rhythm, AF was acutely induced and terminated spontaneously. Baseline AF and ≤3 recordings of the last 10 seconds preceding AF termination were analysed. Intervals with temporal continuous and periodic activity were distinguished in the recordings. AF cycle length (AFCL), conduction velocity and path length were determined for each interval. Results In total, 85 AF terminations were recorded. Switches between temporal continuous and periodic activity were seen frequently during AF. However, termination of AF was always preceded by a phase of periodic activity (PA). The final phase of PA persisted for a median number of 21 [IQR 10-28] cycles in the left atrium and somewhat shorter in the right atrium, Table 1. This final phase of PA was accompanied by a profound bi-atrial increase of AFCL, conduction velocity and path length and a disappearance of inter-atrial cycle length differences. Equipotent changes were not observed in the preceding PAs. During the final AF beats, the number of wave fronts were low, 1 or 2. Interestingly, 92% of the patterns during the last beats of AF involved the Bachmann’s bundle as main source of atrial conduction. Conclusion AF termination is preceded by an increased organisation of fibrillatory conduction, associated with abrupt prolongation of the path length. Propagation in atrial free walls regularly originated from the Bachmann’s bundle. These findings suggest that AF termination was not a random process but follows common spatiotemporal patterns. Final period of temporal organisation Left atrium Right atrium Final PA start Final PA end Final PA start Final PA end Af cycle length (ms) 163 ± 37 204 ± 50* 146 ± 44 207 ± 49* Conduction velocity (cm/s) 77 ± 15 96 ± 25* 83 ± 20 103 ± 24* Path Length (cm) 12.2 ± 2.7 19.3 ± 6.3* 12.0 ± 4.1 21.2 ± 6.4* Length of final periodic activity (beats) NA 21 [IQR 10-28] NA 15 [IQR 10- 25] Electrophysiological changes during the final period periodic activity (PA). Wilcoxon signed rank test. *p <0.05NA= not available

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