scholarly journals Right Atrial Volume Calculated by Multi-detector Computed Tomography: Useful Predictor of Atrial Fibrillation Recurrence after Pulmonary Vein Catheter Ablation

2010 ◽  
Vol 22 (2) ◽  
pp. 73-83
Author(s):  
Kyouichi KANEKO ◽  
Yasushi AKUTSU ◽  
Yusuke KODAMA ◽  
Hui-Ling LI ◽  
Takashi HASHIZUME ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Atrial Fibrillation ◽  
Catheter Ablation ◽  
Pulmonary Vein ◽  
Right Atrial ◽  
Atrial Fibrillation Recurrence ◽  
Atrial Volume ◽  
Vein Catheter ◽  
Right Atrial Volume ◽  
Multi Detector Computed Tomography

Limitations of Dormant Conduction as a Predictor of Atrial Fibrillation Recurrence and Pulmonary Vein Reconnection after Catheter Ablation

2015 ◽  
Vol 38 (5) ◽  
pp. 598-607 ◽  
Author(s):  
FRANK S. LIN ◽  
JAMES E. IP ◽  
STEVEN M. MARKOWITZ ◽  
CHRISTOPHER F. LIU ◽  
GEORGE THOMAS ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Catheter Ablation ◽  
Pulmonary Vein ◽  
Atrial Fibrillation Recurrence ◽  
Dormant Conduction ◽  
Pulmonary Vein Reconnection

scholarly journals P1724Left atrial volume computed by three-dimensional rotational angiography best predicts atrial fibrillation recurrence after pulmonary vein isolation

EP Europace ◽  
2017 ◽  
Vol 19 (suppl_3) ◽  
pp. iii373-iii373
Author(s):  
T. Strisciuglio ◽  
SC. Chatzikyriakou ◽  
GDG Di Gioia ◽  
ES. Silva ◽  
EB. Barbato ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Pulmonary Vein ◽  
Pulmonary Vein Isolation ◽  
Three Dimensional ◽  
Atrial Fibrillation Recurrence ◽  
Rotational Angiography ◽  
Atrial Volume

P5432Invasive assessment by atrial volume-pressure loops of the acute changes in left atrial function induced by pulmonary vein antral isolation

2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
A Karanasos ◽  
K Toutouzas ◽  
D Tsiachris ◽  
A Kordalis ◽  
K Tyrovolas ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Catheter Ablation ◽  
Elastic Constant ◽  
Pulmonary Vein ◽  
Left Atrial ◽  
Wave Amplitude ◽  
Atrial Function ◽  
Atrial Volume ◽  
Loop Area ◽  
Booster Pump

Abstract Background Atrial volume-pressure loops are considered the best method to assess left atrium (LA) function. Changes in atrial function induced by pulmonary vein (PV) antral isolation of atrial fibrillation (AF) have not been documented thus far using this approach. Purpose We aimed to evaluate changes in LA function in patients with paroxysmal atrial fibrillation (PAF) undergoing catheter ablation by atrial volume-pressure loops. Methods Patients undergoing for the first time catheter ablation of PAF by PV antral isolation and PV-LA junction ablation, as clinically indicated, were enrolled from 2 centers. Each center enrolled consecutive patients undergoing PV antral isolation using the same method i.e. radiofrequency or cryoballoon ablation. Patients with severe mitral stenosis or regurgitation, any prosthetic valve, left atrial thrombus or severe systolic or diastolic dysfunction of the left ventricle were excluded. Before and after the procedure, all patients underwent real-time three-dimensional transthoracic echocardiogram to evaluate volume changes of the LA during an entire cardiac cycle, while simultaneously recording LA pressure by a 6F angiographic catheter following transseptal puncture. After the procedure, LA volume and pressure recordings were gated offline by ECG, and were used to plot the LA pressure as a function of LA volume, thus creating a volume-pressure loop. The A loop area is a measure of the booster pump function of the LA. The V loop area expresses the reservoir function of the LA. Pressure and volume data at the clockwise ascending limb of the volume-pressure loop were fitted to the exponential function P = bxea·V, where P = instantaneous LA pressure; V = LA volume; a is the passive elastic chamber stiffness constant (cm–3) that determines the slope of the exponential curve, and b is the elastic constant (mm Hg). Results 34 patients with PAF were analysed, 12 treated with radiofrequency ablation and 22 with cryoablation. The procedure was uneventful in all cases. Mean LA pressure, A-wave amplitude, and V-wave amplitude were all significantly increased post-procedurally (p<0.001 for all). The area of the A-loop decreased (Post: 40.69 ml·mm Hg [IQR 13.7–71.3] vs. Pre: 64.2 ml·mm Hg [IQR 30.9–86.9]; p=0.001), whereas the area of the V-loop increased (Post: 96.5 ml·mm Hg [IQR 45.1–230.5] vs. Pre: 79.2 ml·mm Hg [IQR 46.9–149.7]; p=0.016). Although the elastic constant increased (p<0.001), there was no significant difference in the passive chamber elastic constant (p=0.30). Conclusion Volume-pressure loops can assess procedural changes in LA function. Catheter ablation of AF is associated with a decrease the LA booster pump function of the LA, and in increase in the left atrial reservoir function. Moreover, there is an increase in LA pressures that is observed in the absence of change in LA stiffness.

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