Changes in Left Atrial Transport Function in Patients Who Maintained Sinus Rhythm After Successful Radiofrequency Catheter Ablation for Atrial Fibrillation: A 1-Year Follow-Up Multislice Computed Tomography Study

2016 ◽  
Vol 28 (2) ◽  
pp. 167-176 ◽  
Author(s):  
JIN-SEOK KIM ◽  
SUNG IL IM ◽  
SEUNG YONG SHIN ◽  
JUN HYUK KANG ◽  
JIN OH NA ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Atrial Fibrillation ◽  
Catheter Ablation ◽  
Sinus Rhythm ◽  
Left Atrial ◽  
Radiofrequency Catheter Ablation ◽  
Multislice Computed Tomography ◽  
Transport Function

scholarly journals Left Atrial Function After Radiofrequency Catheter Ablation of Atrial Fibrillation　– Can Pre-Ablation Function Predict Contractile Improvement During Follow-up? –

2015 ◽  
Vol 79 (12) ◽  
pp. 2576-2583 ◽  
Author(s):  
Marina Antolini ◽  
Alessandro Brustio ◽  
Mara Morello ◽  
Federica Bongiovanni ◽  
Cristina Fornengo ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Catheter Ablation ◽  
Left Atrial ◽  
Radiofrequency Catheter Ablation ◽  
Atrial Function ◽  
Left Atrial Function

scholarly journals Different Responses of Left Atrium and Left Atrial Appendage to Radiofrequency Catheter Ablation of Atrial Fibrillation: a Follow Up MRI study

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Yun Gi Kim ◽  
Jaemin Shim ◽  
Suk-Kyu Oh ◽  
Hee-Soon Park ◽  
Kwang-No Lee ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Catheter Ablation ◽  
Left Atrium ◽  
Left Atrial ◽  
Radiofrequency Catheter Ablation ◽  
Left Atrial Appendage ◽  
Atrial Appendage ◽  
Mri Study

Persistency of left atrial linear lesions after radiofrequency catheter ablation for atrial fibrillation: Data from an invasive follow-up electrophysiology study

2017 ◽  
Vol 28 (12) ◽  
pp. 1403-1414 ◽  
Author(s):  
Nebojša Mujović ◽  
Milan Marinković ◽  
Nebojša Marković ◽  
Goran Stanković ◽  
Gregory Y. H. Lip ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Catheter Ablation ◽  
Left Atrial ◽  
Radiofrequency Catheter Ablation ◽  
Linear Lesions ◽  
Electrophysiology Study

scholarly journals The Predictive Value of left atrial appendage peak flow velocity in Recurrence after initial radiofrequency catheter ablation of persistent atrial fibrillation: A single-center prospective study.

2021 ◽  
Author(s):  
Wentao Yang ◽  
Qing Zhao ◽  
Minghui Yao ◽  
Xiangdong Li ◽  
Yue Zhang ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Catheter Ablation ◽  
Flow Velocity ◽  
Left Atrial ◽  
Radiofrequency Catheter Ablation ◽  
Left Atrial Appendage ◽  
Peak Flow ◽  
Persistent Atrial Fibrillation ◽  
Af Recurrence

Background: Recurrence after Radiofrequency catheter ablation（RFCA） of persistent atrial fibrillation (PeAF) is still elusive. The present study aimed to evaluate the relationship between the left atrial appendage peak flow velocity(LAAV) and atrial fibrillation(AF) recurrences in PeAF patients after their initial RFCA. Method: This study included 164 consecutive PeAF patients who performed initial RFCA from January 2018 to December 2019. Transesophageal echocardiography was used to collect the LAAV before ablation. Patients’ demographic and clinical information was gathered. To detect the recurrences of AF, patients were checked up at routine intervals. A Cox proportional hazards regression analysis was adopted to evaluate the LAAV and other clinical variables as predictors of AF recurrences throughout follow-up. Results: AF recurrence resulted in 43 (26.2%) patients after a median follow-up of 15 months (IQR: 12-18 months). LAAV reduced in patients with AF recurrences (0.36±0.15m/s vs. 0.45±0.17m/s, P = 0.004). A Kaplan-Meier study revealed that the low LAAV(≤0.37m/s) group had a lower event-free survival rate than the high LAAV (>0.37m/s) group (17.6 months vs. 21.2 months, Log Rank P = 0.002). LAAV≤0.37m/s (HR 2.32, 95%CI 1.177-4.227, P = 0.014) was found to be independent predictors of AF recurrence after RFCA in the multivariate Cox regression. Conclusion: A low LAAV is linked to AF recurrence and acts as a predictor of AF recurrence after the initial RFCA of peAF. This would aid in treatment strategy optimization and management of patients with peAF.

scholarly journals Adjusted Left Atrial Emptying Fraction as a Predictor of Procedural Outcome after Catheter Ablation for Atrial Fibrillation

2015 ◽  
Vol 42 (3) ◽  
pp. 216-225 ◽  
Author(s):  
Sung Il Im ◽  
Jin Oh Na ◽  
Sun Won Kim ◽  
Cheol Ung Choi ◽  
Jin Won Kim ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Atrial Fibrillation ◽  
Catheter Ablation ◽  
Left Atrial ◽  
Multislice Computed Tomography ◽  
Area Under The Curve ◽  
Persistent Atrial Fibrillation ◽  
Atrial Remodeling ◽  
Mitral Inflow ◽  
Recurrent Atrial Fibrillation

Structural remodeling of the left atrium is a risk factor for recurrent arrhythmia after catheter ablation for atrial fibrillation; however, data are sparse regarding the role of functional left atrial remodeling in predicting procedural outcomes. We evaluated whether left atrial transport function could be used to predict recurrent atrial fibrillation. From July 2008 through August 2010, we enrolled 202 consecutive patients who underwent catheter ablation for atrial fibrillation (paroxysmal=120, persistent=82). Left atrial volumes (LAVs) were measured by means of multislice computed tomography at every 10% of the R-R interval, and measurements were adjusted for body surface area to yield the LAV index (LAVI) at baseline. The left atrial emptying fraction (LAEF) was calculated according to LAV differences. During the mean follow-up period of 10 ± 4 months after a single ablation procedure, atrial fibrillation recurred in 59 patients (paroxysmal=19, persistent=40). Multivariate analysis revealed that persistent atrial fibrillation, early mitral inflow velocity, LAVImax, LAVImin, LAEF, LAVImax/LAEF, and LAVImin/LAEF were all independent predictors of atrial fibrillation, but the best predictor was LAVImin/LAEF (β=1.329, P=0.001). The cutoff value was 1.61 (mL/m2)/%, and the sensitivity and specificity were 74.6% and 62.2%, respectively (area under the curve=0.761). Our study shows that adjusted left atrial emptying fraction with use of multislice computed tomography might be a useful, noninvasive method to select patients for ablation.

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