TY - JOUR
T1 - Left atrial strain and recurrence of atrial fibrillation after thoracoscopic surgical ablation
T2 - a subanalysis of the AFACT study
AU - Baalman, Sarah W. E.
AU - van den Berg, Nicoline W. E.
AU - Neefs, Jolien
AU - Berger, Wouter R.
AU - Meulendijks, Eva R.
AU - de Bruin-Bon, Rianne H. A. C. M.
AU - Bouma, Berto J.
AU - van Boven, Wim Jan P.
AU - Driessen, Antoine H. G.
AU - de Groot, Joris R.
N1 - Funding Information: Baalman, van den Berg, Neefs, Berger, Meulendijks, de Bruin-Bon and van Boven report no relationships that could be constructed as declaration of interest. Bouma reports a research grant from Abbott, Driessen reports consulting fees for Atricure, De Groot reports research grants Abbott, Articure, Bayer, Boston Scientific, Daiichi Sankyo, Johnson&Johnson, Medtronic, consulting fees for Atricure, Bayer, Biotronik, Diachii Sankyo, Johnson&Johnson, Medtronic, Novartis, Servier. Publisher Copyright: © 2022, The Author(s).
PY - 2022
Y1 - 2022
N2 - To assess transthoracic echocardiographic (TTE) left atrial (LA) strain parameters and their association with atrial fibrillation (AF) recurrence after thoracoscopic surgical ablation (SA) in patients in sinus rhythm (SR) or in AF at baseline. Patients participating in the Atrial Fibrillation Ablation and Autonomic Modulation via Thoracoscopic Surgery trial were included. All patients underwent thoracoscopic pulmonary vein isolation with LA appendage exclusion and were randomized to ganglion plexus (GP) or no GP ablation. In TTEs performed before surgery, LA strain and mechanical dispersion (MD) of the LA reservoir and conduit phase in all patients, and of the contraction phase in patients in SR were obtained. Recurrence of AF was defined as any documented atrial tachyarrhythmia lasting > 30 s during one year of follow-up. Two hundred and four patients (58.6 ± 7.8 years, 73% male, 57% persistent AF) were included. At baseline TTE 121 (59%) were in SR and 83 (41%) had AF. Patients with AF recurrence had lower LA strain of the reservoir phase (13.0% vs. 16.6%; p = < 0.001) and a less decrease in strain of the conduit phase (−9.0% vs. −11.8%; p = 0.006), regardless of rhythm. MD of the conduit phase was larger in patients with AF recurrence (79.4 vs. 43.5 ms; p = 0.012). Multivariate cox regression analysis demonstrated solely an association between LA strain of the reservoir phase and AF recurrence in patients in SR (HR 0.95, p = 0.046) or with AF (HR 0.90, p = 0.038). A reduction in LA strain of the reservoir phase prior to SA predicts recurrence of AF in both patients with SR or AF. Left atrial strain assessment may therefore add to a better patient selection for SA.
AB - To assess transthoracic echocardiographic (TTE) left atrial (LA) strain parameters and their association with atrial fibrillation (AF) recurrence after thoracoscopic surgical ablation (SA) in patients in sinus rhythm (SR) or in AF at baseline. Patients participating in the Atrial Fibrillation Ablation and Autonomic Modulation via Thoracoscopic Surgery trial were included. All patients underwent thoracoscopic pulmonary vein isolation with LA appendage exclusion and were randomized to ganglion plexus (GP) or no GP ablation. In TTEs performed before surgery, LA strain and mechanical dispersion (MD) of the LA reservoir and conduit phase in all patients, and of the contraction phase in patients in SR were obtained. Recurrence of AF was defined as any documented atrial tachyarrhythmia lasting > 30 s during one year of follow-up. Two hundred and four patients (58.6 ± 7.8 years, 73% male, 57% persistent AF) were included. At baseline TTE 121 (59%) were in SR and 83 (41%) had AF. Patients with AF recurrence had lower LA strain of the reservoir phase (13.0% vs. 16.6%; p = < 0.001) and a less decrease in strain of the conduit phase (−9.0% vs. −11.8%; p = 0.006), regardless of rhythm. MD of the conduit phase was larger in patients with AF recurrence (79.4 vs. 43.5 ms; p = 0.012). Multivariate cox regression analysis demonstrated solely an association between LA strain of the reservoir phase and AF recurrence in patients in SR (HR 0.95, p = 0.046) or with AF (HR 0.90, p = 0.038). A reduction in LA strain of the reservoir phase prior to SA predicts recurrence of AF in both patients with SR or AF. Left atrial strain assessment may therefore add to a better patient selection for SA.
KW - Atrial fibrillation
KW - Left atrial strain
KW - Mechanical dispersion
KW - Mini-maze
KW - Thoracoscopic surgical abation
UR - http://www.scopus.com/inward/record.url?scp=85134471879&partnerID=8YFLogxK
U2 - https://doi.org/10.1007/s10554-022-02645-5
DO - https://doi.org/10.1007/s10554-022-02645-5
M3 - Article
C2 - 36445663
SN - 1569-5794
VL - 38
SP - 2615
EP - 2624
JO - international journal of cardiovascular imaging
JF - international journal of cardiovascular imaging
ER -