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BioMed Research International
Volume 2018 (2018), Article ID 7392435, 5 pages
Research Article

Impact of Thoracoscopic Pulmonary Vein Isolation on Right Ventricular Function: A Pilot Study

1Department of Cardiothoracic Surgery and Cardiology, University Medical Center Groningen, University of Groningen, P.O. Box 30.001, 9700 RB Groningen, Netherlands
2Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
3Heart Surgery Unit, San Raffaele University Hospital, Milan, Italy

Correspondence should be addressed to Gijs E. De Maat

Received 30 July 2017; Revised 9 January 2018; Accepted 22 January 2018; Published 20 February 2018

Academic Editor: Christof Kolb

Copyright © 2018 Gijs E. De Maat et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Objective. Thoracoscopic surgical pulmonary vein isolation (sPVI) has been added to the treatment of atrial fibrillation (AF), showing excellent efficacy outcomes. However, data on right ventricular (RV) function following sPVI has never been studied. Our aim was to investigate RV function following sPVI and compare it to patients who underwent endocardial cryoballoon PVI. Methods. 25 patients underwent sPVI and were pair-matched according to age, sex, and AF type with 21 patients who underwent cryoballoon PVI. RV function was measured using tricuspid annular plane systolic excursion (TAPSE) and RV strain with 2D speckle tracking. Echocardiography was performed at baseline and at median 6-month follow-up. Results. Age was 54 ± 9 years and 84% were male; AF was paroxysmal in 92%. In the sPVI group, TAPSE was reduced with 31% at follow-up echocardiography and RV strain showed a 25% reduction compared to baseline . In the control group, TAPSE and RV strain did not change significantly (−3% and +13%, and ). Change in TAPSE and RV strain was significantly different between groups ( and ). Conclusions. This study shows that RV function is significantly decreased following sPVI. This effect was not observed in the cryoballoon PVI control group.