Left Atrial Appendage Resection Versus Preservation During the Surgical Ablation of Atrial Fibrillation Chee-Hoon Lee, MD, Joon Bum Kim, MD, PhD, Sung-Ho.

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Left Atrial Appendage Resection Versus Preservation During the Surgical Ablation of Atrial Fibrillation Chee-Hoon Lee, MD, Joon Bum Kim, MD, PhD, Sung-Ho Jung, MD, PhD, Suk Jung Choo, MD, PhD, Cheol Hyun Chung, MD, PhD, Jae Won Lee, MD, PhD The Annals of Thoracic Surgery Volume 97, Issue 1, Pages 124-132 (January 2014) DOI: 10.1016/j.athoracsur.2013.07.073 Copyright © 2014 The Society of Thoracic Surgeons Terms and Conditions

Fig 1 Schema of surgical ablation of atrial fibrillation. (CS = coronary sinus; IVC = inferior vena cava; LAA = left atrial appendage; MV = mitral valve; PAs = pulmonary veins; RAA = right atrial appendage; SVC = superior vena cava; TV = tricuspid valve.) The Annals of Thoracic Surgery 2014 97, 124-132DOI: (10.1016/j.athoracsur.2013.07.073) Copyright © 2014 The Society of Thoracic Surgeons Terms and Conditions

Fig 2 Kaplan-Meier curves for (A) overall survival rate and (B) stroke-free survival. Solid line indicates left atrial appendage (LAA); broken line indicates LAA resection. The Annals of Thoracic Surgery 2014 97, 124-132DOI: (10.1016/j.athoracsur.2013.07.073) Copyright © 2014 The Society of Thoracic Surgeons Terms and Conditions

Fig 3 Kaplan-Meier curves for freedom from atrial fibrillation (AF) off antiarrhythmic medication. (AAD = antiarrhythmic drugs class I or III; LAA = left atrial appendage.) The Annals of Thoracic Surgery 2014 97, 124-132DOI: (10.1016/j.athoracsur.2013.07.073) Copyright © 2014 The Society of Thoracic Surgeons Terms and Conditions

Fig 4 Serial follow-up rhythm status at 3, 6, 12, and 24 months after surgery. Black areas indicate atrial fibrillation (AF); light gray areas, permanent pacemaker rhythm (PPM); hatched areas, junctional; dark gray, normal sinus rhythm (NSR). The Annals of Thoracic Surgery 2014 97, 124-132DOI: (10.1016/j.athoracsur.2013.07.073) Copyright © 2014 The Society of Thoracic Surgeons Terms and Conditions

Fig 5 The results of sequential follow-up echocardiography at 1, 3, 6, and 12 months after surgery. (A) Left atrial dimension. (B) Transmitral A-wave velocity. (C) E/A ratio, derived from peak velocities of the early filling wave (E wave) and the A wave. The Annals of Thoracic Surgery 2014 97, 124-132DOI: (10.1016/j.athoracsur.2013.07.073) Copyright © 2014 The Society of Thoracic Surgeons Terms and Conditions