Regional Left Ventricular Reverse Remodeling After Myectomy in Hypertrophic Cardiomyopathy  Jingjin Wang, PhD, Xin Sun, MD, Minghu Xiao, MD, Minghui Zhang,

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Regional Left Ventricular Reverse Remodeling After Myectomy in Hypertrophic Cardiomyopathy  Jingjin Wang, PhD, Xin Sun, MD, Minghu Xiao, MD, Minghui Zhang, MD, Haibo Chen, MD, Changsheng Zhu, MD, Shuiyun Wang, MD, PhD, Hao Wang, MD, PhD  The Annals of Thoracic Surgery  Volume 102, Issue 1, Pages 124-131 (July 2016) DOI: 10.1016/j.athoracsur.2015.12.072 Copyright © 2016 The Society of Thoracic Surgeons Terms and Conditions

Fig 1 Three-layer speckle tracking of left ventricular (LV) reverse remodeling presented as bull’s eye plots. (A) Before myectomy and (B) at 7-month follow-up. At baseline, free wall longitudinal strain (LS) in the endocardial (Endo), midmyocardial (Mid), and epicardial (Epi) layers was −19.3%, −13.8%, and −10.1%, respectively. At the 7-month follow-up, free wall LS increased to −24.4%, −18.8%, and −14.9% in the endocardial, midmyocardial, and epicardial layers, respectively. Myectomy site average LS increased from −8.7% to −12.7%. (A2C = apical two chamber view; A4C = apical four chamber view; ANT = anterior; AVC MEAS = measured aortic valve closure timing; FR = frame rate; GLPS = global longitudinal peak strain; HR_ApLAX = heart rate in apical long-axis view; INF = inferior; LAT = lateral; LAX = long-axis view; POST = posterior; SEPT = septal; TTPSL_Stdev = standard deviation of time to peak longitudinal strain.) The Annals of Thoracic Surgery 2016 102, 124-131DOI: (10.1016/j.athoracsur.2015.12.072) Copyright © 2016 The Society of Thoracic Surgeons Terms and Conditions

Fig 2 Illustrative cases of l2-month strain in (A and B) 2 patients after myectomy (myectomy site, white arrow). The resected thicknesses (fractions of resected thickness) were 6 mm (33.3%) and 14 mm (53.8%) in patients A and B, respectively.(A1 and B1) Circumferential strains were −13% and −9% in patients A and B, respectively; (A2 and B2) Longitudinal strains were −18% and −5% in patients A and B, respectively, after myectomy. (AVC = aortic valve closure; GS = global strain; SP-C = systolic peak strain- circumferential.) The Annals of Thoracic Surgery 2016 102, 124-131DOI: (10.1016/j.athoracsur.2015.12.072) Copyright © 2016 The Society of Thoracic Surgeons Terms and Conditions