Intraoperative post-annuloplasty three-dimensional valve analysis does not predict recurrent ischemic mitral regurgitation

Journal of Cardiothoracic Surgery

Feroze Mahmood¹  Judy Hung²  Kamal R. Khabbaz³  Massimo A. Mariani⁴  Thomas G. Gleason⁵  Paul A. Yushkevich⁶  Michael A. Acker⁷  Alison M. Pouch⁸  Inez J. Wijdh-den Hamer⁸  Frank Meijerink⁸  Ahmed H. Aly⁸  Wobbe Bouma⁸  Eric K. Lai⁸  Thomas J. Eperjesi⁸  Robert C. Gorman⁸  Joseph H. Gorman⁸ 

[1] Department of Anesthesia, Beth Israel Deaconess Medical Center, Harvard Medical School;Department of Cardiology, Massachusetts General Hospital, Harvard Medical School;Department of Cardiothoracic Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School;Department of Cardiothoracic Surgery, University of Groningen, University Medical Center Groningen;Department of Cardiothoracic Surgery, University of Pittsburgh;Department of Radiology, University of Pennsylvania;Department of Surgery, University of Pennsylvania;Gorman Cardiovascular Research Group, University of Pennsylvania;

关键词: Ischemia ▪ mitral regurgitation ▪ mitral valve repair ▪ three-dimensional echocardiography;   

DOI  :  10.1186/s13019-020-01138-7

来源: DOAJ

【 摘 要 】

Abstract Background High ischemic mitral regurgitation (IMR) recurrence rates continue to plague IMR repair with undersized ring annuloplasty. We have previously shown that pre-repair three-dimensional echocardiography (3DE) analysis is highly predictive of IMR recurrence. The objective of this study was to determine the quantitative change in 3DE annular and leaflet tethering parameters immediately after repair and to determine if intraoperative post-repair 3DE parameters would be able to predict IMR recurrence 6 months after repair. Methods Intraoperative pre- and post-repair transesophageal real-time 3DE was performed in 35 patients undergoing undersized ring annuloplasty for IMR. An advanced modeling algorhythm was used to assess 3D annular geometry and regional leaflet tethering. IMR recurrence (≥ grade 2) was assessed with transthoracic echocardiography 6 months after repair. Results Annuloplasty significantly reduced septolateral diameter, commissural width, annular area, and tethering volume and significantly increased all segmental tethering angles (except A2). Intraoperative post-repair annular geometry and leaflet tethering did not differ significantly between patients with recurrent IMR (n = 9) and patients with non-recurrent IMR (n = 26). No intraoperative post-repair predictors of IMR recurrence could be identified. Conclusions Undersized ring annuloplasty changes mitral geometry acutely, exacerbates leaflet tethering, and generally fixes IMR acutely, but it does not always fix the delicate underlying chronic problem of continued left ventricular dilatation and remodeling. This may explain why pre-repair 3D valve geometry (which reflects chronic left ventricular remodeling) is highly predictive of recurrent IMR, whereas immediate post-repair 3D valve geometry (which does not completely reflect chronic left ventricular remodeling anymore) is not.

【 授权许可】

Unknown