Epicardial fat thickness assessment by multi-slice computed tomography for predicting cardiac outcomes in patients undergoing transcatheter aortic valve implantation

Cardiovasc J Afr. 2022;33(3):108-111. doi: 10.5830/CVJA-2021-043. Epub 2021 Oct 15.

Abstract

Introduction: Chronic inflammation promotes aortic valve calcification. It is known that epicardial fat is a source of inflammation. The aim of this study was to investigate the relationship between epicardial fat thickness, cardiac conduction disorders and outcomes in patients undergoing transcatheter aortic valve implantation (TAVI).

Methods: During a three-year period, 45 patients with severe aortic stenosis who underwent TAVI were recruited to the study. Data were collected retrospectively. Epicardial fat was defined as the adipose tissue between the epicardium and the visceral pericardium. Mean epicardial fat thickness was determined by multi-slice computed tomography, which was performed before the procedure.

Results: The average thickness of epicardial fat was 13.06 ± 3.29 mm. This study failed to reveal a significant correlation between epicardial fat thickness and post-procedural left bundle branch block, right bundle branch block, paravalvular aortic regurgitation and pacemaker implantation rates (p > 0.05).

Conclusions: The results of this study failed to show a significant relationship between epicardial fat thickness, cardiac conduction disorders and outcomes, however further studies with larger sample numbers are required to explore the relationship.

Keywords: calcific aortic stenosis; epicardial fat thickness; multi‐slice computed tomography; transcatheter aortic valve implantation.

MeSH terms

  • Adipose Tissue / diagnostic imaging
  • Aortic Valve / diagnostic imaging
  • Aortic Valve / surgery
  • Aortic Valve Stenosis* / diagnostic imaging
  • Aortic Valve Stenosis* / surgery
  • Bundle-Branch Block / diagnostic imaging
  • Bundle-Branch Block / etiology
  • Electrocardiography
  • Heart Valve Prosthesis*
  • Humans
  • Inflammation
  • Pacemaker, Artificial*
  • Pericardium / diagnostic imaging
  • Retrospective Studies
  • Tomography, X-Ray Computed
  • Transcatheter Aortic Valve Replacement* / adverse effects
  • Treatment Outcome