The Relationship Between Cardiac CT-based Left Atrial Structure and Epicardial Adipose Tissue and Postablation Atrial Fibrillation Recurrence Within 2 Years.

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    • Source:
      Publisher: Lippincott Williams & Wilkins Country of Publication: United States NLM ID: 8606160 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1536-0237 (Electronic) Linking ISSN: 08835993 NLM ISO Abbreviation: J Thorac Imaging Subsets: MEDLINE
    • Publication Information:
      Publication: 1998- : Philadelphia, PA : Lippincott Williams & Wilkins
      Original Publication: [Gaithersburg, Md. : Aspen Systems Corp., c1985-
    • Subject Terms:
    • Abstract:
      Purpose: The aim of this study was to explore the association of cardiac CT-based left atrium (LA) structural and functional parameters and left atrial epicardial adipose tissue (LA-EAT) parameters with postablation atrial fibrillation (AF) recurrence within 2 years.
      Materials and Methods: Contrast-enhanced cardiac CT images of 286 consecutive AF patients (median age: 65 y; 97 females) who underwent initial ablation between June 2018 and June 2020 were retrospectively analyzed. Structural and functional parameters of LA, including maximum and minimum volume and ejection fraction of LA and left atrial appendage (LAA), and LA-EAT volume, were measured. The body surface area indexed maximum and minimum volume of LA (LAVI max , LAVI min ) and LAA (LAAVI max , LAAVI min ), and LA-EAT volume index (LA-EATVI) were calculated. Independent predictors of AF recurrence were determined using Cox regression analysis. The clinical predictors were added to the imaging predictors to build a combined model (clinical+imaging). The predictive performance of the clinical, imaging, and combined models was assessed using the area under the receiver operating characteristics curve (AUC).
      Results: A total of 108 (37.8%) patients recurred AF within 2 years after ablation at a median follow-up of 24 months (IQR=11, 32). LA and LAA size and LA-EAT volume were significantly increased in patients with AF recurrence ( P <0.05). After the multivariable regression analysis, LA-EATVI, LAAVI max , female sex, AF duration, and stroke history were independent predictors for AF recurrence. The combined model exhibited superior predictive performance compare to the clinical model (AUC=0.712 vs. 0.641, P =0.023) and the imaging model (AUC=0.712 vs. 0.663, P =0.018).
      Conclusion: Cardiac CT-based LA-EATVI and LAAVI max are independent predictors for postablation AF recurrence within 2 years and may provide a complementary value for AF recurrence risk assessment.
      Competing Interests: The authors declare no conflict of interest.
      (Copyright © 2024 Wolters Kluwer Health, Inc. All rights reserved.)
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    • Publication Date:
      Date Created: 20240527 Date Completed: 20241023 Latest Revision: 20241023
    • Publication Date:
      20241023
    • Accession Number:
      10.1097/RTI.0000000000000789
    • Accession Number:
      38800955