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ZHANG K G, WANG C X, GAO D, et al. Application Value of Myocardial Extracellular Volume in Preoperative Assessment of TAVI[J]. CT Theory and Applications, xxxx, x(x): 1-8. DOI: 10.15953/j.ctta.2024.163. (in Chinese).
Citation: ZHANG K G, WANG C X, GAO D, et al. Application Value of Myocardial Extracellular Volume in Preoperative Assessment of TAVI[J]. CT Theory and Applications, xxxx, x(x): 1-8. DOI: 10.15953/j.ctta.2024.163. (in Chinese).
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Application Value of Myocardial Extracellular Volume in Preoperative Assessment of TAVI

  • Department of Medical Imaging, the Second Hospital of Hebei Medical University, Shijiazhuang 050000

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  • Received Date: July 29, 2024
  • Revised Date: October 17, 2024
  • Accepted Date: October 28, 2024
  • Available Online: February 07, 2025
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    • Abstract

  • Objective: To explore the value of myocardial extracellular volume measured using dual-energy computed tomography (CT) in preoperative risk stratification for transcatheter aortic valve implantation (TAVI). Methods: We prospectively included 71 patients who underwent CT assessment before TAVI between June 2023 and June 2024, all of whom underwent dual-energy CT-delayed enhancement scans to calculate the ECV. Based on the median ECV, the patients were divided into high-ECV and low-ECV groups. The aim was to observe TAVI surgical outcomes and early postoperative recovery among the two patient groups. Results: The median ECV of the 71 patients was 33.92 ± 6.37%. Of these, 49 patients ultimately underwent TAVI surgery at our hospital, with 26 patients in the high-ECV group and 23 patients in the low-ECV group. The postoperative hospital stay, intensive care unit (ICU) stay, and incidence of cardiovascular adverse events were significantly greater in the high-ECV group than in the low-ECV group. Correlation analysis showed a positive correlation between ECV and the length of postoperative hospital stay (r=0.446, P=0.002). Multifactorial logistic regression analysis showed that ECV was an independent risk factor for short-term postoperative adverse cardiovascular events (OR=1.399, P=0.037). Conclusion: Cardiac ECV based on dual-energy CT has potential for preoperative risk stratification in patients with aortic valve disease undergoing TAVI.

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