Application Value of Myocardial Extracellular Volume in Preoperative Assessment of TAVI
ZHANG Kaige
WANG Chunxia
GAO Duo
FU Kailiang
Abstract：Objective:To explore the value of myocardial extracellular volume(ECV)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.Follow-up was conducted 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 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).Multifactorial logistic regression analysis showed that ECV was an independent risk factor for short-term postoperative adverse cardiovascular events(OR=1.399).Conclusion:Cardiac ECV based on dual-energy CT has potential for preoperative risk stratification in patients with aortic valve disease undergoing TAVI.
Keywords：dual-energy CTextracellular volumetranscatheter aortic valve implantationrisk evaluation
Publication Date：2025-11-30
Online Publishing Date：2025-12-19(First online date of this platform, not the publication date of the document)
Pages：8( 1157-1164 )