Prognostic Value of Measurement of Myocardial Extracellular Volume Using Dual-energy CT in Heart Failure with Preserved Ejection Fraction

Overview

Journal Sci Rep

Specialty Science

Date 2024 Mar 30

PMID 38553622

Authors

Ying Jiang

Jiaqi Ye

Yang Yang

Ying Zhang

Xiaoyun Yan

Wenhui Qiang

Haixiao Chen

Shuang Xu

Lei Zhou

Rongxing Qi

Qing Zhang

Affiliations

Soon will be listed here.

Abstract

Diffuse myocardial fibrosis is associated with adverse outcomes in heart failure with preserved ejection fraction (HFpEF). Dual-energy CT (DECT) can noninvasively assess myocardial fibrosis by quantification of extracellular volume (ECV) fraction. This study evaluated the association between ECV measured by DECT and clinical outcomes in patients with HFpEF. 125 hospitalized HFpEF patients were enrolled in this retrospective cohort study. ECV was measured using DECT with late iodine enhancement. The composite endpoint was defined as HFpEF hospitalization and all-cause mortality during the follow-up. During the median follow-up of 10.4 months, 34 patients (27.20%) experienced the composite outcomes, including 5 deaths; and 29 HFpEF hospitalizations. The higher DECT-ECV group had higher rates of composite outcomes than the low ECV group (log-rank X = 6.818, P = 0.033). In multivariate Cox regression analysis, the ECV (HR 1.17, 95% CI 1.06-1.30, P = 0.001) and NT-pro BNP (HR 2.83, 95% CI 1.16-6.88, P = 0.022) were independent risk factors for the adverse outcomes. Myocardial ECV measured using DECT was an independent risk factor for adverse outcomes in patients with HFpEF.

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