Abstract
Objectives
We aimed to explore imaging features including tissue characterization and myocardial deformation in diabetic heart failure with preserved ejection fraction (HFpEF) patients by magnetic resonance imaging (MRI) and investigate its prognostic value for adverse outcomes.
Materials and methods
Patients with HFpEF who underwent cardiac MRI between January 2010 and December 2016 were enrolled. Feature-tracking (FT) analysis and myocardial fibrosis were assessed by cardiac MRI. Cox proportional regression analysis was performed to determine the association between MRI variables and primary outcomes. Primary outcomes were all-cause death or heart failure hospitalization during the follow-up period.
Results
Of the 335 enrolled patients with HFpEF, 191 had diabetes mellitus (DM) (mean age: 58.7 years ± 10.8; 137 men). During a median follow-up of 10.2 years, 91 diabetic HFpEF and 56 non-diabetic HFpEF patients experienced primary outcomes. DM was a significant predictor of worse prognosis in HFpEF. In diabetic HFpEF, the addition of conventional imaging variables (left ventricular ejection fraction, left atrial volume index, extent of late gadolinium enhancement (LGE)) and global longitudinal strain (GLS) resulted in a significant increase in the area under the receiver operating characteristic curve (from 0.693 to 0.760, p < 0.05). After adjustment for multiple clinical and imaging variables, each 1% worsening in GLS was associated with a 9.8% increased risk of adverse events (p = 0.004).
Conclusions
Diabetic HFpEF is characterized by more severely impaired strains and myocardial fibrosis, which is identified as a high-risk HFpEF phenotype. In diabetic HFpEF, comprehensive cardiac MRI provides incremental value in predicting prognosis. Particularly, MRI-FT measurement of GLS is an independent predictor of adverse outcome in diabetic HFpEF.
Clinical relevance statement
Our findings suggested that MRI-derived variables, especially global longitudinal strain, played a crucial role in risk stratification and predicting worse prognosis in diabetic heart failure with preserved ejection fraction, which could assist in identifying high-risk patients and guiding therapeutic decision-making.
Key Points
• Limited data are available on the cardiac MRI features of diabetic heart failure with preserved ejection fraction, including myocardial deformation and tissue characterization, as well as their incremental prognostic value.
• Diabetic heart failure with preserved ejection fraction patients was characterized by more impaired strains and myocardial fibrosis. Comprehensive MRI, including tissue characterization and global longitudinal strain, provided incremental value for risk prediction.
• MRI served as a valuable tool for identifying high-risk patients and guiding clinical management in diabetic heart failure with preserved ejection fraction.
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Abbreviations
- AUC:
-
Area under the curve
- CAD:
-
Coronary artery disease
- DM:
-
Diabetes mellitus
- FT:
-
Feature tracking
- GCS:
-
Global circumferential strain
- GLS:
-
Global longitudinal strain
- GRS:
-
Global radial strain
- HFpEF:
-
Heart failure with preserved ejection fraction
- HR:
-
Hazard ratios
- LVEF:
-
Left ventricular ejection fraction
- LVMi:
-
Left ventricular end-diastole mass index
- NT-proBNP:
-
N-terminal pro–brain natriuretic peptide
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Funding
This study was funded by the National Natural Science Foundation of China (Grants 81971588), the Construction Research Project of Key Laboratory of the Chinese Academy of Medical Sciences (2019PT310025), the Youth Key Program of High-level Hospital Clinical Research (2022-GSP-QZ-5), Beijing Natural Science Foundation (7242110) and the National Foreign Expert Talent Project (G2021194020L).
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The scientific guarantor of this publication is Minjie Lu.
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• prognostic study
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Yang, W., Zhu, L., He, J. et al. Long-term outcomes prediction in diabetic heart failure with preserved ejection fraction by cardiac MRI. Eur Radiol (2024). https://doi.org/10.1007/s00330-024-10658-y
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DOI: https://doi.org/10.1007/s00330-024-10658-y