Abstract
Objectives
Heart failure with preserved ejection fraction (HFpEF) is a syndrome with significant clinical heterogeneity. Myocardial fibrosis has been considered a common pathological process in the development and progress of HFpEF. This study aimed to consolidate data on the prognostic effect of myocardial fibrosis, evaluated by cardiovascular magnetic resonance (CMR) imaging in patients with HFpEF.
Methods
Three medical databases were searched for potentially related articles up to February 28, 2023. Cohort studies reporting associations between myocardial fibrosis and risk of all-cause mortality or composite major adverse cardiac outcomes (MACE) were included. Cardiac fibrosis was evaluated by CMR metrics, including late gadolinium enhancement (LGE) or myocardial extracellular volume (ECV). The hazard ratios (HRs) and 95% confidence intervals (CI) of the outcomes for higher myocardial fibrosis were calculated.
Results
Twelve studies with 2787 patients with HFpEF were included for analysis. After a median follow-up duration of 31.2 months, a higher level of cardiac fibrosis was associated with a significant increase in the risk of MACE (HR = 1.34, 95% CI = 1.14–1.57) and all-cause mortality (HR = 1.74, 95% CI = 1.27–2.39), respectively. Furthermore, the increased risk of outcomes was both observed when cardiac fibrosis was defined according to LGE or ECV, respectively.
Conclusions
Higher burden of myocardial fibrosis evaluated by CMR can predict a poor prognosis in patients with HFpEF. Evaluation of LGE or ECV based on CMR could be recommended in these patients for risk stratification and guiding further treatment.
Clinical relevance statement
Inclusion of cardiovascular magnetic resonance examination in the diagnostic and risk-evaluation algorithms in patients with heart failure with preserved ejection fraction should be considered in clinical practice and future studies.
Key Points
• Myocardial fibrosis is a common pathological process in heart failure with preserved ejection fraction.
• A higher myocardial fibrosis burden on cardiac magnetic resonance predicts a poor prognosis in patients with heart failure with preserved ejection fraction.
• Evaluation of myocardial fibrosis may be useful in patients with heart failure with preserved ejection fraction for risk stratification and treatment guidance.
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Abbreviations
- CI:
-
Confidence intervals
- CMR:
-
Cardiovascular magnetic resonance
- ECV:
-
Myocardial extracellular volume
- HFpEF:
-
Heart failure with preserved ejection fraction
- HFrEF:
-
Heart failure with reduced ejection fraction
- HRs:
-
Hazard ratios
- LGE:
-
Late gadolinium enhancement
- MACE:
-
Major adverse cardiac event
- MOLLI:
-
Modified Look-Locker inversion recovery sequence
- QUIPS:
-
Quality in Prognosis Studies
- RRs:
-
Relative risks
- SEs:
-
Standard errors
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Acknowledgements
We thank Emily Woodhouse, PhD, from Liwen Bianji (Edanz) (www.liwenbianji.cn) for editing the English text of a draft of this manuscript.
The datasets and/or analyses during the current study are available from the corresponding author on reasonable request.
Funding
This study was supported by the National Natural Science Foundation of China (no.: 82270384), Guangdong Basic and Applied Basic Research Fund (Key project of Guangdong-Foshan Joint Fund) (2019B1515120044), the Scientific Research Start-up Plan of Southern Medical University (CX2018N202), the Clinical Research Startup Program of Shunde Hospital, Southern Medical University (CRSP2019001), and the Outstanding Young Medical Staff in Guangdong Province (600001).
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The scientific guarantor of this publication is Yuli Huang.
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Zhang, X., Yang, S., Hao, S. et al. Myocardial fibrosis and prognosis in heart failure with preserved ejection fraction: a pooled analysis of 12 cohort studies. Eur Radiol 34, 1854–1862 (2024). https://doi.org/10.1007/s00330-023-10218-w
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DOI: https://doi.org/10.1007/s00330-023-10218-w