Abstract
Objective
The objective of this meta-analysis was to assess the clinical utility of anomalous discoveries on cardiac magnetic resonance, particularly the right ventricular extracellular volume (RV-ECV), among individuals who underwent surgical repair for Tetralogy of Fallot (rTOF).
Methods
We conducted a systematic search of electronic databases including PubMed, Web of Science Core Collection, Cochrane advanced search, and EMBASE. Our analysis involved a comparison of ECV levels between rTOF patients and controls, as well as an evaluation of the predictive value of ECV for future adverse events.
Results
We identified 16 eligible studies that encompassed 856 rTOF patients and 283 controls. Our meta-analysis showed a significant increase in LV-ECV among rTOF patients compared to control subjects (MD = 2.63, 95%CI: 1.35 to 3.90, p < 0.0001, I2 = 86%, p for heterogeneity < 0.00001). Moreover, RV-ECV was found to be substantially higher in patients compared to LV-ECV. Our meta-analysis also revealed a significant association between RV-ECV and adverse events (HR = 1.15, 95% CI: 1.04 to 1.27, p = 0.005, I2 = 0%, p for heterogeneity = 0.62), while LV-ECV did not show any significant association with adverse events (HR = 1.12, 95% CI: 0.92 to 1.36, p = 0.16, I2 = 0%, p for heterogeneity = 0.46).
Conclusion
The results of this meta-analysis on RV-ECV confirmed the presence of RV fibrosis as one of the prognostic factors in rTOF patients.
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Abbreviations
- CI:
-
Confidence interval
- CMR:
-
Cardiac magnetic resonance
- ECV:
-
Extracellular volume fraction
- LGE:
-
Late gadolinium enhancement
- LV:
-
Left ventricular
- MD:
-
Mean difference
- MRI:
-
Magnetic resonance imaging
- rTOF:
-
Repaired tetralogy of Fallot
- RV:
-
Right ventricular
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Tanigaki, T., Kato, S., Azuma, M. et al. Right ventricular myocardial fibrosis evaluated by extracellular volume fraction by magnetic resonance imaging in patients with repaired tetralogy of Fallot: a meta-analysis. Heart Vessels 39, 349–358 (2024). https://doi.org/10.1007/s00380-023-02332-y
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DOI: https://doi.org/10.1007/s00380-023-02332-y