Abstract
Background
The development of left ventricular (LV) remodeling has been associated with an increased cardiovascular risk and cardiogenic death, and different patterns of remodeling result in varying levels of prognosis.
Objective
To investigate the association between different patterns of LV remodeling and clinical outcomes in the preclinical stage of patients with Duchenne muscular dystrophy (DMD).
Materials and methods
A total of 148 patients with DMD and 43 sex- and age-matched healthy participants were enrolled. We used the four-quadrant analysis method to investigate LV remodeling based on cardiac magnetic resonance (MR) imaging. Kaplan-Meier curves were generated to illustrate the event-free survival probability stratified by the LV remodeling pattern. Cox regression models were constructed and compared to evaluate the incremental predictive value of the LV remodeling pattern.
Results
During the median follow-up period of 2.2 years, all-cause death, cardiomyopathy, and ventricular arrhythmia occurred in 5, 35, and 7 patients, respectively. LV concentric hypertrophy (hazard ratio 2.91, 95% confidence interval 1.47–5.75, P=0.002) was an independent predictor of composite endpoint events. Compared to the model without LV concentric hypertrophy, the model with LV concentric hypertrophy had significant incremental predictive value (chi-square value 33.5 vs. 25.2, P=0.004).
Conclusion
Age and late gadolinium enhancement positivity were positively correlated with clinical outcomes according to the prediction models. LV concentric hypertrophy was also an independent predictor for risk stratification and provided incremental value for predicting clinical outcomes in the preclinical stage of patients with DMD.
Graphical Abstract
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Data availability
The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request.
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Funding
This work was supported by the National Natural Science Foundation of China (82271981, 82202104) and Sichuan Science and Technology Program (2022NSFSC1494, 2023YFG0284), Universal Application Project of Health Commission of Sichuan Province (21PJ048), Clinical Research Finding of Chinese Society of Cardiovascular Disease (CSC) of 2019 (HFCSC2019B01), and Fundamental Research Funds for the Central Universities (SCU2020D4132).
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W.Y., L.Y., Y.G., and H.X. conceived, supervised, and supported the study. W.Y., L.Y., K.X., R.X., H.F., Y.S., Z.Z., T.X., and X.C. collated and analyzed the data, performed the statistical analysis, and drafted the initial manuscript. W.Y., L.Y., and H.X. interpreted the images. All authors reviewed and approved the final manuscript.
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Yuan, Wf., Yu, L., Xu, K. et al. Left ventricular concentric hypertrophy with cardiac magnetic resonance imaging improves risk stratification in patients with Duchenne muscular dystrophy: a prospective cohort study. Pediatr Radiol 54, 208–217 (2024). https://doi.org/10.1007/s00247-024-05856-1
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DOI: https://doi.org/10.1007/s00247-024-05856-1