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Published on: January 28, 2020
Myocarditis Prognostic Score: A New Risk Assessment Tool
Daniela Di Lisi1, Cristina Madaudo2, Francesca Macaione1
1Division of Cardiology, University Hospital Paolo Giaccone, 90127 Palermo, Italy.
Background:
Myocarditis is an inflammatory disease of the myocardium with multiple causes and evolutions. The aim of our study was to design a prognostic multiparametric score in patients with myocarditis, to identify those at higher risk of cardiovascular outcomes.
Methods:
A prospective study was performed enrolling 98 patients with myocarditis: 72 M, 26 F; median age 27 [IQR 20-40]. Patients were divided into two groups: complicated (CM) and uncomplicated myocarditis (UM). Six months after hospital admission, cardiac magnetic resonance (CMR) and cardiological consultation were repeated. Cardiovascular outcomes (death, hospitalization for heart failure, heart transplant, ICD implantation, and heart failure development) were evaluated at 6 months and after 3 years.
Results:
We found 67 UM and 31 CM. Cardiovascular outcomes were significantly higher in patients with CM. We found a significant correlation between cardiovascular outcomes and reduced LVEF at hospital admission, reduced global longitudinal strain in absolute values, septal late gadolinium enhancement (LGE) at CMR, longer persistence time of increased troponin, LGE extension progression or persistence at 6 months of CMR. A myocarditis prognostic score was developed. A score ≥ 5 showed higher sensitivity (100%) and specificity (87%)-AUC 1, to identify cardiovascular outcomes in patients with myocarditis. A score between 3 and 4 showed high sensitivity but low specificity. A score ≤ 2 was associated with low probability of cardiovascular outcomes.
Conclusion:
Our study confirms the high probability of cardiovascular outcomes in patients with CM and it suggests a myocarditis prognostic score to identify patients at higher risk of cardiovascular outcomes.
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