Cardiovascular magnetic resonance-based arrhythmogenic substrate assessment improves sudden cardiac death risk stratification in heart failure with mildly reduced ejection fraction: a multicenter retrospective observational study
In HFmrEF, at least 6.3% of LGE serves as a strong predictor of SCD risk, irrespective of its distribution, particularly in patients with negative or mid-wall LGE and ECV significantly enhances risk stratification.