Fragmented QRS on Baseline Electrocardiography Predicts Anatomically Significant Stenosis in Patients With Intermediate Coronary Lesions on Coronary Computed Tomography Angiography
Background Intermediate-grade stenosis (40–70%) on coronary computed tomography angiography (CCTA) often presents diagnostic uncertainty regarding the necessity of invasive coronary angiography (ICA). Although fragmented QRS (fQRS) on electrocardiography (ECG) indicates myocardial scarring and ischemia, its predictive...