Abstract 15088: Scar Pattern in Chagas Heart Disease

Introduction: Scar in Chagas heart disease (CHD) is thought to be predominantly epicardial and requires epicardial access for ventricular tachycardia (VT) ablation. However, little data exists on scar patterns in this population. We evaluated the patterns of scar in patients who underwent magnetic resonance imaging (MRI) with delayed enhancement (DE). Methods: 19 patients were enrolled who had evidence of DE by MRI: 4 (21.0%) patients with normal electrocardiogram (ECG) and normal echocardiogram (echo) (group 1); 3 (15.8%) patients with abnormal ECG and normal echo (group 2); and 12 (63.2%) patients with abnormal ECG and echo (group 3). Results: In the 19 patients, there were 110 segments (34.1%) with DE identified using a 17-segment model. Pattern of involvement is as follows: endocardial 30 (27.3%), mid-myocardial 22 (20.0%), epicardial 2 (1.8%) and transmural 56 (50.9%). Most common territories of involvement are as follows (% of patients with segment involved): Basal inferolateral (78.9%), basal anter...