Description and staging of patients with Chagas disease and ECG abnormalities in Geneva, Switzerland.

RBBB, right bundle branch block; LBBB, left bundle branch block; LAFB, left anterior fascicular block; AVB, atrio-ventricular block; PSVB, premature supra-ventricular beat; PVB, premature ventricular beat; LA, left atria; AT, atrial tachycardia; LVEF, left ventricular ejection fraction.