Baseline Evaluation of the Patient with Chronic T. cruzi Infection

EKG findings characteristic of Chagas disease

• Common
  • Right bundle branch block
  • Incomplete right bundle branch block (QRS 0.10-0.11 in adults)
  • Left anterior fascicular block
  • First degree, second degree or complete AV block
  • Bradycardia and other manifestations of sinus node dysfunction
  • Ventricular extrasystoles, often frequent, multifocal and/or paired
  • Non-sustained or sustained ventricular tachycardia
• Less common but clinically significant when present
  • Atrial fibrillation or flutter
  • Left bundle branch block
  • Low QRS voltage
  • Q waves