Chagas disease electrocardiogram
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
RBBB and AV block are common findings on ECG among patients with Chagas disease cardiomyopathy.
Electrocardiogram
- Annual 12-lead ECG is recommended for all (treated and untreated) patients with Chagas disease:
- Abnormal 12-lead ECG warrant further cardiac evaluation:
- Echocardiography
- Ambulatory ECG evaluation
- Electrophysiological studies
Common ECG Findings
- RBBB
- AV blocks
- Tachyarrhythmias
- Bradyarrhythmias
- Sinus node dysfunction
Acute form of Chagas Disease
In a patient with diagnosed Chagas disease, cardiac damage is suspected if one or more following ECG findings occurs:
- Right bundle-branch block (RBBB),
- Left anterior fascicular block (LAFB),
- Atrio-Ventricular blocks
- Multifocal PVCs
- Sinus bradycardia
- Abnormal ST segment and / or T wave changes
- Abnormal T and / or Q waves
- Myocarditis is infrequent, appearing in only 1-5% of patients whose having the acute phase of Chagas Disease (1-5 of every 10,000 infected subjects).