M29-1, Part 5, E

Incomplete RBBB looks like “normal” RBBB but has a QRS duration within normal limits with the same terminal QRS features. This is often a normal variant. Causes of RBBB. 1. May be a normal variant. 2. Myocardial infarction. 3. Hypertension. 4. Myocarditis. 5. Primary disease of the cardiac electrical conduction system 6. Cardiomyopathy. 7. ................
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