There is a flaw in the bundle branches, the pathways for the electrical impulse running along the right and left ventricles. This can be congenital or acquired, and is often seen after surgery to close a defect in the septum (the wall of tissue) between the ventricles.-- chop.edu
Andrew D. Blaufox, MD Pediatric Electrophysiology
Associate Professor Clinical Pediatrics Albert Einstein College of Medicine.
Medical School: Albert Einstein College of Medicine .
Residency: Mount Sinai School of Medicine .
Fellowship: Mount Sinai School of Medicine and
Medical University of South Carolina