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Case Rep Cardiol. 2014;2014:464579. doi: 10.1155/2014/464579. Epub 2014 May 18.

Isolated left bundle branch block in a toddler.

Author information

1
Division of Pediatrics, Department of Pediatrics, John H. Stroger Jr. Hospital of Cook County, 1900 W. Polk Street, Room 1134, Chicago, IL 60612, USA.
2
Electrophysiology, Advocate Children's Hospital, 440 W. 95th Street, Oak Lawn, IL 60453, USA.
3
Division of Pediatric Cardiology, John H. Stroger Jr. Hospital of Cook County, 1900 W. Polk Street, Room 1123, Chicago, IL 60612, USA.

Abstract

Left bundle branch block (LBBB) usually occurs as a postoperative complication from surgical correction of congenital heart disease and can be associated with hypertensive heart disease, coronary artery disease, myocarditis, and aortic valvular disease. Although isolated LBBB is a conduction abnormality found in some healthy adults, it has not been reported in pediatric population. We report a 2-year-old, healthy African American female who was incidentally discovered to have isolated LBBB that has persisted in a follow-up of 3 years.

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