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Isolated left bundle branch block in a toddler

Hitesh Agrawal1, Frank Zimmerman2, Zahra Naheed3

  • 1Division of Pediatrics, Department of Pediatrics, John H. Stroger Jr. Hospital of Cook County, 1900 W. Polk Street, Room 1134, Chicago, IL 60612, USA.

Case Reports in Cardiology
|June 26, 2014
PubMed

Insights

Isolated left bundle branch block (LBBB) is typically seen in adults with heart conditions. This report details a rare case of LBBB in a healthy 2-year-old child, observed over three years.

Area of Science:

  • Pediatric Cardiology
  • Electrophysiology
  • Congenital Heart Disease

Background:

  • Left bundle branch block (LBBB) is commonly associated with adult heart diseases like hypertension, coronary artery disease, myocarditis, and aortic valvular disease.
  • It can also be a postoperative complication following surgical correction of congenital heart disease.
  • Isolated LBBB in otherwise healthy individuals is known in adults but has not been previously reported in the pediatric population.

Purpose of the Study:

  • To report the incidental finding and persistent nature of isolated left bundle branch block (LBBB) in a pediatric patient.
  • To highlight the potential for LBBB in healthy children, challenging previous understanding.

Main Methods:

  • Case report of a 2-year-old African American female.
  • Incidental electrocardiographic (ECG) finding of isolated LBBB.
  • Follow-up assessment over a 3-year period.

Main Results:

  • A 2-year-old healthy female was incidentally found to have isolated left bundle branch block (LBBB).
  • The LBBB persisted throughout a 3-year follow-up period.
  • This represents the first reported case of isolated LBBB in a pediatric patient.

Conclusions:

  • Isolated left bundle branch block (LBBB) can occur in healthy children.
  • This case expands the known spectrum of LBBB presentation.
  • Further investigation may be warranted to understand the long-term implications of LBBB in pediatric populations.

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