Pediatric Right Bundle Branch Block Differential Diagnoses

Updated: Jan 24, 2022
  • Author: Glenn T Wetzel, MD, PhD; Chief Editor: Syamasundar Rao Patnana, MD  more...
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Diagnostic Considerations

Important considerations

Although the risk of right bundle branch block (RBBB) progressing to complete heart block and sudden death is low, patients require workup and consultation with a pediatric cardiologist.

Failure to have the child properly evaluated could result in an unnecessary death and the legal ramifications resulting from such a tragedy.

Other problems to be considered

In patients with suspected RBBB, also consider the following in the differential diagnosis:

  • Interventricular conduction delay

  • Right bundle branch aberrancy (premature atrial contractions, supraventricular tachycardia)

  • Premature ventricular contractions and other ventricular arrhythmia

  • Paced ventricular beat

  • Wolff-Parkinson-White syndrome (ventricular preexcitation)

  • Brugada syndrome

  • Arrhythmogenic right ventricle cardiomyopathy (ARVC)