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Persistent complete atrioventricular block in an infant with Kawasaki disease: a rare case report

Hiroyuki Shimada1, Hidenori Yamamoto2, Shinya Hara1

  • 1Department of Pediatrics, TOYOTA Memorial Hospital, Aichi, Japan.

Cardiology in the Young
|July 31, 2025
PubMed

Insights

Kawasaki disease in infants can lead to persistent complete atrioventricular block, a rare heart complication. Continuous electrocardiography monitoring is crucial during the acute phase for early detection and management.

Area of Science:

  • Pediatrics
  • Cardiology
  • Immunology

Background:

  • Kawasaki disease is an acute febrile illness primarily affecting young children.
  • Cardiovascular complications, though rare, can be severe and include myocarditis and arrhythmias.
  • Complete atrioventricular block is an uncommon but serious cardiac manifestation.

Purpose of the Study:

  • To report a rare case of an infant diagnosed with Kawasaki disease.
  • To highlight the occurrence of persistent complete atrioventricular block as a complication.
  • To emphasize the significance of electrocardiography monitoring in Kawasaki disease management.

Main Methods:

  • Case report presentation.
  • Review of clinical presentation and diagnostic findings.
  • Electrocardiography (ECG) monitoring during the acute phase.

Main Results:

  • An infant presented with Kawasaki disease.
  • The infant developed persistent complete atrioventricular block.
  • ECG monitoring revealed the cardiac complication.

Conclusions:

  • Persistent complete atrioventricular block is a rare cardiovascular complication of Kawasaki disease.
  • Early and continuous electrocardiography monitoring is essential during the acute phase of Kawasaki disease.
  • Prompt recognition and management of cardiac complications can improve patient outcomes.

Keywords:
Kawasaki diseasearrhythmiacomplete atrioventricular block

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