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Updated: Jun 5, 2026

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
Published on: December 11, 2017
Cardiac resynchronization therapy for left ventricular dysfunction induced by chronic right ventricular pacing in a
Hyung Woo Kim1, Gi Beom Kim, Eun Jung Bae
1Division of Cardiology, Department of Pediatrics, Seoul National University Children's Hospital, Seoul National University College of Medicine, Seoul, Korea.
Cardiac resynchronization therapy (CRT) improved heart function in a young boy with heart failure. This rare pediatric application shows CRT
Area of Science:
- Pediatric Cardiology
- Electrophysiology
- Congenital Heart Disease
Background:
- Cardiac resynchronization therapy (CRT) is established for adult heart failure with low ejection fraction and wide QRS.
- CRT application in pediatric patients remains limited.
- Congenital complete atrioventricular block can lead to ventricular dysfunction.
Observation:
- A 9-year-old boy presented with progressive left ventricular (LV) dilatation and dysfunction.
- This condition followed chronic VVI pacemaker therapy for congenital complete atrioventricular block.
- The patient's condition was associated with maternal anti-SSA/Ro and SSB/La antibodies.
Findings:
- Epicardially established CRT was implemented in the pediatric patient.
- Following CRT, significant improvement in LV dysfunction was observed.
- The therapy effectively addressed the progressive cardiac deterioration.
Implications:
- This case highlights the potential efficacy of CRT in pediatric heart failure.
- It suggests CRT as a viable therapeutic option for young patients with specific cardiac conditions.
- Further research into pediatric CRT is warranted to establish its role in managing complex congenital heart disease.
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