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Junctional ectopic tachycardia evolving into complete heart block.
H Henneveld1, P Hutter, M Bink-Boelkens
1Department of Cardiology, Wilhelmina Children's Hospital, Utrecht, Netherlands.
Heart (British Cardiac Society)
|March 5, 1999
Summary
Congenital junctional ectopic tachycardia in an infant may progress to complete atrioventricular block, potentially leading to heart failure and the need for a pacemaker.
Area of Science:
- Pediatric Cardiology
- Electrophysiology
- Congenital Heart Disease
Background:
- Congenital junctional ectopic tachycardia (CJET) is a rare condition.
- Understanding the long-term sequelae of CJET is crucial for patient management.
Observation:
- An 8-month-old girl transitioned from CJET to complete atrioventricular block within 36 hours.
- Two years later, she developed left ventricular dilation and severe bradycardia (<30 bpm during sleep).
Findings:
- The patient required a transvenous permanent pacemaker due to progressive heart dysfunction.
- This case suggests a potential progression of a pathological process in the atrioventricular junction.
Implications:
- Early recognition and monitoring of CJET patients are vital.
- A unified pathological process may underlie both CJET and subsequent complete atrioventricular block.
- This progression can lead to significant cardiac remodeling and heart failure.