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Junctional ectopic tachycardia evolving into complete heart block
  1. H Hennevelda,
  2. P Huttera,
  3. M Bink-Boelkensb,
  4. N Sreerama
  1. aDepartment of Cardiology, Wilhelmina Children’s Hospital, Utrecht, Netherlands, bDepartment of Cardiology, Academic Hospital Groningen, Netherlands
  1. Dr N Sreeram, Department of Cardiology, Wilhelmina Children’s Hospital, ABC Straat, 3501 CA Utrecht, Netherlands.


Transition from congenital junctional ectopic tachycardia to complete AV block was observed in an 8 month old girl, over a 36 hour period, during initial hospital admission. Two years later she had evidence of a rapidly increasing left ventricular end diastolic diameter, associated with lowest heart rates during sleep of < 30 beats/min. A transvenous permanent pacemaker was therefore implanted. This finding supports the idea that a pathological process in the area of the AV junction, initially presenting as junctional ectopic tachycardia may later extend to sudden complete atrioventricular block.

  • junctional ectopic tachycardia
  • heart block
  • congenital heart disease
  • paediatrics

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