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Postoperative junctional ectopic tachycardia

F J Azzam1, A C Fiore

  • 1Department of Anesthesiology, Saint Louis University Medical Center, MO 63110, USA.

Canadian Journal of Anaesthesia = Journal Canadien D'Anesthesie
|November 18, 1998
PubMed
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Junctional ectopic tachycardia (JET) in an infant post-cardiac surgery led to severe decompensation. Extracorporeal membrane oxygenation (ECMO) provided essential hemodynamic support and facilitated hypothermia, enabling recovery.

Area of Science:

  • Pediatric Cardiology
  • Cardiac Surgery
  • Critical Care Medicine

Background:

  • Junctional ectopic tachycardia (JET) is a rare but serious complication following pediatric cardiac surgery.
  • Infants undergoing cardiopulmonary bypass are particularly vulnerable to developing accelerated rhythms that compromise hemodynamic stability.

Observation:

  • A 14-day-old infant developed profound cardiac decompensation due to JET post-cardiac surgery.
  • Standard treatments including overdrive pacing, fentanyl, digitalis, magnesium, and procainamide were ineffective.
  • Induced hypothermia and vasoactive medications were initiated, but the patient required emergency extracorporeal membrane oxygenation (ECMO) for circulatory support.

Findings:

  • Extracorporeal membrane oxygenation (ECMO) provided crucial hemodynamic support, allowing for precise control of induced hypothermia.

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  • Continuous hypothermia at 34°C for 36 hours post-rhythm normalization prevented JET recurrence.
  • The infant recovered uneventfully after 3.5 days of ECMO support.

    • Implications:

    • ECMO is a suitable first-line emergency support for infants with JET, offering reliable circulatory assistance and controlled hypothermia.
    • This case highlights the critical role of advanced extracorporeal support in managing life-threatening arrhythmias in neonates after cardiac procedures.
    • Aggressive management including ECMO and sustained hypothermia can lead to favorable outcomes in severe postoperative JET.