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Cor Triatriatum Dexter: Embryology, Presentation and Management.

Sarah Kerr1, Amy Hong2, Aarti Bhat2

  • 1Seattle Children's Hospital, Seattle, WA, USA. Sarah.Kerr@seattlechildrens.org.

Pediatric Cardiology
|January 19, 2026
PubMed
Summary

Cor triatriatum dexter (CTD) is a rare congenital heart defect. Surgical repair in neonates showed good medium-term outcomes with short bypass times and hospital stays.

Keywords:
Congenital heart diseaseCor triatriatum dexterCritical congenital heart disease screeningEchocardiographyNeonatal cardiac surgeryNeonatal hypoxemia

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Area of Science:

  • Congenital Cardiology
  • Pediatric Cardiac Surgery
  • Medical Diagnostics

Background:

  • Cor triatriatum dexter (CTD) is a rare congenital cardiac anomaly.
  • Clinical presentations range from neonatal hypoxemia to adult incidental diagnosis.
  • Management strategies for CTD are not well-defined due to limited literature.

Purpose of the Study:

  • To report a single-center series of four patients with CTD.
  • To review clinical presentation, echocardiographic findings, surgical management, and outcomes.
  • To evaluate the efficacy and safety of surgical repair for CTD.

Main Methods:

  • Retrospective review of four pediatric patients diagnosed with CTD.
  • Analysis of clinical data, echocardiographic findings, and surgical procedures.
  • Assessment of postoperative outcomes and medium-term follow-up.

Main Results:

  • All four neonates presented with hypoxemia and failed pulse oximetry screening.
  • Echocardiography confirmed a redundant membrane consistent with CTD.
  • Surgical repair was performed at an average of 21 days-of-life with short cardiopulmonary bypass times and hospital stays.

Conclusions:

  • Surgical repair of CTD is feasible with favorable short-term outcomes.
  • Patients experienced no cardiac symptoms at medium-term follow-up.
  • An individualized approach to management is recommended, often favoring early surgical intervention.