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Related Experiment Videos

Valve replacement after T-grafting: "beating heart surgery".

Hendrick B Barner1, Thoralf M Sundt, Cliff K Choong

  • 1Division of Cardiothoracic Surgery, Washington University School of Medicine, St Louis, Missouri, USA. hendrick.barner@tenethealth.com

The Annals of Thoracic Surgery
|January 24, 2006
PubMed
Summary

Patent internal thoracic and radial artery T-grafts adequately perfuse the heart during reoperations. This technique avoids T-graft injury from clamping, saving time and simplifying procedures.

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Area of Science:

  • Cardiovascular Surgery
  • Cardiac Reoperation
  • Graft Patency

Background:

  • Internal thoracic artery (ITA) and radial artery (RA) T-grafts are crucial for myocardial perfusion.
  • Reoperative cardiac surgery presents unique challenges, particularly regarding graft integrity.

Purpose of the Study:

  • To evaluate the adequacy of myocardial perfusion using patent T-grafts during cardiac reoperation.
  • To assess the safety and efficacy of avoiding T-graft clamping during aortic or mitral valve redo operations.

Main Methods:

  • Retrospective analysis of 1,023 patients with prior T-grafting undergoing reoperation.
  • Five patients with patent T-grafts underwent aortic (3) or mitral valve (2) redo operations.
  • The heart was allowed to beat-during-operation (BDO) after initial cardioplegia, without clamping the T-graft.

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Main Results:

  • Adequate cardiac function resumed rapidly after a single dose of cardioplegia.
  • No intraoperative or postoperative myocardial infarction was observed.
  • The patent T-graft remained intact, demonstrating successful perfusion without injury.

Conclusions:

  • Patent internal thoracic and radial artery T-grafts provide adequate myocardial perfusion during cardiac reoperation.
  • Avoiding T-graft clamping during beating-heart reoperations is a safe and effective strategy.
  • This approach simplifies the procedure, saves time, and prevents graft damage.