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Massive alterations of the left internal thoracic artery late after repair for aortic coarctation

Brigitte R Osswald1, Stefan Knipp, Ingo Wiese

  • 1Department for Thoracic and Cardiovascular Surgery, University of Essen, Essen, Germany. brigitte.osswald@uk-essen.de

The Annals of Thoracic Surgery
|January 24, 2009
PubMed

Insights

Preoperative imaging is crucial before left internal thoracic artery harvesting for coronary artery bypass grafting. This prevents discovering severe atherosclerosis, ensuring graft viability and patient safety.

Area of Science:

  • Cardiovascular Surgery
  • Vascular Biology
  • Medical Imaging

Background:

  • Coronary artery bypass grafting (CABG) commonly utilizes the left internal thoracic artery (LITA).
  • Previous aortic coarctation repair can influence LITA quality.
  • Graft failure due to unforeseen pathology necessitates careful preoperative assessment.

Observation:

  • A 68-year-old male patient presented for CABG 34 years post-aortic coarctation repair.
  • LITA harvesting revealed a no-flow situation, indicating compromised graft patency.
  • Graft transection exposed extensive atherosclerotic changes within the LITA.

Findings:

  • Massive atherosclerotic alterations were found in the LITA, rendering it unusable.
  • The findings suggest that reduced shear stress post-aortic repair does not guarantee vascular remodeling.
  • Severe atherosclerosis can develop in the LITA decades after initial repair.

Implications:

  • Mandatory preoperative LITA angiography during coronary angiography is recommended.
  • This imaging can prevent unnecessary LITA harvesting and potential complications.
  • Highlights the need for comprehensive vascular assessment in patients with prior cardiac surgeries.

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