Radial artery supply to the left mammary artery in a redo coronary bypass

Area of Science:

• Cardiovascular Surgery
• Vascular Grafting
• Myocardial Revascularization

Background:

• The left internal thoracic artery (LITA) Y graft is a common technique for myocardial revascularization.
• Left subclavian artery disease can complicate LITA Y graft procedures, potentially impacting safety and efficacy.
• Reoperations involving LITA Y grafts require careful consideration of graft origin issues.

Observation:

• A critical stenosis at the origin of a bilateral internal thoracic artery Y graft was successfully managed.
• A free radial artery graft was utilized to bypass the subclavian artery stenosis.
• The bypass procedure was performed off-pump, connecting the left thoracic artery to the ascending aorta.

Findings:

• The off-pump bypass using a radial artery graft yielded excellent immediate results.
• This case demonstrates successful management of left subclavian artery disease in the context of a composite Y graft.
• The radial artery proved to be a viable conduit for arterial revascularization.

Implications:

• Radial artery grafts are a feasible and effective option for total arterial revascularization.
• This approach offers a solution for complex cases involving LITA Y grafts and subclavian artery disease.
• The findings support the long-term efficacy of using radial artery grafts in challenging coronary bypass scenarios.