Conjoined double internal mammary artery grafting

Area of Science:

• Cardiovascular Surgery
• Cardiac Surgery
• Vascular Grafting

Background:

• Coronary artery disease (CAD) management often relies on arterial and venous grafts.
• Internal mammary artery (IMA) grafting is a preferred method due to its long-term patency.
• Challenges in graft availability and patient anatomy necessitate alternative surgical strategies.

Purpose of the Study:

• To evaluate the efficacy and outcomes of conjoined double internal mammary artery (IMA) grafting in patients with coronary artery disease.
• To assess the applicability of this technique in specific clinical scenarios where conventional grafting may be limited.

Main Methods:

• Retrospective analysis of 82 patients undergoing double IMA grafting for CAD.
• Detailed description of the "conjoined" double IMA technique, where one IMA is used as a free graft proximally connected to another.
• Identification of specific indications for the conjoined technique, including insufficient vein supply, diseased aortic wall, and complex coronary lesions.

Main Results:

• All 82 patients achieved angina-free status postoperatively.
• Follow-up up to 16 months showed sustained symptom relief.
• Recatheterization in six patients confirmed 100% patency of IMA-to-IMA (n=6) and distal anastomoses (n=26).

Conclusions:

• Conjoined double IMA grafting is a safe and effective option for selected patients with coronary artery disease.
• This technique addresses limitations associated with traditional grafting methods.
• It provides excellent long-term patency and symptom relief in patients with complex coronary anatomy or graft material limitations.