Branched internal mammary conduit permits non-sequenced total arterial revascularization

Area of Science:

• Cardiovascular Surgery
• Vascular Grafting
• Coronary Artery Disease Treatment

Background:

• Total arterial coronary revascularization (TACR) is increasingly favored for improved long-term patency and reduced mortality.
• Current TACR strategies, often using sequential or composite grafts, face limitations in conduit availability and surgical complexity.
• The right internal mammary artery (RIMA) and left internal mammary artery (LIMA) are primary conduits, but maximizing their use is crucial.

Purpose of the Study:

• To present a novel technique for achieving nonsequential 3-vessel total arterial coronary revascularization.
• To demonstrate the utility of utilizing the preserved distal bifurcation of the right internal mammary artery.
• To broaden the application of TACR in patients with multivessel coronary disease.

Main Methods:

• The study employed bilateral internal mammary artery (BIMA) grafts.
• A nonsequential grafting strategy was utilized.
• The preserved distal bifurcation of the RIMA was incorporated into the revascularization plan.

Main Results:

• Successful nonsequential 3-vessel total arterial coronary revascularization was achieved.
• The use of the distal RIMA bifurcation expanded conduit availability and surgical options.
• This approach offers a viable strategy for select patients with complex coronary anatomy.

Conclusions:

• Utilizing distal internal mammary artery branches is a feasible strategy for total arterial coronary revascularization.
• This technique can overcome limitations of conduit availability and surgical complexity in TACR.
• The approach expands treatment opportunities for patients with multivessel coronary disease requiring arterial grafting.