LIMA
Pronunciation: LIE-ma
Also written as: LIMA — Left Internal Mammary Artery
Left internal mammary artery, the preferred arterial conduit for coronary bypass grafting.
Full Definition
The left internal mammary artery (LIMA) is considered the gold standard conduit for coronary artery bypass surgery, particularly for grafting to the left anterior descending artery. This arterial graft demonstrates superior long-term patency rates compared to venous conduits, with 10-year patency exceeding 90%. The LIMA is typically left attached to its origin from the subclavian artery and anastomosed distally to the target coronary vessel. Its use significantly improves long-term survival outcomes.
Usage
Usage note: Always spell out on first use in patient-facing documents; distinguish from RIMA (right internal mammary artery).
In Context
- "The LIMA was anastomosed to the LAD with excellent flow characteristics." — Operative report
- "Use of LIMA grafting is associated with improved long-term survival in coronary bypass patients." — Clinical research