LIMA
Pronunciation: LIE-mah
Also written as: LIMA — Left Internal Mammary Artery
Left internal mammary artery, the preferred conduit for surgical coronary bypass grafting to the left anterior descending artery.
Full Definition
The left internal mammary artery (LIMA), also referred to as the left internal thoracic artery (LITA), represents the gold standard conduit for surgical revascularization of the left anterior descending coronary artery system. This arterial graft demonstrates superior long-term patency rates compared to saphenous vein grafts, with studies showing 90% patency at 10 years. LIMA grafts rarely develop atherosclerosis due to their unique endothelial characteristics and size match with coronary targets. In interventional cardiology contexts, LIMA anatomy becomes relevant when treating patients with prior coronary artery bypass surgery, as interventions may involve native vessel treatment or graft intervention, requiring specialized techniques and equipment.
Usage
Usage note: LIMA preferred over LITA in interventional cardiology contexts; always capitalize.
In Context
- "The patient had patent LIMA to LAD with significant stenosis in the native right coronary artery." — Angiographic findings
- "LIMA graft intervention requires specialized guide catheter selection and technique." — Technical procedure note