internal mammary artery


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Related to internal mammary artery: Internal mammary vein, internal mammary artery bypass

in·ter·nal tho·rac·ic ar·ter·y

[TA]
origin, subclavian; branches, pericardiacophrenic, anterior intercostal, sternal, mediastinal, thymic, bronchial, muscular, and perforating branches, and bifurcates into the musculophrenic and superior epigastric.

internal mammary artery

internal mammary artery

Abbreviation: IMA
A branch of the subclavian artery that runs down the anterior wall of the thorax lateral to the sternum. Its branches include the anterior intercostal arteries, which supply blood to the anterior (sternal) segments of the upper nine intercostal spaces, and the musculophrenic arteries, which supply blood to the anterior (sternal) segments of intercostal spaces 7 to 11. The internal mammary artery continues in the abdominal wall as the superior epigastric artery. The left internal mammary artery (LIMA) is the artery most commonly used in coronary artery bypass graft surgery.
Synonym: internal thoracic artery
See also: artery
References in periodicals archive ?
Diagnosis and endovascular treatment of an internal mammary artery injury.
Internal mammary artery angiography should be a routine component of diagnostic coronary angiography.
Comparison of internal mammary artery ligation and sham operation for angina pectoris.
This publication in Innovations validates the value of using an automated stapling device on the internal mammary artery graft when working on a beating heart, as it connects the artery with similar patency results to traditional hand-sewn anastomoses," said study author Husam H.
At BUMC, urgent coronary artery bypass graft surgery was performed employing an internal mammary artery pedicle graft to the left anterior descending coronary artery; the saphenous vein graft was attached to the aorta and to the 3 coronary arteries distally.
The long-term benefits of surgery to graft the left internal mammary artery (LIMA) to the left anterior descending coronary artery (LAD) are well known; it is the `gold-standard' of heart bypass surgery today.
They scored hospitals in key performance areas: risk-adjusted medical mortality, risk-adjusted surgical mortality, risk-adjusted complications, core measures score, percentage of coronary bypass patients with internal mammary artery use, procedure volume, severity-adjusted average length of stay, and wage- and severity-adjusted average cost.
The left internal mammary artery should be made as long as possible to help avoid excessive tension when the heart is elevated after the LAD graft is completed.

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