left coronary artery

(redirected from Left main coronary artery)
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Related to Left main coronary artery: right coronary artery

left cor·o·nar·y ar·ter·y (LCA),

[TA]
origin, left aortic sinus; distribution, it divides into two major branches, an anterior interventricular that descends in the anterior interventricular sulcus, and a circumflex branch that passes to the diaphragmatic surface of the left ventricle; gives atrial, ventricular, and atrioventricular branches.
Synonym(s): arteria coronaria sinistra [TA]

left coronary artery

one of a pair of branches from the ascending aorta, arising in the left posterior aortic sinus, dividing into the left interventricular artery and the circumflex branch, and supplying both ventricles and the left atrium. Compare right coronary artery.

left cor·o·nar·y ar·te·ry

(left kōr'ŏ-nar-ē ahr'tĕr-ē) [TA]
Origin, left aortic sinus; distribution, it divides into two major branches, an anterior interventricular, which descends in the anterior interventricular sulcus, and a circumflex branch, which passes to the diaphragmatic surface of the left ventricle; gives atrial, ventricular, and atrioventricular branches.
Synonym(s): arteria coronaria sinistra.

left coronary artery

Abbreviation: LCA
One of the two main epicardial arteries that feed the heart muscle. It originates from the left aortic sinus, a dilation in the aorta just behind one of the leaflets of the aortic valve. At the level of the junction between the atria and the ventricles, the left coronary splits into the circumflex artery, which runs to the left along the outside of the heart in the atrioventricular groove, and the left anterior descending artery, which continues down the interventricular groove. Among the heart regions it supplies are most of left atrium, the left ventricle, and the interventricular septum.
Synonym: left main coronary artery See: aorta (Branches of aorta)for illus.; heart (The heart) for illus.
See also: artery
References in periodicals archive ?
Spontaneous left main coronary artery dissection complicated by pseudoaneurysm formation in pregnancy: role of CT coronary angiography.
Multislice spiral computed tomography for the evaluation of stent patency after left main coronary artery stenting: a comparison with conventional coronary angiography and intravascular ultrasound.
Randomized trial of stents versus bypass surgery for left main coronary artery disease.
April 12 /PRNewswire-FirstCall/ -- Boston Scientific Corporation today announced that enrollment has begun in its clinical trial known as SYNTAX, which will compare the performance of drug- eluting stents with cardiac surgery in the most complex patient subsets: those with coronary artery disease in all three coronary arteries, in the left main coronary artery, or both.
For example, the use of coronary artery bypass surgery instead of medication for patients with left main coronary artery disease results in a cost-effectiveness ratio of about $2300 to $5600 per year of life saved.
Herein we presented a case of aortic stenosis that had a small distance of coronary to annulus, treated successfully with transfemoral TAVI under left main coronary artery (LMCA) protection.
CTCA demonstrated a high-grade narrowing at the ostium of the left main coronary artery (Figure 1, arrowheads).
corporate partner Boston Scientific Corporation ("BSC") today announced that enrollment has begun in its clinical trial known as SYNTAX, which will compare the performance of drug-eluting stents with cardiac surgery in the most complex patient subsets: those with coronary artery disease in all three coronary arteries, in the left main coronary artery, or both.
Due the critical location of blockage in the left main coronary artery, and his weakened heart muscle, Mr.
Circumflex artery runs at a 90-degree angle from the left main coronary artery, and as a result, embolizations to the left system involving the circumflex artery are rare (5).