left coronary artery


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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 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 ?
Anomalous origin of the left coronary artery from the pulmonary artery (Bland-White-Garland syndrome) in adult patients: long-term follow-up after surgery.
In 12 patient stem cells were introduced directly into the left coronary artery and in 3 cases: into both the left and the right coronary arteries.
Clinical findings alone are not sufficient in the diagnosis of anomalous origin of the left coronary artery from the pulmonary artery.
Echocardiography may also demonstrate the anomalous left coronary artery with Doppler flow confirming the reversal of flow.2 Coronary artery angiography will additionally demonstrate dilated tortuous vessels and reversal of flow into the pulmonary artery on delayed images.
Taniuchi, "Left main stem coronary artery stenting in a 3-month-old child after anomalous left coronary artery from pulmonary artery repair," Pediatric Cardiology, vol.
Clinical characteristics, diagnosis and treatment of children with anomalous origin of the left coronary artery from the pulmonary artery in each age group.
In most of the cases it is a branch of right coronary artery (RCA), but in 35% cases it may arise from circumflex branch of left coronary artery (LCA).
This artery branches off the left coronary artery in the heart and supplies blood to the front of the left side of the heart.
Echocardiography revealed dilated coronary arteries (13 mm for the right coronary artery and 9 mm for the left coronary artery).
Anomalous origin of the right coronary artery from the left coronary sinus is 6 times more common than the contrary situation of the left coronary artery originating from the right coronary sinus.
The coronaries were looked and palpated for thickened or calcified areas and one section each from left coronary artery, right coronary artery, left circumflex artery & aorta was given.
The left coronary artery is divided into left main coronary artery (LM) and left circumflex branch (LCX).