left coronary artery

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Related to Left coronary: Left main coronary artery, left descending 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 ?
Anomalous origin of the left coronary artery from the pulmonary artery (ALCAPA) syndrome or Bland-White-Garland syndrome, first described in 1933, [2] constitutes a rare congenital condition that affects 1 of 300.
2 In the neonatal period, the baby is asymptomatic as there is anterograde flow of desaturated blood from the pulmonary artery to the left coronary artery.
Table 1 Effects of ethanolic extract of Radix Scrophulariae (EERS) on hemodynamic parameters of rats with ventricular remodeling by left coronary artery ligation (CAL) ([x.
It did not show any anastomosis with a similar left coronary branch.
Occlusion of the left anterior descending artery can be identified accurately on a standard 12-lead ECG, but acute occlusion of the circumflex branch of the left coronary artery (also called the circumflex artery) does not always produce the ECG changes typical of AMI.
One year after discharge, echocardiography showed marked left coronary enlargement with a distal 6 mm aneurysm.
The youngster suffered countless small heart attacks after being born with no left coronary artery, and at one stage she was given less than an hour to live.
Anomalous right or left coronary artery from the contralateral coronary sinus: "high-risk" abnormalities in the initial coronary artery course and heterogeneous clinical outcomes.
The rabbits - bred specifically for scientific research - undergo surgery to have their left coronary arteries tied so they develop heart failure.
In one investigation, the researchers relied on dogs and a device that gradually narrows the left coronary artery.
This second generation system being studied builds on the success of AMIHOT II and includes the additional benefits of shortening the treatment time to 60 minutes and broadening the treatment area to the entire left coronary system so that no ischemic area goes untreated.
This artery branches off the left coronary artery in the heart and supplies blood to the front of the left side of the heart.