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 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 ?
Diagnosis of anomalous left coronary artery by Doppler color flow mapping: distinction from other causes of dilated cardiomyopathy.
In the case series reported by Dilawar and Ahmad (23) involving 5 patients with age range of 2-12 months, admitted with symptoms of tachypnoea and poor feeding with irritability, anomalous origin of left coronary artery from pulmonary artery was confirmed in 4 patients by echocardiography and coronary angiography.
Surgical strategy to establish a dual-coronary system for the management of anomalous left coronary artery origin from the pulmonary artery.
Tseng KF Anomalous origin of left coronary artery from the pulmonary trunk in a mildly symptomatic adult female.
On 38th hospital day, we performed coronary angiography, which demonstrated multiple giant aneurysms with sluggish blood flow on the entire RCA and a stenosis on the proximal anterior descending branch of the left coronary artery.
An atypical left coronary artery (LCA) ostia originating from the right sinus of Valsalva was demonstrated just posterior to the right coronary ostia and its course was posterior to the aorta (Fig.
The anomalous origin of the left coronary artery from the right aortic sinus: is the coronary angiography still a 'gold standard'?
Two fistulas from the left coronary artery (LMCA), one fistula from the left anterior descending artery (LAD) and two fistulas from the right coronary artery (RCA) were mostly draining in to pulmonary artery (Fig.
In the remaining patients, an additional catheter was required to engage the left coronary artery in 9 (12%), the right coronary artery in 5 (6%), and ventriculography in 1 (2%) patients.
CAFs originated from the left coronary artery in 69% and from the right coronary artery (RCA) in 31% of the subjects.
Expanding indications for PCABS for congenital heart diseases and their surgical complications PCABS utilizing the ITA is certainly applicable for coronary artery problems other than KD, such as coronary obstruction after arterial switch operations for complete transposition of the great arteries, congenital agenesis of the left coronary trunk, anomalous origin of the left coronary artery from the pulmonary artery, iatrogenic injury of the coronary artery during cardiac operations, and other congenital coronary anomalies.