left circumflex artery


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left circumflex artery

Abbreviation: LCx
An artery that branches from the left main coronary artery and runs to the left, in the atrioventricular groove, i.e., the coronary sulcus, around the lateral and posterior sides of the heart. It supplies blood to portions of the left ventricle and left atrium.
Synonym: circumflex coronary artery; left circumflex coronary artery See: heart (The heart) for illus.
See also: artery
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
Congenital absence of left circumflex artery is a very rare coronary artery anomaly and is usually incidentally detected during various cardiac imaging modalities.
Caption: Figure 3: (a) Computed tomography after successful revascularization of the left anterior descending artery; the short and mildly calcified chronic total occlusion of the left circumflex artery; a stump presents after sending out the small branch (yellow arrows).
The patient did not have CTO of the left circumflex artery as described in his cardiac catheterizations previously but instead had severe stenosis of his anomalous circumflex artery.
Diagnostic left coronary angiography revealed that the left ventricular apex was supplied by the left circumflex artery
The coronary sinus, which receives drainage from the great, middle, and posterior left ventricular veins, is a low-pressure venous conduit that runs along the atrioventricular groove, which is in close proximity to the left circumflex artery [5].
Jude, Light Lab) was then undertaken from the distal vessel back to the ostium of the left circumflex artery. This demonstrated that the retained guidewire filament was covered by neointimal hyperplasia over approximately 50% of its length (Figure 2), with evidence of tissue bridges (Figure 3).
According to the proportional length of each vessel segment in the coronary artery tree, segments were graded with different maximum numbers of points: 5 points for the left main stem, 20 for the left anterior descending artery, 10 for the main diagonal branch, 5 for the first septal branch, 20 for the left circumflex artery, 10 for the obtuse marginal and posterolateral vessels, 20 for the right coronary artery, and 10 for the right posterior descending branch.
Objective: Sinoatrial node (SAN) artery originates from proximal segment of right coronary artery (RCA) or from left circumflex artery. Sinoatrial node artery artery originating from posterolateral (PL) branch of RCA is very rare.
It travels from the aorta and passes between the pulmonary trunk and the left atrial appendage, under which it divides into left anterior descending artery and the left circumflex artery. Various anomalies have been described regarding its length, site of origin, and its course.