The left Kugel's artery is an uncommon but potentially important collateral vessel present in 3.6% of patients with significant circumflex or right coronary artery disease.
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Recognition of left Kugel's artery may refine collateral assessment on arteriography; Level 3 data leave its clinical relevance open.
The left Kugel's artery is an uncommon but sometimes important collateral between the proximal circumflex artery and whatever artery supplies the crux of the heart. It passes anterior to the mitral valve ring, coursing in the interatrial septum, to anastomose usually with the atrioventricular node artery. The left Kugel's artery was prospectively identified on coronary arteriograms in 3.6% of patients with significant disease in dominant circumflex or right coronary arteries with associated collateral circulation. It was occasionally as large as 1 mm in diameter. The angiographic anatomy of this vessel is described.
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Grollman et al. (1978) studied this question.
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