The Vieussens valve of the coronary sinus is a prominent[1] valve at the end of the
great cardiac vein, marking the commencement of the
coronary sinus.[2][1] It is often a flimsy valve composed of one to three leaflets. It is present in 80-90% of individuals. It serves as an anatomical landmark. It is clinically important because it is often an obstruction to
catheters in 20% of patients.[3][4]
^Ho S, Becker AE. Chapter 37. Anatomy of Electrophysiology. In: Fuster V, Walsh RA, Harrington RA, eds. Hurst's The Heart. 13th ed. New York: McGraw-Hill; 2011.
http://www.accessmedicine.com/content.aspx?aID=7812984. Accessed November 1, 2011.
^Strohmer B (September 2008). "Valve of Vieussens: an obstacle for left ventricular lead placement". Can J Cardiol24 (9): e63.
PMC2643183.
PMID18787728.