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Left Ventricle
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Cardiac Veins
Coronary Sinus Ostium Coronary Sinus Posterior Interventricular Vein Posterior Vein of the Left Ventricle Left Marginal Vein Great Cardiac Vein 3D Modeling Venogram
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The ostium of the left marginal vein is typically at the distal end of the coronary sinus. In most human hearts we have observed a valve associated with the ostium as this venous drainage enters the coronary sinus.

This cardiac vein returns deoxygenated blood (metabolic waste products) from the lateral wall of the left ventricle.

Importance in device delivery:
Left heart pacing can be achieved via placing leads into the left marginal vein; in the diseased heart this region of the heart will often be the region of latest ventricular depolarization.

Other Nomenclature:
The left marginal veins are also referred to as lateral veins. This set of veins can be further subdivided to antero-lateral, left lateral, and postero-lateral veins depending on their position on the heart.




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