The left ventricular lead position was localized based on LAO view and was divided into three equal regions as shown in [Figure 1]b: the anterolateral cardiac vein
(ALCV), the lateral cardiac vein
(LCV), and the posterolateral cardiac vein
The coronary sinus commences at the point where the oblique vein of the left atrium joins the great cardiac vein
. The sinus receives the middle and small cardiac veins
close to its junction with the right atrium.
 showed that the PL lines were shortest among the three endocardial lines but closest to left circumflex artery and great cardiac vein
. Myocardium was thickest at the AL line, and sinus nodal arteries were frequently found on the AM and AL lines.
Its contents include the great cardiac vein
and the anterior interventricular artery.
The implant is designed to be positioned, adjusted, and gently anchored in the coronary sinus/great cardiac vein
(GCV) to reshape the annulus around the mitral valve to reduce mitral regurgitation.
Despite this adjustment, veins other than the proximal coronary veins (the CS, middle cardiac vein
, small cardiac vein
, and posterior vein) were not visualized optimally.
Gupta, "Coil embolization of an iatrogenic coronary artery to cardiac vein
fistula after rotational atherectomy," Journal of Interventional Cardiology, vol.
Successful epicardial ablation of idiopathic mitral annular ventricular tachycardia from the great cardiac vein
. Pacing Clin Electrophysiol 2012; 5: 120-3.