Target intelligence / Profile preview

Coronary sinus (CS)

Target: CS
Molecular classification: Other (anatomical cardiac vein/vascular structure)

Overview

The coronary sinus is the largest vein of the heart, located in the posterior atrioventricular groove between the left atrium and left ventricle. It acts as the main collector of venous blood from the myocardium, draining deoxygenated blood into the right atrium. Several cardiac veins, including the great, middle, and small cardiac veins, and the oblique vein of the left atrium, converge to form the coronary sinus[1][2][4]. Its anatomical prominence and variability make it a crucial landmark for cardiac electrophysiology and surgical procedures[3][5]. The coronary sinus is not a molecular or pharmacological target but is essential for venous drainage and as a conduit for interventional access in certain heart procedures. Congenital anomalies of the coronary sinus, such as atresia or diverticulum, may play a role in disease pathogenesis and procedural complications[3].

Other names: Valve of coronary sinus (refers to its ostium)Thebesian valve (refers to the valve guarding the opening)Great cardiac vein confluence (refers to its origin)CS

Mechanism of action

Not applicable. Drugs do not target the coronary sinus as a molecular entity.

Biological functions

Drainage of deoxygenated blood from the myocardiumVenous return from heart muscle to right atriumLandmark for cardiac conduction system (used in surgical procedures)Conduit for catheters and leads in electrophysiological procedures

Disease associations

Cardiovascular disease (e.g., congenital heart defects, pulmonary hypertension, cardiac arrhythmias)Congenital anomalies (coronary sinus atresia, diverticulum, enlargement)

Safety considerations

Variability and anomalies in coronary sinus anatomy can complicate cardiac procedures (e.g., catheter ablation, pacemaker and left ventricular lead placement)Coronary sinus enlargement or obstruction can be associated with certain congenital defects or hemodynamic disordersAwareness of coronary sinus variants is essential for avoiding procedural complications (e.g., misplacement or injury during surgery/intervention)

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