What is a coronary sinus?

The coronary sinus is the major venous tributary of the greater cardiac venous system; it is responsible for draining most of the deoxygenated blood leaving the myocardium.

Do all veins drain into coronary sinus?

The coronary sinus receives drainage from most epicardial ventricular veins, including the oblique vein of the left atrium (and other left and right atrial veins), the great cardiac vein, the posterior vein of the left ventricle, the left marginal vein, and the posterior interventricular vein.

What opens into coronary sinus?

Anatomical Parts The coronary sinus opens into the atrium, between the orifice of the inferior vena cava and the atrioventricular opening. The opening of coronary sinus returns blood from the substance of the heart and is protected by a semicircular valve, the valve of the coronary sinus (valve of Thebesius).

What is coronary sinus dissection?

Introduction: The risk of coronary sinus (CS) dissection when placing a CS lead for cardiac resynchronization therapy (CRT) increases with challenging coronary anatomy and/or forceful manipulation of the catheter.

Why coronary sinus is called sinus?

The name comes from the Latin corona, meaning crown, since this vessel forms a partial circle around the heart. The coronary sinus drains into the right atrium, at the coronary sinus orifice, an opening between the inferior vena cava and the right atrioventricular orifice or tricuspid valve.

What is a sinus of the heart?

The sinus node is an area of specialized cells in the upper right chamber of the heart. This area controls your heartbeat. Normally, the sinus node creates a steady pace of electrical impulses.

How do you know you have coronary sinus?

The coronary sinus starts at the junction of the great cardiac vein and the oblique vein of the left atrium. The end of the great cardiac vein and the coronary sinus is marked by the Vieussens valve. The coronary sinus runs transversely in the left atrioventricular groove on the posterior side of the heart.

Which vein continues as the coronary sinus?

great cardiac vein
The great cardiac vein commonly continues until it merges with the coronary sinus [7]. The lateral veins, also known as the left marginal veins or the obtuse marginal veins, course along the left side of the heart and drain the left ventricular myocardium into the great cardiac vein or coronary sinus [7].

Which vein does not drain into coronary sinus?

anterior cardiac veins
The anterior cardiac veins do not drain into the coronary sinus but drain directly into the right atrium. Some small veins known as Thebesian veins drain directly into any of the four chambers of the heart.

Does coronary sinus have valves?

The valve of the coronary sinus (Thebesian valve) is a semicircular fold of the lining membrane of the right atrium, at the orifice of the coronary sinus. It is situated at the base of the inferior vena cava….Valve of coronary sinus.

Valve of the coronary sinus
TA2 4030
FMA 9242
Anatomical terminology

What is pericardium sinus?

The pericardial sinuses are impressions in the pericardial sac formed between the points where great vessels enter it. Pericardial sinus. Posterior wall of the pericardial sac, showing the lines of reflection of the serous pericardium on the great vessels. ( Transverse sinus labeled at center.

Is sinus arrhythmia serious?

Keep in mind that for the majority of people, a sinus arrhythmia is neither dangerous nor problematic. Even if your doctor suspects you have this irregular heartbeat, he may not order the test to check for it. That’s because an EKG can be costly, and a sinus arrhythmia is considered a benign condition.