Fistulization of the right coronary artery to the superior vena cava

In the normal heart the sinoatrial (SA) node serves as the principal pacemaker and determines the heart rate. The SA node consists of groups of pacemaker cells marked by their ability to spontaneously depolarize and are located at the junction of the right atrium and the superior vena cava. The blood supply to the SA node is variable with the sinus nodal artery arising from the right coronary artery in 60% percent of cases and from the left circumflex artery in 40% of cases. Following depolarization of the SA nodal cells, the signal traverses the atrium before arriving at the atrioventricular (AV) node. The AV node is marked by its ability to delay impulse propagation, which allows for coordinated contraction of the atria and ventricles. The AV nodal artery arises from the right coronary artery in 90% of cases and from the left circumflex artery in 10% of cases. After exiting the AV node, the impulse is transmitted through the bundle of His, the right and left bundle branches, and ultimately exits the terminal Purkinje fibers of the conduction system into the myocardium near the apex of the heart.

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Giant right coronary artery to coronary sinus fistula associated with severe tricuspid regurgitation and persistent left superior vena cava

International Journal of Cardiology ◽

10.1016/j.ijcard.2016.08.003 ◽

2016 ◽

Vol 223 ◽

pp. 40-42 ◽

Cited By ~ 1

Author(s):

Isabelle Oddou ◽

Mi-Young Jeung ◽

Catherine Roy ◽

Soraya El Ghannudi

Keyword(s):

Coronary Artery ◽

Superior Vena Cava ◽

Right Coronary Artery ◽

Coronary Sinus ◽

Tricuspid Regurgitation ◽

Superior Vena ◽

Vena Cava ◽

Left Superior Vena Cava ◽

Severe Tricuspid Regurgitation ◽

Persistent Left Superior Vena

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Giant Right Coronary Artery Aneurysm Associated with a Fistula Draining into the Superior Vena Cava

Texas Heart Institute Journal ◽

10.14503/thij-15-5450 ◽

2016 ◽

Vol 43 (4) ◽

pp. 360-362 ◽

Cited By ~ 4

Author(s):

Ahmet Dolapoglu ◽

David A. Ott

Keyword(s):

Coronary Artery ◽

Superior Vena Cava ◽

Right Coronary Artery ◽

Coronary Artery Aneurysm ◽

Superior Vena ◽

Vena Cava ◽

Artery Aneurysm ◽

Giant Coronary Artery Aneurysm ◽

Coronary Cameral Fistula ◽

Artery Disease

Giant coronary artery aneurysm associated with a coronary–cameral fistula is an uncommon condition. Such aneurysms are usually associated with other cardiac diseases, such as coronary atherosclerosis, and therefore might augment myocardial ischemia in adults. The main indications for surgical intervention are severe coexisting coronary artery disease, evidence of embolization, and aneurysmal enlargement or rupture. We describe a large right coronary artery aneurysm and a coronary–cameral fistula that drained into the superior vena cava. The surgical repair was successful.

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