Right coronary artery: Difference between revisions
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Caption = Sternocostal surface of heart. (Right coronary artery visible at left.) | | Caption = Sternocostal surface of heart. (Right coronary artery visible at left.) | | ||
Image2 = Cardiac vessels.png | | Image2 = Cardiac vessels.png | | ||
Caption2 = '''ARTERIES:'''<BR>RCA = right coronary<BR>AB = [[atrial branches of coronary arteries|atrial branches]]<BR>SANB = [[sinuatrial nodal artery|sinuatrial nodal]]<BR>RMA = [[right marginal branch of right coronary artery|right marginal]]<BR>LCA = [[left coronary artery|left coronary]]<BR>CB = [[circumflex branch of left coronary artery|circumflex branch]]<BR>LAD/AIB = [[anterior interventricular branch of left coronary artery|anterior interventricular]]<BR>LMA = [[left marginal artery|left marginal]]<BR>PIA/PDA = [[posterior interventricular artery|posterior descending]]<BR>MARG = [[left marginal artery|left marginal]]<BR>AVN = [[atrioventricular nodal branch|atrioventricular nodal]]<BR><BR>'''VEINS:'''<BR>SCV = [[small cardiac vein|small cardiac]]<BR>ACV = [[anterior cardiac veins|anterior cardiac]]<BR>AIV/GCV = [[great cardiac vein|great cardiac]]<BR>MCV = [[middle cardiac vein|middle cardiac]]<BR>CS = [[coronary sinus]] | | Caption2 = '''ARTERIES:'''<BR>RCA = right coronary<BR>AB = [[atrial branches of coronary arteries|atrial branches]]<BR>SANB = [[sinuatrial nodal artery|sinuatrial nodal]]<BR>RMA = [[right marginal branch of right coronary artery|right marginal]]<BR>LCA = [[left coronary artery|left coronary]]<BR>CB = [[circumflex branch of left coronary artery|circumflex branch]]<BR>LAD/AIB = [[anterior interventricular branch of left coronary artery|anterior interventricular]]<BR>LMA = [[left marginal artery|left marginal]]<BR>PIA/PDA = [[posterior interventricular artery|posterior descending]]<BR>MARG = [[left marginal artery|left marginal]]<BR>AVN =[[atrioventricular nodal branch|atrioventricular nodal]]<BR><BR>'''VEINS:'''<BR>SCV = [[small cardiac vein|small cardiac]]<BR>ACV = [[anterior cardiac veins|anterior cardiac]]<BR>AIV/GCV = [[great cardiac vein|great cardiac]]<BR>MCV = [[middle cardiac vein|middle cardiac]]<BR>CS = [[coronary sinus]] | | ||
BranchFrom = [[ascending aorta]] | | BranchFrom = [[ascending aorta]] | | ||
BranchTo = | | BranchTo = | | ||
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==Branches of the Right Coronary Artery== | ==Branches of the Right Coronary Artery== | ||
* | * The first branch of the RCA is usually the conus artery, which either arises within the first few millimeters of the RCA or from a separate ostium in the anterior [[aortic sinus]]. | ||
*In 85% of patients, the RCA gives off the [[posterior descending artery | * The RCA also supplies the [[SA nodal artery]] in 60% of patients. In just under 40% of patients, the SA nodal artery is supplied by the [[left circumflex artery]]. In the remaining cases, SA node receives a dual blood supply. | ||
* In 85% of patients, the RCA gives off the [[posterior descending artery|posterior descending artery (PDA)]]. In the other 15% of cases, the PDA is given off by the[[left circumflex artery]]. The PDA supplies the inferior wall, [[ventricular septum]], and the posteromedial [[papillary muscle]]. | |||
==Additional images== | ==Additional images== | ||
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Image:Aortic stenosis rheumatic, gross pathology 20G0014 lores.jpg|[[Aorta]] and coronary arteries at [[autopsy]]. The proximal portion of the RCA and its [[ostium]] can be seen at the lower left. | Image:Aortic stenosis rheumatic, gross pathology 20G0014 lores.jpg|[[Aorta]] and coronary arteries at [[autopsy]]. The proximal portion of the RCA and its [[ostium]] can be seen at the lower left. | ||
</gallery> | </gallery> | ||
{{Arteries of chest}} | {{Arteries of chest}} | ||
Revision as of 16:47, 27 August 2013
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
The right coronary artery (or RCA) originates above the right cusp of the aortic valve. It travels down the right atrioventricular groove, towards the crux of the heart. In addition to supplying blood to the right ventricle (RV), the RCA supplies 25% to 35% of the left ventricle (LV).
Branches of the Right Coronary Artery
- The first branch of the RCA is usually the conus artery, which either arises within the first few millimeters of the RCA or from a separate ostium in the anterior aortic sinus.
- The RCA also supplies the SA nodal artery in 60% of patients. In just under 40% of patients, the SA nodal artery is supplied by the left circumflex artery. In the remaining cases, SA node receives a dual blood supply.
- In 85% of patients, the RCA gives off the posterior descending artery (PDA). In the other 15% of cases, the PDA is given off by theleft circumflex artery. The PDA supplies the inferior wall, ventricular septum, and the posteromedial papillary muscle.
Additional images
-
Base of ventricles exposed by removal of the atria. -
The arch of the aorta, and its branches. -
Plan of the branches. -
Diagram of a myocardial infarction. -
