Coronaries Flashcards
Origin of RCA
Sinus of valsalva
Perfusion of RCA
right ventricle, right atrium, left atrium, SA node, AV node
Location of RCA
Travels down right coronary sulcus towards Crux of the heart
Origin of Conus artery
Proximal RCA
Location of Conus artery
Small, early branch of RCA
Perfusion of Conus artery
Right ventricular outflow track
Origin of SA nodal artery
Runs proximally off the RCA in most patients
Location of SA nodal artery
Turns posteriorly below the SVC opening
Perfusion of SA nodal artery
Right and left atrium, SA node
Origin of Right ventricular branch
Runs proximally and laterally off the RCA
Location of the Right ventricular branch
Mid RCA, runs around lateral portion of right ventricle
Perfusion of Right ventricular branch
Anterior and lateral portion of right ventricle
Origin of Circumflex
Branches off the Left Main
Location of circumflex
Travels behind the coronary sinus and wraps around the left posterior side of the heart in the groove between left atrium and ventricle
Perfusion of circumflex
Posterior portion of the left atrium and left ventricle
Origin of obtuse marginal(s)
Arise from the lateral circumflex
Location of the obtuse marginal(s)
Come off the circumflex at obtuse angle and travel laterally down the side of the heart towards apex
Perfusion of obtuse marginal(s)
Lateral wall of left ventricle
Origin of Left main
Sinus of valsalva
Location of left main
Superior to the left cusp of aortic valve, runs backwards then forward around pulmonary arch
Perfusion of Left main
Entire left side of heart, except posterior section of ventricular septum
Origin of left arterial descending
Branches off Left main
Location of LAD
Sits between left and right ventricles, running along septal groove
Perfusion of LAD
Anterior and inferior portions of the left ventricle and the anterior septum along with the apex
Origin of Diagonals
Run proximal to distal on the LAD
Location of the Diagonals
Branch off the LAD diagonally across the anterior wall
Perfusion of diagonals
Outer/lateral wall of heart
Origin of Septals
Right sided branches of the LAD
Location of Septals
Branch off at 90 degrees to surface of heart
Perfusion of the Septals
High portion of the ventricular septum
Origin of Atrial circumflex
Proximal circumflex
Location of atrial circumflex
Runs along posterior left atrium
Perfusion of atrial circumflex
Left atrium
Origin of acute marginal
Branch off RCA from proximal to mid portion
Location of acute marginal
Travels along anterior portion of the RV
Perfusion of acute marginal
Inferior and diaphragmatic part of RV
Origin of PDA
Branches off RCA generally, but can come off circumflex (dominance depending)
Location of PDA
Runs in the posterior interventricular sulcus towards the apex
Perfusion of PDA
Diaphragmatic ventricular septum
Origin of posterior lateral branch (PLA)
Usually arises from RCA along with PDA, but can come off the circumflex depending on dominance
Location of posterior lateral branch
Extends from the crux of heart to the left side of the heart in the atrioventricular sulcus
Perfusion of posterior lateral branch
Left ventricular walk
Origin of AV nodal artery
Usually from RCA but occasionally from circumflex (dominance dependent)
Location of AV nodal artery
Runs through central fibrous body of the membranous atrioventricular septum
Perfusion of AV nodal artery
AV node and low part of atrial septum
Where does the RCA and LCA come out of
Trunk of aorta
