CARDIAC Section 2: Coronaries Flashcards
What are the three (3) coronary cusps?
Right
Left
Non-coronary (POSTERIOR)
Right coronary artery branches
- Acute Marginal (AM)
- AV Node branch
- Posterior Descending (PDA)
CONUS - 1/2 of the time this is the first branch
Left coronary artery branches
- Left anterior descending (LAD)
a. Diagnonals (D1) and (D2)
b. Septal Branches - Circumflex (LCX)
a. Marginal Branches (M1) and (M2)
65-80% of the Posterior Descending Artery (PDA) is supplied by what coronary artery?
Right Coronary Artery (RCA)
20% of the posterior descending artery (PDA) is supplied by?
Left Coronary Artery (LCA)
RCA perfuses SA node __%?
RCA perfuses SA node 60%
RCA perfuses AV node _%?
RCA perfuses AV node 90%
Coronary Dominance is determined by?
what vessel gives rise to the PDA and posterior left ventricular branches (Most are right - 85%_
if the PDA arises from the RCA and
the posterior left ventricular branches arise from the LCX
Co-dominant
Diagnosis
LCA from the right coronary sinus
LCA from the Right coronary sinu courses where?
Between the aorta Pulmonary artery
Coronary origin abnomrality that needs fixing
RCA from left cusp or LCA from right cusp?
LCA from the right cusp.
RCA from theleft cusp gets fixed IF asymptomatic
What is the MOST COMMON cause of sudden cardiac death in young patients?
Hypertrophic cardiomyopathy.
What is the 2nd Most common cause of sudden cardiac death in young patients?
Malignant coronary artery with origin from the oppisit sinus.
What are the two types of Anomalous Left Coronary Artery from Pulmonary artery (ALCAPA)
- Infantile (They die early) - CHF + Dilated cardiomyopathy
- Adult
Diagnosis
Anomalous Left Coronary Artery from Pulmonary artery (ALCAPA)
This is an intramyocardial course of a coronary artery (usually the LAD).
Myocardial Bridging
