AACN CSC Review Course Session 1 Exam Question And Answer 2025

AACN CSC Review Course Session 1
Exam Question And Answer 2025
70% - correct answers ✅✅at rest the myocardium
extracts ___% of available oxygen


30-35% - correct answers ✅✅normal SvO2 in heart


60-80% - correct answers ✅✅normal SvO2 in body


coronary perfusion pressure - correct answers ✅✅DBP -
LVEDP


> 40 mmHg - correct answers ✅✅normal coronary
perfusion pressure


auto-regulation - correct answers ✅✅coronary circulation
is a constant due to _______________________.


aortic - correct answers ✅✅the coronary arteries
originate behind the respective ________ valve leaflets


left main coronary artery - correct answers ✅✅bifurcates
into the LAD and Cx arteries; 2-5cm long; not grafted
directly


PA and aorta - correct answers ✅✅the left main is
inaccessible without dividing the _____ and _____

, AACN CSC Review Course Session 1
Exam Question And Answer 2025
left main, circumflex, RCA - correct answers ✅✅what are
the 3 main segments of the coronary circulation


circumflex artery - correct answers ✅✅coronary artery
that courses AV groove beneath LAA; has obtuse marginal
branches


LAD - correct answers ✅✅supplies anterior wall, ant 2/3
septum, post/inf LBB, bundle of his; RBB, LV apex


Cx artery - correct answers ✅✅supplies SA node (45%),
AV node (10%), inferior LV, lateral LV wall, LA, post/inf LBB


tertiary left main - correct answers ✅✅3 vessels of equal
diameter between LAD and Cx; supplies large area of LV
b/t LAD and Cx arteries; usually subepicardial; may give pt
a perfusion advantage


RCA - correct answers ✅✅supplies SA node (55%), AV
node (90%), bundle of his, RA and RV, inferior LV, post. 1/3
of septum, post/inf division of left bundle


RCA - correct answers ✅✅coronary artery that arises
from aorta and courses AV groove; bifurcates at junction
of RA and LA