1
AACN CSC REVIEW COURSE SESSION 1
EXAM WITH CORRECT ACTUAL
QUESTIONS AND CORRECTLY WELL
DEFINED ANSWERS LATEST ALREADY
GRADED A+ 2025 – 2026
at rest the myocardium extracts ___% of available oxygen - (ANSWER)70%
normal SvO2 in heart - (ANSWER)30-35%
normal SvO2 in body - (ANSWER)60-80%
DBP - LVEDP - (ANSWER)coronary perfusion pressure
normal coronary perfusion pressure - (ANSWER)> 40 mmHg
coronary circulation is a constant due to _______________________. -
(ANSWER)auto-regulation
the coronary arteries originate behind the respective ________ valve leaflets -
(ANSWER)aortic
, 2
bifurcates into the LAD and Cx arteries; 2-5cm long; not grafted directly -
(ANSWER)left main coronary artery
the left main is inaccessible without dividing the _____ and _____ - (ANSWER)PA
and aorta
what are the 3 main segments of the coronary circulation - (ANSWER)left main,
circumflex, RCA
coronary artery that courses AV groove beneath LAA; has obtuse marginal
branches - (ANSWER)circumflex artery
supplies anterior wall, ant 2/3 septum, post/inf LBB, bundle of his; RBB, LV apex -
(ANSWER)LAD
supplies SA node (45%), AV node (10%), inferior LV, lateral LV wall, LA, post/inf
LBB - (ANSWER)Cx artery
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 -
(ANSWER)tertiary left main
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 - (ANSWER)RCA
AACN CSC REVIEW COURSE SESSION 1
EXAM WITH CORRECT ACTUAL
QUESTIONS AND CORRECTLY WELL
DEFINED ANSWERS LATEST ALREADY
GRADED A+ 2025 – 2026
at rest the myocardium extracts ___% of available oxygen - (ANSWER)70%
normal SvO2 in heart - (ANSWER)30-35%
normal SvO2 in body - (ANSWER)60-80%
DBP - LVEDP - (ANSWER)coronary perfusion pressure
normal coronary perfusion pressure - (ANSWER)> 40 mmHg
coronary circulation is a constant due to _______________________. -
(ANSWER)auto-regulation
the coronary arteries originate behind the respective ________ valve leaflets -
(ANSWER)aortic
, 2
bifurcates into the LAD and Cx arteries; 2-5cm long; not grafted directly -
(ANSWER)left main coronary artery
the left main is inaccessible without dividing the _____ and _____ - (ANSWER)PA
and aorta
what are the 3 main segments of the coronary circulation - (ANSWER)left main,
circumflex, RCA
coronary artery that courses AV groove beneath LAA; has obtuse marginal
branches - (ANSWER)circumflex artery
supplies anterior wall, ant 2/3 septum, post/inf LBB, bundle of his; RBB, LV apex -
(ANSWER)LAD
supplies SA node (45%), AV node (10%), inferior LV, lateral LV wall, LA, post/inf
LBB - (ANSWER)Cx artery
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 -
(ANSWER)tertiary left main
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 - (ANSWER)RCA
