AACN CSC Review Course Session 1 Exam Study
Guide.
at rest the myocardium extracts ___% of available oxygen - Correct Answer 70%
normal SvO2 in heart - Correct Answer 30-35%
normal SvO2 in body - Correct Answer 60-80%
DBP - LVEDP - Correct Answer coronary perfusion pressure
normal coronary perfusion pressure - Correct Answer > 40 mmHg
coronary circulation is a constant due to _______________________. - Correct Answer
auto-regulation
the coronary arteries originate behind the respective ________ valve leaflets - Correct
Answer aortic
bifurcates into the LAD and Cx arteries; 2-5cm long; not grafted directly - Correct Answer
left main coronary artery
the left main is inaccessible without dividing the _____ and _____ - Correct Answer PA
and aorta
what are the 3 main segments of the coronary circulation - Correct Answer left main,
circumflex, RCA
coronary artery that courses AV groove beneath LAA; has obtuse marginal branches -
Correct Answer circumflex artery
supplies anterior wall, ant 2/3 septum, post/inf LBB, bundle of his; RBB, LV apex - Correct
Answer LAD
supplies SA node (45%), AV node (10%), inferior LV, lateral LV wall, LA, post/inf LBB -
Correct 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 - Correct 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 - Correct Answer RCA
coronary artery that arises from aorta and courses AV groove; bifurcates at junction of RA
and LA - Correct Answer RCA
lead that looks at Cx artery from left arm to right arm - Correct Answer lead I
lead that looks at RCA from left leg to right arm - Correct Answer lead II
lead that looks at RCA from left leg to left arm - Correct Answer lead III
EKG leads that look at LAD at the septum - Correct Answer V1 and V2
leads that look at LAD at the anterior wall - Correct Answer V3 and V4
leads that look at the Cx artery at LV lateral wall - Correct Answer V5 and V6
60% of patients with ____________ lesions also have lessons of other coronary arteries,
commonly triple vessel disease. - Correct Answer Left main
ischemia-induced VT is caused by ___% stenosis of a major non-left main coronary
artery. - Correct Answer 70%
aka the Widowmaker - Correct Answer left main
severe _______ stenosis increases the risk for post-operative stroke after a CABG. -
Correct Answer aortic
location where aortic cross-clamping occurs - Correct Answer ascending aorta
cardioplegia is induced in ______________ - Correct Answer diastole
Guide.
at rest the myocardium extracts ___% of available oxygen - Correct Answer 70%
normal SvO2 in heart - Correct Answer 30-35%
normal SvO2 in body - Correct Answer 60-80%
DBP - LVEDP - Correct Answer coronary perfusion pressure
normal coronary perfusion pressure - Correct Answer > 40 mmHg
coronary circulation is a constant due to _______________________. - Correct Answer
auto-regulation
the coronary arteries originate behind the respective ________ valve leaflets - Correct
Answer aortic
bifurcates into the LAD and Cx arteries; 2-5cm long; not grafted directly - Correct Answer
left main coronary artery
the left main is inaccessible without dividing the _____ and _____ - Correct Answer PA
and aorta
what are the 3 main segments of the coronary circulation - Correct Answer left main,
circumflex, RCA
coronary artery that courses AV groove beneath LAA; has obtuse marginal branches -
Correct Answer circumflex artery
supplies anterior wall, ant 2/3 septum, post/inf LBB, bundle of his; RBB, LV apex - Correct
Answer LAD
supplies SA node (45%), AV node (10%), inferior LV, lateral LV wall, LA, post/inf LBB -
Correct 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 - Correct 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 - Correct Answer RCA
coronary artery that arises from aorta and courses AV groove; bifurcates at junction of RA
and LA - Correct Answer RCA
lead that looks at Cx artery from left arm to right arm - Correct Answer lead I
lead that looks at RCA from left leg to right arm - Correct Answer lead II
lead that looks at RCA from left leg to left arm - Correct Answer lead III
EKG leads that look at LAD at the septum - Correct Answer V1 and V2
leads that look at LAD at the anterior wall - Correct Answer V3 and V4
leads that look at the Cx artery at LV lateral wall - Correct Answer V5 and V6
60% of patients with ____________ lesions also have lessons of other coronary arteries,
commonly triple vessel disease. - Correct Answer Left main
ischemia-induced VT is caused by ___% stenosis of a major non-left main coronary
artery. - Correct Answer 70%
aka the Widowmaker - Correct Answer left main
severe _______ stenosis increases the risk for post-operative stroke after a CABG. -
Correct Answer aortic
location where aortic cross-clamping occurs - Correct Answer ascending aorta
cardioplegia is induced in ______________ - Correct Answer diastole
