AACN CSC REVIEW COURSE SESSION 1,2,4,5-8 Study
Guide COMPLETE QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+||BRAND NEW!!
70% - ,,,,,,answer,,,,..at rest the myocardium extracts ___% of
available oxygen
30-35% - ,,,,,,answer,,,,..normal SvO2 in heart
60-80% - ,,,,,,answer,,,,..normal SvO2 in body
coronary perfusion pressure - ,,,,,,answer,,,,..DBP - LVEDP
> 40 mmHg - ,,,,,,answer,,,,..normal coronary perfusion pressure
auto-regulation - ,,,,,,answer,,,,..coronary circulation is a constant
due to _______________________.
aortic - ,,,,,,answer,,,,..the coronary arteries originate behind the
respective ________ valve leaflets
left main coronary artery - ,,,,,,answer,,,,..bifurcates into the
LAD and Cx arteries; 2-5cm long; not grafted directly
,PA and aorta - ,,,,,,answer,,,,..the left main is inaccessible
without dividing the _____ and _____
left main, circumflex, RCA - ,,,,,,answer,,,,..what are the 3 main
segments of the coronary circulation
circumflex artery - ,,,,,,answer,,,,..coronary artery that courses
AV groove beneath LAA; has obtuse marginal branches
LAD - ,,,,,,answer,,,,..supplies anterior wall, ant 2/3 septum,
post/inf LBB, bundle of his; RBB, LV apex
Cx artery - ,,,,,,answer,,,,..supplies SA node (45%), AV node
(10%), inferior LV, lateral LV wall, LA, post/inf LBB
tertiary left main - ,,,,,,answer,,,,..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 - ,,,,,,answer,,,,..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 - ,,,,,,answer,,,,..coronary artery that arises from aorta and
courses AV groove; bifurcates at junction of RA and LA
lead I - ,,,,,,answer,,,,..lead that looks at Cx artery from left arm
to right arm
,lead II - ,,,,,,answer,,,,..lead that looks at RCA from left leg to
right arm
lead III - ,,,,,,answer,,,,..lead that looks at RCA from left leg to
left arm
V1 and V2 - ,,,,,,answer,,,,..EKG leads that look at LAD at the
septum
V3 and V4 - ,,,,,,answer,,,,..leads that look at LAD at the anterior
wall
V5 and V6 - ,,,,,,answer,,,,..leads that look at the Cx artery at LV
lateral wall
Left main - ,,,,,,answer,,,,..60% of patients with ____________
lesions also have lessons of other coronary arteries, commonly
triple vessel disease.
70% - ,,,,,,answer,,,,..ischemia-induced VT is caused by ___%
stenosis of a major non-left main coronary artery.
left main - ,,,,,,answer,,,,..aka the Widowmaker
aortic - ,,,,,,answer,,,,..severe _______ stenosis increases the risk
for post-operative stroke after a CABG.
, ascending aorta - ,,,,,,answer,,,,..location where aortic cross-
clamping occurs
diastole - ,,,,,,answer,,,,..cardioplegia is induced in
______________
10 degrees celsius - ,,,,,,answer,,,,..for every ______ degrees
Celsius you decrease body temperature, oxygen consumption
decreases by 50%.
28-34 degrees celsius - ,,,,,,answer,,,,..pts are usually cooled to
this temperature in the OR depending on how long they're on
CPB for.
retrograde - ,,,,,,answer,,,,..method in which a cannula is inserted
into the coronary sinus and delivers the cardioplegic solution
from the "back door" to coronary circulation
antegrade - ,,,,,,answer,,,,..method in which the cannula is
inserted into the proximal aorta to infuse the cardioplegic agent
into the coronaries more directly. may be limited by coronary
lesions
bivalirudin - ,,,,,,answer,,,,..preferred over argatroban in HIT
patients d/t shorter half life during CPB or even off-pump
bypass
increased clotting in oxygenator of CPB circuit -
,,,,,,answer,,,,..why is bivalirudin unsafe to use in a low-
flow/circulatory arrest state in HIT patients on CPB?
Guide COMPLETE QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+||BRAND NEW!!
70% - ,,,,,,answer,,,,..at rest the myocardium extracts ___% of
available oxygen
30-35% - ,,,,,,answer,,,,..normal SvO2 in heart
60-80% - ,,,,,,answer,,,,..normal SvO2 in body
coronary perfusion pressure - ,,,,,,answer,,,,..DBP - LVEDP
> 40 mmHg - ,,,,,,answer,,,,..normal coronary perfusion pressure
auto-regulation - ,,,,,,answer,,,,..coronary circulation is a constant
due to _______________________.
aortic - ,,,,,,answer,,,,..the coronary arteries originate behind the
respective ________ valve leaflets
left main coronary artery - ,,,,,,answer,,,,..bifurcates into the
LAD and Cx arteries; 2-5cm long; not grafted directly
,PA and aorta - ,,,,,,answer,,,,..the left main is inaccessible
without dividing the _____ and _____
left main, circumflex, RCA - ,,,,,,answer,,,,..what are the 3 main
segments of the coronary circulation
circumflex artery - ,,,,,,answer,,,,..coronary artery that courses
AV groove beneath LAA; has obtuse marginal branches
LAD - ,,,,,,answer,,,,..supplies anterior wall, ant 2/3 septum,
post/inf LBB, bundle of his; RBB, LV apex
Cx artery - ,,,,,,answer,,,,..supplies SA node (45%), AV node
(10%), inferior LV, lateral LV wall, LA, post/inf LBB
tertiary left main - ,,,,,,answer,,,,..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 - ,,,,,,answer,,,,..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 - ,,,,,,answer,,,,..coronary artery that arises from aorta and
courses AV groove; bifurcates at junction of RA and LA
lead I - ,,,,,,answer,,,,..lead that looks at Cx artery from left arm
to right arm
,lead II - ,,,,,,answer,,,,..lead that looks at RCA from left leg to
right arm
lead III - ,,,,,,answer,,,,..lead that looks at RCA from left leg to
left arm
V1 and V2 - ,,,,,,answer,,,,..EKG leads that look at LAD at the
septum
V3 and V4 - ,,,,,,answer,,,,..leads that look at LAD at the anterior
wall
V5 and V6 - ,,,,,,answer,,,,..leads that look at the Cx artery at LV
lateral wall
Left main - ,,,,,,answer,,,,..60% of patients with ____________
lesions also have lessons of other coronary arteries, commonly
triple vessel disease.
70% - ,,,,,,answer,,,,..ischemia-induced VT is caused by ___%
stenosis of a major non-left main coronary artery.
left main - ,,,,,,answer,,,,..aka the Widowmaker
aortic - ,,,,,,answer,,,,..severe _______ stenosis increases the risk
for post-operative stroke after a CABG.
, ascending aorta - ,,,,,,answer,,,,..location where aortic cross-
clamping occurs
diastole - ,,,,,,answer,,,,..cardioplegia is induced in
______________
10 degrees celsius - ,,,,,,answer,,,,..for every ______ degrees
Celsius you decrease body temperature, oxygen consumption
decreases by 50%.
28-34 degrees celsius - ,,,,,,answer,,,,..pts are usually cooled to
this temperature in the OR depending on how long they're on
CPB for.
retrograde - ,,,,,,answer,,,,..method in which a cannula is inserted
into the coronary sinus and delivers the cardioplegic solution
from the "back door" to coronary circulation
antegrade - ,,,,,,answer,,,,..method in which the cannula is
inserted into the proximal aorta to infuse the cardioplegic agent
into the coronaries more directly. may be limited by coronary
lesions
bivalirudin - ,,,,,,answer,,,,..preferred over argatroban in HIT
patients d/t shorter half life during CPB or even off-pump
bypass
increased clotting in oxygenator of CPB circuit -
,,,,,,answer,,,,..why is bivalirudin unsafe to use in a low-
flow/circulatory arrest state in HIT patients on CPB?
