MEDSURG CARDIAC EXAM QUESTIONS AND
CORRECT DETAILED ANSWERS WELL VERIFIED
.GRADED A+
Arteries carry - ANSWER -oxygenated blood away from the heart
Veins carry - ANSWER -deoxygenated blood
Depolarization - ANSWER -Contraction of the heart (systole)
Repolarization - ANSWER -Relaxation of the heart (diastole)
,effective refractory period - ANSWER -phase in which cells are
incapable of depolarizing
Relative refractory period - ANSWER -phase in which cells require
stronger-than-normal stimulus to depolarize
Cardiac cycle - ANSWER -A complete heartbeat consisting of
contraction and relaxation of both atria and both ventricles
V1 lead placement - ANSWER -right side of the sternum, between 4th
and 5th ribs
V2 lead placement - ANSWER -left side of the sternum across from V1
V3 lead placement - ANSWER -halfway between V2 and V4
V4 lead placement - ANSWER -between the 5th and 6th ribs in a
straight down line
V5 lead placement - ANSWER -Between V4 and V6
, V6 lead placement - ANSWER -horizontally even with V4 in a straight
line down from the middle of the armpit
Cardiac output - ANSWER -the amount of blood pumped by the heart
per minute
Ejection fraction - ANSWER -measurement of the volume percentage
of left ventricular contents ejected with each contraction
Ejection fraction range - ANSWER -50-70%
Cardiac output equation - ANSWER -CO = HR x SV
Stroke volume equation - ANSWER -end diastolic volume - end systolic
volume
Preload - ANSWER -degree of stretch of the cardiac muscle fibers at the
end of diastole
Afterload - ANSWER -the amount of resistance to ejection of blood
from the ventricle
CORRECT DETAILED ANSWERS WELL VERIFIED
.GRADED A+
Arteries carry - ANSWER -oxygenated blood away from the heart
Veins carry - ANSWER -deoxygenated blood
Depolarization - ANSWER -Contraction of the heart (systole)
Repolarization - ANSWER -Relaxation of the heart (diastole)
,effective refractory period - ANSWER -phase in which cells are
incapable of depolarizing
Relative refractory period - ANSWER -phase in which cells require
stronger-than-normal stimulus to depolarize
Cardiac cycle - ANSWER -A complete heartbeat consisting of
contraction and relaxation of both atria and both ventricles
V1 lead placement - ANSWER -right side of the sternum, between 4th
and 5th ribs
V2 lead placement - ANSWER -left side of the sternum across from V1
V3 lead placement - ANSWER -halfway between V2 and V4
V4 lead placement - ANSWER -between the 5th and 6th ribs in a
straight down line
V5 lead placement - ANSWER -Between V4 and V6
, V6 lead placement - ANSWER -horizontally even with V4 in a straight
line down from the middle of the armpit
Cardiac output - ANSWER -the amount of blood pumped by the heart
per minute
Ejection fraction - ANSWER -measurement of the volume percentage
of left ventricular contents ejected with each contraction
Ejection fraction range - ANSWER -50-70%
Cardiac output equation - ANSWER -CO = HR x SV
Stroke volume equation - ANSWER -end diastolic volume - end systolic
volume
Preload - ANSWER -degree of stretch of the cardiac muscle fibers at the
end of diastole
Afterload - ANSWER -the amount of resistance to ejection of blood
from the ventricle
