ICU : Hemodynamics Complete Exam
Set Questions and Verified Answers
(solutions)
atrial systole? -
correct answer ✅atrial contraction forces a small amount of
additional blood into ventricles
"atrial kick"
isovolumetric contraction? -
correct answer ✅all heart valves are closed, pressure builds
within the ventricles with no volume change
ventricular systole? -
correct answer ✅ventricular ejection portion
isovolumetric relaxation? -
correct answer ✅occurs after ejection, period when all four valves
are closed and the pressure within ventricular chambers falls below
atrial pressure without any changes in volume
ventricular diastole? -
correct answer ✅blood flows passively from periphery and the
pulmonary vasculature into the ventricles
,ICU : Hemodynamics Complete Exam
Set Questions and Verified Answers
(solutions)
cardiac cycle in order? -
correct answer ✅-atrial systole
-isovolumetric contraction
-ventricular systole
-isovolumetric relaxation
-ventricular diastole
changes in blood volume related to the cardiovascular system -
correct answer ✅hemodynamics
-the goal if forward flow of blood / perfusion
oxygen delivery (D02) is dependent upon ? -
correct answer ✅-cardiac output
-hemoglobin
-SaO2
if any or all of these components are abnormal then that can affect
oxygen delivery to the tissues
,ICU : Hemodynamics Complete Exam
Set Questions and Verified Answers
(solutions)
normal DO2? -
correct answer ✅1000 ml
normal vO2? -
correct answer ✅250 ml
-(1/4) of normal DO2
tissue oxygen metabolism or the consumption of oxygen at that
tissue level -
correct answer ✅vO2
normal O2 reserve? -
correct answer ✅750 ml
1000 - 25- = 750
what does O2 reserve mean? -
correct answer ✅what is left over, the amount of oxygen left in
venous blood after tissue oxygen metabolism
, ICU : Hemodynamics Complete Exam
Set Questions and Verified Answers
(solutions)
-if they do not have much O2 reserve they might decompensate
quicker
normal Sv02? -
correct answer ✅60-80%
what is SvO2? -
correct answer ✅contains blood from the SVC & IVC which results
in Mixed blood from the upper and lower body tissues
-mixed venous oxygen saturation.
-need swan ganz (PA cath to get this)
A low SvO2 indicates that the tissues are extracting a higher
percentage of oxygen from the blood than normal. In otherwords, a
decreased SvO2 indicates that the cardiac output is not high
enough to meet tissue oxygen needs.
we can measure O2 reserve by? -
correct answer ✅looking at the Sv02
-true representation of tissue consumption from upper and lower
body
Set Questions and Verified Answers
(solutions)
atrial systole? -
correct answer ✅atrial contraction forces a small amount of
additional blood into ventricles
"atrial kick"
isovolumetric contraction? -
correct answer ✅all heart valves are closed, pressure builds
within the ventricles with no volume change
ventricular systole? -
correct answer ✅ventricular ejection portion
isovolumetric relaxation? -
correct answer ✅occurs after ejection, period when all four valves
are closed and the pressure within ventricular chambers falls below
atrial pressure without any changes in volume
ventricular diastole? -
correct answer ✅blood flows passively from periphery and the
pulmonary vasculature into the ventricles
,ICU : Hemodynamics Complete Exam
Set Questions and Verified Answers
(solutions)
cardiac cycle in order? -
correct answer ✅-atrial systole
-isovolumetric contraction
-ventricular systole
-isovolumetric relaxation
-ventricular diastole
changes in blood volume related to the cardiovascular system -
correct answer ✅hemodynamics
-the goal if forward flow of blood / perfusion
oxygen delivery (D02) is dependent upon ? -
correct answer ✅-cardiac output
-hemoglobin
-SaO2
if any or all of these components are abnormal then that can affect
oxygen delivery to the tissues
,ICU : Hemodynamics Complete Exam
Set Questions and Verified Answers
(solutions)
normal DO2? -
correct answer ✅1000 ml
normal vO2? -
correct answer ✅250 ml
-(1/4) of normal DO2
tissue oxygen metabolism or the consumption of oxygen at that
tissue level -
correct answer ✅vO2
normal O2 reserve? -
correct answer ✅750 ml
1000 - 25- = 750
what does O2 reserve mean? -
correct answer ✅what is left over, the amount of oxygen left in
venous blood after tissue oxygen metabolism
, ICU : Hemodynamics Complete Exam
Set Questions and Verified Answers
(solutions)
-if they do not have much O2 reserve they might decompensate
quicker
normal Sv02? -
correct answer ✅60-80%
what is SvO2? -
correct answer ✅contains blood from the SVC & IVC which results
in Mixed blood from the upper and lower body tissues
-mixed venous oxygen saturation.
-need swan ganz (PA cath to get this)
A low SvO2 indicates that the tissues are extracting a higher
percentage of oxygen from the blood than normal. In otherwords, a
decreased SvO2 indicates that the cardiac output is not high
enough to meet tissue oxygen needs.
we can measure O2 reserve by? -
correct answer ✅looking at the Sv02
-true representation of tissue consumption from upper and lower
body
