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NURS 370: Final Questions with 100% Correct Answers
UPDATED!!!
What is stroke volume? - ANSWER The volume that leaves the
left ventricle per pump.
Stroke volume is an important indicator of _______ - ANSWER
SV is an important indicator of how *efficiently the heart can
meet the body's demands* for adequate perfusion.
When HR increases, Stroke volume (SV) ________ - ANSWER
When heart rate increases, stroke volume tends to DECREASE
due to the ventricles pumping faster than they can fill
Vice versa: A decreased heart rate allows for the ventricles to fill
up more leading to an increased stroke volume
S/S of Decreased Stroke Volume - ANSWER
Dizziness/Lightheaded
Cool
Pale
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Poor/delayed cap refill
Fill in the blanks: CO = ____ x _____ - ANSWER CO = HR x SV
What are the 3 components of SV - ANSWER Preload
Afterload
Contractility
Define Preload - ANSWER How much blood we have to eject
Th stretch of the ventricles
What conditions increase preload - ANSWER Hypervolemia
Heart failure
Regurgitation of cardiac valves
Define afterload - ANSWER How much force needed to get
blood out of the ventricles and in the vessels.
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Conditions that increase afterload - ANSWER HTN
Vasoconstriction
Conditions that decrease afterload - ANSWER Hypotension
Vasodilation
Define contractility - ANSWER Strength of the heart pumping
muscle.
What conditions impact heart contractility - ANSWER Heart
failure
electrolyte disturbances
What drug has an effect on one or more of the stroke volume
components - ANSWER Cardiac meds can affect one or more of
the components: preload, afterload, contractility
SA node conducts at what speed - ANSWER 60-100 bpm
Describe the conduction pathway of the heart - ANSWER SA
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AV
Bundle of HIS
Purkinje Fibers
T or F: If the SA node fails, the AV node takes over, and so on -
ANSWER True
The AV node conducts at what speed - ANSWER 40-60 bpm
The purkinje fibers conducts at what speed - ANSWER 20-40
bpm
Define Bundle Branch Block - ANSWER If nodes are destroyed
then it relies on cell to cell conduction which is slow conduction
(Slow transition of messages to contract)
Explain a cardiac monitor (Telemetry) - ANSWER All of the
cardiac monitoring goes through this computer/screen and is
hooked up 24/7 and is monitored by healthcare providers
Diff from 12 lead ECG
NURS 370: Final Questions with 100% Correct Answers
UPDATED!!!
What is stroke volume? - ANSWER The volume that leaves the
left ventricle per pump.
Stroke volume is an important indicator of _______ - ANSWER
SV is an important indicator of how *efficiently the heart can
meet the body's demands* for adequate perfusion.
When HR increases, Stroke volume (SV) ________ - ANSWER
When heart rate increases, stroke volume tends to DECREASE
due to the ventricles pumping faster than they can fill
Vice versa: A decreased heart rate allows for the ventricles to fill
up more leading to an increased stroke volume
S/S of Decreased Stroke Volume - ANSWER
Dizziness/Lightheaded
Cool
Pale
,2|Page
Poor/delayed cap refill
Fill in the blanks: CO = ____ x _____ - ANSWER CO = HR x SV
What are the 3 components of SV - ANSWER Preload
Afterload
Contractility
Define Preload - ANSWER How much blood we have to eject
Th stretch of the ventricles
What conditions increase preload - ANSWER Hypervolemia
Heart failure
Regurgitation of cardiac valves
Define afterload - ANSWER How much force needed to get
blood out of the ventricles and in the vessels.
,3|Page
Conditions that increase afterload - ANSWER HTN
Vasoconstriction
Conditions that decrease afterload - ANSWER Hypotension
Vasodilation
Define contractility - ANSWER Strength of the heart pumping
muscle.
What conditions impact heart contractility - ANSWER Heart
failure
electrolyte disturbances
What drug has an effect on one or more of the stroke volume
components - ANSWER Cardiac meds can affect one or more of
the components: preload, afterload, contractility
SA node conducts at what speed - ANSWER 60-100 bpm
Describe the conduction pathway of the heart - ANSWER SA
, 4|Page
AV
Bundle of HIS
Purkinje Fibers
T or F: If the SA node fails, the AV node takes over, and so on -
ANSWER True
The AV node conducts at what speed - ANSWER 40-60 bpm
The purkinje fibers conducts at what speed - ANSWER 20-40
bpm
Define Bundle Branch Block - ANSWER If nodes are destroyed
then it relies on cell to cell conduction which is slow conduction
(Slow transition of messages to contract)
Explain a cardiac monitor (Telemetry) - ANSWER All of the
cardiac monitoring goes through this computer/screen and is
hooked up 24/7 and is monitored by healthcare providers
Diff from 12 lead ECG
