NSG 3130 EXAM 4 QUESTIONS AND ANSWERS DETAILED UPDA… EXAM
P R O F E S S I O N A L P R A C T I C E M AT E R I A L S
NSG 3130 Exam 4 Questions
and Answers Detailed
Updated 2026/2027
(Rationales)
Verified Answers Exam Ready With Rationales 90 QUESTIONS
DOCUMENT OVERVIEW
This document provides 90 updated NSG 3130 exam questions with provided correct
answers and detailed rationales. It covers fundamental concepts in cardiovascular and
related physiological systems. This resource is ideal for students to study, review material,
and prepare for certification exams.
TOPICS
Cardiac Anatomy and Physiology Q1–Q10
Cardiovascular Diagnostics and Labs Q11–Q17
Therapeutics and Patient Teaching Q18–Q25
Risk Factors and Prevention Q26–Q38
Cardiovascular Pathophysiology Q39–Q65
Respiratory Physiology and Interventions Q66–Q90
Page 1
, E XA M Q U EST I O N S
Q1 QUESTION 1 OF 90
Components of the heart
RESPONSE
the pump
the electrical system
the vascular system
the blood volume
RATIONALE
The heart functions as a dual pump, circulating blood through pulmonary and systemic circuits.
This pumping action is coordinated by an intrinsic electrical conduction system. Effective cardiac
output also depends on the patency of the vascular system and adequate blood volume to maintain
perfusion.
Q2 QUESTION 2 OF 90
Preload
RESPONSE
amount of blood and pressure in the ventricle at the end of diastole. Increases due to increase
of volume.
RATIONALE
Preload represents the ventricular stretch at the end of diastole, directly influenced by the volume
of blood filling the ventricle. An increase in ventricular volume, such as from venous return, elevates
this end-diastolic pressure and stretch. This physiological state is crucial for determining stroke
volume via the Frank-Starling mechanism.
Q3 QUESTION 3 OF 90
Afterload
Page 2
, RESPONSE
the resistance that has to be exceeded for the ventricle to eject the blood during systole.
Increases due to HTN or vasoconstriction.
RATIONALE
Afterload represents the impedance the left ventricle must overcome to eject blood into the aorta
during systole. Elevated systemic vascular resistance, such as from hypertension or
vasoconstriction, directly increases this resistance, thereby increasing afterload. This increased
workload can strain the ventricle over time.
Q4 QUESTION 4 OF 90
cardiac output
RESPONSE
heart rate x stroke volume
RATIONALE
Cardiac output represents the volume of blood the heart pumps per minute. It is mathematically
determined by the product of the heart rate, which is the number of beats per minute, and the
stroke volume, the amount of blood ejected with each beat. This calculation is fundamental to
understanding cardiovascular function and hemodynamics.
Q5 QUESTION 5 OF 90
If a patients heart rate suddenly increases dramatically, what will occur?
RESPONSE
Decrease in cardiac output
RATIONALE
A sudden, dramatic increase in heart rate can lead to a reduced filling time for the ventricles,
thereby decreasing stroke volume. This diminished stroke volume, despite a higher rate, results in a
net decrease in cardiac output (CO = Heart Rate x Stroke Volume).
Page 3
, Q6 QUESTION 6 OF 90
If pt has a decreased preload, what should the nurse administer?
RESPONSE
IV fluids
RATIONALE
Decreased preload signifies reduced ventricular filling. Intravenous fluids increase circulating
volume, thereby enhancing venous return to the heart and improving ventricular filling. This directly
addresses the low preload state by augmenting the amount of blood available for the ventricles to
pump.
Q7 QUESTION 7 OF 90
The S1 sounds indicate the closure of
RESPONSE
the aortic and pulmonic valves closing
RATIONALE
The first heart sound (S1), often termed "lub," signifies the beginning of ventricular systole. This
sound is primarily caused by the abrupt closure of the mitral and tricuspid valves, preventing
backflow into the atria as ventricular pressure rises.
Q8 QUESTION 8 OF 90
The S2 sounds indicate the closure of
RESPONSE
the tricuspid and mitral valve closing
RATIONALE
The second heart sound (S2) signifies the closure of the semilunar valves. This occurs at the
beginning of diastole and is comprised of two components: the aortic valve closing (A2) and the
pulmonic valve closing (P2).
Page 4
P R O F E S S I O N A L P R A C T I C E M AT E R I A L S
NSG 3130 Exam 4 Questions
and Answers Detailed
Updated 2026/2027
(Rationales)
Verified Answers Exam Ready With Rationales 90 QUESTIONS
DOCUMENT OVERVIEW
This document provides 90 updated NSG 3130 exam questions with provided correct
answers and detailed rationales. It covers fundamental concepts in cardiovascular and
related physiological systems. This resource is ideal for students to study, review material,
and prepare for certification exams.
TOPICS
Cardiac Anatomy and Physiology Q1–Q10
Cardiovascular Diagnostics and Labs Q11–Q17
Therapeutics and Patient Teaching Q18–Q25
Risk Factors and Prevention Q26–Q38
Cardiovascular Pathophysiology Q39–Q65
Respiratory Physiology and Interventions Q66–Q90
Page 1
, E XA M Q U EST I O N S
Q1 QUESTION 1 OF 90
Components of the heart
RESPONSE
the pump
the electrical system
the vascular system
the blood volume
RATIONALE
The heart functions as a dual pump, circulating blood through pulmonary and systemic circuits.
This pumping action is coordinated by an intrinsic electrical conduction system. Effective cardiac
output also depends on the patency of the vascular system and adequate blood volume to maintain
perfusion.
Q2 QUESTION 2 OF 90
Preload
RESPONSE
amount of blood and pressure in the ventricle at the end of diastole. Increases due to increase
of volume.
RATIONALE
Preload represents the ventricular stretch at the end of diastole, directly influenced by the volume
of blood filling the ventricle. An increase in ventricular volume, such as from venous return, elevates
this end-diastolic pressure and stretch. This physiological state is crucial for determining stroke
volume via the Frank-Starling mechanism.
Q3 QUESTION 3 OF 90
Afterload
Page 2
, RESPONSE
the resistance that has to be exceeded for the ventricle to eject the blood during systole.
Increases due to HTN or vasoconstriction.
RATIONALE
Afterload represents the impedance the left ventricle must overcome to eject blood into the aorta
during systole. Elevated systemic vascular resistance, such as from hypertension or
vasoconstriction, directly increases this resistance, thereby increasing afterload. This increased
workload can strain the ventricle over time.
Q4 QUESTION 4 OF 90
cardiac output
RESPONSE
heart rate x stroke volume
RATIONALE
Cardiac output represents the volume of blood the heart pumps per minute. It is mathematically
determined by the product of the heart rate, which is the number of beats per minute, and the
stroke volume, the amount of blood ejected with each beat. This calculation is fundamental to
understanding cardiovascular function and hemodynamics.
Q5 QUESTION 5 OF 90
If a patients heart rate suddenly increases dramatically, what will occur?
RESPONSE
Decrease in cardiac output
RATIONALE
A sudden, dramatic increase in heart rate can lead to a reduced filling time for the ventricles,
thereby decreasing stroke volume. This diminished stroke volume, despite a higher rate, results in a
net decrease in cardiac output (CO = Heart Rate x Stroke Volume).
Page 3
, Q6 QUESTION 6 OF 90
If pt has a decreased preload, what should the nurse administer?
RESPONSE
IV fluids
RATIONALE
Decreased preload signifies reduced ventricular filling. Intravenous fluids increase circulating
volume, thereby enhancing venous return to the heart and improving ventricular filling. This directly
addresses the low preload state by augmenting the amount of blood available for the ventricles to
pump.
Q7 QUESTION 7 OF 90
The S1 sounds indicate the closure of
RESPONSE
the aortic and pulmonic valves closing
RATIONALE
The first heart sound (S1), often termed "lub," signifies the beginning of ventricular systole. This
sound is primarily caused by the abrupt closure of the mitral and tricuspid valves, preventing
backflow into the atria as ventricular pressure rises.
Q8 QUESTION 8 OF 90
The S2 sounds indicate the closure of
RESPONSE
the tricuspid and mitral valve closing
RATIONALE
The second heart sound (S2) signifies the closure of the semilunar valves. This occurs at the
beginning of diastole and is comprised of two components: the aortic valve closing (A2) and the
pulmonic valve closing (P2).
Page 4
