, 150 Heart Failure
NCLEX-Style Questions with Rationales
Comprehensive Review for Nursing Students
Covers: Pathophysiology | Assessment | Interventions | Pharmacology |
Patient Education | Complications | Advanced HF | Special Populations
Practice questions designed to mirror the NCLEX-RN examination format
Pathophysiology & Etiology
1. A nurse is reviewing the pathophysiology of heart failure with a
group of nursing students. Which statement by a student indicates
correct understanding of the Frank-Starling mechanism in heart
failure?
A. The Frank-Starling mechanism allows the heart to compensate by
increasing contractility with increased preload.
B. In heart failure, the Frank-Starling mechanism is enhanced, leading to
improved cardiac output.
C. The Frank-Starling mechanism causes vasoconstriction to maintain blood
pressure in heart failure.
D. In heart failure, the Frank-Starling curve shifts downward, and increased
preload leads to decreased stroke volume.
Correct Answer: D
Rationale: In heart failure, the Frank-Starling curve shifts downward and to
the right. While a healthy heart increases stroke volume with increased
preload (within limits), a failing heart cannot effectively use increased
preload to improve contractility.
Instead, excessive preload leads to pulmonary or systemic congestion
without improving cardiac output.
,2. A client with chronic heart failure asks the nurse why fluid
accumulates in the lungs. Which response by the nurse is most
accurate?
A. The kidneys retain too much sodium, which pulls water into the lungs.
B. Decreased cardiac output causes blood to back up into the pulmonary
circulation, increasing hydrostatic pressure.
C. The heart muscle becomes too thick and cannot relax properly.
D. Inflammation from the failing heart causes fluid to leak into the alveoli.
Correct Answer: B
Rationale: In left-sided heart failure, decreased left ventricular output
causes blood to back up into the pulmonary circulation. This increases
pulmonary capillary hydrostatic pressure, forcing fluid into the interstitial
spaces and alveoli (pulmonary edema).
3. Which neurohormonal compensatory mechanism in heart
failure is most responsible for the progression of ventricular
remodeling?
A. Increased parasympathetic nervous system activity
B. Activation of the renin-angiotensin-aldosterone system (RAAS)
C. Release of atrial natriuretic peptide (ANP)
D. Increased baroreceptor sensitivity
Correct Answer: B
Rationale: RAAS activation is the primary driver of adverse ventricular
remodeling in heart failure. Angiotensin II causes vasoconstriction,
aldosterone promotes sodium/water retention and myocardial fibrosis, and
both contribute to progressive myocardial dysfunction. This is why ACE
inhibitors and ARBs are cornerstone therapies.
4. A nurse is caring for a client with right-sided heart failure. The
nurse understands that the primary cause of peripheral edema in
this client is:
A. Decreased plasma oncotic pressure from liver dysfunction.
B. Increased systemic venous pressure causing fluid to shift into tissues.
C. Increased capillary permeability from inflammatory cytokines.
, D.Lymphatic obstruction from venous congestion.
Correct Answer: B
Rationale: Right-sided heart failure causes blood to back up into the
systemic venous circulation. Increased systemic venous pressure (central
venous pressure) raises hydrostatic pressure in peripheral capillaries,
causing fluid to shift into interstitial tissues, resulting in peripheral edema,
ascites, and jugular venous distension.
5. Which statement best describes the difference between systolic
and diastolic heart failure?
A. Systolic failure is caused by coronary artery disease; diastolic failure is
caused by hypertension.
B. Systolic failure involves impaired ventricular contraction; diastolic failure
involves impaired ventricular relaxation and filling.
C. Systolic failure has a preserved ejection fraction; diastolic failure has a
reduced ejection fraction.
D. Systolic failure affects the right ventricle; diastolic failure affects the left
ventricle.
Correct Answer: B
Rationale: Systolic heart failure (HFrEF) is characterized by impaired
ventricular contraction and reduced ejection fraction. Diastolic heart failure
(HFpEF) is characterized by stiff, noncompliant ventricles that cannot relax
and fill properly during diastole, despite preserved contractile function.
6. A client with heart failure develops cardiogenic shock. The
nurse understands that the primary hemodynamic problem is:
A. Severe vasodilation causing hypotension.
B. Inadequate cardiac output despite adequate intravascular volume.
C. Hypovolemia from excessive diuresis.
D. Massive pulmonary embolism obstructing blood flow.
Correct Answer: B
Rationale: Cardiogenic shock is defined as inadequate tissue perfusion due
to severe cardiac pump failure despite adequate intravascular volume. It is
characterized by hypotension (SBP <90 mmHg), low cardiac output, and
evidence of tissue hypoperfusion.
NCLEX-Style Questions with Rationales
Comprehensive Review for Nursing Students
Covers: Pathophysiology | Assessment | Interventions | Pharmacology |
Patient Education | Complications | Advanced HF | Special Populations
Practice questions designed to mirror the NCLEX-RN examination format
Pathophysiology & Etiology
1. A nurse is reviewing the pathophysiology of heart failure with a
group of nursing students. Which statement by a student indicates
correct understanding of the Frank-Starling mechanism in heart
failure?
A. The Frank-Starling mechanism allows the heart to compensate by
increasing contractility with increased preload.
B. In heart failure, the Frank-Starling mechanism is enhanced, leading to
improved cardiac output.
C. The Frank-Starling mechanism causes vasoconstriction to maintain blood
pressure in heart failure.
D. In heart failure, the Frank-Starling curve shifts downward, and increased
preload leads to decreased stroke volume.
Correct Answer: D
Rationale: In heart failure, the Frank-Starling curve shifts downward and to
the right. While a healthy heart increases stroke volume with increased
preload (within limits), a failing heart cannot effectively use increased
preload to improve contractility.
Instead, excessive preload leads to pulmonary or systemic congestion
without improving cardiac output.
,2. A client with chronic heart failure asks the nurse why fluid
accumulates in the lungs. Which response by the nurse is most
accurate?
A. The kidneys retain too much sodium, which pulls water into the lungs.
B. Decreased cardiac output causes blood to back up into the pulmonary
circulation, increasing hydrostatic pressure.
C. The heart muscle becomes too thick and cannot relax properly.
D. Inflammation from the failing heart causes fluid to leak into the alveoli.
Correct Answer: B
Rationale: In left-sided heart failure, decreased left ventricular output
causes blood to back up into the pulmonary circulation. This increases
pulmonary capillary hydrostatic pressure, forcing fluid into the interstitial
spaces and alveoli (pulmonary edema).
3. Which neurohormonal compensatory mechanism in heart
failure is most responsible for the progression of ventricular
remodeling?
A. Increased parasympathetic nervous system activity
B. Activation of the renin-angiotensin-aldosterone system (RAAS)
C. Release of atrial natriuretic peptide (ANP)
D. Increased baroreceptor sensitivity
Correct Answer: B
Rationale: RAAS activation is the primary driver of adverse ventricular
remodeling in heart failure. Angiotensin II causes vasoconstriction,
aldosterone promotes sodium/water retention and myocardial fibrosis, and
both contribute to progressive myocardial dysfunction. This is why ACE
inhibitors and ARBs are cornerstone therapies.
4. A nurse is caring for a client with right-sided heart failure. The
nurse understands that the primary cause of peripheral edema in
this client is:
A. Decreased plasma oncotic pressure from liver dysfunction.
B. Increased systemic venous pressure causing fluid to shift into tissues.
C. Increased capillary permeability from inflammatory cytokines.
, D.Lymphatic obstruction from venous congestion.
Correct Answer: B
Rationale: Right-sided heart failure causes blood to back up into the
systemic venous circulation. Increased systemic venous pressure (central
venous pressure) raises hydrostatic pressure in peripheral capillaries,
causing fluid to shift into interstitial tissues, resulting in peripheral edema,
ascites, and jugular venous distension.
5. Which statement best describes the difference between systolic
and diastolic heart failure?
A. Systolic failure is caused by coronary artery disease; diastolic failure is
caused by hypertension.
B. Systolic failure involves impaired ventricular contraction; diastolic failure
involves impaired ventricular relaxation and filling.
C. Systolic failure has a preserved ejection fraction; diastolic failure has a
reduced ejection fraction.
D. Systolic failure affects the right ventricle; diastolic failure affects the left
ventricle.
Correct Answer: B
Rationale: Systolic heart failure (HFrEF) is characterized by impaired
ventricular contraction and reduced ejection fraction. Diastolic heart failure
(HFpEF) is characterized by stiff, noncompliant ventricles that cannot relax
and fill properly during diastole, despite preserved contractile function.
6. A client with heart failure develops cardiogenic shock. The
nurse understands that the primary hemodynamic problem is:
A. Severe vasodilation causing hypotension.
B. Inadequate cardiac output despite adequate intravascular volume.
C. Hypovolemia from excessive diuresis.
D. Massive pulmonary embolism obstructing blood flow.
Correct Answer: B
Rationale: Cardiogenic shock is defined as inadequate tissue perfusion due
to severe cardiac pump failure despite adequate intravascular volume. It is
characterized by hypotension (SBP <90 mmHg), low cardiac output, and
evidence of tissue hypoperfusion.
