20 NCLEX-RN Style MCQs with Answers & Rationales
Heart Failure, MI, Arrhythmias & Cardiac Care
Question 1
A nurse performs a focused cardiovascular assessment on a patient reporting increasing
fatigue and shortness of breath when walking to the bathroom. Which finding is most
concerning for worsening left-sided heart failure?
A. Bilateral ankle edema at the end of the day
B. Jugular venous distention when the patient is sitting upright
C. Fine crackles auscultated at both lung bases
D. Capillary refill of 2 seconds in the fingers
Correct Answer: C. Fine crackles auscultated at both lung bases
Rationale:
Fine crackles indicate pulmonary fluid accumulation, which is characteristic of left-sided heart
failure. In a patient with worsening dyspnea and fatigue, pulmonary congestion is an important
sign of deterioration and requires prompt nursing attention.
Why the Other Options Are Incorrect:
• A: Peripheral edema is more closely associated with systemic venous congestion and
right-sided heart failure.
• B: Jugular venous distention indicates elevated systemic venous pressure and is
commonly associated with right-sided heart failure.
, • C: Correct. Crackles indicate pulmonary congestion from impaired left ventricular
function.
• D: A capillary refill of 2 seconds is generally not an immediately concerning
cardiovascular finding.
Clinical Judgment Tested: Recognizing an assessment finding indicating acute cardiovascular
deterioration
Topic: Cardiovascular Assessment / Heart Failure
Difficulty: Moderate
Bloom's Level: Analysis
Question 2
A patient presents to the emergency department reporting pressure-like chest discomfort
that began while resting. The pain radiates to the jaw and has persisted for 20 minutes. Which
assessment finding most strongly supports acute coronary syndrome?
A. Pain that occurs predictably after climbing stairs and resolves with rest
B. Chest discomfort occurring at rest and lasting longer than several minutes
C. Sharp chest pain that worsens with inspiration
D. Burning epigastric discomfort immediately after a large meal
Correct Answer: B. Chest discomfort occurring at rest and lasting longer than several minutes
Rationale:
New or worsening chest discomfort occurring at rest and lasting longer than several minutes is
concerning for acute coronary syndrome. Radiation to the jaw further increases concern for
myocardial ischemia and warrants immediate evaluation and intervention.
Why the Other Options Are Incorrect:
• A: Predictable exertional pain relieved by rest is more consistent with stable angina.
, • B: Correct. New chest pain at rest is a classic warning sign of acute coronary syndrome.
• C: Pleuritic pain is less characteristic of myocardial ischemia.
• D: Postprandial burning may have a gastrointestinal cause, although cardiac causes
should not be dismissed solely because symptoms resemble indigestion.
Clinical Judgment Tested: Differentiating acute myocardial ischemia from less urgent causes of
chest discomfort
Topic: Coronary Artery Disease / Acute Coronary Syndrome
Difficulty: Moderate
Bloom's Level: Analysis
Question 3
A patient with hypertension is prescribed an ACE inhibitor. Which patient statement indicates
a need for further teaching?
A. “I will change positions slowly if I feel dizzy.”
B. “I should report swelling of my lips or tongue.”
C. “I can stop taking the medication once my blood pressure improves.”
D. “My healthcare provider may monitor my kidney function and potassium level.”
Correct Answer: C. “I can stop taking the medication once my blood pressure improves.”
Rationale:
Antihypertensive therapy is often long-term. Patients should not discontinue an ACE inhibitor
simply because blood pressure improves because the medication may be responsible for
maintaining that improvement. Sudden discontinuation without guidance can contribute to loss
of blood pressure control.
Why the Other Options Are Incorrect:
• A: Orthostatic symptoms can occur, and changing positions slowly helps reduce fall risk.
, • B: Correct teaching includes reporting facial, lip, or tongue swelling because angioedema
can threaten the airway.
• C: Correct answer. The medication should not be discontinued independently.
• D: ACE inhibitors can affect renal function and potassium balance, making monitoring
appropriate.
Clinical Judgment Tested: Evaluating patient understanding of antihypertensive medication
safety
Topic: Hypertension / ACE Inhibitors
Difficulty: Easy
Bloom's Level: Application
Question 4
A patient with heart failure has gained 2.2 kg (4.8 lb) over the past 3 days. Which nursing
action is the priority?
A. Encourage the patient to increase oral fluid intake
B. Assess for worsening respiratory symptoms and pulmonary congestion
C. Reassure the patient that rapid weight changes are expected
D. Encourage increased physical activity to remove excess fluid
Correct Answer: B. Assess for worsening respiratory symptoms and pulmonary congestion
Rationale:
A rapid increase in weight in a patient with heart failure suggests fluid retention. The nurse
should assess for manifestations of worsening volume overload, particularly dyspnea, crackles,
decreased oxygenation, and other evidence of pulmonary congestion.
Why the Other Options Are Incorrect:
• A: Increasing fluid intake could worsen volume overload if fluid restriction is prescribed.