Exam-Style Questions with Detailed
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[SECTION 1: Cardiovascular Disorders - Questions 1-30]
Q1: A nurse is assessing a client who is receiving furosemide for heart failure. Which laboratory
value should the nurse monitor to detect an adverse effect of this medication?
A. Increased serum sodium
B. Decreased serum potassium
C. Elevated blood glucose
D. Decreased serum calcium
Correct Answer: B
Rationale: Furosemide is a loop diuretic that inhibits the reabsorption of sodium and chloride in
the ascending loop of Henle, leading to increased excretion of potassium as well. Hypokalemia
is a common and serious adverse effect that can precipitate life-threatening cardiac
dysrhythmias, particularly in clients with heart failure who may also be taking digoxin. Monitoring
serum potassium levels and instructing the client to consume potassium-rich foods are essential
nursing interventions to prevent complications.
Q2: A client with a history of myocardial infarction is prescribed carvedilol. What is the primary
therapeutic effect of this medication?
A. Vasodilation and decreased heart rate
B. Increased cardiac contractility
C. Diuresis and fluid loss
D. Platelet inhibition
Correct Answer: A
Rationale: Carvedilol is a beta-adrenergic blocker and alpha-adrenergic blocker that reduces
myocardial oxygen demand by slowing the heart rate and decreasing contractility. Additionally,
its alpha-blocking properties cause vasodilation, reducing afterload and blood pressure. This
combined effect makes it highly effective in reducing mortality and preventing remodeling in
clients with heart failure or post-MI.
Q3: A nurse is caring for a client with infective endocarditis. Which assessment finding requires
immediate intervention?
A. Fever of 100.4°F (38°C)
,B. New onset of a loud, holosystolic murmur
C. Fatigue and weakness
D. Petechiae on the conjunctiva
Correct Answer: B
Rationale: The development of a new murmur or a change in an existing murmur suggests
valvular damage or rupture, a serious complication of infective endocarditis that can lead to
acute heart failure. This finding requires immediate medical evaluation and potentially surgical
intervention to repair or replace the affected valve. While fever and petechiae are classic signs
of the disease, the murmur change indicates structural cardiac compromise.
Q4: A client presents to the emergency department with chest pain. Which troponin level is most
indicative of acute myocardial infarction?
A. 0.04 ng/mL
B. 0.08 ng/mL
C. 0.12 ng/mL
D. 0.03 ng/mL
Correct Answer: C
Rationale: The reference range for troponin is typically less than 0.04 ng/mL. A level of 0.12
ng/mL is significantly elevated and, in the context of chest pain, strongly indicates myocardial
muscle injury consistent with an acute myocardial infarction. Troponin is the gold standard
biomarker for cardiac injury due to its high specificity and sensitivity for myocardial necrosis.
Q5: A nurse is teaching a client about hypertension. Which statement by the client indicates an
understanding of the DASH diet?
A. "I will drink whole milk for calcium."
B. "I will eat more fruits and vegetables."
C. "I will season my food with salt substitutes."
D. "I will include red meat with every meal."
Correct Answer: B
Rationale: The Dietary Approaches to Stop Hypertension (DASH) diet emphasizes the intake of
fruits, vegetables, whole grains, and low-fat dairy products while reducing red meat and
saturated fats. These foods are rich in potassium, magnesium, and calcium, which help lower
blood pressure. Reducing sodium intake is also a key component, but salt substitutes can be
dangerous for clients with renal issues or on certain medications, making increased produce
intake the safest recommendation.
Q6: A client with peripheral arterial disease describes leg pain that occurs during walking but is
relieved by rest. How should the nurse document this finding?
A. Thromboangiitis obliterans
B. Lymphedema
C. Intermittent claudication
,D. Deep vein thrombosis
Correct Answer: C
Rationale: Intermittent claudication is the classic symptom of peripheral arterial disease,
characterized by ischemic muscle pain caused by inadequate blood flow during exercise. The
pain typically resolves with rest as the oxygen demand decreases. This documentation helps
differentiate arterial insufficiency from other conditions like venous stasis or musculoskeletal
pain.
Q7: A client with atrial fibrillation is prescribed warfarin. Which instruction is essential for the
nurse to include?
A. Avoid taking acetaminophen for pain relief.
B. Use a soft-bristled toothbrush and electric razor.
C. Eat large amounts of green leafy vegetables daily.
D. Stop the medication if the pulse is regular.
Correct Answer: B
Rationale: Warfarin therapy increases the risk of bleeding; therefore, the client must take
precautions to prevent injury and bleeding. Using a soft-bristled toothbrush and an electric razor
minimizes trauma to the gums and skin, reducing the risk of hemorrhage. While diet consistency
regarding vitamin K is important, immediate safety measures to prevent bleeding are prioritized
in client education.
Q8: A client is recovering from a cardiac catheterization via the femoral artery. Which action
should the nurse take?
A. Ambulate the client within 2 hours.
B. Check the distal pulses and capillary refill.
C. Apply a heating pad to the puncture site.
D. Encourage the client to cough vigorously.
Correct Answer: B
Rationale: Assessing distal pulses, skin temperature, color, and capillary refill is critical to
monitor for signs of arterial occlusion or compromised circulation to the affected limb. Early
detection of a hematoma or blockage allows for prompt intervention to prevent ischemia and
tissue damage. The client typically remains on bedrest for several hours, depending on the
closure device used, and heating pads or coughing could dislodge the clot.
Q9: A client with heart failure is experiencing acute dyspnea. Which position should the nurse
place the client in?
A. Supine with legs elevated
B. High Fowler's with legs dependent
C. Side-lying with knees flexed
D. Trendelenburg position
, Correct Answer: B
Rationale: The high Fowler's position with the legs dependent (dangling) helps decrease venous
return to the heart, reducing preload and the workload on the failing heart. This position also
allows the diaphragm to descend fully, maximizing lung expansion and improving oxygenation. It
is the standard intervention for acute pulmonary edema associated with heart failure.
Q10: A nurse is preparing to administer digoxin to a client with heart failure. What assessment
finding requires the nurse to withhold the dose and notify the provider?
A. Heart rate of 68/min
B. Potassium level of 3.0 mEq/L
C. Blood pressure of 110/70 mmHg
D. Apical pulse of 72/min
Correct Answer: B
Rationale: Hypokalemia (potassium level of 3.0 mEq/L) increases the risk of digoxin toxicity
because potassium competes with digoxin for binding sites. When potassium levels are low,
digoxin binds more readily to cardiac cells, increasing the likelihood of dysrhythmias. The nurse
must withhold the dose and contact the provider to treat the electrolyte imbalance before
administering digoxin.
Q11: A client is diagnosed with pericarditis. Which characteristic sound should the nurse expect
to hear on auscultation?
A. Systolic murmur
B. Diastolic murmur
C. Pericardial friction rub
D. Pleural friction rub
Correct Answer: C
Rationale: A pericardial friction rub is a grating, scratching sound heard best at the left sternal
border with the client leaning forward and exhaling. It is caused by the inflamed pericardial
layers rubbing against each other. This sound is the hallmark sign of pericarditis and
distinguishes it from other cardiac conditions like murmurs or pleural rubs.
Q12: A client with an abdominal aortic aneurysm (AAA) reports sudden, severe back pain. The
nurse observes a pulsating abdominal mass. What is the priority action?
A. Administer oral analgesics
B. Prepare the client for emergency surgery
C. Measure the abdominal circumference
D. Obtain a detailed history of the pain
Correct Answer: B
Rationale: Sudden, severe back or abdominal pain in a client with a known AAA, accompanied
by a pulsating mass, is highly suggestive of rupture or impending rupture, a surgical emergency.
Immediate preparation for surgical intervention is required to prevent exsanguination and death.