validating specialized knowledge caring for
acutely ill patients requiring advanced
observation and treatment.
Question 1
A patient in the progressive care unit (PCU) with a history of heart failure develops
acute dyspnea, crackles in all lung fields, and an SpO₂ of 88% on 2 L/min nasal
cannula. Which intervention should the nurse implement FIRST?
A) Administer furosemide 40 mg IV push
B) Place the patient in high-Fowler’s position
C) Apply a non-rebreather mask at 15 L/min
D) Notify the rapid response team
Answer: B – Rationale: High-Fowler’s position reduces preload and improves
ventilation immediately. Oxygen should be increased, but positioning is the first
non-invasive action. Furosemide will follow.
Question 2
A patient with a diagnosis of acute decompensated heart failure has a pulmonary
artery catheter in place. Hemodynamic values: cardiac index (CI) 1.8 L/min/m²
(normal 2.5-4.0), pulmonary artery occlusion pressure (PAOP) 22 mm Hg (normal
6-12). Which medication does the nurse anticipate?
A) Dobutamine infusion
B) Norepinephrine infusion
C) IV furosemide
D) Nitroprusside
Answer: A – Rationale: Low CI + high PAOP = cardiogenic shock with
pulmonary congestion. Dobutamine (inotrope) increases contractility and CI.
Diuretics treat congestion but not low output.
,Question 3
A patient on telemetry has a heart rate of 42 beats/min, BP 88/52 mm Hg, and
reports dizziness. The rhythm is sinus bradycardia with no ectopy. Which
medication should the nurse prepare to administer?
A) Epinephrine 1 mg IV push
B) Atropine 0.5 mg IV
C) Amiodarone 150 mg IV
D) Adenosine 6 mg rapid IV push
Answer: B – Rationale: Symptomatic bradycardia (hypotension, dizziness)
requires atropine as first-line treatment (0.5 mg IV, repeat up to 3 mg).
Epinephrine or dopamine is second-line.
Question 4
A patient with a new onset of atrial fibrillation with rapid ventricular response (HR
150) has a BP of 110/70 mm Hg and reports mild chest pressure. The nurse
prepares for which intervention?
A) Synchronized cardioversion
B) IV amiodarone
C) IV metoprolol
D) Immediate defibrillation
Answer: C – Rationale: The patient is stable (no severe hypotension, altered
mental status, or severe heart failure). Rate control with IV beta-blocker
(metoprolol) or diltiazem is first-line. Synchronized cardioversion is for unstable
patients.
Question 5
A patient with a history of COPD is on 2 L/min oxygen via nasal cannula. The
nurse notes increasing confusion and lethargy. An arterial blood gas (ABG) shows:
pH 7.31, PaCO₂ 72 mm Hg, HCO₃ 32 mEq/L, PaO₂ 58 mm Hg. The nurse should
FIRST:
A) Increase oxygen to 4 L/min
B) Prepare for non-invasive positive pressure ventilation (NIPPV)
,C) Administer sodium bicarbonate
D) Obtain a stat chest X-ray
Answer: B – Rationale: The ABG shows acute-on-chronic respiratory acidosis
(pH <7.35, high PaCO₂, elevated HCO₃). NIPPV (BiPAP) can improve ventilation
and avoid intubation.
Question 6
A patient with an acute myocardial infarction (MI) develops a new harsh
holosystolic murmur at the left sternal border with a palpable thrill. The patient
becomes hypotensive. The nurse suspects:
A) Acute mitral regurgitation
B) Ventricular septal rupture (VSR)
C) Papillary muscle rupture
D) Pericarditis
Answer: B – Rationale: VSR post-MI presents with a harsh holosystolic murmur
at the left sternal border (not apex) with a thrill, often with cardiogenic shock.
Apical murmur suggests MR.
Question 7
A patient with a subarachnoid hemorrhage has a mean arterial pressure (MAP) of
110 mm Hg and an ICP of 28 mm Hg. The cerebral perfusion pressure (CPP) is:
A) 82 mm Hg (normal)
B) 138 mm Hg
C) 60 mm Hg
D) 45 mm Hg
Answer: A – *Rationale: CPP = MAP – ICP = 110 – 28 = 82 mm Hg. Target CPP
is 60-80 mm Hg (some sources 50-70). 82 is slightly elevated but acceptable;
hypertension may be allowed to maintain CPP.*
Question 8
, A patient receiving a heparin infusion for a pulmonary embolism has an aPTT of
110 seconds (therapeutic range 60-80). The nurse should:
A) Decrease the heparin rate by 2 units/kg/hr
B) Stop the heparin infusion and notify the provider
C) Continue the infusion at the same rate
D) Administer protamine sulfate
Answer: B – Rationale: aPTT >100 seconds significantly increases bleeding risk.
The infusion should be stopped temporarily; provider will adjust dose or restart at
a lower rate.
Question 9
A patient with diabetic ketoacidosis (DKA) has a serum potassium of 2.9 mEq/L.
Which action should the nurse take BEFORE starting an insulin infusion?
A) Administer IV potassium replacement
B) Begin insulin infusion at 0.1 units/kg/hr
C) Give sodium bicarbonate for acidosis
D) Start normal saline with potassium and insulin simultaneously
Answer: A – *Rationale: Insulin drives K⁺ into cells and can worsen hypokalemia,
leading to arrhythmias. Correct K⁺ to >3.3 mEq/L before initiating insulin
infusion.*
Question 10
A patient post-cardiac arrest is on targeted temperature management (TTM) at
33°C. Which complication is most important to monitor for?
A) Shivering
B) Coagulopathy and bleeding
C) Hyperglycemia
D) Seizures
Answer: B – Rationale: Hypothermia impairs platelet function and coagulation
factors, increasing bleeding risk. Shivering is common but treatable; coagulopathy
can be life-threatening.