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WGU D446 OBJECTIVE ASSESSMENT FINAL ACTUAL
QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2025 Q&A | INSTANT
DOWNLOAD PDF
CORE DOMAINS
• Advanced Pathophysiology and Disease Management
• Pharmacotherapeutics and Safe Medication Administration
• Critical Care and Hemodynamic Monitoring
• Complex Health Alterations Across the Lifespan
• Evidence-Based Practice and Clinical Inquiry
• Clinical Judgment, Prioritization, and Delegation
• Ethical, Legal, and Regulatory Compliance
• Interprofessional Collaboration and Leadership
This objective assessment is designed to evaluate the comprehensive knowledge
and clinical reasoning skills essential for advanced nursing practice in complex
adult health. The examination measures your ability to synthesize
pathophysiological concepts, interpret critical diagnostic data, and apply
evidence-based interventions in high-acuity scenarios. Comprising 100 multiple-
choice questions, the test mirrors real-world clinical demands, emphasizing
prioritization of care, pharmacological management, and ethical decision-making.
Each question targets core competencies including hemodynamic monitoring,
emergency response, patient safety, and interprofessional collaboration. Success
on this assessment demonstrates readiness to manage multifaceted patient
conditions, lead care teams, and ensure optimal outcomes in dynamic healthcare
environments. Prepare to engage with content that bridges theory and practice,
requiring astute judgment and mastery of advanced nursing principles.
pg. 1
,2
SECTION ONE: QUESTIONS 1–100
Question 1
A nurse is caring for a client with septic shock who has a central venous pressure
(CVP) of 2 mm Hg, heart rate 118/min, blood pressure 84/50 mm Hg, and urine
output 10 mL/hr. The healthcare provider orders a fluid challenge with 500 mL of
0.9% sodium chloride over 30 minutes. Which finding indicates the fluid challenge
is achieving the desired therapeutic effect?
A. CVP increases to 8 mm Hg with an increase in blood pressure to 100/60 mm Hg
B. CVP remains at 2 mm Hg and heart rate increases to 130/min
C. Urine output decreases to 5 mL/hr and blood pressure drops to 80/46 mm Hg
D. CVP increases to 12 mm Hg with crackles in the lung bases
A. CVP increases to 8 mm Hg with an increase in blood pressure to 100/60
mm Hg
RATIONALE: In fluid-responsive septic shock, a fluid challenge should increase
preload, demonstrated by a rise in CVP (from 2 to 8 mm Hg, still within normal
range) and a corresponding improvement in cardiac output, reflected by
increased blood pressure. An unchanged or decreased blood pressure with a rise
in CVP to high levels (e.g., 12 mm Hg) with crackles suggests fluid overload and
pulmonary edema. A drop in urine output further indicates inadequate perfusion.
A positive response is improved hemodynamics without signs of volume overload.
Question 2
A client with acute respiratory distress syndrome (ARDS) is on mechanical
ventilation with a tidal volume of 6 mL/kg ideal body weight, PEEP 12 cm H2O,
and FiO2 0.60. Arterial blood gas shows pH 7.32, PaCO2 55 mm Hg, PaO2 58 mm
Hg, HCO3- 24 mEq/L. What intervention should the nurse anticipate?
A. Increase FiO2 to 1.0 and decrease PEEP to 5 cm H2O
B. Initiate prone positioning and consider inhaled nitric oxide
C. Administer sodium bicarbonate intravenously to correct acidosis
D. Switch to pressure support ventilation mode
B. Initiate prone positioning and consider inhaled nitric oxide
pg. 2
,3
RATIONALE: The ABG reveals refractory hypoxemia despite optimized
ventilator settings (lung-protective strategy). Prone positioning improves
ventilation-perfusion matching and is recommended for severe ARDS with
PaO2/FiO2 ratio <150. Inhaled nitric oxide may be considered as a rescue therapy
to improve oxygenation. Increasing FiO2 alone may not be sufficient and can
cause oxygen toxicity; decreasing PEEP would worsen alveolar collapse. Sodium
bicarbonate is not indicated for respiratory acidosis without metabolic
compensation. Pressure support is a spontaneous breathing mode inappropriate
for a deeply sedated ARDS patient.
Question 3
A nurse is analyzing a client’s ECG and notes a rhythm with no discernible P
waves, irregular R-R intervals, and a ventricular rate of 120-160/min. The QRS
complexes are narrow. The client is alert but reports palpitations. What is the
priority nursing action?
A. Administer adenosine 6 mg IV push per protocol
B. Prepare for immediate synchronized cardioversion
C. Assess the client’s blood pressure and oxygen saturation
D. Initiate a continuous amiodarone infusion
C. Assess the client’s blood pressure and oxygen saturation
RATIONALE: The rhythm described is atrial fibrillation with rapid ventricular
response. The client is stable (alert). The first step is to assess the client’s
hemodynamic status—blood pressure and oxygenation—since stable atrial
fibrillation may be managed with rate control, not emergency cardioversion.
Adenosine is used for supraventricular tachycardia with regular rhythm.
Synchronized cardioversion is reserved for unstable patients. Amiodarone may be
used for rhythm control but is not the immediate priority without further
assessment.
Question 4
A client with a history of cirrhosis develops confusion, flapping tremor of the
hands, and a serum ammonia level of 180 mcg/dL. The healthcare provider
prescribes lactulose 30 mL orally every 6 hours. What is the therapeutic goal of
this medication?
pg. 3
, 4
A. Decrease portal hypertension by osmotic diuresis
B. Acidify the colon to trap ammonia for excretion
C. Increase hepatic metabolism of ammonia
D. Replace beneficial intestinal bacteria to reduce ammonia production
B. Acidify the colon to trap ammonia for excretion
RATIONALE: Lactulose is a nonabsorbable disaccharide that lowers colonic pH,
which converts ammonia (NH3) to ammonium (NH4+), trapping it in the bowel
lumen for excretion. This reduces serum ammonia levels and improves hepatic
encephalopathy symptoms. It does not directly affect portal hypertension,
hepatic metabolism, or bacterial flora replacement (as would rifaximin).
Question 5
A nurse is caring for a client who has had a transsphenoidal hypophysectomy.
Which finding requires immediate intervention?
A. Clear nasal drainage that tests positive for glucose
B. Urine output of 200 mL/hr with a specific gravity of 1.005
C. Serum sodium of 148 mEq/L and thirst
D. Mild headache and nasal congestion
A. Clear nasal drainage that tests positive for glucose
RATIONALE: Clear nasal drainage positive for glucose indicates cerebrospinal
fluid (CSF) leak, which poses a risk for meningitis and requires immediate
notification and intervention, possibly including surgical repair. Diabetes insipidus
(B and C) is a known complication but is not as immediately life-threatening as a
CSF leak. Mild headache and congestion are expected postoperatively.
Question 6
A client is admitted with a hypertensive emergency with a blood pressure of
220/130 mm Hg. The nurse initiates a sodium nitroprusside infusion. Which
parameter is most critical to monitor continuously?
A. Serum potassium levels
B. Continuous blood pressure monitoring via arterial line
C. Urine output every hour
D. Level of consciousness
pg. 4
WGU D446 OBJECTIVE ASSESSMENT FINAL ACTUAL
QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2025 Q&A | INSTANT
DOWNLOAD PDF
CORE DOMAINS
• Advanced Pathophysiology and Disease Management
• Pharmacotherapeutics and Safe Medication Administration
• Critical Care and Hemodynamic Monitoring
• Complex Health Alterations Across the Lifespan
• Evidence-Based Practice and Clinical Inquiry
• Clinical Judgment, Prioritization, and Delegation
• Ethical, Legal, and Regulatory Compliance
• Interprofessional Collaboration and Leadership
This objective assessment is designed to evaluate the comprehensive knowledge
and clinical reasoning skills essential for advanced nursing practice in complex
adult health. The examination measures your ability to synthesize
pathophysiological concepts, interpret critical diagnostic data, and apply
evidence-based interventions in high-acuity scenarios. Comprising 100 multiple-
choice questions, the test mirrors real-world clinical demands, emphasizing
prioritization of care, pharmacological management, and ethical decision-making.
Each question targets core competencies including hemodynamic monitoring,
emergency response, patient safety, and interprofessional collaboration. Success
on this assessment demonstrates readiness to manage multifaceted patient
conditions, lead care teams, and ensure optimal outcomes in dynamic healthcare
environments. Prepare to engage with content that bridges theory and practice,
requiring astute judgment and mastery of advanced nursing principles.
pg. 1
,2
SECTION ONE: QUESTIONS 1–100
Question 1
A nurse is caring for a client with septic shock who has a central venous pressure
(CVP) of 2 mm Hg, heart rate 118/min, blood pressure 84/50 mm Hg, and urine
output 10 mL/hr. The healthcare provider orders a fluid challenge with 500 mL of
0.9% sodium chloride over 30 minutes. Which finding indicates the fluid challenge
is achieving the desired therapeutic effect?
A. CVP increases to 8 mm Hg with an increase in blood pressure to 100/60 mm Hg
B. CVP remains at 2 mm Hg and heart rate increases to 130/min
C. Urine output decreases to 5 mL/hr and blood pressure drops to 80/46 mm Hg
D. CVP increases to 12 mm Hg with crackles in the lung bases
A. CVP increases to 8 mm Hg with an increase in blood pressure to 100/60
mm Hg
RATIONALE: In fluid-responsive septic shock, a fluid challenge should increase
preload, demonstrated by a rise in CVP (from 2 to 8 mm Hg, still within normal
range) and a corresponding improvement in cardiac output, reflected by
increased blood pressure. An unchanged or decreased blood pressure with a rise
in CVP to high levels (e.g., 12 mm Hg) with crackles suggests fluid overload and
pulmonary edema. A drop in urine output further indicates inadequate perfusion.
A positive response is improved hemodynamics without signs of volume overload.
Question 2
A client with acute respiratory distress syndrome (ARDS) is on mechanical
ventilation with a tidal volume of 6 mL/kg ideal body weight, PEEP 12 cm H2O,
and FiO2 0.60. Arterial blood gas shows pH 7.32, PaCO2 55 mm Hg, PaO2 58 mm
Hg, HCO3- 24 mEq/L. What intervention should the nurse anticipate?
A. Increase FiO2 to 1.0 and decrease PEEP to 5 cm H2O
B. Initiate prone positioning and consider inhaled nitric oxide
C. Administer sodium bicarbonate intravenously to correct acidosis
D. Switch to pressure support ventilation mode
B. Initiate prone positioning and consider inhaled nitric oxide
pg. 2
,3
RATIONALE: The ABG reveals refractory hypoxemia despite optimized
ventilator settings (lung-protective strategy). Prone positioning improves
ventilation-perfusion matching and is recommended for severe ARDS with
PaO2/FiO2 ratio <150. Inhaled nitric oxide may be considered as a rescue therapy
to improve oxygenation. Increasing FiO2 alone may not be sufficient and can
cause oxygen toxicity; decreasing PEEP would worsen alveolar collapse. Sodium
bicarbonate is not indicated for respiratory acidosis without metabolic
compensation. Pressure support is a spontaneous breathing mode inappropriate
for a deeply sedated ARDS patient.
Question 3
A nurse is analyzing a client’s ECG and notes a rhythm with no discernible P
waves, irregular R-R intervals, and a ventricular rate of 120-160/min. The QRS
complexes are narrow. The client is alert but reports palpitations. What is the
priority nursing action?
A. Administer adenosine 6 mg IV push per protocol
B. Prepare for immediate synchronized cardioversion
C. Assess the client’s blood pressure and oxygen saturation
D. Initiate a continuous amiodarone infusion
C. Assess the client’s blood pressure and oxygen saturation
RATIONALE: The rhythm described is atrial fibrillation with rapid ventricular
response. The client is stable (alert). The first step is to assess the client’s
hemodynamic status—blood pressure and oxygenation—since stable atrial
fibrillation may be managed with rate control, not emergency cardioversion.
Adenosine is used for supraventricular tachycardia with regular rhythm.
Synchronized cardioversion is reserved for unstable patients. Amiodarone may be
used for rhythm control but is not the immediate priority without further
assessment.
Question 4
A client with a history of cirrhosis develops confusion, flapping tremor of the
hands, and a serum ammonia level of 180 mcg/dL. The healthcare provider
prescribes lactulose 30 mL orally every 6 hours. What is the therapeutic goal of
this medication?
pg. 3
, 4
A. Decrease portal hypertension by osmotic diuresis
B. Acidify the colon to trap ammonia for excretion
C. Increase hepatic metabolism of ammonia
D. Replace beneficial intestinal bacteria to reduce ammonia production
B. Acidify the colon to trap ammonia for excretion
RATIONALE: Lactulose is a nonabsorbable disaccharide that lowers colonic pH,
which converts ammonia (NH3) to ammonium (NH4+), trapping it in the bowel
lumen for excretion. This reduces serum ammonia levels and improves hepatic
encephalopathy symptoms. It does not directly affect portal hypertension,
hepatic metabolism, or bacterial flora replacement (as would rifaximin).
Question 5
A nurse is caring for a client who has had a transsphenoidal hypophysectomy.
Which finding requires immediate intervention?
A. Clear nasal drainage that tests positive for glucose
B. Urine output of 200 mL/hr with a specific gravity of 1.005
C. Serum sodium of 148 mEq/L and thirst
D. Mild headache and nasal congestion
A. Clear nasal drainage that tests positive for glucose
RATIONALE: Clear nasal drainage positive for glucose indicates cerebrospinal
fluid (CSF) leak, which poses a risk for meningitis and requires immediate
notification and intervention, possibly including surgical repair. Diabetes insipidus
(B and C) is a known complication but is not as immediately life-threatening as a
CSF leak. Mild headache and congestion are expected postoperatively.
Question 6
A client is admitted with a hypertensive emergency with a blood pressure of
220/130 mm Hg. The nurse initiates a sodium nitroprusside infusion. Which
parameter is most critical to monitor continuously?
A. Serum potassium levels
B. Continuous blood pressure monitoring via arterial line
C. Urine output every hour
D. Level of consciousness
pg. 4
