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WGU D027 Advanced Pathopharmacology ACTUAL
EXAM QUESTIONS AND ANSWERS 2026/2027 |
Objective Assessment OA | Synthesis & Application |
Pass Guaranteed - A+ Graded
COMPETENCY DOMAIN 1: ADVANCED HEALTH ASSESSMENT & DIAGNOSTIC
REASONING (35%)
Case Stem 1: A 65-year-old male with a history of COPD (GOLD 3) and coronary artery disease
presents to the clinic with 5 days of increasing dyspnea and productive cough. He is a former
smoker. Vital signs: T 38.1°C, P 110, R 28, BP 142/90, SpO2 88% on room air.
Q1. Based on the initial presentation, which diagnostic test is the highest priority to obtain first?
A. High-resolution CT scan of the chest
B. Arterial blood gas (ABG) analysis [CORRECT]
C. Serum brain natriuretic peptide (BNP) level
D. Pulmonary function tests (PFTs)
Correct Answer: B
Rationale: The patient presents with signs of acute respiratory distress (tachypnea, hypoxia) in
the context of known COPD. The immediate priority is to assess the severity of gas exchange
impairment (acid-base status, PaO2, PaCO2) to guide urgent therapeutic decisions (e.g., need
for supplemental oxygen, non-invasive ventilation). An ABG provides this critical, immediate
data. While a CT scan (A) may be needed later, it is not the first test. BNP (C) would help rule
out heart failure, but hypoxia in a COPD exacerbation is the primary threat. PFTs (D) are for
chronic, not acute, assessment. This question assesses competency in prioritizing diagnostic
evaluation based on acuity.
Case Stem 1 (continued): The patient's ABG results on 2L O2 via NC are: pH 7.32, PaCO2 52
mmHg, PaO2 62 mmHg, HCO3- 26 mEq/L. He is diagnosed with a COPD exacerbation.
Q2. [Select ALL that apply] Which medications should the nurse anticipate administering as part
of initial management?
A. Inhaled short-acting beta-agonist (albuterol) and anticholinergic (ipratropium) [CORRECT]
B. Intravenous corticosteroids (e.g., methylprednisolone) [CORRECT]
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C. Oral theophylline
D. Empirical broad-spectrum antibiotics (e.g., levofloxacin) [CORRECT]
E. Long-acting muscarinic antagonist (tiotropium) as rescue therapy
Correct Answers: A, B, D
Rationale: Per GOLD guidelines, initial pharmacologic management of a moderate-severe
COPD exacerbation includes: Bronchodilators (A: SABA + SAMA) to relieve airflow
obstruction; Systemic corticosteroids (B) to reduce inflammation and recovery time; and
Antibiotics (D) if there are signs of bacterial infection (increased purulent sputum, fever, as seen
here). Oral theophylline (C) is not recommended for acute exacerbations due to its narrow
therapeutic index and side effect profile. Long-acting agents (E) are maintenance medications,
not rescue therapy for acute exacerbations. This assesses competency in applying evidence-
based pharmacologic protocols for complex chronic disease exacerbations.
Case Stem 2: A 58-year-old female with type 2 diabetes (HbA1c 8.2%), hypertension, and
chronic kidney disease (eGFR 42) presents with 2 hours of crushing substernal chest pain
radiating to her jaw, diaphoresis, and nausea. Vital signs: BP 88/56, P 108, R 24, SpO2 94% on
RA. ECG shows ST-segment elevation in leads V1-V4.
Q3. [Ordered Response] Place the following interventions in the correct priority order for this
patient:
1. Administer aspirin 325 mg (if not allergic) [Step 1]
2. Establish IV access and draw troponin/CK-MB [Step 2]
3. Prepare for emergent percutaneous coronary intervention (PCI) [Step 4]
4. Administer sublingual nitroglycerin 0.4 mg [Step 3]
5. Apply supplemental oxygen 2L NC [Step 5 - if SpO2 <90%]
Correct Order: 1 → 2 → 4 → 3 → 5 (Note: Oxygen only if hypoxemic per current ACC/AHA
guidelines)
Rationale: STEMI protocol prioritization: Aspirin (1) immediately (antiplatelet, mortality
benefit); IV access and labs (2) for baseline and PCI preparation; Nitroglycerin (4) for pain
relief and afterload reduction (avoid if RV infarct or SBP <90); PCI preparation (3) as
definitive reperfusion therapy (goal: door-to-balloon <90 min); Oxygen (5) only if SpO2 <90%
(routine oxygen not recommended in normoxic patients). This assesses competency in
synthesizing ACLS protocols with patient-specific pathophysiology.
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Q4. The patient is found to have a right ventricular infarct in addition to anterior wall STEMI.
Which modification to standard management is critical?
A. Increase nitroglycerin dosing for improved afterload reduction
B. Avoid nitrates and administer cautious fluid boluses [CORRECT]
C. Initiate beta-blocker therapy immediately
D. Administer morphine 4mg IV push for pain control
Correct Answer: B
Rationale: Right ventricular infarction (often accompanying inferior STEMIs, but can occur
with anterior) causes preload-dependent cardiac output. Nitrates (A) cause venodilation,
reducing preload and potentially causing profound hypotension—absolutely contraindicated.
Fluid boluses (500mL-1L normal saline) are often needed to maintain adequate preload and
cardiac output. Beta-blockers (C) are contraindicated in acute decompensated heart failure or
hypotension. Morphine (D) is associated with worse outcomes in ACS and should be avoided
unless refractory pain. This assesses competency in modifying standard protocols based on
complex anatomical variations.
Case Stem 3: A 72-year-old male post-laparoscopic cholecystectomy (POD #3) develops sudden
onset dyspnea, tachycardia (HR 118), and anxiety. SpO2 drops from 96% to 89% on 2L NC.
Physical exam reveals clear lung fields bilaterally. D-dimer is 1,850 ng/mL (normal <500).
Q5. [Select ALL that apply] Which findings on CT pulmonary angiography (CTPA) would
confirm massive pulmonary embolism and indicate need for systemic thrombolysis?
A. Saddle embolus at pulmonary artery bifurcation [CORRECT]
B. Right ventricular strain on CT or echocardiogram [CORRECT]
C. Systolic blood pressure <90 mmHg despite fluid resuscitation [CORRECT]
D. Bilateral segmental pulmonary emboli without hemodynamic compromise
E. Elevated troponin indicating right heart strain [CORRECT]
Correct Answers: A, B, C, E
Rationale: Massive PE is defined by hemodynamic compromise (C: persistent hypotension) or
right ventricular dysfunction (B, E: RV strain biomarkers/imaging) in the context of confirmed
PE. Saddle embolus (A) often causes massive PE due to bilateral obstruction. Systemic
thrombolysis is indicated for massive PE with hemodynamic compromise. Bilateral segmental
emboli without hemodynamic compromise (D) represents submassive PE—thrombolysis may
be considered but not emergently indicated. This assesses competency in interpreting
advanced imaging and applying severity stratification criteria.
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Q6. The patient becomes hypotensive (BP 76/48) before CTPA can be obtained. What is the
most appropriate immediate intervention?
A. Administer heparin bolus and await imaging confirmation
B. Initiate systemic thrombolysis with alteplase based on clinical probability [CORRECT]
C. Perform emergent surgical embolectomy as first-line
D. Insert inferior vena cava filter immediately
Correct Answer: B
Rationale: In high-probability PE with hemodynamic compromise, empiric systemic
thrombolysis is indicated when definitive imaging cannot be obtained immediately due to
clinical instability. The mortality benefit of thrombolysis in massive PE outweighs bleeding
risks. Heparin alone (A) is insufficient for massive PE. Surgical embolectomy (C) is reserved for
thrombolysis contraindications or failure. IVC filter (D) prevents future emboli but does not treat
existing massive PE. This assesses competency in making time-critical decisions with
incomplete diagnostic information.
Case Stem 4: A 45-year-old female with systemic lupus erythematosus presents with fever,
fatigue, and joint swelling in her knees and wrists. Laboratory studies reveal: WBC 3,200/μL,
Hgb 8.9 g/dL, platelets 89,000/μL, creatinine 2.1 mg/dL (baseline 0.9), urinalysis shows 3+
protein and RBC casts. Complement levels (C3, C4) are decreased. Anti-dsDNA antibody titer is
elevated.
Q7. Which pathophysiological process is primarily responsible for the renal findings?
A. Immune complex deposition causing glomerulonephritis [CORRECT]
B. Direct antibody-mediated tubular necrosis
C. Thrombotic microangiopathy from antiphospholipid antibodies
D. Interstitial nephritis from NSAID use
Correct Answer: A
Rationale: The presentation indicates lupus nephritis (proteinuria, hematuria with RBC casts,
rising creatinine). Type III hypersensitivity with immune complex deposition (DNA-anti-
DNA complexes) in the glomerular basement membrane triggers complement activation (low
C3/C4) and inflammatory damage. While antiphospholipid syndrome (C) can cause renal
thrombosis, the active sediment and complement consumption indicate immune complex-
mediated glomerulonephritis. NSAID nephritis (D) typically causes minimal change disease or
interstitial nephritis without active sediment or complement abnormalities. This assesses
competency in connecting immunological mechanisms to organ-specific pathology.
WGU D027 Advanced Pathopharmacology ACTUAL
EXAM QUESTIONS AND ANSWERS 2026/2027 |
Objective Assessment OA | Synthesis & Application |
Pass Guaranteed - A+ Graded
COMPETENCY DOMAIN 1: ADVANCED HEALTH ASSESSMENT & DIAGNOSTIC
REASONING (35%)
Case Stem 1: A 65-year-old male with a history of COPD (GOLD 3) and coronary artery disease
presents to the clinic with 5 days of increasing dyspnea and productive cough. He is a former
smoker. Vital signs: T 38.1°C, P 110, R 28, BP 142/90, SpO2 88% on room air.
Q1. Based on the initial presentation, which diagnostic test is the highest priority to obtain first?
A. High-resolution CT scan of the chest
B. Arterial blood gas (ABG) analysis [CORRECT]
C. Serum brain natriuretic peptide (BNP) level
D. Pulmonary function tests (PFTs)
Correct Answer: B
Rationale: The patient presents with signs of acute respiratory distress (tachypnea, hypoxia) in
the context of known COPD. The immediate priority is to assess the severity of gas exchange
impairment (acid-base status, PaO2, PaCO2) to guide urgent therapeutic decisions (e.g., need
for supplemental oxygen, non-invasive ventilation). An ABG provides this critical, immediate
data. While a CT scan (A) may be needed later, it is not the first test. BNP (C) would help rule
out heart failure, but hypoxia in a COPD exacerbation is the primary threat. PFTs (D) are for
chronic, not acute, assessment. This question assesses competency in prioritizing diagnostic
evaluation based on acuity.
Case Stem 1 (continued): The patient's ABG results on 2L O2 via NC are: pH 7.32, PaCO2 52
mmHg, PaO2 62 mmHg, HCO3- 26 mEq/L. He is diagnosed with a COPD exacerbation.
Q2. [Select ALL that apply] Which medications should the nurse anticipate administering as part
of initial management?
A. Inhaled short-acting beta-agonist (albuterol) and anticholinergic (ipratropium) [CORRECT]
B. Intravenous corticosteroids (e.g., methylprednisolone) [CORRECT]
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C. Oral theophylline
D. Empirical broad-spectrum antibiotics (e.g., levofloxacin) [CORRECT]
E. Long-acting muscarinic antagonist (tiotropium) as rescue therapy
Correct Answers: A, B, D
Rationale: Per GOLD guidelines, initial pharmacologic management of a moderate-severe
COPD exacerbation includes: Bronchodilators (A: SABA + SAMA) to relieve airflow
obstruction; Systemic corticosteroids (B) to reduce inflammation and recovery time; and
Antibiotics (D) if there are signs of bacterial infection (increased purulent sputum, fever, as seen
here). Oral theophylline (C) is not recommended for acute exacerbations due to its narrow
therapeutic index and side effect profile. Long-acting agents (E) are maintenance medications,
not rescue therapy for acute exacerbations. This assesses competency in applying evidence-
based pharmacologic protocols for complex chronic disease exacerbations.
Case Stem 2: A 58-year-old female with type 2 diabetes (HbA1c 8.2%), hypertension, and
chronic kidney disease (eGFR 42) presents with 2 hours of crushing substernal chest pain
radiating to her jaw, diaphoresis, and nausea. Vital signs: BP 88/56, P 108, R 24, SpO2 94% on
RA. ECG shows ST-segment elevation in leads V1-V4.
Q3. [Ordered Response] Place the following interventions in the correct priority order for this
patient:
1. Administer aspirin 325 mg (if not allergic) [Step 1]
2. Establish IV access and draw troponin/CK-MB [Step 2]
3. Prepare for emergent percutaneous coronary intervention (PCI) [Step 4]
4. Administer sublingual nitroglycerin 0.4 mg [Step 3]
5. Apply supplemental oxygen 2L NC [Step 5 - if SpO2 <90%]
Correct Order: 1 → 2 → 4 → 3 → 5 (Note: Oxygen only if hypoxemic per current ACC/AHA
guidelines)
Rationale: STEMI protocol prioritization: Aspirin (1) immediately (antiplatelet, mortality
benefit); IV access and labs (2) for baseline and PCI preparation; Nitroglycerin (4) for pain
relief and afterload reduction (avoid if RV infarct or SBP <90); PCI preparation (3) as
definitive reperfusion therapy (goal: door-to-balloon <90 min); Oxygen (5) only if SpO2 <90%
(routine oxygen not recommended in normoxic patients). This assesses competency in
synthesizing ACLS protocols with patient-specific pathophysiology.
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Q4. The patient is found to have a right ventricular infarct in addition to anterior wall STEMI.
Which modification to standard management is critical?
A. Increase nitroglycerin dosing for improved afterload reduction
B. Avoid nitrates and administer cautious fluid boluses [CORRECT]
C. Initiate beta-blocker therapy immediately
D. Administer morphine 4mg IV push for pain control
Correct Answer: B
Rationale: Right ventricular infarction (often accompanying inferior STEMIs, but can occur
with anterior) causes preload-dependent cardiac output. Nitrates (A) cause venodilation,
reducing preload and potentially causing profound hypotension—absolutely contraindicated.
Fluid boluses (500mL-1L normal saline) are often needed to maintain adequate preload and
cardiac output. Beta-blockers (C) are contraindicated in acute decompensated heart failure or
hypotension. Morphine (D) is associated with worse outcomes in ACS and should be avoided
unless refractory pain. This assesses competency in modifying standard protocols based on
complex anatomical variations.
Case Stem 3: A 72-year-old male post-laparoscopic cholecystectomy (POD #3) develops sudden
onset dyspnea, tachycardia (HR 118), and anxiety. SpO2 drops from 96% to 89% on 2L NC.
Physical exam reveals clear lung fields bilaterally. D-dimer is 1,850 ng/mL (normal <500).
Q5. [Select ALL that apply] Which findings on CT pulmonary angiography (CTPA) would
confirm massive pulmonary embolism and indicate need for systemic thrombolysis?
A. Saddle embolus at pulmonary artery bifurcation [CORRECT]
B. Right ventricular strain on CT or echocardiogram [CORRECT]
C. Systolic blood pressure <90 mmHg despite fluid resuscitation [CORRECT]
D. Bilateral segmental pulmonary emboli without hemodynamic compromise
E. Elevated troponin indicating right heart strain [CORRECT]
Correct Answers: A, B, C, E
Rationale: Massive PE is defined by hemodynamic compromise (C: persistent hypotension) or
right ventricular dysfunction (B, E: RV strain biomarkers/imaging) in the context of confirmed
PE. Saddle embolus (A) often causes massive PE due to bilateral obstruction. Systemic
thrombolysis is indicated for massive PE with hemodynamic compromise. Bilateral segmental
emboli without hemodynamic compromise (D) represents submassive PE—thrombolysis may
be considered but not emergently indicated. This assesses competency in interpreting
advanced imaging and applying severity stratification criteria.
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Q6. The patient becomes hypotensive (BP 76/48) before CTPA can be obtained. What is the
most appropriate immediate intervention?
A. Administer heparin bolus and await imaging confirmation
B. Initiate systemic thrombolysis with alteplase based on clinical probability [CORRECT]
C. Perform emergent surgical embolectomy as first-line
D. Insert inferior vena cava filter immediately
Correct Answer: B
Rationale: In high-probability PE with hemodynamic compromise, empiric systemic
thrombolysis is indicated when definitive imaging cannot be obtained immediately due to
clinical instability. The mortality benefit of thrombolysis in massive PE outweighs bleeding
risks. Heparin alone (A) is insufficient for massive PE. Surgical embolectomy (C) is reserved for
thrombolysis contraindications or failure. IVC filter (D) prevents future emboli but does not treat
existing massive PE. This assesses competency in making time-critical decisions with
incomplete diagnostic information.
Case Stem 4: A 45-year-old female with systemic lupus erythematosus presents with fever,
fatigue, and joint swelling in her knees and wrists. Laboratory studies reveal: WBC 3,200/μL,
Hgb 8.9 g/dL, platelets 89,000/μL, creatinine 2.1 mg/dL (baseline 0.9), urinalysis shows 3+
protein and RBC casts. Complement levels (C3, C4) are decreased. Anti-dsDNA antibody titer is
elevated.
Q7. Which pathophysiological process is primarily responsible for the renal findings?
A. Immune complex deposition causing glomerulonephritis [CORRECT]
B. Direct antibody-mediated tubular necrosis
C. Thrombotic microangiopathy from antiphospholipid antibodies
D. Interstitial nephritis from NSAID use
Correct Answer: A
Rationale: The presentation indicates lupus nephritis (proteinuria, hematuria with RBC casts,
rising creatinine). Type III hypersensitivity with immune complex deposition (DNA-anti-
DNA complexes) in the glomerular basement membrane triggers complement activation (low
C3/C4) and inflammatory damage. While antiphospholipid syndrome (C) can cause renal
thrombosis, the active sediment and complement consumption indicate immune complex-
mediated glomerulonephritis. NSAID nephritis (D) typically causes minimal change disease or
interstitial nephritis without active sediment or complement abnormalities. This assesses
competency in connecting immunological mechanisms to organ-specific pathology.
