Adult Health II (D446) New OA 2 Exam | Adult
Health II (D446) New OA 2 Exam Q&A | WGU
────────────────────────────────────
This study guide is intended to provide comprehensive preparation for nursing examinations by
focusing on complex disease management, therapeutic nursing interventions, and safe
patient care strategies in adult healthcare environments. The content reflects practical nursing
concepts frequently tested in advanced adult health nursing assessments.
This version contains realistic exam-style questions designed to strengthen understanding of
nursing priorities, patient assessment findings, and interdisciplinary healthcare coordination.
Detailed expert explanations support deeper understanding and practical clinical application.
════════════════════════════════════
Why Use This Exam:
• Strengthens clinical decision-making skills
• Reinforces therapeutic nursing interventions
• Supports safe patient management practices
• Improves understanding of adult health disorders
• Enhances nursing prioritization strategies
• Provides realistic nursing exam simulations
• Encourages analytical and evidence-based thinking
• Helps students prepare for complex clinical scenarios
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1. A patient with heart failure is receiving digoxin. Which laboratory value should the nurse
monitor most closely to prevent digoxin toxicity?
A. Serum sodium
B. Serum magnesium
C. Serum calcium
,D. Serum potassium
Correct Answer: D
Expert Explanation: Hypokalemia increases the risk of digoxin toxicity because potassium
and digoxin compete for binding sites on the sodium-potassium ATPase pump. When
potassium levels are low, more digoxin can bind, leading to toxic effects. The nurse must
monitor electrolyte levels frequently in patients taking loop diuretics and digoxin
simultaneously.
2. An arterial blood gas (ABG) report shows pH 7.30, PaCO2 55 mmHg, and HCO3 26 mEq/L.
How should the nurse interpret these results?
A. Respiratory alkalosis
B. Metabolic acidosis
C. Respiratory acidosis
D. Metabolic alkalosis
Correct Answer: C
Expert Explanation: The pH is below 7.35, which indicates acidosis. The PaCO2 is elevated
above 45 mmHg, which is consistent with the acidic pH and indicates a respiratory cause.
The bicarbonate level is within the normal range, suggesting no compensation has occurred
yet.
,3. A patient is admitted with a diagnosis of Acute Respiratory Distress Syndrome (ARDS).
Which ventilator setting is specifically used to keep the alveoli open at the end of expiration?
A. Tidal volume
B. Positive End-Expiratory Pressure (PEEP)
C. Fraction of inspired oxygen (FiO2)
D. Inspiratory reserve volume
Correct Answer: B
Expert Explanation: PEEP provides pressure at the end of expiration to prevent alveolar
collapse. This helps improve oxygenation and functional residual capacity in patients with
ARDS. High levels of PEEP must be monitored closely for complications like barotrauma or
decreased cardiac output.
4. Which clinical manifestation is considered a ‘late sign’ of increased intracranial pressure
(ICP)?
A. Headache
B. Bradycardia with a widening pulse pressure
C. Restlessness
D. Pupillary changes
Correct Answer: B
, Expert Explanation: Bradycardia, widening pulse pressure, and irregular respirations
comprise Cushing’s Triad, which is a late sign of increased ICP. Early signs include subtle
changes in mental status, restlessness, or a headache. Recognizing Cushing’s Triad is
critical as it suggests imminent brain herniation.
5. A nurse is caring for a patient who suffered a major burn. Using the Parkland formula, the
fluid requirement for the first 24 hours is calculated. How much of this total volume should
be administered in the first 8 hours?
A. One-fourth
B. One-third
C. The entire amount
D. One-half
Correct Answer: D
Expert Explanation: The Parkland formula dictates that half of the calculated 24-hour
fluid volume is given in the first 8 hours post-injury. The remaining half is administered
over the subsequent 16 hours. Timely fluid resuscitation is vital to prevent hypovolemic
shock in burn victims.
6. A patient with a history of atrial fibrillation is prescribed warfarin. Which laboratory result
is used to monitor the effectiveness of this medication?
A. aPTT
B. Platelet count
Health II (D446) New OA 2 Exam Q&A | WGU
────────────────────────────────────
This study guide is intended to provide comprehensive preparation for nursing examinations by
focusing on complex disease management, therapeutic nursing interventions, and safe
patient care strategies in adult healthcare environments. The content reflects practical nursing
concepts frequently tested in advanced adult health nursing assessments.
This version contains realistic exam-style questions designed to strengthen understanding of
nursing priorities, patient assessment findings, and interdisciplinary healthcare coordination.
Detailed expert explanations support deeper understanding and practical clinical application.
════════════════════════════════════
Why Use This Exam:
• Strengthens clinical decision-making skills
• Reinforces therapeutic nursing interventions
• Supports safe patient management practices
• Improves understanding of adult health disorders
• Enhances nursing prioritization strategies
• Provides realistic nursing exam simulations
• Encourages analytical and evidence-based thinking
• Helps students prepare for complex clinical scenarios
════════════════════════════════════
1. A patient with heart failure is receiving digoxin. Which laboratory value should the nurse
monitor most closely to prevent digoxin toxicity?
A. Serum sodium
B. Serum magnesium
C. Serum calcium
,D. Serum potassium
Correct Answer: D
Expert Explanation: Hypokalemia increases the risk of digoxin toxicity because potassium
and digoxin compete for binding sites on the sodium-potassium ATPase pump. When
potassium levels are low, more digoxin can bind, leading to toxic effects. The nurse must
monitor electrolyte levels frequently in patients taking loop diuretics and digoxin
simultaneously.
2. An arterial blood gas (ABG) report shows pH 7.30, PaCO2 55 mmHg, and HCO3 26 mEq/L.
How should the nurse interpret these results?
A. Respiratory alkalosis
B. Metabolic acidosis
C. Respiratory acidosis
D. Metabolic alkalosis
Correct Answer: C
Expert Explanation: The pH is below 7.35, which indicates acidosis. The PaCO2 is elevated
above 45 mmHg, which is consistent with the acidic pH and indicates a respiratory cause.
The bicarbonate level is within the normal range, suggesting no compensation has occurred
yet.
,3. A patient is admitted with a diagnosis of Acute Respiratory Distress Syndrome (ARDS).
Which ventilator setting is specifically used to keep the alveoli open at the end of expiration?
A. Tidal volume
B. Positive End-Expiratory Pressure (PEEP)
C. Fraction of inspired oxygen (FiO2)
D. Inspiratory reserve volume
Correct Answer: B
Expert Explanation: PEEP provides pressure at the end of expiration to prevent alveolar
collapse. This helps improve oxygenation and functional residual capacity in patients with
ARDS. High levels of PEEP must be monitored closely for complications like barotrauma or
decreased cardiac output.
4. Which clinical manifestation is considered a ‘late sign’ of increased intracranial pressure
(ICP)?
A. Headache
B. Bradycardia with a widening pulse pressure
C. Restlessness
D. Pupillary changes
Correct Answer: B
, Expert Explanation: Bradycardia, widening pulse pressure, and irregular respirations
comprise Cushing’s Triad, which is a late sign of increased ICP. Early signs include subtle
changes in mental status, restlessness, or a headache. Recognizing Cushing’s Triad is
critical as it suggests imminent brain herniation.
5. A nurse is caring for a patient who suffered a major burn. Using the Parkland formula, the
fluid requirement for the first 24 hours is calculated. How much of this total volume should
be administered in the first 8 hours?
A. One-fourth
B. One-third
C. The entire amount
D. One-half
Correct Answer: D
Expert Explanation: The Parkland formula dictates that half of the calculated 24-hour
fluid volume is given in the first 8 hours post-injury. The remaining half is administered
over the subsequent 16 hours. Timely fluid resuscitation is vital to prevent hypovolemic
shock in burn victims.
6. A patient with a history of atrial fibrillation is prescribed warfarin. Which laboratory result
is used to monitor the effectiveness of this medication?
A. aPTT
B. Platelet count
