ATI RN Capstone Proctored Comprehensive
Assessment B 2026/2027 | Nursing
Comprehensive Exam Study Guide, Practice
Questions & Answers | ATI Capstone Exam
Prep & Final Review
ATI RN CAPSTONE PROCTORED COMPREHENSIVE ASSESSMENT B 2026/2027
NURSING COMPREHENSIVE EXAM STUDY GUIDE & PRACTICE QUESTIONS
• Comprehensive 200-question practice assessment designed to simulate the actual
ATI Capstone exam with detailed rationales for each answer, covering all major
nursing domains including medical-surgical, pediatric, maternal-newborn,
psychiatric, pharmacology, and leadership concepts.
• Use this material to identify knowledge gaps, practice clinical reasoning under
exam conditions, review high-yield concepts across the lifespan, and build
confidence with evidence-based rationales that explain both correct and incorrect
options.
1. A client with acute myocardial infarction is experiencing chest pain
unrelieved by rest. Which intervention should the nurse prioritize?
A) Administer oxygen and establish IV access
B) Obtain a 12-lead ECG and administer aspirin
C) Place the client in a supine position
D) Initiate cardiac catheterization immediately
E) Provide emotional support and reassurance only
✓ B) Obtain a 12-lead ECG and administer aspirin
Rationale: The 12-lead ECG is the definitive diagnostic tool for identifying MI and
should be obtained within 10 minutes of arrival. Aspirin (300-325 mg) should be
administered immediately as it irreversibly inhibits platelet aggregation and
reduces clot formation. While oxygen and IV access are important, the ECG and
,aspirin are time-sensitive interventions that directly impact myocardial salvage and
client outcomes. A supine position may worsen cardiac workload, and immediate
catheterization requires ECG confirmation first.
2. A postoperative client develops sudden dyspnea, unilateral chest pain, and
tachycardia on day 3 after abdominal surgery. What is the most likely
diagnosis?
A) Pneumonia
B) Acute pulmonary embolism
C) Cardiac arrhythmia
D) Tension pneumothorax
E) Acute heart failure
✓ B) Acute pulmonary embolism
Rationale: The clinical presentation of sudden dyspnea, unilateral pleuritic chest
pain, and tachycardia in a postoperative client is classic for pulmonary embolism.
Postoperative clients have increased risk due to immobility, surgical trauma, and
tissue damage. Pneumonia develops more gradually and is associated with fever
and productive cough. Tension pneumothorax presents with severe respiratory
distress and hypotension. Cardiac arrhythmia may occur but wouldn't typically
cause pleuritic chest pain. PE requires immediate anticoagulation and potential
thrombolytic therapy.
3. A client with severe hypertension is prescribed labetalol. Which mechanism
of action should the nurse explain to the client?
A) Blocks calcium channels to decrease myocardial contractility
B) Acts as both alpha and beta-adrenergic antagonist
C) Inhibits ACE to reduce angiotensin II production
D) Dilates coronary arteries to increase blood flow
,E) Blocks potassium channels to decrease heart rate
✓ B) Acts as both alpha and beta-adrenergic antagonist
Rationale: Labetalol is a combined alpha-1 and beta-adrenergic blocker that
reduces peripheral resistance (alpha effect) and decreases heart rate and cardiac
contractility (beta effect). This dual action makes it particularly effective for
hypertensive emergencies. Calcium channel blockers and ACE inhibitors are
different drug classes. The coronary dilation effect is secondary to the reduction in
blood pressure, not the primary mechanism.
4. A 6-month-old infant is admitted with bronchiolitis. Which nursing
intervention is most appropriate for maintaining oxygenation?
A) Place the infant in a prone position
B) Use continuous pulse oximetry and humidified oxygen as ordered
C) Restrict fluids to prevent pulmonary edema
D) Position in supine position for better chest expansion
E) Suction the airway every 30 minutes
✓ B) Use continuous pulse oximetry and humidified oxygen as ordered
Rationale: Humidified oxygen supports oxygenation while moistening mucous
membranes, making secretions easier to clear. Continuous pulse oximetry allows
for monitoring of oxygen saturation trends. Prone positioning is contraindicated in
infants (SIDS risk). Fluids should be maintained as infants lose fluids through
increased insensible losses and respiratory effort. Frequent suctioning can cause
mucosal damage and hypoxia; it should only be done as needed based on
assessment findings.
5. A postpartum client is expressing breast milk for her preterm infant. Which
teaching should the nurse provide regarding milk storage?
A) Store at room temperature for up to 8 hours
, B) Refrigerate at 35-38°F (1.6-3.3°C) for up to 5 days
C) Freeze immediately to prevent bacterial growth
D) Use within 2 hours of expression regardless of storage method
E) Store in plastic bags only to prevent contamination
✓ B) Refrigerate at 35-38°F (1.6-3.3°C) for up to 5 days
Rationale: CDC guidelines recommend refrigerating expressed breast milk at 35-
38°F for up to 5 days (or 3 months in a freezer at 0°F or below). Room temperature
storage is only for 4 hours maximum. While freezing extends storage time,
immediate freezing is not necessary if the milk will be used within 5 days. Glass
containers are preferred as plastic may leach chemicals; however, specially
designed breast milk storage bags are acceptable. Milk should be thawed in the
refrigerator or under warm running water, never in the microwave.
6. A client with schizophrenia is experiencing command hallucinations to
harm others. Which nursing intervention is most appropriate?
A) Isolate the client immediately to protect others
B) Ask the client to describe the voices and assess for imminent danger
C) Administer antipsychotic medications and establish a therapeutic relationship
D) Restrain the client for safety
E) Discharge the client from psychiatric care
✓ B) Ask the client to describe the voices and assess for imminent danger
Rationale: Assessment is the foundation of safe intervention. By asking the client
to describe what they're hearing, the nurse gains information about content,
frequency, and whether the client plans to act on the commands. This allows for
proper risk stratification. While medication is important, it cannot be administered
before assessment. Isolation alone is not therapeutic and may increase agitation.
Restraint should only be used as a last resort after other de-escalation attempts.
The client requires acute psychiatric hospitalization, not discharge.
Assessment B 2026/2027 | Nursing
Comprehensive Exam Study Guide, Practice
Questions & Answers | ATI Capstone Exam
Prep & Final Review
ATI RN CAPSTONE PROCTORED COMPREHENSIVE ASSESSMENT B 2026/2027
NURSING COMPREHENSIVE EXAM STUDY GUIDE & PRACTICE QUESTIONS
• Comprehensive 200-question practice assessment designed to simulate the actual
ATI Capstone exam with detailed rationales for each answer, covering all major
nursing domains including medical-surgical, pediatric, maternal-newborn,
psychiatric, pharmacology, and leadership concepts.
• Use this material to identify knowledge gaps, practice clinical reasoning under
exam conditions, review high-yield concepts across the lifespan, and build
confidence with evidence-based rationales that explain both correct and incorrect
options.
1. A client with acute myocardial infarction is experiencing chest pain
unrelieved by rest. Which intervention should the nurse prioritize?
A) Administer oxygen and establish IV access
B) Obtain a 12-lead ECG and administer aspirin
C) Place the client in a supine position
D) Initiate cardiac catheterization immediately
E) Provide emotional support and reassurance only
✓ B) Obtain a 12-lead ECG and administer aspirin
Rationale: The 12-lead ECG is the definitive diagnostic tool for identifying MI and
should be obtained within 10 minutes of arrival. Aspirin (300-325 mg) should be
administered immediately as it irreversibly inhibits platelet aggregation and
reduces clot formation. While oxygen and IV access are important, the ECG and
,aspirin are time-sensitive interventions that directly impact myocardial salvage and
client outcomes. A supine position may worsen cardiac workload, and immediate
catheterization requires ECG confirmation first.
2. A postoperative client develops sudden dyspnea, unilateral chest pain, and
tachycardia on day 3 after abdominal surgery. What is the most likely
diagnosis?
A) Pneumonia
B) Acute pulmonary embolism
C) Cardiac arrhythmia
D) Tension pneumothorax
E) Acute heart failure
✓ B) Acute pulmonary embolism
Rationale: The clinical presentation of sudden dyspnea, unilateral pleuritic chest
pain, and tachycardia in a postoperative client is classic for pulmonary embolism.
Postoperative clients have increased risk due to immobility, surgical trauma, and
tissue damage. Pneumonia develops more gradually and is associated with fever
and productive cough. Tension pneumothorax presents with severe respiratory
distress and hypotension. Cardiac arrhythmia may occur but wouldn't typically
cause pleuritic chest pain. PE requires immediate anticoagulation and potential
thrombolytic therapy.
3. A client with severe hypertension is prescribed labetalol. Which mechanism
of action should the nurse explain to the client?
A) Blocks calcium channels to decrease myocardial contractility
B) Acts as both alpha and beta-adrenergic antagonist
C) Inhibits ACE to reduce angiotensin II production
D) Dilates coronary arteries to increase blood flow
,E) Blocks potassium channels to decrease heart rate
✓ B) Acts as both alpha and beta-adrenergic antagonist
Rationale: Labetalol is a combined alpha-1 and beta-adrenergic blocker that
reduces peripheral resistance (alpha effect) and decreases heart rate and cardiac
contractility (beta effect). This dual action makes it particularly effective for
hypertensive emergencies. Calcium channel blockers and ACE inhibitors are
different drug classes. The coronary dilation effect is secondary to the reduction in
blood pressure, not the primary mechanism.
4. A 6-month-old infant is admitted with bronchiolitis. Which nursing
intervention is most appropriate for maintaining oxygenation?
A) Place the infant in a prone position
B) Use continuous pulse oximetry and humidified oxygen as ordered
C) Restrict fluids to prevent pulmonary edema
D) Position in supine position for better chest expansion
E) Suction the airway every 30 minutes
✓ B) Use continuous pulse oximetry and humidified oxygen as ordered
Rationale: Humidified oxygen supports oxygenation while moistening mucous
membranes, making secretions easier to clear. Continuous pulse oximetry allows
for monitoring of oxygen saturation trends. Prone positioning is contraindicated in
infants (SIDS risk). Fluids should be maintained as infants lose fluids through
increased insensible losses and respiratory effort. Frequent suctioning can cause
mucosal damage and hypoxia; it should only be done as needed based on
assessment findings.
5. A postpartum client is expressing breast milk for her preterm infant. Which
teaching should the nurse provide regarding milk storage?
A) Store at room temperature for up to 8 hours
, B) Refrigerate at 35-38°F (1.6-3.3°C) for up to 5 days
C) Freeze immediately to prevent bacterial growth
D) Use within 2 hours of expression regardless of storage method
E) Store in plastic bags only to prevent contamination
✓ B) Refrigerate at 35-38°F (1.6-3.3°C) for up to 5 days
Rationale: CDC guidelines recommend refrigerating expressed breast milk at 35-
38°F for up to 5 days (or 3 months in a freezer at 0°F or below). Room temperature
storage is only for 4 hours maximum. While freezing extends storage time,
immediate freezing is not necessary if the milk will be used within 5 days. Glass
containers are preferred as plastic may leach chemicals; however, specially
designed breast milk storage bags are acceptable. Milk should be thawed in the
refrigerator or under warm running water, never in the microwave.
6. A client with schizophrenia is experiencing command hallucinations to
harm others. Which nursing intervention is most appropriate?
A) Isolate the client immediately to protect others
B) Ask the client to describe the voices and assess for imminent danger
C) Administer antipsychotic medications and establish a therapeutic relationship
D) Restrain the client for safety
E) Discharge the client from psychiatric care
✓ B) Ask the client to describe the voices and assess for imminent danger
Rationale: Assessment is the foundation of safe intervention. By asking the client
to describe what they're hearing, the nurse gains information about content,
frequency, and whether the client plans to act on the commands. This allows for
proper risk stratification. While medication is important, it cannot be administered
before assessment. Isolation alone is not therapeutic and may increase agitation.
Restraint should only be used as a last resort after other de-escalation attempts.
The client requires acute psychiatric hospitalization, not discharge.
