ATI Medical-Surgical Nursing Exam Study
Guide 2026 | Verified Practice Questions &
Answers with Detailed Rationales |
Comprehensive PN & RN Exam Prep
ATI MEDICAL-SURGICAL NURSING EXAM STUDY GUIDE 2026 Verified Practice
Questions & Answers with Detailed Rationales Comprehensive PN & RN Exam
Prep
• This comprehensive study guide contains 200 verified practice questions with
detailed rationales designed to reinforce critical medical-surgical nursing concepts
and prepare you for certification exams.
• Study by reviewing each question carefully, attempting to answer before reading
the rationale, and focusing on the explanations to understand the "why" behind
each correct answer.
Question 1
A patient with acute myocardial infarction presents to the emergency
department. Which finding would the nurse expect to assess within the first
few hours?
A) Decreased heart rate and elevated blood pressure
B) Elevated cardiac enzymes and troponin levels
C) Bradycardia with hypotension
D) Absence of chest pain with exertion
E) Reduced cardiac output with no pain
✓ B) Elevated cardiac enzymes and troponin levels
Rationale: Cardiac biomarkers including troponins and myoglobin are released into
the bloodstream within the first few hours after myocardial infarction when
myocardial necrosis occurs. Troponin becomes elevated within 2-4 hours and peaks
at 24-48 hours. This is the most specific and sensitive indicator of myocardial
damage. The other options do not accurately represent the expected findings
immediately following MI.
,Question 2
A patient receiving intravenous nitroglycerin for acute angina develops a
severe headache. What is the nurse's most appropriate action?
A) Discontinue the medication immediately and call the provider
B) Reduce the infusion rate and administer acetaminophen for the headache
C) Continue the infusion at the current rate and notify the provider
D) Increase the infusion rate to achieve faster relief
E) Switch to oral nitroglycerin to reduce side effects
✓ C) Continue the infusion at the current rate and notify the provider
Rationale: Headache is a common side effect of nitroglycerin therapy due to
cerebral vasodilation and should not warrant immediate discontinuation. The
medication should be continued while the provider is notified. The nurse may
administer acetaminophen if ordered. Discontinuing or increasing the rate would
be inappropriate nursing actions without provider consultation.
Question 3
Which assessment finding in a patient with left-sided heart failure would the
nurse prioritize?
A) Peripheral edema in the lower extremities
B) Orthopnea and crackles in the lungs
C) Distended jugular veins with hepatomegaly
D) Increased urine output and decreased BUN
E) Tachycardia with cool, dry skin
✓ B) Orthopnea and crackles in the lungs
,Rationale: Left-sided heart failure causes pulmonary congestion because the left
ventricle cannot pump blood forward effectively, resulting in backflow into the
pulmonary circulation. This leads to pulmonary edema manifested by orthopnea
(shortness of breath when lying flat), paroxysmal nocturnal dyspnea, and crackles
on lung auscultation. These are priority findings indicating acute respiratory
compromise. The other options reflect systemic congestion associated with right-
sided heart failure.
Question 4
A patient with chronic obstructive pulmonary disease (COPD) has an arterial
blood gas showing pH 7.32, PaCO2 55 mmHg, HCO3- 28 mEq/L, and PaO2 65
mmHg. What acid-base imbalance is this patient experiencing?
A) Respiratory acidosis with metabolic compensation
B) Metabolic acidosis with respiratory compensation
C) Respiratory alkalosis with metabolic compensation
D) Metabolic alkalosis with respiratory compensation
E) Mixed respiratory and metabolic acidosis
✓ A) Respiratory acidosis with metabolic compensation
Rationale: The patient has a pH below 7.35 (acidemia). The PaCO2 is elevated at 55
mmHg (respiratory component causing acidosis). The HCO3- is elevated at 28
mEq/L, indicating metabolic compensation attempting to correct the acidosis by
retaining bicarbonate. This is typical of COPD patients with chronic hypercapnia
where the kidneys compensate by retaining bicarbonate.
Question 5
A patient receiving mechanical ventilation for acute respiratory distress
syndrome (ARDS) suddenly develops decreased oxygen saturation. What is
the nurse's priority action?
, A) Notify the provider and obtain a stat chest X-ray
B) Immediately perform a quick assessment and auscultate lung sounds bilaterally
C) Increase the FiO2 setting on the ventilator
D) Perform suctioning of the endotracheal tube
E) Sedate the patient to reduce oxygen demands
✓ B) Immediately perform a quick assessment and auscultate lung sounds
bilaterally
Rationale: When a ventilated patient develops acute desaturation, the nurse must
quickly assess for common complications. Auscultating lung sounds bilaterally
helps identify tube malposition, obstruction, pneumothorax, or other mechanical
problems. This is the priority before implementing interventions. The mnemonic
DOPE helps (Displacement, Obstruction, Pneumothorax, Equipment malfunction)
and requires assessment before other actions.
Question 6
A patient with pneumonia presents with fever, productive cough, and
pleuritic chest pain. Ausculatory findings include bronchial breath sounds and
egophony. Which type of pneumonia consolidation is occurring?
A) Red hepatization with edema and fibrin deposition
B) Gray hepatization with fibrin and white blood cells
C) Resolution phase with macrophage infiltration
D) Suppurative phase with abscess formation
E) Organizing pneumonia with fibroblast activity
✓ B) Gray hepatization with fibrin and white blood cells
Rationale: The clinical findings of bronchial breath sounds and egophony indicate
consolidation. Gray hepatization is the second stage of pneumonia (days 4-8)
characterized by fibrin deposition, white blood cell infiltration, and fluid-filled
Guide 2026 | Verified Practice Questions &
Answers with Detailed Rationales |
Comprehensive PN & RN Exam Prep
ATI MEDICAL-SURGICAL NURSING EXAM STUDY GUIDE 2026 Verified Practice
Questions & Answers with Detailed Rationales Comprehensive PN & RN Exam
Prep
• This comprehensive study guide contains 200 verified practice questions with
detailed rationales designed to reinforce critical medical-surgical nursing concepts
and prepare you for certification exams.
• Study by reviewing each question carefully, attempting to answer before reading
the rationale, and focusing on the explanations to understand the "why" behind
each correct answer.
Question 1
A patient with acute myocardial infarction presents to the emergency
department. Which finding would the nurse expect to assess within the first
few hours?
A) Decreased heart rate and elevated blood pressure
B) Elevated cardiac enzymes and troponin levels
C) Bradycardia with hypotension
D) Absence of chest pain with exertion
E) Reduced cardiac output with no pain
✓ B) Elevated cardiac enzymes and troponin levels
Rationale: Cardiac biomarkers including troponins and myoglobin are released into
the bloodstream within the first few hours after myocardial infarction when
myocardial necrosis occurs. Troponin becomes elevated within 2-4 hours and peaks
at 24-48 hours. This is the most specific and sensitive indicator of myocardial
damage. The other options do not accurately represent the expected findings
immediately following MI.
,Question 2
A patient receiving intravenous nitroglycerin for acute angina develops a
severe headache. What is the nurse's most appropriate action?
A) Discontinue the medication immediately and call the provider
B) Reduce the infusion rate and administer acetaminophen for the headache
C) Continue the infusion at the current rate and notify the provider
D) Increase the infusion rate to achieve faster relief
E) Switch to oral nitroglycerin to reduce side effects
✓ C) Continue the infusion at the current rate and notify the provider
Rationale: Headache is a common side effect of nitroglycerin therapy due to
cerebral vasodilation and should not warrant immediate discontinuation. The
medication should be continued while the provider is notified. The nurse may
administer acetaminophen if ordered. Discontinuing or increasing the rate would
be inappropriate nursing actions without provider consultation.
Question 3
Which assessment finding in a patient with left-sided heart failure would the
nurse prioritize?
A) Peripheral edema in the lower extremities
B) Orthopnea and crackles in the lungs
C) Distended jugular veins with hepatomegaly
D) Increased urine output and decreased BUN
E) Tachycardia with cool, dry skin
✓ B) Orthopnea and crackles in the lungs
,Rationale: Left-sided heart failure causes pulmonary congestion because the left
ventricle cannot pump blood forward effectively, resulting in backflow into the
pulmonary circulation. This leads to pulmonary edema manifested by orthopnea
(shortness of breath when lying flat), paroxysmal nocturnal dyspnea, and crackles
on lung auscultation. These are priority findings indicating acute respiratory
compromise. The other options reflect systemic congestion associated with right-
sided heart failure.
Question 4
A patient with chronic obstructive pulmonary disease (COPD) has an arterial
blood gas showing pH 7.32, PaCO2 55 mmHg, HCO3- 28 mEq/L, and PaO2 65
mmHg. What acid-base imbalance is this patient experiencing?
A) Respiratory acidosis with metabolic compensation
B) Metabolic acidosis with respiratory compensation
C) Respiratory alkalosis with metabolic compensation
D) Metabolic alkalosis with respiratory compensation
E) Mixed respiratory and metabolic acidosis
✓ A) Respiratory acidosis with metabolic compensation
Rationale: The patient has a pH below 7.35 (acidemia). The PaCO2 is elevated at 55
mmHg (respiratory component causing acidosis). The HCO3- is elevated at 28
mEq/L, indicating metabolic compensation attempting to correct the acidosis by
retaining bicarbonate. This is typical of COPD patients with chronic hypercapnia
where the kidneys compensate by retaining bicarbonate.
Question 5
A patient receiving mechanical ventilation for acute respiratory distress
syndrome (ARDS) suddenly develops decreased oxygen saturation. What is
the nurse's priority action?
, A) Notify the provider and obtain a stat chest X-ray
B) Immediately perform a quick assessment and auscultate lung sounds bilaterally
C) Increase the FiO2 setting on the ventilator
D) Perform suctioning of the endotracheal tube
E) Sedate the patient to reduce oxygen demands
✓ B) Immediately perform a quick assessment and auscultate lung sounds
bilaterally
Rationale: When a ventilated patient develops acute desaturation, the nurse must
quickly assess for common complications. Auscultating lung sounds bilaterally
helps identify tube malposition, obstruction, pneumothorax, or other mechanical
problems. This is the priority before implementing interventions. The mnemonic
DOPE helps (Displacement, Obstruction, Pneumothorax, Equipment malfunction)
and requires assessment before other actions.
Question 6
A patient with pneumonia presents with fever, productive cough, and
pleuritic chest pain. Ausculatory findings include bronchial breath sounds and
egophony. Which type of pneumonia consolidation is occurring?
A) Red hepatization with edema and fibrin deposition
B) Gray hepatization with fibrin and white blood cells
C) Resolution phase with macrophage infiltration
D) Suppurative phase with abscess formation
E) Organizing pneumonia with fibroblast activity
✓ B) Gray hepatization with fibrin and white blood cells
Rationale: The clinical findings of bronchial breath sounds and egophony indicate
consolidation. Gray hepatization is the second stage of pneumonia (days 4-8)
characterized by fibrin deposition, white blood cell infiltration, and fluid-filled
