CERTIFIED EMERGENCY NURSE – QUESTIONS AND ANSWERS | VERIFIED AND WELL
DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED PASS | LATEST EXAM UPDATE
Core Domains
• Cardiovascular Emergencies
• Respiratory Emergencies
• Neurological Emergencies
• Trauma and Shock Management
• Medical and Toxicological Emergencies
• Behavioral and Psychiatric Emergencies
• Maxillofacial, Ocular, and Orthopedic Emergencies
• Professional, Legal, and Ethical Practice
Introduction
The purpose of the Certified Emergency Nurse exam is to validate specialized knowledge,
critical thinking, and clinical competency required for safe, effective emergency nursing
practice. This assessment evaluates essential skills and clinical judgment across diverse
emergency care domains. Utilizing a rigorous multiple-choice and scenario-based structure,
the exam emphasizes real-world application, rapid prioritization, and evidence-based
decision-making under high-stress conditions. Candidates must demonstrate proficiency in
recognizing life-threatening alterations, executing timely interventions, maintaining
regulatory and ethical standards, and optimizing patient outcomes in dynamic emergency
environments.
1. A 58-year-old male presents to the emergency department complaining of crushing
substernal chest pain radiating to the left arm and jaw, accompanied by diaphoresis
and nausea. A 12-lead electrocardiogram reveals ST-segment elevation of 3 mm in
leads V2 through V4. Which of the following immediate nursing interventions is the
absolute priority?
A. Administering sublingual nitroglycerin as prescribed.
B. Activating the cardiac catheterization team for primary percutaneous coronary
intervention.
C. Obtaining a serial set of cardiac biomarker blood samples.
D. Inserting a peripheral intravenous line for hydration.
B. Activating the cardiac catheterization team for primary percutaneous coronary
intervention.
, Explanation: The patient presents with classic signs and symptoms of an acute ST-
elevation myocardial infarction (STEMI) of the anterior wall. The primary goal in STEMI
management is rapid reperfusion of the occluded coronary artery to minimize myocardial
damage. Activating the catheterization laboratory immediately aligns with evidence-based
guidelines targeting a door-to-balloon time of under 90 minutes.
2. A trauma patient arrives via emergency medical services following a high-speed
motor vehicle collision. The patient is intubated, mechanically ventilated, and has
absent breath sounds on the left side of the chest along with tracheal deviation to
the right and profound hypotension. What is the most appropriate immediate
action?
A. Performing a needle decompression of the left second intercostal space.
B. Obtaining an emergent portable chest radiograph.
C. Administering a rapid fluid bolus of warm normal saline.
D. Inserting a large-bore chest tube in the fifth intercostal space.
A. Performing a needle decompression of the left second intercostal space.
Explanation: The clinical presentation of absent breath sounds, tracheal deviation, and
hypotension in a trauma patient strongly indicates a life-threatening tension pneumothorax.
This is an obstructive shock state that causes mediastinal shift and impaired venous return.
Needle decompression is an immediate, lifesaving intervention that converts a tension
pneumothorax to a simple pneumothorax prior to definitive chest tube insertion.
3. An adult patient is brought to the emergency department after being rescued from a
structural fire. The patient exhibits soot around the mouth, hoarseness, stridor, and
burns to the face and neck. Which of the following is the most critical initial
management priority?
A. Initiating aggressive intravenous fluid resuscitation using the Parkland formula.
B. Applying cool, wet sterile dressings to the facial burns.
C. Securing a definitive airway through endotracheal intubation.
D. Administering high-flow oxygen via a non-rebreather mask.
C. Securing a definitive airway through endotracheal intubation.
Explanation: Inhalation injury associated with thermal and chemical trauma to the upper
airway causes rapid, progressive edema that can lead to complete airway obstruction. Given
the presence of stridor, hoarseness, and facial burns, immediate endotracheal intubation is
critical before supraglottic swelling completely closes the airway, making subsequent
intubation extremely difficult or impossible.
, 4. A nurse is evaluating a patient who presents with acute-onset right-sided weakness
and expressive aphasia that began 45 minutes prior to arrival. A non-contrast
computed tomography scan of the head is negative for acute hemorrhage. Which of
the following medications is indicated?
A. Aspirin 325 milligrams orally.
B. Intravenous alteplase (recombinant tissue plasminogen activator).
C. Unfractionated heparin infusion.
D. Mannitol 20 percent intravenous infusion.
B. Intravenous alteplase (recombinant tissue plasminogen activator).
Explanation: The patient is experiencing an acute ischemic stroke within the strict time
window for intravenous thrombolytic therapy (typically within 3 to 4.5 hours of symptom
onset), and intracranial hemorrhage has been ruled out by neuroimaging. Administering
intravenous alteplase helps dissolve the thrombus and restore cerebral perfusion,
significantly improving long-term neurological recovery.
5. A 45-year-old female presents to the emergency department with severe, colicky
right upper quadrant abdominal pain radiating to the right scapula, accompanied by
nausea and vomiting following a fatty meal. Vital signs are stable, but temperature is
38.3 degrees Celsius. Murphy sign is positive. Which diagnostic study is most
appropriate to confirm the suspected diagnosis?
A. Abdominal radiography.
B. Right upper quadrant ultrasonography.
C. Endoscopic retrograde cholangiopancreatography.
D. Computed tomography of the abdomen with oral contrast.
B. Right upper quadrant ultrasonography.
Explanation: The clinical presentation of right upper quadrant pain, fever, and a positive
Murphy sign strongly suggests acute cholecystitis. Right upper quadrant ultrasonography is
the preferred initial imaging modality because it can readily identify gallstones, gallbladder
wall thickening, pericholecystic fluid, and sonographic Murphy sign with high sensitivity and
specificity.
6. A patient presents with severe shortness of breath, bilateral rales, pink frothy
sputum, and a history of congestive heart failure. The blood pressure is 188/104
mmHg and the heart rate is 115 beats per minute. Which medication class is the
cornerstone of emergency management for acute decompensated heart failure with
volume overload and hypertension?
, A. Beta-adrenergic blockers.
B. Intravenous loop diuretics.
C. Intravenous positive inotropes.
D. Calcium channel blockers.
B. Intravenous loop diuretics.
Explanation: In acute decompensated heart failure with elevated blood pressure and
pulmonary edema, intravenous loop diuretics (such as furosemide) are essential to rapidly
reduce intravascular volume and preload. This reduction relieves pulmonary congestion and
decreases cardiac workload, improving oxygenation and hemodynamic stability.
7. A 22-year-old college student is brought to the emergency department by friends
due to acute agitation, confusion, visual hallucinations, and bizarre behavior.
Assessment reveals tachycardia, hypertension, mydriasis, diaphoresis, and
hyperthermia. Friends report the patient ingested an unknown powder at a party.
Which substance intoxication is most consistent with these clinical findings?
A. Opioids.
B. Benzodiazepines.
C. Amphetamines or cocaine.
D. Barbiturates.
C. Amphetamines or cocaine.
Explanation: Sympathomimetic toxicity, caused by substances such as amphetamines,
cocaine, or synthetic cathinones, produces classic signs of excessive central nervous system
and sympathetic nervous system stimulation. Manifestations include agitation,
hallucinations, tachycardia, hypertension, mydriasis, diaphoresis, and hyperthermia.
Management focuses on supportive care, sedation with benzodiazepines, and cooling
measures.
8. A trauma nurse is managing an adult patient who sustained a severe pelvic fracture
in a motorcycle crash. The patient's blood pressure is 80/50 mmHg, heart rate is 135
beats per minute, and skin is cool and pale. A pelvic binder has been applied. Which
of the following is the most appropriate next step in the resuscitation protocol?
A. Administering maintenance intravenous fluids at 100 milliliters per hour.
B. Initiating a massive transfusion protocol with uncrossed blood products.
C. Performing diagnostic peritoneal lavage.
DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED PASS | LATEST EXAM UPDATE
Core Domains
• Cardiovascular Emergencies
• Respiratory Emergencies
• Neurological Emergencies
• Trauma and Shock Management
• Medical and Toxicological Emergencies
• Behavioral and Psychiatric Emergencies
• Maxillofacial, Ocular, and Orthopedic Emergencies
• Professional, Legal, and Ethical Practice
Introduction
The purpose of the Certified Emergency Nurse exam is to validate specialized knowledge,
critical thinking, and clinical competency required for safe, effective emergency nursing
practice. This assessment evaluates essential skills and clinical judgment across diverse
emergency care domains. Utilizing a rigorous multiple-choice and scenario-based structure,
the exam emphasizes real-world application, rapid prioritization, and evidence-based
decision-making under high-stress conditions. Candidates must demonstrate proficiency in
recognizing life-threatening alterations, executing timely interventions, maintaining
regulatory and ethical standards, and optimizing patient outcomes in dynamic emergency
environments.
1. A 58-year-old male presents to the emergency department complaining of crushing
substernal chest pain radiating to the left arm and jaw, accompanied by diaphoresis
and nausea. A 12-lead electrocardiogram reveals ST-segment elevation of 3 mm in
leads V2 through V4. Which of the following immediate nursing interventions is the
absolute priority?
A. Administering sublingual nitroglycerin as prescribed.
B. Activating the cardiac catheterization team for primary percutaneous coronary
intervention.
C. Obtaining a serial set of cardiac biomarker blood samples.
D. Inserting a peripheral intravenous line for hydration.
B. Activating the cardiac catheterization team for primary percutaneous coronary
intervention.
, Explanation: The patient presents with classic signs and symptoms of an acute ST-
elevation myocardial infarction (STEMI) of the anterior wall. The primary goal in STEMI
management is rapid reperfusion of the occluded coronary artery to minimize myocardial
damage. Activating the catheterization laboratory immediately aligns with evidence-based
guidelines targeting a door-to-balloon time of under 90 minutes.
2. A trauma patient arrives via emergency medical services following a high-speed
motor vehicle collision. The patient is intubated, mechanically ventilated, and has
absent breath sounds on the left side of the chest along with tracheal deviation to
the right and profound hypotension. What is the most appropriate immediate
action?
A. Performing a needle decompression of the left second intercostal space.
B. Obtaining an emergent portable chest radiograph.
C. Administering a rapid fluid bolus of warm normal saline.
D. Inserting a large-bore chest tube in the fifth intercostal space.
A. Performing a needle decompression of the left second intercostal space.
Explanation: The clinical presentation of absent breath sounds, tracheal deviation, and
hypotension in a trauma patient strongly indicates a life-threatening tension pneumothorax.
This is an obstructive shock state that causes mediastinal shift and impaired venous return.
Needle decompression is an immediate, lifesaving intervention that converts a tension
pneumothorax to a simple pneumothorax prior to definitive chest tube insertion.
3. An adult patient is brought to the emergency department after being rescued from a
structural fire. The patient exhibits soot around the mouth, hoarseness, stridor, and
burns to the face and neck. Which of the following is the most critical initial
management priority?
A. Initiating aggressive intravenous fluid resuscitation using the Parkland formula.
B. Applying cool, wet sterile dressings to the facial burns.
C. Securing a definitive airway through endotracheal intubation.
D. Administering high-flow oxygen via a non-rebreather mask.
C. Securing a definitive airway through endotracheal intubation.
Explanation: Inhalation injury associated with thermal and chemical trauma to the upper
airway causes rapid, progressive edema that can lead to complete airway obstruction. Given
the presence of stridor, hoarseness, and facial burns, immediate endotracheal intubation is
critical before supraglottic swelling completely closes the airway, making subsequent
intubation extremely difficult or impossible.
, 4. A nurse is evaluating a patient who presents with acute-onset right-sided weakness
and expressive aphasia that began 45 minutes prior to arrival. A non-contrast
computed tomography scan of the head is negative for acute hemorrhage. Which of
the following medications is indicated?
A. Aspirin 325 milligrams orally.
B. Intravenous alteplase (recombinant tissue plasminogen activator).
C. Unfractionated heparin infusion.
D. Mannitol 20 percent intravenous infusion.
B. Intravenous alteplase (recombinant tissue plasminogen activator).
Explanation: The patient is experiencing an acute ischemic stroke within the strict time
window for intravenous thrombolytic therapy (typically within 3 to 4.5 hours of symptom
onset), and intracranial hemorrhage has been ruled out by neuroimaging. Administering
intravenous alteplase helps dissolve the thrombus and restore cerebral perfusion,
significantly improving long-term neurological recovery.
5. A 45-year-old female presents to the emergency department with severe, colicky
right upper quadrant abdominal pain radiating to the right scapula, accompanied by
nausea and vomiting following a fatty meal. Vital signs are stable, but temperature is
38.3 degrees Celsius. Murphy sign is positive. Which diagnostic study is most
appropriate to confirm the suspected diagnosis?
A. Abdominal radiography.
B. Right upper quadrant ultrasonography.
C. Endoscopic retrograde cholangiopancreatography.
D. Computed tomography of the abdomen with oral contrast.
B. Right upper quadrant ultrasonography.
Explanation: The clinical presentation of right upper quadrant pain, fever, and a positive
Murphy sign strongly suggests acute cholecystitis. Right upper quadrant ultrasonography is
the preferred initial imaging modality because it can readily identify gallstones, gallbladder
wall thickening, pericholecystic fluid, and sonographic Murphy sign with high sensitivity and
specificity.
6. A patient presents with severe shortness of breath, bilateral rales, pink frothy
sputum, and a history of congestive heart failure. The blood pressure is 188/104
mmHg and the heart rate is 115 beats per minute. Which medication class is the
cornerstone of emergency management for acute decompensated heart failure with
volume overload and hypertension?
, A. Beta-adrenergic blockers.
B. Intravenous loop diuretics.
C. Intravenous positive inotropes.
D. Calcium channel blockers.
B. Intravenous loop diuretics.
Explanation: In acute decompensated heart failure with elevated blood pressure and
pulmonary edema, intravenous loop diuretics (such as furosemide) are essential to rapidly
reduce intravascular volume and preload. This reduction relieves pulmonary congestion and
decreases cardiac workload, improving oxygenation and hemodynamic stability.
7. A 22-year-old college student is brought to the emergency department by friends
due to acute agitation, confusion, visual hallucinations, and bizarre behavior.
Assessment reveals tachycardia, hypertension, mydriasis, diaphoresis, and
hyperthermia. Friends report the patient ingested an unknown powder at a party.
Which substance intoxication is most consistent with these clinical findings?
A. Opioids.
B. Benzodiazepines.
C. Amphetamines or cocaine.
D. Barbiturates.
C. Amphetamines or cocaine.
Explanation: Sympathomimetic toxicity, caused by substances such as amphetamines,
cocaine, or synthetic cathinones, produces classic signs of excessive central nervous system
and sympathetic nervous system stimulation. Manifestations include agitation,
hallucinations, tachycardia, hypertension, mydriasis, diaphoresis, and hyperthermia.
Management focuses on supportive care, sedation with benzodiazepines, and cooling
measures.
8. A trauma nurse is managing an adult patient who sustained a severe pelvic fracture
in a motorcycle crash. The patient's blood pressure is 80/50 mmHg, heart rate is 135
beats per minute, and skin is cool and pale. A pelvic binder has been applied. Which
of the following is the most appropriate next step in the resuscitation protocol?
A. Administering maintenance intravenous fluids at 100 milliliters per hour.
B. Initiating a massive transfusion protocol with uncrossed blood products.
C. Performing diagnostic peritoneal lavage.
