Emergency Nurse Practitioner ENP Ultimate Exam
This specialized clinical test-preparation guide delivers high-yield practice questions,
verified answers, and comprehensive diagnostic rationales modeled directly after the
official Emergency Nurse Practitioner board certification exam framework. It thoroughly
addresses advanced emergency competencies, including rapid differential diagnosis
formulation, trauma stabilization tracking, advanced procedural skills, and evidence-
based pharmacotherapeutic management for acute multi-system conditions. Emergency
care clinicians and advanced practice candidates will master complex clinical decision-
making metrics, triage prioritization, and disaster management guidelines to pass their
national board evaluation.
1. A 45-year-old male presents with sudden onset of severe, tearing chest pain
radiating to his back. His blood pressure is 180/95 in the right arm and 140/85 in
the left arm. What is the most likely diagnosis?
A) Acute myocardial infarction
B) Pulmonary embolism
C) Aortic dissection
D) Pericarditis
Rationale: The classic presentation of aortic dissection includes acute, severe, tearing chest
pain radiating to the back, with a difference in blood pressure between arms (>20 mmHg).
Immediate CT angiography is indicated.
2. A 62-year-old woman presents with acute onset of right-sided weakness, facial
droop, and expressive aphasia. Her symptoms began 90 minutes ago. What is the
most appropriate next step?
A) Aspirin 324 mg orally
B) Head CT without contrast stat
C) tPA administration immediately
D) MRI brain with diffusion-weighted imaging
Rationale: For acute stroke symptoms, a non-contrast head CT must be performed
emergently to rule out hemorrhagic stroke before any thrombolytic therapy is considered.
3. A 28-year-old man is brought in by EMS after a motor vehicle collision. He is
confused, has a GCS of 13, and has bruising around both eyes (raccoon eyes) and
behind his ears (Battle's sign). What condition is suspected?
A) Concussion
,B) Basilar skull fracture
C) Subdural hematoma
D) Cervical spine fracture
Rationale: Raccoon eyes (periorbital ecchymosis) and Battle's sign (mastoid ecchymosis)
are classic signs of basilar skull fracture, often associated with CSF rhinorrhea or otorrhea.
4. A 3-year-old child presents with a high fever, stridor, drooling, and is sitting
upright in the tripod position. What is the most appropriate first action?
A) Perform a throat culture
B) Prepare for emergency airway management
C) Administer nebulized racemic epinephrine
D) Obtain a lateral neck X-ray
Rationale: The tripod position, stridor, and drooling in a febrile child suggest epiglottitis,
which can rapidly progress to airway obstruction. Airway management is the priority.
5. A 55-year-old male with a history of alcoholism presents with confusion, ataxia,
and ophthalmoplegia. What is the most likely diagnosis?
A) Wernicke's encephalopathy
B) Delirium tremens
C) Hepatic encephalopathy
D) Subdural hematoma
Rationale: The triad of confusion, ataxia, and ophthalmoplegia is classic for Wernicke's
encephalopathy due to thiamine deficiency. Immediate IV thiamine is required.
6. A 70-year-old female presents with sudden onset of severe abdominal pain and
a pulsatile abdominal mass. What is the most likely diagnosis?
A) Acute pancreatitis
B) Ruptured abdominal aortic aneurysm
C) Renal colic
D) Bowel obstruction
Rationale: A pulsatile abdominal mass with severe pain suggests an abdominal aortic
aneurysm. Immediate surgical consultation is required.
7. A 25-year-old male presents with a stab wound to the chest. He is hypotensive,
has distended neck veins, and muffled heart sounds. What condition should be
suspected?
A) Tension pneumothorax
B) Cardiac tamponade
,C) Hemothorax
D) Aortic dissection
Rationale: Beck's triad (hypotension, distended neck veins, muffled heart sounds) is classic
for cardiac tamponade. Immediate pericardiocentesis may be required.
8. A 4-week-old infant presents with projectile vomiting after feeding and a
palpable olive-shaped mass in the epigastrium. What is the most likely diagnosis?
A) Gastroesophageal reflux
B) Pyloric stenosis
C) Intussusception
D) Volvulus
Rationale: Projectile vomiting and an olive-shaped mass in a 4-week-old infant are classic
for hypertrophic pyloric stenosis.
9. A 68-year-old male presents with sudden onset of painless monocular vision
loss. What condition should be suspected?
A) Glaucoma
B) Central retinal artery occlusion
C) Cataracts
D) Macular degeneration
Rationale: Sudden painless vision loss suggests central retinal artery occlusion, an
ophthalmologic emergency.
10. A 32-year-old female presents with a malar rash, photosensitivity, and oral
ulcers. Which lab is most specific for SLE?
A) ANA
B) Anti-dsDNA
C) RF
D) ESR
Rationale: Anti-dsDNA is highly specific for systemic lupus erythematosus and correlates
with disease activity.
11. A 6-month-old infant presents with fever, irritability, and a bulging fontanel.
Which action is priority?
A) Administer antipyretic
B) Perform lumbar puncture
C) Start antibiotics
D) Order CT scan
, Rationale: Bulging fontanel suggests meningitis; lumbar puncture is diagnostic, but
antibiotics should not be delayed.
12. A 45-year-old male presents with sudden onset of severe headache, "worst of
my life." What diagnosis should be suspected?
A) Migraine
B) Tension headache
C) Subarachnoid hemorrhage
D) Cluster headache
Rationale: Thunderclap headache is classic for subarachnoid hemorrhage; requires
immediate CT scan.
13. A 70-year-old male presents with acute onset of confusion and a urinary tract
infection. Which condition is most likely?
A) Dementia
B) Delirium
C) Depression
D) Psychosis
Rationale: Delirium is an acute confusional state often triggered by infection; it is
reversible with treatment of the underlying cause.
14. A 55-year-old female presents with sudden onset of severe abdominal pain
and distension. Which diagnosis should be suspected?
A) Gastroenteritis
B) Bowel obstruction
C) Appendicitis
D) Peptic ulcer
Rationale: Sudden severe abdominal pain with distension suggests bowel obstruction;
obtain abdominal X-ray and CT.
15. A 3-year-old child presents with barking cough and stridor. Which condition is
most likely?
A) Epiglottitis
B) Croup
C) Bronchiolitis
D) Asthma
Rationale: Croup causes barking cough, stridor, and hoarseness.
This specialized clinical test-preparation guide delivers high-yield practice questions,
verified answers, and comprehensive diagnostic rationales modeled directly after the
official Emergency Nurse Practitioner board certification exam framework. It thoroughly
addresses advanced emergency competencies, including rapid differential diagnosis
formulation, trauma stabilization tracking, advanced procedural skills, and evidence-
based pharmacotherapeutic management for acute multi-system conditions. Emergency
care clinicians and advanced practice candidates will master complex clinical decision-
making metrics, triage prioritization, and disaster management guidelines to pass their
national board evaluation.
1. A 45-year-old male presents with sudden onset of severe, tearing chest pain
radiating to his back. His blood pressure is 180/95 in the right arm and 140/85 in
the left arm. What is the most likely diagnosis?
A) Acute myocardial infarction
B) Pulmonary embolism
C) Aortic dissection
D) Pericarditis
Rationale: The classic presentation of aortic dissection includes acute, severe, tearing chest
pain radiating to the back, with a difference in blood pressure between arms (>20 mmHg).
Immediate CT angiography is indicated.
2. A 62-year-old woman presents with acute onset of right-sided weakness, facial
droop, and expressive aphasia. Her symptoms began 90 minutes ago. What is the
most appropriate next step?
A) Aspirin 324 mg orally
B) Head CT without contrast stat
C) tPA administration immediately
D) MRI brain with diffusion-weighted imaging
Rationale: For acute stroke symptoms, a non-contrast head CT must be performed
emergently to rule out hemorrhagic stroke before any thrombolytic therapy is considered.
3. A 28-year-old man is brought in by EMS after a motor vehicle collision. He is
confused, has a GCS of 13, and has bruising around both eyes (raccoon eyes) and
behind his ears (Battle's sign). What condition is suspected?
A) Concussion
,B) Basilar skull fracture
C) Subdural hematoma
D) Cervical spine fracture
Rationale: Raccoon eyes (periorbital ecchymosis) and Battle's sign (mastoid ecchymosis)
are classic signs of basilar skull fracture, often associated with CSF rhinorrhea or otorrhea.
4. A 3-year-old child presents with a high fever, stridor, drooling, and is sitting
upright in the tripod position. What is the most appropriate first action?
A) Perform a throat culture
B) Prepare for emergency airway management
C) Administer nebulized racemic epinephrine
D) Obtain a lateral neck X-ray
Rationale: The tripod position, stridor, and drooling in a febrile child suggest epiglottitis,
which can rapidly progress to airway obstruction. Airway management is the priority.
5. A 55-year-old male with a history of alcoholism presents with confusion, ataxia,
and ophthalmoplegia. What is the most likely diagnosis?
A) Wernicke's encephalopathy
B) Delirium tremens
C) Hepatic encephalopathy
D) Subdural hematoma
Rationale: The triad of confusion, ataxia, and ophthalmoplegia is classic for Wernicke's
encephalopathy due to thiamine deficiency. Immediate IV thiamine is required.
6. A 70-year-old female presents with sudden onset of severe abdominal pain and
a pulsatile abdominal mass. What is the most likely diagnosis?
A) Acute pancreatitis
B) Ruptured abdominal aortic aneurysm
C) Renal colic
D) Bowel obstruction
Rationale: A pulsatile abdominal mass with severe pain suggests an abdominal aortic
aneurysm. Immediate surgical consultation is required.
7. A 25-year-old male presents with a stab wound to the chest. He is hypotensive,
has distended neck veins, and muffled heart sounds. What condition should be
suspected?
A) Tension pneumothorax
B) Cardiac tamponade
,C) Hemothorax
D) Aortic dissection
Rationale: Beck's triad (hypotension, distended neck veins, muffled heart sounds) is classic
for cardiac tamponade. Immediate pericardiocentesis may be required.
8. A 4-week-old infant presents with projectile vomiting after feeding and a
palpable olive-shaped mass in the epigastrium. What is the most likely diagnosis?
A) Gastroesophageal reflux
B) Pyloric stenosis
C) Intussusception
D) Volvulus
Rationale: Projectile vomiting and an olive-shaped mass in a 4-week-old infant are classic
for hypertrophic pyloric stenosis.
9. A 68-year-old male presents with sudden onset of painless monocular vision
loss. What condition should be suspected?
A) Glaucoma
B) Central retinal artery occlusion
C) Cataracts
D) Macular degeneration
Rationale: Sudden painless vision loss suggests central retinal artery occlusion, an
ophthalmologic emergency.
10. A 32-year-old female presents with a malar rash, photosensitivity, and oral
ulcers. Which lab is most specific for SLE?
A) ANA
B) Anti-dsDNA
C) RF
D) ESR
Rationale: Anti-dsDNA is highly specific for systemic lupus erythematosus and correlates
with disease activity.
11. A 6-month-old infant presents with fever, irritability, and a bulging fontanel.
Which action is priority?
A) Administer antipyretic
B) Perform lumbar puncture
C) Start antibiotics
D) Order CT scan
, Rationale: Bulging fontanel suggests meningitis; lumbar puncture is diagnostic, but
antibiotics should not be delayed.
12. A 45-year-old male presents with sudden onset of severe headache, "worst of
my life." What diagnosis should be suspected?
A) Migraine
B) Tension headache
C) Subarachnoid hemorrhage
D) Cluster headache
Rationale: Thunderclap headache is classic for subarachnoid hemorrhage; requires
immediate CT scan.
13. A 70-year-old male presents with acute onset of confusion and a urinary tract
infection. Which condition is most likely?
A) Dementia
B) Delirium
C) Depression
D) Psychosis
Rationale: Delirium is an acute confusional state often triggered by infection; it is
reversible with treatment of the underlying cause.
14. A 55-year-old female presents with sudden onset of severe abdominal pain
and distension. Which diagnosis should be suspected?
A) Gastroenteritis
B) Bowel obstruction
C) Appendicitis
D) Peptic ulcer
Rationale: Sudden severe abdominal pain with distension suggests bowel obstruction;
obtain abdominal X-ray and CT.
15. A 3-year-old child presents with barking cough and stridor. Which condition is
most likely?
A) Epiglottitis
B) Croup
C) Bronchiolitis
D) Asthma
Rationale: Croup causes barking cough, stridor, and hoarseness.
