1
APEA Pre-Predictor Actual Exam Questions with Correct Answers &
Rationales | Complete NP Board Exam Study Guide ||Complete A+
Guide
Question 1: A 65-year-old male with a history of chronic obstructive pulmonary disease (COPD) presents with increasing shortness of breath, a productive
cough with purulent green sputum, and low-grade fever over the last 3 days. Which arterial blood gas (ABG) finding is most characteristic of acute-on-
chronic respiratory failure in this patient?
A. pH 7.48, PaCO2 28 mmHg, HCO3 22 mEq/L
B. pH 7.32, PaCO2 58 mmHg, HCO3 30 mEq/L
C. pH 7.50, PaCO2 32 mmHg, HCO3 18 mEq/L
D. pH 7.40, PaCO2 40 mmHg, HCO3 24 mEq/L
CORRECT ANSWER: B. pH 7.32, PaCO2 58 mmHg, HCO3 30 mEq/L
Rationale: Patients with chronic obstructive pulmonary disease often develop chronic respiratory acidosis compensated by metabolic alkalosis (elevated
HCO3). During an acute exacerbation, further carbon dioxide retention occurs, which overwhelms the previous metabolic compensation, leading to acute-on-
chronic respiratory failure characterized by an uncompensated or partially compensated respiratory acidosis with a lowered pH, elevated PaCO2, and elevated
HCO3.
Question 2: A 28-year-old female presents to the clinic complaining of fatigue, weight gain, constipation, and cold intolerance over the past 4 months.
Laboratory testing reveals a thyroid-stimulating hormone (TSH) level of 12.5 mIU/L (normal 0.4–4.0 mIU/L) and a low free T4 level. What is the most
common etiology of this condition in developed countries?
A. Iodine deficiency
B. Hashimoto's thyroiditis
C. Subacute granulomatous thyroiditis
D. Postpartum thyroiditis
CORRECT ANSWER: B. Hashimoto's thyroiditis
Rationale: Hashimoto's thyroiditis is an autoimmune disorder and the leading cause of primary hypothyroidism in iodine-sufficient regions like the United
States. It is characterized by the destruction of thyroid tissue by lymphocytes and autoantibodies, most notably anti-thyroid peroxidase (anti-TPO) and anti-
thyroglobulin antibodies, leading to progressive thyroid failure.
Question 3: A nurse practitioner is evaluating a 54-year-old male with a 30 pack-year smoking history who presents with a 2-month history of a persistent
cough, hemoptysis, and a 15-pound unintentional weight loss. A chest radiograph demonstrates a centrally located right hilar mass. Which lung cancer
subtype is most strongly associated with these clinical features and smoking history?
A. Adenocarcinoma
B. Squamous cell carcinoma
C. Large cell carcinoma
D. Bronchoalveolar carcinoma
,CORRECT ANSWER: B. Squamous cell carcinoma
2
Rationale: Squamous cell carcinoma of the lung typically presents as a centrally located mass and is strongly linked to cigarette smoking. It frequently
manifests with symptoms of bronchial obstruction, such as cough, hemoptysis, and post-obstructive pneumonia. It is also well known for being associated
with paraneoplastic hypercalcemia driven by parathyroid hormone-related protein (PTHrP) secretion.
Question 4: An 18-year-old college student presents with a 4-day history of severe sore throat, profound fatigue, low-grade fever, and posterior cervical
lymphadenopathy. Physical examination reveals tonsillar enlargement with a whitish exudate and splenomegaly. Which diagnostic test is most appropriate
for initial confirmation of infectious mononucleosis?
A. Throat culture for group A beta-hemolytic Streptococcus
B. Heterophile antibody test (Monospot)
C. Epstein-Barr virus nuclear antigen (EBNA) IgG titer
D. Antistreptolysin O (ASO) titer
CORRECT ANSWER: B. Heterophile antibody test (Monospot)
Rationale: The heterophile antibody test (Monospot) is the standard rapid screening test used to detect heterophile antibodies produced in response to Epstein-
Barr virus (EBV) infection, which causes infectious mononucleosis. While its sensitivity can be lower in the first week of symptoms, it remains the primary
choice for initial confirmation due to its high specificity.
Question 5: A 45-year-old female presents with complaints of symmetric joint stiffness in her hands and wrists lasting more than an hour every morning,
accompanied by painful swelling of the metacarpophalangeal (MCP) and proximal interphalangeal (PIP) joints. Which initial laboratory evaluation is most
sensitive and specific for diagnosing rheumatoid arthritis?
A. Antinuclear antibody (ANA)
B. C-reactive protein (CRP) alone
C. Anti-cyclic citrullinated peptide (anti-CCP) antibodies
D. Erythrocyte sedimentation rate (ESR) alone
CORRECT ANSWER: C. Anti-cyclic citrullinated peptide (anti-CCP) antibodies
Rationale: Anti-cyclic citrullinated peptide (anti-CCP) antibodies have a specificity of around 95% for rheumatoid arthritis, making them significantly more
specific than rheumatoid factor (RF) and highly valuable for early diagnosis. Rheumatoid arthritis typically presents with symmetric polyarthritis targeting
the small joints of the hands and wrists with prolonged morning stiffness.
Question 6: A 72-year-old male with a history of hypertension and hyperlipidemia presents with sudden-onset right-sided weakness, expressive aphasia, and
right facial droop starting 90 minutes ago. Non-contrast computed tomography (CT) of the brain reveals no acute hemorrhage. What is the most appropriate
immediate management step?
A. Initiate intravenous thrombolytic therapy with alteplase or tenecteplase if no contraindications exist
B. Administer high-dose oral aspirin and clopidogrel and discharge home
C. Order a follow-up magnetic resonance imaging (MRI) of the brain in 48 hours
D. Perform an immediate lumbar puncture to rule out subarachnoid hemorrhage
CORRECT ANSWER: A. Initiate intravenous thrombolytic therapy with alteplase or tenecteplase if no contraindications exist
Rationale: For patients presenting within the acute window (typically within 3 to 4.5 hours of symptom onset) of an acute ischemic stroke with no evidence of
intracranial hemorrhage on CT, intravenous thrombolysis is the standard of care to restore cerebral blood flow and minimize permanent neurological deficits.
Question 7: A 32-year-old pregnant woman at 28 weeks gestation presents with painful, bright red vaginal bleeding. Her vital signs are stable, and the fetus
is active with a normal baseline heart rate. Abdominal examination reveals a soft, non-tender uterus. What is the most appropriate initial diagnostic
,procedure to perform?
3
A. Digital pelvic examination
B. Transabdominal ultrasound followed by transvaginal ultrasound
C. Sterile speculum examination combined with amniocentesis
D. Immediate induction of labor
CORRECT ANSWER: B. Transabdominal ultrasound followed by transvaginal ultrasound
Rationale: In a pregnant patient presenting with third-trimester bleeding suspected to be placenta previa, a digital vaginal examination is strictly
contraindicated because it can provoke catastrophic hemorrhage. Transabdominal ultrasound is the initial imaging modality of choice, supplemented by
transvaginal ultrasound for accurate placental localization relative to the internal cervical os.
Question 8: A 60-year-old male with a history of long-standing uncontrolled hypertension presents with sudden, tearing chest pain that radiates sharply to
his back between the shoulder blades. Blood pressure is 190/100 mmHg in the right arm and 140/80 mmHg in the left arm. What is the most diagnostic
imaging modality for establishing the diagnosis of aortic dissection?
A. Standard 12-lead electrocardiogram (ECG)
B. Plain chest radiograph showing widened mediastinum
C. Computed tomography angiography (CTA) of the chest
D. Transthoracic echocardiogram (TTE)
CORRECT ANSWER: C. Computed tomography angiography (CTA) of the chest
Rationale: Computed tomography angiography (CTA) of the chest is the imaging modality of choice for suspected aortic dissection due to its high sensitivity
and specificity in visualizing the intimal flap, true and false lumens, and extent of involvement throughout the aorta. A blood pressure discrepancy between
arms is a classic physical finding.
Question 9: A 50-year-old male presents with recurrent episodes of severe, excruciating pain, erythema, swelling, and warmth centered around the first
metatarsophalangeal joint. Arthrocentesis of the affected joint reveals negatively birefringent needle-shaped crystals under polarized light microscopy. What
is the primary pathophysiology underlying this condition?
A. Deposition of calcium pyrophosphate dihydrate crystals
B. Hyperuricemia leading to monosodium urate crystal precipitation
C. Autoimmune-mediated synovial inflammation
D. Chronic bacterial colonization of the joint space
CORRECT ANSWER: B. Hyperuricemia leading to monosodium urate crystal precipitation
Rationale: Gout is caused by the precipitation of monosodium urate crystals in joints and surrounding tissues secondary to chronic hyperuricemia.
Arthrocentesis showing negatively birefringent needle-shaped crystals under polarized light is diagnostic. Calcium pyrophosphate dihydrate crystals are
associated with pseudogout and are positively birefringent and rhomboid.
Question 10: A 24-year-old female presents with recurrent, painful vesicular lesions on her labia majora that recur 3 to 4 times a year. She reports that the
lesions are preceded by a tingling and burning sensation before blistering and ulcerating. Which medication is appropriate for episodic suppressive therapy
to reduce outbreak duration?
A. Topical hydrocortisone 2.5% cream
B. Oral valacyclovir taken at the onset of prodromal symptoms
C. Intravenous acyclovir daily for 6 months
D. Oral doxycycline for 14 days
, CORRECT ANSWER: B. Oral valacyclovir taken at the onset of prodromal symptoms
4
Rationale: Genital herpes simplex virus outbreaks are effectively managed with oral antiviral agents such as valacyclovir, acyclovir, or famciclovir. Initiating
therapy at the earliest sign of prodromal symptoms (tingling, burning) or daily suppressive therapy significantly decreases lesion healing time, pain severity,
and viral shedding.
Question 11: A 67-year-old male is evaluated for progressive cognitive decline over the past two years, characterized by short-term memory loss,
disorientation to place and time, and difficulty managing finances. His family notes he has also developed personality changes and apathy. What is the most
common cause of dementia in older adults?
A. Vascular dementia
B. Dementia with Lewy bodies
C. Alzheimer's disease
D. Frontotemporal lobar degeneration
CORRECT ANSWER: C. Alzheimer's disease
Rationale: Alzheimer's disease accounts for 60% to 80% of all dementia cases in older adults. It is characterized histopathologically by the extracellular
accumulation of beta-amyloid plaques and intracellular hyperphosphorylated tau protein neurofibrillary tangles, leading to progressive neuronal loss and
cerebral atrophy, predominantly in the temporoparietal regions.
Question 12: A 42-year-old female presents with frequent episodes of throbbing, unilateral headaches accompanied by nausea, vomiting, photophobia, and
phonophobia, lasting between 12 to 24 hours. She notes that her headaches are often preceded by visual disturbances consisting of shimmering zigzag lines
in her visual field. What is the appropriate classification of this headache subtype?
A. Chronic tension-type headache
B. Migraine with aura
C. Cluster headache
D. Medication overuse headache
CORRECT ANSWER: B. Migraine with aura
Rationale: Migraines are characterized by recurrent moderate-to-severe headaches that are frequently pulsating, unilateral, and associated with autonomic
symptoms like nausea and photophobia. When transient focal neurological symptoms, such as visual auras (zigzag lines, scotomas), precede or accompany
the headache, it is classified as a migraine with aura.
Question 13: A 36-year-old male presents with recurrent heartburn, regurgitation of bitter fluid, and a chronic dry cough that worsens when lying flat after
meals. He has tried over-the-counter antacids with minimal relief. What is the most appropriate initial pharmacologic therapy for chronic gastroesophageal
reflux disease (GERD)?
A. Daily proton pump inhibitor (PPI) such as omeprazole
B. Continuous high-dose antacid suspension
C. Long-term systemic corticosteroid therapy
D. Broad-spectrum oral antibiotic regimen
CORRECT ANSWER: A. Daily proton pump inhibitor (PPI) such as omeprazole
Rationale: Proton pump inhibitors (PPIs) are the most potent and effective medications for healing erosive esophagitis and providing symptom relief in
chronic gastroesophageal reflux disease (GERD). They work by irreversibly inhibiting the H+/K+ ATPase pump in gastric parietal cells, significantly
reducing gastric acid secretion.
Question 14: A 52-year-old male with a history of heavy alcohol use is admitted to the hospital with acute, severe epigastric abdominal pain radiating
APEA Pre-Predictor Actual Exam Questions with Correct Answers &
Rationales | Complete NP Board Exam Study Guide ||Complete A+
Guide
Question 1: A 65-year-old male with a history of chronic obstructive pulmonary disease (COPD) presents with increasing shortness of breath, a productive
cough with purulent green sputum, and low-grade fever over the last 3 days. Which arterial blood gas (ABG) finding is most characteristic of acute-on-
chronic respiratory failure in this patient?
A. pH 7.48, PaCO2 28 mmHg, HCO3 22 mEq/L
B. pH 7.32, PaCO2 58 mmHg, HCO3 30 mEq/L
C. pH 7.50, PaCO2 32 mmHg, HCO3 18 mEq/L
D. pH 7.40, PaCO2 40 mmHg, HCO3 24 mEq/L
CORRECT ANSWER: B. pH 7.32, PaCO2 58 mmHg, HCO3 30 mEq/L
Rationale: Patients with chronic obstructive pulmonary disease often develop chronic respiratory acidosis compensated by metabolic alkalosis (elevated
HCO3). During an acute exacerbation, further carbon dioxide retention occurs, which overwhelms the previous metabolic compensation, leading to acute-on-
chronic respiratory failure characterized by an uncompensated or partially compensated respiratory acidosis with a lowered pH, elevated PaCO2, and elevated
HCO3.
Question 2: A 28-year-old female presents to the clinic complaining of fatigue, weight gain, constipation, and cold intolerance over the past 4 months.
Laboratory testing reveals a thyroid-stimulating hormone (TSH) level of 12.5 mIU/L (normal 0.4–4.0 mIU/L) and a low free T4 level. What is the most
common etiology of this condition in developed countries?
A. Iodine deficiency
B. Hashimoto's thyroiditis
C. Subacute granulomatous thyroiditis
D. Postpartum thyroiditis
CORRECT ANSWER: B. Hashimoto's thyroiditis
Rationale: Hashimoto's thyroiditis is an autoimmune disorder and the leading cause of primary hypothyroidism in iodine-sufficient regions like the United
States. It is characterized by the destruction of thyroid tissue by lymphocytes and autoantibodies, most notably anti-thyroid peroxidase (anti-TPO) and anti-
thyroglobulin antibodies, leading to progressive thyroid failure.
Question 3: A nurse practitioner is evaluating a 54-year-old male with a 30 pack-year smoking history who presents with a 2-month history of a persistent
cough, hemoptysis, and a 15-pound unintentional weight loss. A chest radiograph demonstrates a centrally located right hilar mass. Which lung cancer
subtype is most strongly associated with these clinical features and smoking history?
A. Adenocarcinoma
B. Squamous cell carcinoma
C. Large cell carcinoma
D. Bronchoalveolar carcinoma
,CORRECT ANSWER: B. Squamous cell carcinoma
2
Rationale: Squamous cell carcinoma of the lung typically presents as a centrally located mass and is strongly linked to cigarette smoking. It frequently
manifests with symptoms of bronchial obstruction, such as cough, hemoptysis, and post-obstructive pneumonia. It is also well known for being associated
with paraneoplastic hypercalcemia driven by parathyroid hormone-related protein (PTHrP) secretion.
Question 4: An 18-year-old college student presents with a 4-day history of severe sore throat, profound fatigue, low-grade fever, and posterior cervical
lymphadenopathy. Physical examination reveals tonsillar enlargement with a whitish exudate and splenomegaly. Which diagnostic test is most appropriate
for initial confirmation of infectious mononucleosis?
A. Throat culture for group A beta-hemolytic Streptococcus
B. Heterophile antibody test (Monospot)
C. Epstein-Barr virus nuclear antigen (EBNA) IgG titer
D. Antistreptolysin O (ASO) titer
CORRECT ANSWER: B. Heterophile antibody test (Monospot)
Rationale: The heterophile antibody test (Monospot) is the standard rapid screening test used to detect heterophile antibodies produced in response to Epstein-
Barr virus (EBV) infection, which causes infectious mononucleosis. While its sensitivity can be lower in the first week of symptoms, it remains the primary
choice for initial confirmation due to its high specificity.
Question 5: A 45-year-old female presents with complaints of symmetric joint stiffness in her hands and wrists lasting more than an hour every morning,
accompanied by painful swelling of the metacarpophalangeal (MCP) and proximal interphalangeal (PIP) joints. Which initial laboratory evaluation is most
sensitive and specific for diagnosing rheumatoid arthritis?
A. Antinuclear antibody (ANA)
B. C-reactive protein (CRP) alone
C. Anti-cyclic citrullinated peptide (anti-CCP) antibodies
D. Erythrocyte sedimentation rate (ESR) alone
CORRECT ANSWER: C. Anti-cyclic citrullinated peptide (anti-CCP) antibodies
Rationale: Anti-cyclic citrullinated peptide (anti-CCP) antibodies have a specificity of around 95% for rheumatoid arthritis, making them significantly more
specific than rheumatoid factor (RF) and highly valuable for early diagnosis. Rheumatoid arthritis typically presents with symmetric polyarthritis targeting
the small joints of the hands and wrists with prolonged morning stiffness.
Question 6: A 72-year-old male with a history of hypertension and hyperlipidemia presents with sudden-onset right-sided weakness, expressive aphasia, and
right facial droop starting 90 minutes ago. Non-contrast computed tomography (CT) of the brain reveals no acute hemorrhage. What is the most appropriate
immediate management step?
A. Initiate intravenous thrombolytic therapy with alteplase or tenecteplase if no contraindications exist
B. Administer high-dose oral aspirin and clopidogrel and discharge home
C. Order a follow-up magnetic resonance imaging (MRI) of the brain in 48 hours
D. Perform an immediate lumbar puncture to rule out subarachnoid hemorrhage
CORRECT ANSWER: A. Initiate intravenous thrombolytic therapy with alteplase or tenecteplase if no contraindications exist
Rationale: For patients presenting within the acute window (typically within 3 to 4.5 hours of symptom onset) of an acute ischemic stroke with no evidence of
intracranial hemorrhage on CT, intravenous thrombolysis is the standard of care to restore cerebral blood flow and minimize permanent neurological deficits.
Question 7: A 32-year-old pregnant woman at 28 weeks gestation presents with painful, bright red vaginal bleeding. Her vital signs are stable, and the fetus
is active with a normal baseline heart rate. Abdominal examination reveals a soft, non-tender uterus. What is the most appropriate initial diagnostic
,procedure to perform?
3
A. Digital pelvic examination
B. Transabdominal ultrasound followed by transvaginal ultrasound
C. Sterile speculum examination combined with amniocentesis
D. Immediate induction of labor
CORRECT ANSWER: B. Transabdominal ultrasound followed by transvaginal ultrasound
Rationale: In a pregnant patient presenting with third-trimester bleeding suspected to be placenta previa, a digital vaginal examination is strictly
contraindicated because it can provoke catastrophic hemorrhage. Transabdominal ultrasound is the initial imaging modality of choice, supplemented by
transvaginal ultrasound for accurate placental localization relative to the internal cervical os.
Question 8: A 60-year-old male with a history of long-standing uncontrolled hypertension presents with sudden, tearing chest pain that radiates sharply to
his back between the shoulder blades. Blood pressure is 190/100 mmHg in the right arm and 140/80 mmHg in the left arm. What is the most diagnostic
imaging modality for establishing the diagnosis of aortic dissection?
A. Standard 12-lead electrocardiogram (ECG)
B. Plain chest radiograph showing widened mediastinum
C. Computed tomography angiography (CTA) of the chest
D. Transthoracic echocardiogram (TTE)
CORRECT ANSWER: C. Computed tomography angiography (CTA) of the chest
Rationale: Computed tomography angiography (CTA) of the chest is the imaging modality of choice for suspected aortic dissection due to its high sensitivity
and specificity in visualizing the intimal flap, true and false lumens, and extent of involvement throughout the aorta. A blood pressure discrepancy between
arms is a classic physical finding.
Question 9: A 50-year-old male presents with recurrent episodes of severe, excruciating pain, erythema, swelling, and warmth centered around the first
metatarsophalangeal joint. Arthrocentesis of the affected joint reveals negatively birefringent needle-shaped crystals under polarized light microscopy. What
is the primary pathophysiology underlying this condition?
A. Deposition of calcium pyrophosphate dihydrate crystals
B. Hyperuricemia leading to monosodium urate crystal precipitation
C. Autoimmune-mediated synovial inflammation
D. Chronic bacterial colonization of the joint space
CORRECT ANSWER: B. Hyperuricemia leading to monosodium urate crystal precipitation
Rationale: Gout is caused by the precipitation of monosodium urate crystals in joints and surrounding tissues secondary to chronic hyperuricemia.
Arthrocentesis showing negatively birefringent needle-shaped crystals under polarized light is diagnostic. Calcium pyrophosphate dihydrate crystals are
associated with pseudogout and are positively birefringent and rhomboid.
Question 10: A 24-year-old female presents with recurrent, painful vesicular lesions on her labia majora that recur 3 to 4 times a year. She reports that the
lesions are preceded by a tingling and burning sensation before blistering and ulcerating. Which medication is appropriate for episodic suppressive therapy
to reduce outbreak duration?
A. Topical hydrocortisone 2.5% cream
B. Oral valacyclovir taken at the onset of prodromal symptoms
C. Intravenous acyclovir daily for 6 months
D. Oral doxycycline for 14 days
, CORRECT ANSWER: B. Oral valacyclovir taken at the onset of prodromal symptoms
4
Rationale: Genital herpes simplex virus outbreaks are effectively managed with oral antiviral agents such as valacyclovir, acyclovir, or famciclovir. Initiating
therapy at the earliest sign of prodromal symptoms (tingling, burning) or daily suppressive therapy significantly decreases lesion healing time, pain severity,
and viral shedding.
Question 11: A 67-year-old male is evaluated for progressive cognitive decline over the past two years, characterized by short-term memory loss,
disorientation to place and time, and difficulty managing finances. His family notes he has also developed personality changes and apathy. What is the most
common cause of dementia in older adults?
A. Vascular dementia
B. Dementia with Lewy bodies
C. Alzheimer's disease
D. Frontotemporal lobar degeneration
CORRECT ANSWER: C. Alzheimer's disease
Rationale: Alzheimer's disease accounts for 60% to 80% of all dementia cases in older adults. It is characterized histopathologically by the extracellular
accumulation of beta-amyloid plaques and intracellular hyperphosphorylated tau protein neurofibrillary tangles, leading to progressive neuronal loss and
cerebral atrophy, predominantly in the temporoparietal regions.
Question 12: A 42-year-old female presents with frequent episodes of throbbing, unilateral headaches accompanied by nausea, vomiting, photophobia, and
phonophobia, lasting between 12 to 24 hours. She notes that her headaches are often preceded by visual disturbances consisting of shimmering zigzag lines
in her visual field. What is the appropriate classification of this headache subtype?
A. Chronic tension-type headache
B. Migraine with aura
C. Cluster headache
D. Medication overuse headache
CORRECT ANSWER: B. Migraine with aura
Rationale: Migraines are characterized by recurrent moderate-to-severe headaches that are frequently pulsating, unilateral, and associated with autonomic
symptoms like nausea and photophobia. When transient focal neurological symptoms, such as visual auras (zigzag lines, scotomas), precede or accompany
the headache, it is classified as a migraine with aura.
Question 13: A 36-year-old male presents with recurrent heartburn, regurgitation of bitter fluid, and a chronic dry cough that worsens when lying flat after
meals. He has tried over-the-counter antacids with minimal relief. What is the most appropriate initial pharmacologic therapy for chronic gastroesophageal
reflux disease (GERD)?
A. Daily proton pump inhibitor (PPI) such as omeprazole
B. Continuous high-dose antacid suspension
C. Long-term systemic corticosteroid therapy
D. Broad-spectrum oral antibiotic regimen
CORRECT ANSWER: A. Daily proton pump inhibitor (PPI) such as omeprazole
Rationale: Proton pump inhibitors (PPIs) are the most potent and effective medications for healing erosive esophagitis and providing symptom relief in
chronic gastroesophageal reflux disease (GERD). They work by irreversibly inhibiting the H+/K+ ATPase pump in gastric parietal cells, significantly
reducing gastric acid secretion.
Question 14: A 52-year-old male with a history of heavy alcohol use is admitted to the hospital with acute, severe epigastric abdominal pain radiating
