APEA 3P Exam | Comprehensive Study Guide,
Practice Exam, Exam Questions & Answers, Exam
Prep Test Bank, Advanced Pathophysiology,
Advanced Pharmacology, Advanced Physical
Assessment, Clinical Decision-Making, Differential
Diagnosis, Evidence-Based Practice, Detailed
Rationales, Nurse Practitioner Success Review
Question 1: A 68-year-old male with a 50-pack-year smoking history presents
with a new onset of hoarseness. Flexible laryngoscopy reveals a unilateral,
pale, sessile mass on the true vocal cord. Which of the following is the most
significant risk factor for malignant transformation of this lesion?
A. Chronic alcohol use
B. History of gastroesophageal reflux disease
C. Vocal cord paralysis
D. Lesion vascularity
CORRECT ANSWER: A. Chronic alcohol use
Rationale:The lesion described is suspicious for a vocal cord leukoplakia or carcinoma.
While tobacco is the primary irritant, chronic alcohol use acts synergistically with
tobacco to significantly increase the risk of malignant transformation in laryngeal
dysplasia. Reflux can cause inflammation, and paralysis suggests invasion, but alcohol is
the established synergistic co-factor.
Question 2: A 45-year-old female reports a 6-month history of progressive
fatigue, arthralgias, and a malar rash that spares the nasolabial folds.
Laboratory findings reveal anemia, leukopenia, and a positive antinuclear
antibody (ANA) test. Which of the following additional findings is most specific
for the diagnosis of systemic lupus erythematosus (SLE)?
A. Positive rheumatoid factor
B. Elevated erythrocyte sedimentation rate (ESR)
C. Anti-double-stranded DNA (anti-dsDNA) antibodies
D. Low complement C3 levels
CORRECT ANSWER: C. Anti-double-stranded DNA (anti-dsDNA) antibodies
Rationale:Anti-dsDNA antibodies are highly specific for SLE and are a criterion for
classification. While low complement and elevated ESR are common in SLE, they are
not specific. Rheumatoid factor is associated with rheumatoid arthritis and other
conditions, not SLE.
Question 3: A 72-year-old male with a history of hypertension and diabetes
presents with a sudden onset of severe, tearing chest pain that radiates to his
back. His blood pressure is 180/110 mmHg in the right arm and 130/80 mmHg
in the left arm. Which of the following is the most appropriate initial
diagnostic imaging study?
,A. Chest X-ray
B. Transthoracic echocardiogram
C. Computed tomography angiography (CTA)
D. Magnetic resonance imaging (MRI)
CORRECT ANSWER: C. Computed tomography angiography (CTA)
Rationale:The presentation is classic for an acute aortic dissection. CTA of the chest
and abdomen is the gold standard initial imaging modality due to its high sensitivity,
specificity, and rapid acquisition time. Chest X-ray is insensitive, and while
echocardiography is useful, CTA provides the definitive diagnosis and extent of the
dissection.
Question 4: A 30-year-old female with a history of migraines experiences a
sudden, severe "thunderclap" headache during exertion. A non-contrast head
CT is negative. Which of the following is the most appropriate next step in
diagnosis?
A. Discharge with triptan prescription
B. Lumbar puncture
C. Magnetic resonance venography (MRV)
D. Electroencephalogram (EEG)
CORRECT ANSWER: B. Lumbar puncture
Rationale:"Thunderclap" headache with a negative non-contrast CT is suspicious for
subarachnoid hemorrhage. A lumbar puncture is required to detect xanthochromia or
blood in the cerebrospinal fluid (CSF) if the CT is negative, especially if performed
within 6-12 hours of onset. MRV is for venous sinus thrombosis, and EEG is not
indicated.
Question 5: A 55-year-old male with cirrhosis is found to have ascites. A
paracentesis reveals a serum-ascites albumin gradient (SAAG) greater than 1.1
g/dL. Which of the following is the most likely etiology of his ascites?
A. Peritoneal carcinomatosis
B. Nephrotic syndrome
C. Portal hypertension
D. Tuberculous peritonitis
CORRECT ANSWER: C. Portal hypertension
Rationale:A high SAAG (>1.1) indicates portal hypertension, which is the primary
mechanism of ascites in cirrhosis. Low SAAG ascites is associated with peritoneal
disease, nephrotic syndrome, and tuberculosis.
Question 6: A 25-year-old male presents with acute onset of right lower
quadrant abdominal pain, nausea, and fever. On examination, he has rebound
tenderness at McBurney's point. Which of the following is the most
appropriate next step?
,A. Abdominal ultrasound
B. Computed tomography (CT) of the abdomen and pelvis with contrast
C. Diagnostic laparoscopy
D. Magnetic resonance imaging (MRI)
CORRECT ANSWER: B. Computed tomography (CT) of the abdomen and pelvis
with contrast
Rationale:While ultrasound is often used in children and pregnant women, CT with
contrast is the most sensitive and specific imaging modality for diagnosing acute
appendicitis in adults and is the standard of care for confirmation in this age group.
Question 7: A 60-year-old female with a history of chronic kidney disease
presents with severe, colicky flank pain radiating to the groin, accompanied by
hematuria. Which of the following is the most likely composition of her
urinary stone?
A. Uric acid
B. Calcium oxalate
C. Struvite
D. Cystine
CORRECT ANSWER: B. Calcium oxalate
Rationale:Calcium oxalate stones are the most common type of kidney stones,
accounting for approximately 80% of cases. The presentation of acute flank pain and
hematuria is classic for nephrolithiasis. Uric acid stones are radiolucent, struvite stones
are associated with infections, and cystine stones are rare and genetic.
Question 8: A 34-year-old female with a history of Graves' disease treated with
radioactive iodine presents with palpitations, heat intolerance, and a fine
tremor. Her TSH is <0.01 mIU/L and Free T4 is elevated. Which of the
following is the most appropriate initial treatment?
A. Propylthiouracil
B. Methimazole
C. Radioactive iodine ablation
D. Propranolol
CORRECT ANSWER: D. Propranolol
Rationale:The patient has recurrent hyperthyroidism. Beta-blockers like propranolol are
indicated for symptomatic relief of palpitations, tremor, and anxiety. Methimazole and
propylthiouracil are antithyroid drugs, but radioactive iodine is the definitive treatment.
Propranolol provides rapid symptom control while awaiting definitive therapy.
Question 9: A 48-year-old male presents with a painful, swollen right knee
following a fall. He has a history of gout. Joint aspiration reveals negatively
birefringent, needle-shaped crystals under polarized light. Which of the
following is the most appropriate acute treatment?
, A. Allopurinol
B. Colchicine
C. Febuxostat
D. Probenecid
CORRECT ANSWER: B. Colchicine
Rationale:The finding of negatively birefringent crystals is diagnostic of gout.
Colchicine and NSAIDs are first-line treatments for acute gout flares. Allopurinol and
febuxostat are urate-lowering therapies used for chronic management, not acute flares.
Probenecid is a uricosuric agent.
Question 10: A 70-year-old male presents with progressive urinary hesitancy,
nocturia, and a weak urinary stream. Digital rectal exam reveals a
symmetrically enlarged, firm, non-tender prostate. His PSA is 4.5 ng/mL.
Which of the following is the most likely diagnosis?
A. Benign prostatic hyperplasia (BPH)
B. Acute bacterial prostatitis
C. Prostate cancer
D. Urethral stricture
CORRECT ANSWER: A. Benign prostatic hyperplasia (BPH)
Rationale:The symptoms of hesitancy, nocturia, and weak stream, combined with a
symmetrical, firm, non-tender prostate on DRE, are classic for BPH. Prostate cancer
often presents with a hard, nodular, or asymmetrical prostate. Prostatitis is associated
with pain and fever.
Question 11: A 62-year-old female with a history of atrial fibrillation on
warfarin presents with a sudden onset of severe left-sided headache, nausea,
and vomiting. Neurological exam is non-focal. An emergent non-contrast CT of
the head shows a hyperdense crescent-shaped collection along the left cerebral
convexity. Which of the following is the most likely diagnosis?
A. Epidural hematoma
B. Subarachnoid hemorrhage
C. Subdural hematoma
D. Intraparenchymal hemorrhage
CORRECT ANSWER: C. Subdural hematoma
Rationale:The crescent-shaped collection is classic for a subdural hematoma. The
patient's anticoagulation use and age increase the risk. Epidural hematomas are lens-
shaped (biconvex) and often associated with a skull fracture. Subarachnoid hemorrhage
presents in the basal cisterns.
Question 12: A 28-year-old male presents with a 2-week history of high fever,
dry cough, and pleuritic chest pain. A chest X-ray shows a right lower lobe
infiltrate. He has a history of a positive PPD test but did not receive treatment.
Practice Exam, Exam Questions & Answers, Exam
Prep Test Bank, Advanced Pathophysiology,
Advanced Pharmacology, Advanced Physical
Assessment, Clinical Decision-Making, Differential
Diagnosis, Evidence-Based Practice, Detailed
Rationales, Nurse Practitioner Success Review
Question 1: A 68-year-old male with a 50-pack-year smoking history presents
with a new onset of hoarseness. Flexible laryngoscopy reveals a unilateral,
pale, sessile mass on the true vocal cord. Which of the following is the most
significant risk factor for malignant transformation of this lesion?
A. Chronic alcohol use
B. History of gastroesophageal reflux disease
C. Vocal cord paralysis
D. Lesion vascularity
CORRECT ANSWER: A. Chronic alcohol use
Rationale:The lesion described is suspicious for a vocal cord leukoplakia or carcinoma.
While tobacco is the primary irritant, chronic alcohol use acts synergistically with
tobacco to significantly increase the risk of malignant transformation in laryngeal
dysplasia. Reflux can cause inflammation, and paralysis suggests invasion, but alcohol is
the established synergistic co-factor.
Question 2: A 45-year-old female reports a 6-month history of progressive
fatigue, arthralgias, and a malar rash that spares the nasolabial folds.
Laboratory findings reveal anemia, leukopenia, and a positive antinuclear
antibody (ANA) test. Which of the following additional findings is most specific
for the diagnosis of systemic lupus erythematosus (SLE)?
A. Positive rheumatoid factor
B. Elevated erythrocyte sedimentation rate (ESR)
C. Anti-double-stranded DNA (anti-dsDNA) antibodies
D. Low complement C3 levels
CORRECT ANSWER: C. Anti-double-stranded DNA (anti-dsDNA) antibodies
Rationale:Anti-dsDNA antibodies are highly specific for SLE and are a criterion for
classification. While low complement and elevated ESR are common in SLE, they are
not specific. Rheumatoid factor is associated with rheumatoid arthritis and other
conditions, not SLE.
Question 3: A 72-year-old male with a history of hypertension and diabetes
presents with a sudden onset of severe, tearing chest pain that radiates to his
back. His blood pressure is 180/110 mmHg in the right arm and 130/80 mmHg
in the left arm. Which of the following is the most appropriate initial
diagnostic imaging study?
,A. Chest X-ray
B. Transthoracic echocardiogram
C. Computed tomography angiography (CTA)
D. Magnetic resonance imaging (MRI)
CORRECT ANSWER: C. Computed tomography angiography (CTA)
Rationale:The presentation is classic for an acute aortic dissection. CTA of the chest
and abdomen is the gold standard initial imaging modality due to its high sensitivity,
specificity, and rapid acquisition time. Chest X-ray is insensitive, and while
echocardiography is useful, CTA provides the definitive diagnosis and extent of the
dissection.
Question 4: A 30-year-old female with a history of migraines experiences a
sudden, severe "thunderclap" headache during exertion. A non-contrast head
CT is negative. Which of the following is the most appropriate next step in
diagnosis?
A. Discharge with triptan prescription
B. Lumbar puncture
C. Magnetic resonance venography (MRV)
D. Electroencephalogram (EEG)
CORRECT ANSWER: B. Lumbar puncture
Rationale:"Thunderclap" headache with a negative non-contrast CT is suspicious for
subarachnoid hemorrhage. A lumbar puncture is required to detect xanthochromia or
blood in the cerebrospinal fluid (CSF) if the CT is negative, especially if performed
within 6-12 hours of onset. MRV is for venous sinus thrombosis, and EEG is not
indicated.
Question 5: A 55-year-old male with cirrhosis is found to have ascites. A
paracentesis reveals a serum-ascites albumin gradient (SAAG) greater than 1.1
g/dL. Which of the following is the most likely etiology of his ascites?
A. Peritoneal carcinomatosis
B. Nephrotic syndrome
C. Portal hypertension
D. Tuberculous peritonitis
CORRECT ANSWER: C. Portal hypertension
Rationale:A high SAAG (>1.1) indicates portal hypertension, which is the primary
mechanism of ascites in cirrhosis. Low SAAG ascites is associated with peritoneal
disease, nephrotic syndrome, and tuberculosis.
Question 6: A 25-year-old male presents with acute onset of right lower
quadrant abdominal pain, nausea, and fever. On examination, he has rebound
tenderness at McBurney's point. Which of the following is the most
appropriate next step?
,A. Abdominal ultrasound
B. Computed tomography (CT) of the abdomen and pelvis with contrast
C. Diagnostic laparoscopy
D. Magnetic resonance imaging (MRI)
CORRECT ANSWER: B. Computed tomography (CT) of the abdomen and pelvis
with contrast
Rationale:While ultrasound is often used in children and pregnant women, CT with
contrast is the most sensitive and specific imaging modality for diagnosing acute
appendicitis in adults and is the standard of care for confirmation in this age group.
Question 7: A 60-year-old female with a history of chronic kidney disease
presents with severe, colicky flank pain radiating to the groin, accompanied by
hematuria. Which of the following is the most likely composition of her
urinary stone?
A. Uric acid
B. Calcium oxalate
C. Struvite
D. Cystine
CORRECT ANSWER: B. Calcium oxalate
Rationale:Calcium oxalate stones are the most common type of kidney stones,
accounting for approximately 80% of cases. The presentation of acute flank pain and
hematuria is classic for nephrolithiasis. Uric acid stones are radiolucent, struvite stones
are associated with infections, and cystine stones are rare and genetic.
Question 8: A 34-year-old female with a history of Graves' disease treated with
radioactive iodine presents with palpitations, heat intolerance, and a fine
tremor. Her TSH is <0.01 mIU/L and Free T4 is elevated. Which of the
following is the most appropriate initial treatment?
A. Propylthiouracil
B. Methimazole
C. Radioactive iodine ablation
D. Propranolol
CORRECT ANSWER: D. Propranolol
Rationale:The patient has recurrent hyperthyroidism. Beta-blockers like propranolol are
indicated for symptomatic relief of palpitations, tremor, and anxiety. Methimazole and
propylthiouracil are antithyroid drugs, but radioactive iodine is the definitive treatment.
Propranolol provides rapid symptom control while awaiting definitive therapy.
Question 9: A 48-year-old male presents with a painful, swollen right knee
following a fall. He has a history of gout. Joint aspiration reveals negatively
birefringent, needle-shaped crystals under polarized light. Which of the
following is the most appropriate acute treatment?
, A. Allopurinol
B. Colchicine
C. Febuxostat
D. Probenecid
CORRECT ANSWER: B. Colchicine
Rationale:The finding of negatively birefringent crystals is diagnostic of gout.
Colchicine and NSAIDs are first-line treatments for acute gout flares. Allopurinol and
febuxostat are urate-lowering therapies used for chronic management, not acute flares.
Probenecid is a uricosuric agent.
Question 10: A 70-year-old male presents with progressive urinary hesitancy,
nocturia, and a weak urinary stream. Digital rectal exam reveals a
symmetrically enlarged, firm, non-tender prostate. His PSA is 4.5 ng/mL.
Which of the following is the most likely diagnosis?
A. Benign prostatic hyperplasia (BPH)
B. Acute bacterial prostatitis
C. Prostate cancer
D. Urethral stricture
CORRECT ANSWER: A. Benign prostatic hyperplasia (BPH)
Rationale:The symptoms of hesitancy, nocturia, and weak stream, combined with a
symmetrical, firm, non-tender prostate on DRE, are classic for BPH. Prostate cancer
often presents with a hard, nodular, or asymmetrical prostate. Prostatitis is associated
with pain and fever.
Question 11: A 62-year-old female with a history of atrial fibrillation on
warfarin presents with a sudden onset of severe left-sided headache, nausea,
and vomiting. Neurological exam is non-focal. An emergent non-contrast CT of
the head shows a hyperdense crescent-shaped collection along the left cerebral
convexity. Which of the following is the most likely diagnosis?
A. Epidural hematoma
B. Subarachnoid hemorrhage
C. Subdural hematoma
D. Intraparenchymal hemorrhage
CORRECT ANSWER: C. Subdural hematoma
Rationale:The crescent-shaped collection is classic for a subdural hematoma. The
patient's anticoagulation use and age increase the risk. Epidural hematomas are lens-
shaped (biconvex) and often associated with a skull fracture. Subarachnoid hemorrhage
presents in the basal cisterns.
Question 12: A 28-year-old male presents with a 2-week history of high fever,
dry cough, and pleuritic chest pain. A chest X-ray shows a right lower lobe
infiltrate. He has a history of a positive PPD test but did not receive treatment.
