2026 BARKLEY 3P EXAM AND PRACTICE EXAM Questions with Correct
Answers & Rationales Updated for Verified A+ Content
Question 1
A 62-year-old male with a history of chronic alcoholism presents with confusion, ataxia,
and ophthalmoplegia. Which of the following vitamin deficiencies is most likely
responsible for this presentation?
A) Vitamin B12 deficiency
B) Thiamine (Vitamin B1) deficiency
C) Vitamin D deficiency
D) Folate deficiency
Rationale: Wernicke-Korsakoff syndrome is caused by thiamine (vitamin B1) deficiency,
commonly seen in chronic alcoholics. The classic triad includes confusion, ataxia (gait
disturbance), and ophthalmoplegia (eye movement abnormalities). Prompt thiamine
replacement is essential to prevent permanent neurological damage.
Question 2
A 55-year-old female presents with progressive dyspnea and a dry cough. Chest X-ray
shows bilateral interstitial infiltrates and honeycombing. Which of the following is the
most likely diagnosis?
A) Idiopathic pulmonary fibrosis (IPF)
B) Sarcoidosis
C) Asbestosis
D) Hypersensitivity pneumonitis
Rationale: Idiopathic pulmonary fibrosis (IPF) presents with progressive dyspnea, dry
cough, and imaging findings of bilateral interstitial infiltrates with honeycombing,
especially in the basilar and peripheral regions. It is a restrictive lung disease with poor
prognosis. Sarcoidosis typically presents with bilateral hilar adenopathy.
,Question 3
A 40-year-old female presents with fatigue, joint pain, and a butterfly-shaped rash on
her face. Laboratory findings show positive ANA, anti-dsDNA, and low C3/C4
complement levels. Which of the following is the most likely renal complication?
A) Lupus nephritis (Class IV)
B) Membranous nephropathy
C) IgA nephropathy
D) Rapidly progressive glomerulonephritis
Rationale: Lupus nephritis, particularly Class IV (diffuse proliferative), is the most severe
renal complication of SLE. It presents with proteinuria, hematuria, and hypertension. Low
complement levels and anti-dsDNA antibodies correlate with disease activity. Prompt
treatment with immunosuppressants is required.
Question 4
A patient with a history of myocardial infarction develops a new systolic murmur heard
best at the apex with radiation to the axilla. Which of the following is the most likely
diagnosis?
A) Mitral regurgitation (papillary muscle dysfunction)
B) Ventricular septal defect
C) Aortic stenosis
D) Tricuspid regurgitation
Rationale: Papillary muscle dysfunction following MI can cause mitral regurgitation,
presenting as a new systolic murmur at the apex radiating to the axilla. This is a serious
complication that can lead to acute heart failure. Ventricular septal defect is a holosystolic
murmur at the left sternal border.
,Question 5
A 28-year-old male presents with sudden onset of scrotal pain, nausea, and vomiting.
On examination, the right testis is high-riding and tender with an absent cremasteric
reflex. Which of the following is the most appropriate next step?
A) Emergency surgical consultation (testicular torsion)
B) Ultrasound of the scrotum
C) Antibiotics for epididymitis
D) CT scan of the abdomen
Rationale: Testicular torsion is a surgical emergency requiring immediate consultation.
The absence of the cremasteric reflex is a highly sensitive finding. Surgical detorsion must
be performed within 4-6 hours to salvage the testicle. Ultrasound should not delay surgical
consultation.
Question 6
A 45-year-old female with a history of breast cancer presents with headache, nausea,
and diplopia. She is currently on tamoxifen. Which of the following is the most likely
cause of her symptoms?
A) Brain metastasis
B) Medication side effect
C) Migraine headache
D) Sinusitis
Rationale: Breast cancer commonly metastasizes to the brain. New-onset headache,
nausea, vomiting, and diplopia in a patient with breast cancer should raise suspicion for
brain metastasis. Tamoxifen does not typically cause these symptoms. Imaging (MRI brain)
is indicated.
, Question 7
A newborn is noted to have a cleft lip and palate. Which of the following is the most
likely underlying mechanism?
A) Failure of fusion of the medial nasal and maxillary processes
B) Failure of fusion of the lateral palatine processes
C) Neural tube defect
D) Chromosomal abnormality
Rationale: Cleft lip results from failure of fusion of the medial nasal process with the
maxillary process. Cleft palate results from failure of fusion of the palatal shelves. The
condition may be genetic or environmental and is often associated with syndromes.
Question 8
A 70-year-old male presents with progressive difficulty swallowing, weight loss, and
hoarseness. Which of the following is the most likely diagnosis?
A) Esophageal cancer
B) GERD
C) Achalasia
D) Peptic stricture
Rationale: Progressive dysphagia (initially solids, then liquids) with weight loss is
characteristic of esophageal cancer. Hoarseness indicates recurrent laryngeal nerve
involvement. GERD and peptic stricture typically present with intermittent symptoms, not
progressive weight loss.
Question 9
A patient with a history of hypertension presents with sudden onset of severe tearing
chest pain radiating to the back. Which of the following is the most likely diagnosis?
Answers & Rationales Updated for Verified A+ Content
Question 1
A 62-year-old male with a history of chronic alcoholism presents with confusion, ataxia,
and ophthalmoplegia. Which of the following vitamin deficiencies is most likely
responsible for this presentation?
A) Vitamin B12 deficiency
B) Thiamine (Vitamin B1) deficiency
C) Vitamin D deficiency
D) Folate deficiency
Rationale: Wernicke-Korsakoff syndrome is caused by thiamine (vitamin B1) deficiency,
commonly seen in chronic alcoholics. The classic triad includes confusion, ataxia (gait
disturbance), and ophthalmoplegia (eye movement abnormalities). Prompt thiamine
replacement is essential to prevent permanent neurological damage.
Question 2
A 55-year-old female presents with progressive dyspnea and a dry cough. Chest X-ray
shows bilateral interstitial infiltrates and honeycombing. Which of the following is the
most likely diagnosis?
A) Idiopathic pulmonary fibrosis (IPF)
B) Sarcoidosis
C) Asbestosis
D) Hypersensitivity pneumonitis
Rationale: Idiopathic pulmonary fibrosis (IPF) presents with progressive dyspnea, dry
cough, and imaging findings of bilateral interstitial infiltrates with honeycombing,
especially in the basilar and peripheral regions. It is a restrictive lung disease with poor
prognosis. Sarcoidosis typically presents with bilateral hilar adenopathy.
,Question 3
A 40-year-old female presents with fatigue, joint pain, and a butterfly-shaped rash on
her face. Laboratory findings show positive ANA, anti-dsDNA, and low C3/C4
complement levels. Which of the following is the most likely renal complication?
A) Lupus nephritis (Class IV)
B) Membranous nephropathy
C) IgA nephropathy
D) Rapidly progressive glomerulonephritis
Rationale: Lupus nephritis, particularly Class IV (diffuse proliferative), is the most severe
renal complication of SLE. It presents with proteinuria, hematuria, and hypertension. Low
complement levels and anti-dsDNA antibodies correlate with disease activity. Prompt
treatment with immunosuppressants is required.
Question 4
A patient with a history of myocardial infarction develops a new systolic murmur heard
best at the apex with radiation to the axilla. Which of the following is the most likely
diagnosis?
A) Mitral regurgitation (papillary muscle dysfunction)
B) Ventricular septal defect
C) Aortic stenosis
D) Tricuspid regurgitation
Rationale: Papillary muscle dysfunction following MI can cause mitral regurgitation,
presenting as a new systolic murmur at the apex radiating to the axilla. This is a serious
complication that can lead to acute heart failure. Ventricular septal defect is a holosystolic
murmur at the left sternal border.
,Question 5
A 28-year-old male presents with sudden onset of scrotal pain, nausea, and vomiting.
On examination, the right testis is high-riding and tender with an absent cremasteric
reflex. Which of the following is the most appropriate next step?
A) Emergency surgical consultation (testicular torsion)
B) Ultrasound of the scrotum
C) Antibiotics for epididymitis
D) CT scan of the abdomen
Rationale: Testicular torsion is a surgical emergency requiring immediate consultation.
The absence of the cremasteric reflex is a highly sensitive finding. Surgical detorsion must
be performed within 4-6 hours to salvage the testicle. Ultrasound should not delay surgical
consultation.
Question 6
A 45-year-old female with a history of breast cancer presents with headache, nausea,
and diplopia. She is currently on tamoxifen. Which of the following is the most likely
cause of her symptoms?
A) Brain metastasis
B) Medication side effect
C) Migraine headache
D) Sinusitis
Rationale: Breast cancer commonly metastasizes to the brain. New-onset headache,
nausea, vomiting, and diplopia in a patient with breast cancer should raise suspicion for
brain metastasis. Tamoxifen does not typically cause these symptoms. Imaging (MRI brain)
is indicated.
, Question 7
A newborn is noted to have a cleft lip and palate. Which of the following is the most
likely underlying mechanism?
A) Failure of fusion of the medial nasal and maxillary processes
B) Failure of fusion of the lateral palatine processes
C) Neural tube defect
D) Chromosomal abnormality
Rationale: Cleft lip results from failure of fusion of the medial nasal process with the
maxillary process. Cleft palate results from failure of fusion of the palatal shelves. The
condition may be genetic or environmental and is often associated with syndromes.
Question 8
A 70-year-old male presents with progressive difficulty swallowing, weight loss, and
hoarseness. Which of the following is the most likely diagnosis?
A) Esophageal cancer
B) GERD
C) Achalasia
D) Peptic stricture
Rationale: Progressive dysphagia (initially solids, then liquids) with weight loss is
characteristic of esophageal cancer. Hoarseness indicates recurrent laryngeal nerve
involvement. GERD and peptic stricture typically present with intermittent symptoms, not
progressive weight loss.
Question 9
A patient with a history of hypertension presents with sudden onset of severe tearing
chest pain radiating to the back. Which of the following is the most likely diagnosis?
