NR-511 DIFFERENTIAL DIAGNOSIS EXAM 3 QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES
2026 Q&A |LATEST EXAM UPDATE 2026/2027 CHAMBERLAIN UNIVERSITY..
*Core Domains*
*Abdominal Pain and Gastrointestinal Disorders*
*Neurological Assessment and Headache*
*Cardiovascular Diagnostic Reasoning*
*Dermatological Differential Diagnosis*
*Respiratory System Evaluations*
*Musculoskeletal Injury Assessment*
*Psychiatric Screening in Primary Care*
*Endocrine and Metabolic Disorders*
*Introduction*
*The purpose of this examination is to evaluate clinical competency in diagnostic reasoning within a primary care setting. This ass
SECTION ONE: QUESTIONS 1–100
A 45-year-old female presents with recurrent right upper quadrant pain, nausea, and fatty food intolerance. Which diagnostic test is the
gold standard for confirming cholecystitis?
A. Abdominal X-ray
B. HIDA scan
C. Ultrasound of the gallbladder
D. CT scan of the abdomen
🟢C
🔴 RATIONALE: Ultrasound of the gallbladder is the initial and preferred diagnostic imaging modality for evaluating cholecystitis due to
its high sensitivity and specificity for gallstones.
A patient reports sudden onset of "the worst headache of my life." What is the most appropriate immediate action?
A. Administer NSAIDs
B. Schedule an urgent MRI
C. Perform a CT scan of the head without contrast
,D. Order a lumbar puncture
🟢C
🔴 RATIONALE: A thunderclap headache is a classic presentation for a subarachnoid hemorrhage, making a non-contrast CT head
the urgent priority to rule out intracranial bleeding.
Which of the following findings is most concerning for secondary hypertension in a 25-year-old patient?
A. BMI of 30
B. Reports of heavy alcohol consumption
C. Bruit heard over the renal artery
D. Family history of essential hypertension
🟢C
🔴 RATIONALE: A renal artery bruit is a clinical indicator of renal artery stenosis, a common cause of secondary hypertension in
younger patients.
A 60-year-old male with a history of COPD presents with increased dyspnea and purulent sputum. What is the most likely pathogen?
A. Streptococcus pneumoniae
B. Mycoplasma pneumoniae
C. Pseudomonas aeruginosa
D. Moraxella catarrhalis
🟢A
🔴 RATIONALE: Streptococcus pneumoniae is the most common bacterial pathogen responsible for acute exacerbations of COPD.
When assessing a patient for suspected temporal arteritis, what is the most critical complication to prevent?
A. Chronic headache
B. Permanent vision loss
C. Temporal artery rupture
D. Stroke
🟢B
🔴 RATIONALE: Giant cell (temporal) arteritis poses an immediate risk of irreversible blindness due to ischemic optic neuropathy;
high-dose steroids are required urgently.
A patient presents with a butterfly-shaped erythematous rash on the face that spares the nasolabial folds. What is the most likely
diagnosis?
A. Rosacea
B. Seborrheic dermatitis
C. Systemic Lupus Erythematosus (SLE)
, D. Tinea faciei
🟢C
🔴 RATIONALE: The malar rash, or "butterfly rash," is a hallmark clinical sign of SLE and typically spares the nasolabial folds.
Which of the following lab values would be expected in a patient with primary hypothyroidism?
A. High TSH, Low Free T4
B. Low TSH, High Free T4
C. High TSH, High Free T4
D. Low TSH, Low Free T4
🟢A
🔴 RATIONALE: In primary hypothyroidism, the thyroid gland fails to produce adequate T4, leading the pituitary to increase TSH
secretion via negative feedback.
A 30-year-old female presents with diffuse goiter, palpitations, and weight loss. Which initial test is indicated?
A. Thyroid ultrasound
B. Fine needle aspiration
C. TSH and Free T4
D. Radioactive iodine uptake scan
🟢C
🔴 RATIONALE: The initial assessment for suspected hyperthyroidism is measuring TSH and T4 levels to determine the functional
status of the thyroid gland.
When treating a patient for depression, what is the required time frame before determining if an SSRI is effective?
A. 1–2 weeks
B. 4–6 weeks
C. 2–3 months
D. 6 months
🟢B
🔴 RATIONALE: SSRIs typically require a minimum of 4 to 6 weeks of consistent therapeutic dosing to demonstrate clinical
improvement in depressive symptoms.
A patient with asthma is using their rescue inhaler 4 times per week and waking up with symptoms twice per month. How is this
classified?
A. Intermittent
B. Mild persistent
C. Moderate persistent
2026 Q&A |LATEST EXAM UPDATE 2026/2027 CHAMBERLAIN UNIVERSITY..
*Core Domains*
*Abdominal Pain and Gastrointestinal Disorders*
*Neurological Assessment and Headache*
*Cardiovascular Diagnostic Reasoning*
*Dermatological Differential Diagnosis*
*Respiratory System Evaluations*
*Musculoskeletal Injury Assessment*
*Psychiatric Screening in Primary Care*
*Endocrine and Metabolic Disorders*
*Introduction*
*The purpose of this examination is to evaluate clinical competency in diagnostic reasoning within a primary care setting. This ass
SECTION ONE: QUESTIONS 1–100
A 45-year-old female presents with recurrent right upper quadrant pain, nausea, and fatty food intolerance. Which diagnostic test is the
gold standard for confirming cholecystitis?
A. Abdominal X-ray
B. HIDA scan
C. Ultrasound of the gallbladder
D. CT scan of the abdomen
🟢C
🔴 RATIONALE: Ultrasound of the gallbladder is the initial and preferred diagnostic imaging modality for evaluating cholecystitis due to
its high sensitivity and specificity for gallstones.
A patient reports sudden onset of "the worst headache of my life." What is the most appropriate immediate action?
A. Administer NSAIDs
B. Schedule an urgent MRI
C. Perform a CT scan of the head without contrast
,D. Order a lumbar puncture
🟢C
🔴 RATIONALE: A thunderclap headache is a classic presentation for a subarachnoid hemorrhage, making a non-contrast CT head
the urgent priority to rule out intracranial bleeding.
Which of the following findings is most concerning for secondary hypertension in a 25-year-old patient?
A. BMI of 30
B. Reports of heavy alcohol consumption
C. Bruit heard over the renal artery
D. Family history of essential hypertension
🟢C
🔴 RATIONALE: A renal artery bruit is a clinical indicator of renal artery stenosis, a common cause of secondary hypertension in
younger patients.
A 60-year-old male with a history of COPD presents with increased dyspnea and purulent sputum. What is the most likely pathogen?
A. Streptococcus pneumoniae
B. Mycoplasma pneumoniae
C. Pseudomonas aeruginosa
D. Moraxella catarrhalis
🟢A
🔴 RATIONALE: Streptococcus pneumoniae is the most common bacterial pathogen responsible for acute exacerbations of COPD.
When assessing a patient for suspected temporal arteritis, what is the most critical complication to prevent?
A. Chronic headache
B. Permanent vision loss
C. Temporal artery rupture
D. Stroke
🟢B
🔴 RATIONALE: Giant cell (temporal) arteritis poses an immediate risk of irreversible blindness due to ischemic optic neuropathy;
high-dose steroids are required urgently.
A patient presents with a butterfly-shaped erythematous rash on the face that spares the nasolabial folds. What is the most likely
diagnosis?
A. Rosacea
B. Seborrheic dermatitis
C. Systemic Lupus Erythematosus (SLE)
, D. Tinea faciei
🟢C
🔴 RATIONALE: The malar rash, or "butterfly rash," is a hallmark clinical sign of SLE and typically spares the nasolabial folds.
Which of the following lab values would be expected in a patient with primary hypothyroidism?
A. High TSH, Low Free T4
B. Low TSH, High Free T4
C. High TSH, High Free T4
D. Low TSH, Low Free T4
🟢A
🔴 RATIONALE: In primary hypothyroidism, the thyroid gland fails to produce adequate T4, leading the pituitary to increase TSH
secretion via negative feedback.
A 30-year-old female presents with diffuse goiter, palpitations, and weight loss. Which initial test is indicated?
A. Thyroid ultrasound
B. Fine needle aspiration
C. TSH and Free T4
D. Radioactive iodine uptake scan
🟢C
🔴 RATIONALE: The initial assessment for suspected hyperthyroidism is measuring TSH and T4 levels to determine the functional
status of the thyroid gland.
When treating a patient for depression, what is the required time frame before determining if an SSRI is effective?
A. 1–2 weeks
B. 4–6 weeks
C. 2–3 months
D. 6 months
🟢B
🔴 RATIONALE: SSRIs typically require a minimum of 4 to 6 weeks of consistent therapeutic dosing to demonstrate clinical
improvement in depressive symptoms.
A patient with asthma is using their rescue inhaler 4 times per week and waking up with symptoms twice per month. How is this
classified?
A. Intermittent
B. Mild persistent
C. Moderate persistent
