NR 511 Differential Diagnosis and Primary Care:
Week 8 Cumulative Assessment Actual Exam –
Complete Questions and Answers with Detailed
Rationales – Pass Guaranteed – A+ Graded
Section 1: Reflecting on Clinical Reasoning & Diagnostic Process
Q1: What is the primary purpose of generating a broad differential diagnosis early in a
clinical encounter?
A. To avoid ordering any laboratory tests until the list is narrowed to one definitive
diagnosis
B. To ensure serious or life-threatening conditions are considered before settling on a
less severe explanation
C. To provide the patient with a comprehensive list of all possible diseases they might
have
D. To justify billing a higher complexity Evaluation and Management code for the visit
Correct Answer: B
Rationale: The best answer is B because generating a broad differential prevents
cognitive bias and ensures you don't miss "can't miss" or red flag diagnoses before
narrowing down to the most likely etiology.
Q2: Which USPSTF grade indicates that the service has moderate certainty of a
moderate net benefit, and the clinician should offer or provide this service?
A. Grade A
B. Grade B
C. Grade C
D. Grade D
Correct Answer: B
Rationale: This aligns with the clinical guideline that a Grade B recommendation means
there is high certainty that the net benefit is moderate, or moderate certainty that the net
benefit is moderate to substantial, warranting an offer of the service.
Q3: Which of the following best describes "anchoring bias" in clinical reasoning?
A. Dismissing a patient's symptoms because they have a history of somatization
B. Locking onto a specific diagnosis early in the encounter and failing to adjust as new
data emerges
, C. Favoring diagnostic tests that confirm your initial suspicions while ignoring conflicting
results
D. Attributing a patient's symptoms to a diagnosis you recently saw in another patient
Correct Answer: B
Rationale: Remember from week 8 that anchoring occurs when the clinician fixates on
an initial piece of information or diagnosis, which limits their ability to consider
alternative explanations even when the clinical picture evolves.
Q4: A 28-year-old active marathon runner presents with sharp, intermittent chest pain
that occurs only when running uphill. The NP assumes this is musculoskeletal
costochondritis and advises rest and NSAIDs without further workup. Two weeks later,
the patient collapses during a run and is diagnosed with hypertrophic cardiomyopathy.
What cognitive bias most likely occurred here?
A. Premature closure
B. Availability bias
C. Framing effect
D. Confirmation bias
Correct Answer: A
Rationale: This reflects the reflective practice principle that premature closure happens
when a provider accepts an initial diagnosis before fully ruling out life-threatening
conditions, missing the critical red flags of exertional chest pain in a young athlete.
Q5: A 65-year-old patient presents with a new complaint of lightheadedness when
standing up from a seated position. Vital signs are stable, and the physical exam is
unremarkable. What is the most appropriate next step in the diagnostic process?
A. Order a CT scan of the head to rule out a central nervous system lesion
B. Obtain orthostatic vital signs to assess for orthostatic hypotension
C. Refer the patient to a cardiologist for a comprehensive echocardiogram
D. Prescribe meclizine for presumed benign paroxysmal positional vertigo
Correct Answer: B
Rationale: In primary care, we prioritize targeted, low-cost diagnostic steps based on
the most probable hypothesis before moving to expensive or invasive testing, making
orthostatic vitals the clear first step here.
Q6: A 50-year-old patient presents with generalized fatigue. Based on the clinical
reasoning process, which of the following represents a primary hypothesis rather than a
"can't miss" diagnosis?
A. Iron deficiency anemia
B. Occult malignancy
C. Acute leukemia
D. Severe hypothyroidism with myxedema coma
Week 8 Cumulative Assessment Actual Exam –
Complete Questions and Answers with Detailed
Rationales – Pass Guaranteed – A+ Graded
Section 1: Reflecting on Clinical Reasoning & Diagnostic Process
Q1: What is the primary purpose of generating a broad differential diagnosis early in a
clinical encounter?
A. To avoid ordering any laboratory tests until the list is narrowed to one definitive
diagnosis
B. To ensure serious or life-threatening conditions are considered before settling on a
less severe explanation
C. To provide the patient with a comprehensive list of all possible diseases they might
have
D. To justify billing a higher complexity Evaluation and Management code for the visit
Correct Answer: B
Rationale: The best answer is B because generating a broad differential prevents
cognitive bias and ensures you don't miss "can't miss" or red flag diagnoses before
narrowing down to the most likely etiology.
Q2: Which USPSTF grade indicates that the service has moderate certainty of a
moderate net benefit, and the clinician should offer or provide this service?
A. Grade A
B. Grade B
C. Grade C
D. Grade D
Correct Answer: B
Rationale: This aligns with the clinical guideline that a Grade B recommendation means
there is high certainty that the net benefit is moderate, or moderate certainty that the net
benefit is moderate to substantial, warranting an offer of the service.
Q3: Which of the following best describes "anchoring bias" in clinical reasoning?
A. Dismissing a patient's symptoms because they have a history of somatization
B. Locking onto a specific diagnosis early in the encounter and failing to adjust as new
data emerges
, C. Favoring diagnostic tests that confirm your initial suspicions while ignoring conflicting
results
D. Attributing a patient's symptoms to a diagnosis you recently saw in another patient
Correct Answer: B
Rationale: Remember from week 8 that anchoring occurs when the clinician fixates on
an initial piece of information or diagnosis, which limits their ability to consider
alternative explanations even when the clinical picture evolves.
Q4: A 28-year-old active marathon runner presents with sharp, intermittent chest pain
that occurs only when running uphill. The NP assumes this is musculoskeletal
costochondritis and advises rest and NSAIDs without further workup. Two weeks later,
the patient collapses during a run and is diagnosed with hypertrophic cardiomyopathy.
What cognitive bias most likely occurred here?
A. Premature closure
B. Availability bias
C. Framing effect
D. Confirmation bias
Correct Answer: A
Rationale: This reflects the reflective practice principle that premature closure happens
when a provider accepts an initial diagnosis before fully ruling out life-threatening
conditions, missing the critical red flags of exertional chest pain in a young athlete.
Q5: A 65-year-old patient presents with a new complaint of lightheadedness when
standing up from a seated position. Vital signs are stable, and the physical exam is
unremarkable. What is the most appropriate next step in the diagnostic process?
A. Order a CT scan of the head to rule out a central nervous system lesion
B. Obtain orthostatic vital signs to assess for orthostatic hypotension
C. Refer the patient to a cardiologist for a comprehensive echocardiogram
D. Prescribe meclizine for presumed benign paroxysmal positional vertigo
Correct Answer: B
Rationale: In primary care, we prioritize targeted, low-cost diagnostic steps based on
the most probable hypothesis before moving to expensive or invasive testing, making
orthostatic vitals the clear first step here.
Q6: A 50-year-old patient presents with generalized fatigue. Based on the clinical
reasoning process, which of the following represents a primary hypothesis rather than a
"can't miss" diagnosis?
A. Iron deficiency anemia
B. Occult malignancy
C. Acute leukemia
D. Severe hypothyroidism with myxedema coma
