CHAMBERLAIN UNIVERSITY – NR511
DIFFERENTIAL DIAGNOSIS AND PRIMARY CARE
PRACTICUM WEEK 4 MIDTERMORIGINAL
PRACTICE QUESTIONS & ANSWERS | 2026/2027
LATEST UPDATE
SECTION 1: DIAGNOSTIC REASONING AND DIFFERENTIAL DIAGNOSIS
Questions 1–20
1. Which process best characterizes diagnostic reasoning in primary care?
A) Integrating clinical information, generating hypotheses, testing them, and
continually reassessing the differential diagnosis
B) Selecting the most common diagnosis before obtaining a history
C) Ordering every available diagnostic test before considering possible diagnoses
D) Treating the presenting symptom without determining its underlying cause
Correct Answer: Integrating clinical information, generating hypotheses, testing them, and
continually reassessing the differential diagnosis
Rationale: Diagnostic reasoning is an iterative cognitive process rather than a single
decision. The clinician gathers subjective and objective information, develops diagnostic
hypotheses, evaluates their probability, and modifies the differential as additional
information becomes available. This approach helps reduce premature closure and supports
safer, evidence-based clinical decision making.
2. During an initial history, which approach is most useful for obtaining the patient's
complete description of the chief concern?
A) Immediately asking only yes-or-no questions
B) Beginning with an open-ended question and then using focused questions
C) Asking about medications before allowing the patient to describe the problem
D) Limiting the history to the symptom that seems most likely to indicate the diagnosis
Correct Answer: Beginning with an open-ended question and then using focused questions
Rationale: Open-ended questioning allows the patient to describe the problem in their own
words and can reveal information the clinician did not anticipate. Focused questions can then
,clarify timing, characteristics, associated symptoms, and risk factors. Starting with narrowly
focused questions may prematurely constrain the diagnostic possibilities.
3. What is the primary purpose of developing a differential diagnosis?
A) To establish certainty before the physical examination
B) To determine which medication should be prescribed first
C) To identify plausible diagnoses that could explain the patient's findings
D) To eliminate the need for diagnostic testing
Correct Answer: To identify plausible diagnoses that could explain the patient's findings
Rationale: A differential diagnosis represents the clinically plausible explanations for the
patient's presentation. It guides further questioning, examination, and testing. The list should
be refined as evidence accumulates rather than being treated as fixed. Diagnostic testing is
selected strategically to distinguish among the leading possibilities.
4. A clinician deliberately asks, “What important diagnosis could I be overlooking?” This
behavior primarily demonstrates which reasoning strategy?
A) Anchoring
B) Premature closure
C) Availability bias
D) Reflective diagnostic reasoning
Correct Answer: Reflective diagnostic reasoning
Rationale: Reflective reasoning requires clinicians to examine their own assumptions and
consider whether relevant alternatives have been overlooked. Asking what could have been
missed can reduce premature closure. Anchoring, by contrast, occurs when the clinician
becomes overly committed to an initial impression despite information that should prompt
reconsideration.
5. Which characteristic of a diagnostic test describes its ability to correctly identify
people who have a disease?
A) Sensitivity
B) Specificity
C) Positive predictive value
D) Negative predictive value
Correct Answer: Sensitivity
,Rationale: Sensitivity is the proportion of people with the disease who have a positive test
result. A highly sensitive test produces relatively few false-negative results. Specificity
describes correct identification of people without the disease. Predictive values instead
describe the probability of disease given the test result and are influenced by disease
prevalence.
6. A test has high specificity. Which interpretation is most appropriate?
A) A negative result reliably confirms disease
B) A positive result is useful for ruling in disease
C) The test will detect nearly every person who has disease
D) The result is unaffected by disease prevalence
Correct Answer: A positive result is useful for ruling in disease
Rationale: Highly specific tests have few false-positive results. Therefore, a positive result is
relatively strong evidence that the disease is present. Sensitivity is more closely associated
with minimizing false negatives. Predictive values depend on prevalence, so specificity does
not mean that test interpretation is completely independent of the population being
evaluated.
7. Which component of the clinical history is particularly valuable for identifying
hereditary disease risks?
A) Review of systems
B) Family history
C) Social history
D) Medication reconciliation
Correct Answer: Family history
Rationale: Family history identifies illnesses occurring among biologically related relatives
and can reveal inherited or familial disease patterns. Social history instead focuses on factors
such as occupation, tobacco exposure, alcohol use, and living circumstances. Medication
reconciliation determines current medication exposure and potential adverse effects or
interactions.
8. A clinician initially suspects allergic rhinitis but later identifies unilateral nasal
obstruction with recurrent epistaxis. What is the best reasoning response?
A) Continue treating allergic rhinitis without modification
B) Ignore the new information because the original diagnosis was already established
C) Reassess the differential diagnosis based on the new findings
, D) Assume that two unrelated conditions are definitely present
Correct Answer: Reassess the differential diagnosis based on the new findings
Rationale: Diagnostic reasoning should remain flexible when new findings do not fit the
initial hypothesis. Unilateral obstruction and recurrent bleeding can require consideration of
structural or other causes beyond uncomplicated allergic rhinitis. The clinician should
reassess the history, examination, risk factors, and appropriate diagnostic evaluation.
9. Which type of data is obtained directly from the patient's description of symptoms?
A) Subjective data
B) Objective data
C) Laboratory data
D) Diagnostic imaging data
Correct Answer: Subjective data
Rationale: Subjective data include information reported by the patient, such as pain, nausea,
dizziness, and perceived changes in function. Objective data are observable or measurable
findings obtained through examination, vital signs, laboratory studies, or imaging. Both
types are necessary for constructing an accurate clinical assessment.
10. In a SOAP note, where should the clinician document the working diagnosis and
differential diagnoses?
A) Subjective
B) Objective
C) Assessment
D) Plan
Correct Answer: Assessment
Rationale: The assessment section synthesizes the subjective and objective findings into
clinical impressions. It can include the working diagnosis, differential diagnoses, and
reasoning supporting those conclusions. The plan describes interventions, testing, treatment,
education, follow-up, and referrals based on the assessment.
11. Which finding most strongly argues against premature closure?
A) Ordering a test solely because it was requested by the patient
B) Revisiting the differential when new findings conflict with the original hypothesis
C) Choosing the first diagnosis that explains one symptom
D) Avoiding alternative diagnoses after identifying a likely condition
DIFFERENTIAL DIAGNOSIS AND PRIMARY CARE
PRACTICUM WEEK 4 MIDTERMORIGINAL
PRACTICE QUESTIONS & ANSWERS | 2026/2027
LATEST UPDATE
SECTION 1: DIAGNOSTIC REASONING AND DIFFERENTIAL DIAGNOSIS
Questions 1–20
1. Which process best characterizes diagnostic reasoning in primary care?
A) Integrating clinical information, generating hypotheses, testing them, and
continually reassessing the differential diagnosis
B) Selecting the most common diagnosis before obtaining a history
C) Ordering every available diagnostic test before considering possible diagnoses
D) Treating the presenting symptom without determining its underlying cause
Correct Answer: Integrating clinical information, generating hypotheses, testing them, and
continually reassessing the differential diagnosis
Rationale: Diagnostic reasoning is an iterative cognitive process rather than a single
decision. The clinician gathers subjective and objective information, develops diagnostic
hypotheses, evaluates their probability, and modifies the differential as additional
information becomes available. This approach helps reduce premature closure and supports
safer, evidence-based clinical decision making.
2. During an initial history, which approach is most useful for obtaining the patient's
complete description of the chief concern?
A) Immediately asking only yes-or-no questions
B) Beginning with an open-ended question and then using focused questions
C) Asking about medications before allowing the patient to describe the problem
D) Limiting the history to the symptom that seems most likely to indicate the diagnosis
Correct Answer: Beginning with an open-ended question and then using focused questions
Rationale: Open-ended questioning allows the patient to describe the problem in their own
words and can reveal information the clinician did not anticipate. Focused questions can then
,clarify timing, characteristics, associated symptoms, and risk factors. Starting with narrowly
focused questions may prematurely constrain the diagnostic possibilities.
3. What is the primary purpose of developing a differential diagnosis?
A) To establish certainty before the physical examination
B) To determine which medication should be prescribed first
C) To identify plausible diagnoses that could explain the patient's findings
D) To eliminate the need for diagnostic testing
Correct Answer: To identify plausible diagnoses that could explain the patient's findings
Rationale: A differential diagnosis represents the clinically plausible explanations for the
patient's presentation. It guides further questioning, examination, and testing. The list should
be refined as evidence accumulates rather than being treated as fixed. Diagnostic testing is
selected strategically to distinguish among the leading possibilities.
4. A clinician deliberately asks, “What important diagnosis could I be overlooking?” This
behavior primarily demonstrates which reasoning strategy?
A) Anchoring
B) Premature closure
C) Availability bias
D) Reflective diagnostic reasoning
Correct Answer: Reflective diagnostic reasoning
Rationale: Reflective reasoning requires clinicians to examine their own assumptions and
consider whether relevant alternatives have been overlooked. Asking what could have been
missed can reduce premature closure. Anchoring, by contrast, occurs when the clinician
becomes overly committed to an initial impression despite information that should prompt
reconsideration.
5. Which characteristic of a diagnostic test describes its ability to correctly identify
people who have a disease?
A) Sensitivity
B) Specificity
C) Positive predictive value
D) Negative predictive value
Correct Answer: Sensitivity
,Rationale: Sensitivity is the proportion of people with the disease who have a positive test
result. A highly sensitive test produces relatively few false-negative results. Specificity
describes correct identification of people without the disease. Predictive values instead
describe the probability of disease given the test result and are influenced by disease
prevalence.
6. A test has high specificity. Which interpretation is most appropriate?
A) A negative result reliably confirms disease
B) A positive result is useful for ruling in disease
C) The test will detect nearly every person who has disease
D) The result is unaffected by disease prevalence
Correct Answer: A positive result is useful for ruling in disease
Rationale: Highly specific tests have few false-positive results. Therefore, a positive result is
relatively strong evidence that the disease is present. Sensitivity is more closely associated
with minimizing false negatives. Predictive values depend on prevalence, so specificity does
not mean that test interpretation is completely independent of the population being
evaluated.
7. Which component of the clinical history is particularly valuable for identifying
hereditary disease risks?
A) Review of systems
B) Family history
C) Social history
D) Medication reconciliation
Correct Answer: Family history
Rationale: Family history identifies illnesses occurring among biologically related relatives
and can reveal inherited or familial disease patterns. Social history instead focuses on factors
such as occupation, tobacco exposure, alcohol use, and living circumstances. Medication
reconciliation determines current medication exposure and potential adverse effects or
interactions.
8. A clinician initially suspects allergic rhinitis but later identifies unilateral nasal
obstruction with recurrent epistaxis. What is the best reasoning response?
A) Continue treating allergic rhinitis without modification
B) Ignore the new information because the original diagnosis was already established
C) Reassess the differential diagnosis based on the new findings
, D) Assume that two unrelated conditions are definitely present
Correct Answer: Reassess the differential diagnosis based on the new findings
Rationale: Diagnostic reasoning should remain flexible when new findings do not fit the
initial hypothesis. Unilateral obstruction and recurrent bleeding can require consideration of
structural or other causes beyond uncomplicated allergic rhinitis. The clinician should
reassess the history, examination, risk factors, and appropriate diagnostic evaluation.
9. Which type of data is obtained directly from the patient's description of symptoms?
A) Subjective data
B) Objective data
C) Laboratory data
D) Diagnostic imaging data
Correct Answer: Subjective data
Rationale: Subjective data include information reported by the patient, such as pain, nausea,
dizziness, and perceived changes in function. Objective data are observable or measurable
findings obtained through examination, vital signs, laboratory studies, or imaging. Both
types are necessary for constructing an accurate clinical assessment.
10. In a SOAP note, where should the clinician document the working diagnosis and
differential diagnoses?
A) Subjective
B) Objective
C) Assessment
D) Plan
Correct Answer: Assessment
Rationale: The assessment section synthesizes the subjective and objective findings into
clinical impressions. It can include the working diagnosis, differential diagnoses, and
reasoning supporting those conclusions. The plan describes interventions, testing, treatment,
education, follow-up, and referrals based on the assessment.
11. Which finding most strongly argues against premature closure?
A) Ordering a test solely because it was requested by the patient
B) Revisiting the differential when new findings conflict with the original hypothesis
C) Choosing the first diagnosis that explains one symptom
D) Avoiding alternative diagnoses after identifying a likely condition
