NR511 CEA MIDTERM EXAM DIFFERENTIAL
DIAGNOSIS & PRIMARY CARE PRACTICUM
QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES
2026 Q&A | INSTANT DOWNLOAD PDF.
Core Domains
• Diagnostic Reasoning and Clinical Decision-Making: Hypothesis
generation, Bayesian reasoning, likelihood ratios, cognitive biases,
SNAPPS model
• Evidence-Based Practice and Clinical Guidelines: Research evidence
hierarchy, clinical practice guidelines, preventive care, quality
improvement
• Health History and Documentation: OLDCARTS mnemonic, SOAP
notes, subjective vs. objective data, Review of Systems, E/M coding
• Dermatologic Disorders: Herpes zoster, actinic keratosis, basal cell
carcinoma, acne, rosacea, infectious rashes
• Ear, Nose, and Throat Disorders: Otitis externa, otitis media, sinusitis,
pharyngitis, hearing loss
• Cardiovascular and Respiratory Disorders: Atrial fibrillation, heart
failure, DVT, pulmonary embolism, COPD
, • Gastrointestinal and Genitourinary Disorders: GERD, peptic ulcer
disease, cholecystitis, UTIs, renal conditions
• Endocrine and Metabolic Disorders: Thyroid disorders, diabetes mellitus,
Addison's disease, Cushing syndrome
Introduction
The NR511 CEA Midterm Examination assesses competency in diagnostic
reasoning and primary care practicum for advanced practice nursing students
at Chamberlain University. It evaluates clinical judgment, hypothesis
generation, diagnostic testing strategies, and evidence-based management of
common acute and chronic conditions. The exam employs multiple-choice and
scenario-based questions emphasizing real-world decision-making in primary
care settings. Candidates must demonstrate competency in differential
diagnosis, risk assessment, and patient-centered care while integrating ethical
and professional standards into clinical reasoning. This assessment ensures
students possess the critical thinking skills required for safe, effective primary
care practice.
SECTION ONE: QUESTIONS 1–100
1. A clinician continually asks whether any key diagnoses are being
overlooked and whether each lab ordered truly adds value. This process
best describes which concept?
A. SOAP documentation
B. Diagnostic reasoning
C. Medical decision making
D. Differential diagnosis
Correct answer: B. Diagnostic reasoning
RATIONALE: Diagnostic reasoning is a reflective, critical-thinking
process where the clinician questions their own thinking to ensure all
possibilities are explored and conclusions are evidence-based. It is the
,foundation of clinical judgment and involves ongoing self-assessment
throughout the patient encounter .
2. What is the first step in the diagnostic reasoning process?
A. Physical examination
B. History of Present Illness (HPI)
C. Ordering diagnostic tests
D. Formulating a differential diagnosis
Correct answer: B. History of Present Illness (HPI)
RATIONALE: The History of Present Illness is the first step in diagnostic
reasoning. It uses the OLDCARTS mnemonic to gather detailed information
about the chief complaint. This foundational information guides all
subsequent clinical decisions .
3. A diagnostic test has very few false negatives. How is this test BEST
described?
A. High specificity
B. Low specificity
C. High sensitivity
D. Low sensitivity
Correct answer: C. High sensitivity
RATIONALE: A highly sensitive test correctly identifies most people who
have the condition (true positives), resulting in very few false negatives. This
makes it a good test to help rule out a disease when negative (SnNOUT:
Sensitive test, when Negative, rules OUT disease) .
4. What is the likelihood ratio in clinical decision-making?
A. The probability of disease before testing
, B. How likely it is that a patient has the disease; a higher ratio means it is
more likely they have the disease
C. The probability of a test being positive
D. The accuracy of the physical examination
Correct answer: B. How likely it is that a patient has the disease; a higher
ratio means it is more likely they have the disease
RATIONALE: The likelihood ratio indicates how much a given diagnostic
test result changes the probability that a patient has the disease. A higher
likelihood ratio (>1) increases the probability of disease, while a lower ratio
(<1) decreases it .
5. What is needed to make a sound clinical decision?
A. Provider experience only
B. Patient preference only
C. Evidence-based research, clinical practice guidelines, and published
evidence-based algorithms
D. Institutional protocols only
Correct answer: C. Evidence-based research, clinical practice guidelines,
and published evidence-based algorithms
RATIONALE: Sound clinical decisions require integration of evidence-
based research, clinical practice guidelines, and published evidence-based
algorithms. These resources provide the foundation for high-quality, patient-
centered care .
6. Which component is the FIRST step in the diagnostic reasoning
process?
A. Physical examination
B. History of Present Illness (HPI)
DIAGNOSIS & PRIMARY CARE PRACTICUM
QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES
2026 Q&A | INSTANT DOWNLOAD PDF.
Core Domains
• Diagnostic Reasoning and Clinical Decision-Making: Hypothesis
generation, Bayesian reasoning, likelihood ratios, cognitive biases,
SNAPPS model
• Evidence-Based Practice and Clinical Guidelines: Research evidence
hierarchy, clinical practice guidelines, preventive care, quality
improvement
• Health History and Documentation: OLDCARTS mnemonic, SOAP
notes, subjective vs. objective data, Review of Systems, E/M coding
• Dermatologic Disorders: Herpes zoster, actinic keratosis, basal cell
carcinoma, acne, rosacea, infectious rashes
• Ear, Nose, and Throat Disorders: Otitis externa, otitis media, sinusitis,
pharyngitis, hearing loss
• Cardiovascular and Respiratory Disorders: Atrial fibrillation, heart
failure, DVT, pulmonary embolism, COPD
, • Gastrointestinal and Genitourinary Disorders: GERD, peptic ulcer
disease, cholecystitis, UTIs, renal conditions
• Endocrine and Metabolic Disorders: Thyroid disorders, diabetes mellitus,
Addison's disease, Cushing syndrome
Introduction
The NR511 CEA Midterm Examination assesses competency in diagnostic
reasoning and primary care practicum for advanced practice nursing students
at Chamberlain University. It evaluates clinical judgment, hypothesis
generation, diagnostic testing strategies, and evidence-based management of
common acute and chronic conditions. The exam employs multiple-choice and
scenario-based questions emphasizing real-world decision-making in primary
care settings. Candidates must demonstrate competency in differential
diagnosis, risk assessment, and patient-centered care while integrating ethical
and professional standards into clinical reasoning. This assessment ensures
students possess the critical thinking skills required for safe, effective primary
care practice.
SECTION ONE: QUESTIONS 1–100
1. A clinician continually asks whether any key diagnoses are being
overlooked and whether each lab ordered truly adds value. This process
best describes which concept?
A. SOAP documentation
B. Diagnostic reasoning
C. Medical decision making
D. Differential diagnosis
Correct answer: B. Diagnostic reasoning
RATIONALE: Diagnostic reasoning is a reflective, critical-thinking
process where the clinician questions their own thinking to ensure all
possibilities are explored and conclusions are evidence-based. It is the
,foundation of clinical judgment and involves ongoing self-assessment
throughout the patient encounter .
2. What is the first step in the diagnostic reasoning process?
A. Physical examination
B. History of Present Illness (HPI)
C. Ordering diagnostic tests
D. Formulating a differential diagnosis
Correct answer: B. History of Present Illness (HPI)
RATIONALE: The History of Present Illness is the first step in diagnostic
reasoning. It uses the OLDCARTS mnemonic to gather detailed information
about the chief complaint. This foundational information guides all
subsequent clinical decisions .
3. A diagnostic test has very few false negatives. How is this test BEST
described?
A. High specificity
B. Low specificity
C. High sensitivity
D. Low sensitivity
Correct answer: C. High sensitivity
RATIONALE: A highly sensitive test correctly identifies most people who
have the condition (true positives), resulting in very few false negatives. This
makes it a good test to help rule out a disease when negative (SnNOUT:
Sensitive test, when Negative, rules OUT disease) .
4. What is the likelihood ratio in clinical decision-making?
A. The probability of disease before testing
, B. How likely it is that a patient has the disease; a higher ratio means it is
more likely they have the disease
C. The probability of a test being positive
D. The accuracy of the physical examination
Correct answer: B. How likely it is that a patient has the disease; a higher
ratio means it is more likely they have the disease
RATIONALE: The likelihood ratio indicates how much a given diagnostic
test result changes the probability that a patient has the disease. A higher
likelihood ratio (>1) increases the probability of disease, while a lower ratio
(<1) decreases it .
5. What is needed to make a sound clinical decision?
A. Provider experience only
B. Patient preference only
C. Evidence-based research, clinical practice guidelines, and published
evidence-based algorithms
D. Institutional protocols only
Correct answer: C. Evidence-based research, clinical practice guidelines,
and published evidence-based algorithms
RATIONALE: Sound clinical decisions require integration of evidence-
based research, clinical practice guidelines, and published evidence-based
algorithms. These resources provide the foundation for high-quality, patient-
centered care .
6. Which component is the FIRST step in the diagnostic reasoning
process?
A. Physical examination
B. History of Present Illness (HPI)
