1
NR511 Midterm Exam Differential Diagnosis and
Primary Care Practicum Review Complete
Practice Assessment Actual Exam 2026/2027
Complete Exam-Style Questions with Detailed
Rationales | 100% Verified | Pass Guaranteed –
A+ Graded
Part I: Foundations of Differential Diagnosis & Clinical Reasoning (Questions 1-15)
Q1: A 52-year-old male presents to your clinic with a chief complaint of intermittent chest pressure that
occurs with exertion and resolves with rest. He has a history of hypertension and hyperlipidemia. His
father had a myocardial infarction at age 54. During your initial assessment, which of the following is the
most appropriate first step in developing your differential diagnosis?
A. Order a stress test immediately to rule out coronary artery disease
B. Focus your history on characterizing the pain and identifying cardiac versus non-cardiac features
before selecting diagnostics
C. [CORRECT] Begin with a thorough history characterizing the pain, associated symptoms, and risk
stratification, then perform a focused cardiovascular examination before generating your differential
D. Refer the patient directly to cardiology before conducting your own assessment
Correct Answer: C
Rationale: The best answer is C. When a patient presents with chest discomfort, your first job is to
gather enough clinical information through history and physical exam to determine whether this is likely
cardiac, pulmonary, gastrointestinal, or musculoskeletal in origin. This aligns with NR511 curriculum on
systematic clinical reasoning—you don't order tests or refer until you've developed a solid working
differential based on your assessment. Jumping to a stress test or referral without your own clinical
reasoning skips the foundational diagnostic process we teach.
Q2: Which of the following best describes the primary purpose of generating a differential diagnosis list
when evaluating a patient with an undifferentiated complaint?
A. To confirm the most likely diagnosis before ordering any tests
B. To create a ranked list of possible conditions that guides diagnostic testing and reduces the risk of
premature closure
,2
C. [CORRECT] To develop a prioritized list of plausible conditions that protects against diagnostic
anchoring and helps guide your clinical workup
D. To eliminate all rare conditions from consideration early in the encounter
Correct Answer: C
Rationale: The best answer is C. A good differential isn't just a list—it's a prioritized, working hypothesis
that keeps you from latching onto the first idea that comes to mind. This matches the primary care
guideline that diagnostic reasoning requires you to consider multiple possibilities, especially in
undifferentiated complaints where early closure can lead to missed diagnoses.
Q3: A 38-year-old female presents with fatigue, mild weight gain, and constipation over the past three
months. Her vital signs are stable, and her physical exam is largely unremarkable. You are considering
hypothyroidism, depression, anemia, and chronic fatigue syndrome in your differential. Which clinical
reasoning strategy is most appropriate for prioritizing these possibilities?
A. Order a complete metabolic panel, TSH, CBC, and depression screening simultaneously to save time
B. Use the patient's age, symptom pattern, and prevalence data to determine which conditions are most
likely and which tests to order first
C. [CORRECT] Apply probabilistic reasoning by considering the patient's demographics, symptom cluster,
and disease prevalence to rank your differential and select the most efficient initial tests
D. Start with the most life-threatening condition on the list regardless of clinical probability
Correct Answer: C
Rationale: The best answer is C. In primary care, you use probabilistic reasoning—meaning you weigh
how common a condition is in your patient's population against how well their symptom pattern fits.
This aligns with NR511 curriculum on diagnostic reasoning frameworks. You don't shotgun labs on every
patient, but you also don't ignore serious conditions; you use clinical judgment to find the right starting
point.
Q4: During a physical examination, you note that a 67-year-old patient has a new irregularly irregular
rhythm with no discernible P waves on your office EKG. The patient is asymptomatic with a rate of 88
bpm. Which of the following is the most appropriate next step in your diagnostic reasoning process?
A. Immediately anticoagulate and refer to cardiology for electrical cardioversion
B. Recheck the rhythm manually and assume it is sinus arrhythmia since the patient feels fine
C. [CORRECT] Recognize this as atrial fibrillation, assess the patient's CHA2DS2-VASc score, and
determine whether rate control, rhythm control, or anticoagulation is indicated based on their stroke
risk and symptoms
D. Order a 24-hour Holter monitor and wait for results before making any clinical decisions
Correct Answer: C
, 3
Rationale: The best answer is C. This EKG finding is classic atrial fibrillation, and in primary care, your
next step is risk stratification using CHA2DS2-VASc to guide anticoagulation decisions, not immediate
cardioversion or doing nothing. This matches the primary care guideline that newly identified afib
requires systematic evaluation of stroke risk and symptom burden before selecting a management
pathway.
Q5: A 28-year-old graduate student presents with a sore throat, fever of 101.2°F, and tender anterior
cervical lymphadenopathy. On exam, you note tonsillar exudates and no cough. Using the Centor criteria
as part of your clinical decision-making, which factor is NOT included in the Centor score?
A. History of fever
B. Absence of cough
C. [CORRECT] Presence of a headache
D. Tonsillar exudates
Correct Answer: C
Rationale: The best answer is C. The Centor criteria include fever, absence of cough, tonsillar exudates
or swelling, and tender anterior cervical adenopathy—headache is not one of the five criteria. This is a
straightforward recall question that aligns with NR511 curriculum on using validated clinical decision
rules to guide testing and treatment for common conditions like strep pharyngitis.
Q6: You are evaluating a 45-year-old male with episodic burning chest pain that occurs after meals and
when lying down at night. He denies exertional component, radiation, or shortness of breath. His vital
signs are normal, and his cardiac exam is unremarkable. Based on your clinical reasoning, which
condition should be highest on your differential diagnosis?
A. Unstable angina requiring immediate cardiology referral
B. Peptic ulcer disease with potential perforation
C. [CORRECT] Gastroesophageal reflux disease based on the classic relationship of symptoms to meals
and positioning
D. Costochondritis with referred pain patterns
Correct Answer: C
Rationale: The best answer is C. The postprandial timing, positional worsening when supine, and
absence of cardiac red flags make GERD the most likely diagnosis here. This aligns with NR511
curriculum on pattern recognition—when a symptom cluster fits a classic presentation for a common
condition, that should top your differential unless there are concerning features that suggest otherwise.
Q7: In evidence-based practice, which of the following represents the highest level of evidence for
making clinical decisions about treatment effectiveness?
A. Expert opinion based on clinical experience
B. A large randomized controlled trial with clinically meaningful outcomes
NR511 Midterm Exam Differential Diagnosis and
Primary Care Practicum Review Complete
Practice Assessment Actual Exam 2026/2027
Complete Exam-Style Questions with Detailed
Rationales | 100% Verified | Pass Guaranteed –
A+ Graded
Part I: Foundations of Differential Diagnosis & Clinical Reasoning (Questions 1-15)
Q1: A 52-year-old male presents to your clinic with a chief complaint of intermittent chest pressure that
occurs with exertion and resolves with rest. He has a history of hypertension and hyperlipidemia. His
father had a myocardial infarction at age 54. During your initial assessment, which of the following is the
most appropriate first step in developing your differential diagnosis?
A. Order a stress test immediately to rule out coronary artery disease
B. Focus your history on characterizing the pain and identifying cardiac versus non-cardiac features
before selecting diagnostics
C. [CORRECT] Begin with a thorough history characterizing the pain, associated symptoms, and risk
stratification, then perform a focused cardiovascular examination before generating your differential
D. Refer the patient directly to cardiology before conducting your own assessment
Correct Answer: C
Rationale: The best answer is C. When a patient presents with chest discomfort, your first job is to
gather enough clinical information through history and physical exam to determine whether this is likely
cardiac, pulmonary, gastrointestinal, or musculoskeletal in origin. This aligns with NR511 curriculum on
systematic clinical reasoning—you don't order tests or refer until you've developed a solid working
differential based on your assessment. Jumping to a stress test or referral without your own clinical
reasoning skips the foundational diagnostic process we teach.
Q2: Which of the following best describes the primary purpose of generating a differential diagnosis list
when evaluating a patient with an undifferentiated complaint?
A. To confirm the most likely diagnosis before ordering any tests
B. To create a ranked list of possible conditions that guides diagnostic testing and reduces the risk of
premature closure
,2
C. [CORRECT] To develop a prioritized list of plausible conditions that protects against diagnostic
anchoring and helps guide your clinical workup
D. To eliminate all rare conditions from consideration early in the encounter
Correct Answer: C
Rationale: The best answer is C. A good differential isn't just a list—it's a prioritized, working hypothesis
that keeps you from latching onto the first idea that comes to mind. This matches the primary care
guideline that diagnostic reasoning requires you to consider multiple possibilities, especially in
undifferentiated complaints where early closure can lead to missed diagnoses.
Q3: A 38-year-old female presents with fatigue, mild weight gain, and constipation over the past three
months. Her vital signs are stable, and her physical exam is largely unremarkable. You are considering
hypothyroidism, depression, anemia, and chronic fatigue syndrome in your differential. Which clinical
reasoning strategy is most appropriate for prioritizing these possibilities?
A. Order a complete metabolic panel, TSH, CBC, and depression screening simultaneously to save time
B. Use the patient's age, symptom pattern, and prevalence data to determine which conditions are most
likely and which tests to order first
C. [CORRECT] Apply probabilistic reasoning by considering the patient's demographics, symptom cluster,
and disease prevalence to rank your differential and select the most efficient initial tests
D. Start with the most life-threatening condition on the list regardless of clinical probability
Correct Answer: C
Rationale: The best answer is C. In primary care, you use probabilistic reasoning—meaning you weigh
how common a condition is in your patient's population against how well their symptom pattern fits.
This aligns with NR511 curriculum on diagnostic reasoning frameworks. You don't shotgun labs on every
patient, but you also don't ignore serious conditions; you use clinical judgment to find the right starting
point.
Q4: During a physical examination, you note that a 67-year-old patient has a new irregularly irregular
rhythm with no discernible P waves on your office EKG. The patient is asymptomatic with a rate of 88
bpm. Which of the following is the most appropriate next step in your diagnostic reasoning process?
A. Immediately anticoagulate and refer to cardiology for electrical cardioversion
B. Recheck the rhythm manually and assume it is sinus arrhythmia since the patient feels fine
C. [CORRECT] Recognize this as atrial fibrillation, assess the patient's CHA2DS2-VASc score, and
determine whether rate control, rhythm control, or anticoagulation is indicated based on their stroke
risk and symptoms
D. Order a 24-hour Holter monitor and wait for results before making any clinical decisions
Correct Answer: C
, 3
Rationale: The best answer is C. This EKG finding is classic atrial fibrillation, and in primary care, your
next step is risk stratification using CHA2DS2-VASc to guide anticoagulation decisions, not immediate
cardioversion or doing nothing. This matches the primary care guideline that newly identified afib
requires systematic evaluation of stroke risk and symptom burden before selecting a management
pathway.
Q5: A 28-year-old graduate student presents with a sore throat, fever of 101.2°F, and tender anterior
cervical lymphadenopathy. On exam, you note tonsillar exudates and no cough. Using the Centor criteria
as part of your clinical decision-making, which factor is NOT included in the Centor score?
A. History of fever
B. Absence of cough
C. [CORRECT] Presence of a headache
D. Tonsillar exudates
Correct Answer: C
Rationale: The best answer is C. The Centor criteria include fever, absence of cough, tonsillar exudates
or swelling, and tender anterior cervical adenopathy—headache is not one of the five criteria. This is a
straightforward recall question that aligns with NR511 curriculum on using validated clinical decision
rules to guide testing and treatment for common conditions like strep pharyngitis.
Q6: You are evaluating a 45-year-old male with episodic burning chest pain that occurs after meals and
when lying down at night. He denies exertional component, radiation, or shortness of breath. His vital
signs are normal, and his cardiac exam is unremarkable. Based on your clinical reasoning, which
condition should be highest on your differential diagnosis?
A. Unstable angina requiring immediate cardiology referral
B. Peptic ulcer disease with potential perforation
C. [CORRECT] Gastroesophageal reflux disease based on the classic relationship of symptoms to meals
and positioning
D. Costochondritis with referred pain patterns
Correct Answer: C
Rationale: The best answer is C. The postprandial timing, positional worsening when supine, and
absence of cardiac red flags make GERD the most likely diagnosis here. This aligns with NR511
curriculum on pattern recognition—when a symptom cluster fits a classic presentation for a common
condition, that should top your differential unless there are concerning features that suggest otherwise.
Q7: In evidence-based practice, which of the following represents the highest level of evidence for
making clinical decisions about treatment effectiveness?
A. Expert opinion based on clinical experience
B. A large randomized controlled trial with clinically meaningful outcomes
