The Ultimate and Complete NR 511 Differential Diagnosis and Primary Care Practicum
Final Exam Study Guide 2026–2027, Covering Advanced Diagnostic Reasoning,
Differential Diagnosis, Patient History and Physical Examination, Diagnostic Testing,
Evidence-Based Primary Care Management, Gastrointestinal Disorders, IBS, GERD,
Esophageal Stricture, Crohn’s Disease, Acute Cholecystitis, Appendicitis, Peptic Ulcer
Disease, Chronic Constipation, Iron Deficiency and Iron Studies, Genitourinary
Disorders, UTI, Urinary Incontinence, Benign Prostatic Hyperplasia, Male
Reproductive Disorders, Upper and Lower Extremity Conditions, Rotator Cuff Injuries,
ACL Injuries, Pediatric Orthopedic Conditions, Neck and Back Disorders, Herniated
Discs, Cervical Spondylosis, Neuropathic Pain, Bites, Lacerations, Wound Assessment
and Management, Pharmacologic Therapy, Laboratory Interpretation, Imaging,
Referral Criteria, Patient Education, Clinical Case Scenarios, Practice Questions With
Detailed Rationales, and Comprehensive Preparation for the Chamberlain University
NR 511 Final Assessment
Question 1: A 45-year-old male with a history of hypertension presents with acute onset of
severe, tearing chest pain radiating to his back. His blood pressure is 180/100 mmHg in the
right arm and 130/80 mmHg in the left arm. Which of the following is the most appropriate
initial imaging study to confirm the diagnosis?
A. Chest X-ray
B. CT angiography of the chest
C. Transthoracic echocardiogram
D. MRI of the chest
CORRECT ANSWER: B. CT angiography of the chest
Rationale: The patient's presentation is classic for an aortic dissection. CT angiography is the
gold standard initial imaging modality due to its high sensitivity and specificity, rapid
acquisition, and widespread availability. It can accurately identify the intimal flap and
determine the extent of the dissection. Chest X-ray may show a widened mediastinum but is
not diagnostic. Echocardiography (TTE) is limited in visualizing the ascending aorta and arch.
MRI is highly accurate but takes too long and is not readily available for an emergent condition.
Question 2: A 28-year-old female presents with acute dysuria, urinary frequency, and
suprapubic pain. She has no fever or flank pain. Urinalysis reveals positive leukocyte esterase
and nitrites. Which of the following is the most appropriate first-line empiric antibiotic for
this patient, assuming no drug allergies?
A. Ciprofloxacin
B. Nitrofurantoin
C. Amoxicillin
D. Doxycycline
,CORRECT ANSWER: B. Nitrofurantoin
Rationale: This patient has an uncomplicated acute cystitis. Nitrofurantoin is a first-line
antibiotic recommended by the Infectious Diseases Society of America (IDSA) for empiric
treatment of uncomplicated UTIs due to its low resistance rates among E. coli and minimal
impact on the gut flora. Ciprofloxacin is effective but is associated with higher resistance and is
generally reserved for complicated UTIs or pyelonephritis. Amoxicillin has high resistance rates.
Doxycycline is not effective for E. coli.
Question 3: A 60-year-old obese male with a history of GERD presents with a chronic cough,
hoarseness, and a sensation of a lump in his throat. He denies heartburn. What is the most
likely diagnosis?
A. Asthma
B. Laryngopharyngeal reflux (LPR)
C. Chronic bronchitis
D. Esophageal stricture
CORRECT ANSWER: B. Laryngopharyngeal reflux (LPR)
Rationale: LPR, or "silent reflux," often presents with atypical symptoms such as chronic cough,
hoarseness, globus sensation, and throat clearing without classic heartburn. The patient's
history of GERD and obesity are risk factors. Asthma would present with wheezing and dyspnea.
Chronic bronchitis would present with productive cough. Esophageal stricture typically presents
with dysphagia.
Question 4: A 35-year-old female presents with a 3-day history of sudden onset of severe
vertigo, nausea, and vomiting. She reports that the vertigo is worsened by head movement.
She has nystagmus and a positive Dix-Hallpike maneuver. What is the most appropriate initial
management?
A. Meclizine and rest
B. Epley maneuver
C. Antibiotics
D. MRI of the brain
CORRECT ANSWER: B. Epley maneuver
Rationale: The positive Dix-Hallpike maneuver confirms the diagnosis of benign paroxysmal
positional vertigo (BPPV). The Epley maneuver is a canalith repositioning procedure that is the
definitive treatment for posterior canal BPPV. While meclizine can provide symptomatic relief,
the Epley maneuver is more definitive. Antibiotics are for infectious causes and an MRI is not
indicated for BPPV.
,Question 5: A 72-year-old male presents with a painful, vesicular rash on the right side of his
forehead and the tip of his nose. He has had the rash for 3 days. Which of the following is the
most critical concern in this patient?
A. Bacterial superinfection
B. Postherpetic neuralgia
C. Ophthalmic involvement (Herpes Zoster Ophthalmicus)
D. Meningitis
CORRECT ANSWER: C. Ophthalmic involvement (Herpes Zoster Ophthalmicus)
Rationale: The involvement of the tip of the nose (Hutchinson's sign) indicates that the
nasociliary branch of the trigeminal nerve is affected, which puts the eye at high risk for Herpes
Zoster Ophthalmicus. This is a medical emergency requiring urgent ophthalmology consultation
to prevent vision loss. While other complications are possible, ophthalmic involvement is the
most immediate and sight-threatening concern.
Question 6: A 25-year-old male presents with acute testicular pain and swelling that began 2
hours ago. He denies dysuria or fever. On exam, the affected testicle is high-riding and
tender. Cremasteric reflex is absent. What is the most appropriate initial action?
A. Urinalysis and culture
B. Antibiotics for epididymitis
C. Scrotal ultrasound with Doppler
D. Surgical consultation for emergent detorsion
CORRECT ANSWER: D. Surgical consultation for emergent detorsion
Rationale: The presentation of acute, severe testicular pain, a high-riding testicle, and an absent
cremasteric reflex is classic for testicular torsion. This is a surgical emergency. While a scrotal
ultrasound with Doppler can confirm the diagnosis, it should not delay urologic consultation if
clinical suspicion is high. Time is of the essence to preserve testicular viability.
Question 7: A 50-year-old female with a history of diabetes presents with a non-healing ulcer
on the plantar surface of her foot. The ulcer is surrounded by a rim of callus. Which of the
following is the most important initial step in managing this patient's foot ulcer?
A. Prescribe a course of oral antibiotics
B. Debride the ulcer and surrounding callus
C. Obtain an MRI to rule out osteomyelitis
D. Refer for a vascular consult
CORRECT ANSWER: B. Debride the ulcer and surrounding callus
Rationale: The primary goal in managing a diabetic foot ulcer is to remove the necrotic tissue
and callus, which are barriers to healing and can harbor bacteria. Debridement allows for
, proper evaluation of the wound depth and promotes granulation tissue formation. Antibiotics
are important but secondary to mechanical debridement. MRI is useful for osteomyelitis but
not the first step. A vascular consult may be needed later, but debridement is the immediate
priority.
Question 8: A 32-year-old female presents with a red, tender, painful lump on her right eyelid
that has been present for 2 days. She wears contact lenses. On exam, there is a localized
abscess on the margin of the eyelid. What is the most likely diagnosis?
A. Chalazion
B. Hordeolum (stye)
C. Blepharitis
D. Conjunctivitis
CORRECT ANSWER: B. Hordeolum (stye)
Rationale: A hordeolum is an acute, localized, purulent infection of the eyelid margin, typically
caused by Staphylococcus aureus. It presents as a red, painful, tender lump. A chalazion is a
chronic, painless, granulomatous inflammation of a meibomian gland. Blepharitis is a diffuse
inflammation of the eyelids and conjunctivitis is inflammation of the conjunctiva.
Question 9: A 68-year-old male presents with progressive pain and stiffness in his bilateral
shoulders, hips, and lower back over the past 2 months. He also reports morning stiffness
lasting 90 minutes and recent headaches, particularly when chewing. His ESR is 85 mm/hr.
What is the most likely diagnosis?
A. Rheumatoid arthritis
B. Osteoarthritis
C. Polymyalgia rheumatica
D. Fibromyalgia
CORRECT ANSWER: C. Polymyalgia rheumatica
Rationale: Polymyalgia rheumatica (PMR) is characterized by pain and stiffness in the proximal
muscle groups (shoulders, hips, neck) in patients over 50, with markedly elevated ESR and
morning stiffness lasting >45 minutes. The associated headache, especially with mastication
(jaw claudication), raises concern for giant cell arteritis, which is a common comorbidity with
PMR. Rheumatoid arthritis typically involves smaller joints. Osteoarthritis worsens with use and
improves with rest. Fibromyalgia has normal inflammatory markers.
Question 10: A 4-year-old child presents with a 3-day history of a barking cough, inspiratory
stridor, and low-grade fever. Symptoms are worse at night. Which of the following is the
most likely diagnosis?
A. Epiglottitis
B. Croup
Final Exam Study Guide 2026–2027, Covering Advanced Diagnostic Reasoning,
Differential Diagnosis, Patient History and Physical Examination, Diagnostic Testing,
Evidence-Based Primary Care Management, Gastrointestinal Disorders, IBS, GERD,
Esophageal Stricture, Crohn’s Disease, Acute Cholecystitis, Appendicitis, Peptic Ulcer
Disease, Chronic Constipation, Iron Deficiency and Iron Studies, Genitourinary
Disorders, UTI, Urinary Incontinence, Benign Prostatic Hyperplasia, Male
Reproductive Disorders, Upper and Lower Extremity Conditions, Rotator Cuff Injuries,
ACL Injuries, Pediatric Orthopedic Conditions, Neck and Back Disorders, Herniated
Discs, Cervical Spondylosis, Neuropathic Pain, Bites, Lacerations, Wound Assessment
and Management, Pharmacologic Therapy, Laboratory Interpretation, Imaging,
Referral Criteria, Patient Education, Clinical Case Scenarios, Practice Questions With
Detailed Rationales, and Comprehensive Preparation for the Chamberlain University
NR 511 Final Assessment
Question 1: A 45-year-old male with a history of hypertension presents with acute onset of
severe, tearing chest pain radiating to his back. His blood pressure is 180/100 mmHg in the
right arm and 130/80 mmHg in the left arm. Which of the following is the most appropriate
initial imaging study to confirm the diagnosis?
A. Chest X-ray
B. CT angiography of the chest
C. Transthoracic echocardiogram
D. MRI of the chest
CORRECT ANSWER: B. CT angiography of the chest
Rationale: The patient's presentation is classic for an aortic dissection. CT angiography is the
gold standard initial imaging modality due to its high sensitivity and specificity, rapid
acquisition, and widespread availability. It can accurately identify the intimal flap and
determine the extent of the dissection. Chest X-ray may show a widened mediastinum but is
not diagnostic. Echocardiography (TTE) is limited in visualizing the ascending aorta and arch.
MRI is highly accurate but takes too long and is not readily available for an emergent condition.
Question 2: A 28-year-old female presents with acute dysuria, urinary frequency, and
suprapubic pain. She has no fever or flank pain. Urinalysis reveals positive leukocyte esterase
and nitrites. Which of the following is the most appropriate first-line empiric antibiotic for
this patient, assuming no drug allergies?
A. Ciprofloxacin
B. Nitrofurantoin
C. Amoxicillin
D. Doxycycline
,CORRECT ANSWER: B. Nitrofurantoin
Rationale: This patient has an uncomplicated acute cystitis. Nitrofurantoin is a first-line
antibiotic recommended by the Infectious Diseases Society of America (IDSA) for empiric
treatment of uncomplicated UTIs due to its low resistance rates among E. coli and minimal
impact on the gut flora. Ciprofloxacin is effective but is associated with higher resistance and is
generally reserved for complicated UTIs or pyelonephritis. Amoxicillin has high resistance rates.
Doxycycline is not effective for E. coli.
Question 3: A 60-year-old obese male with a history of GERD presents with a chronic cough,
hoarseness, and a sensation of a lump in his throat. He denies heartburn. What is the most
likely diagnosis?
A. Asthma
B. Laryngopharyngeal reflux (LPR)
C. Chronic bronchitis
D. Esophageal stricture
CORRECT ANSWER: B. Laryngopharyngeal reflux (LPR)
Rationale: LPR, or "silent reflux," often presents with atypical symptoms such as chronic cough,
hoarseness, globus sensation, and throat clearing without classic heartburn. The patient's
history of GERD and obesity are risk factors. Asthma would present with wheezing and dyspnea.
Chronic bronchitis would present with productive cough. Esophageal stricture typically presents
with dysphagia.
Question 4: A 35-year-old female presents with a 3-day history of sudden onset of severe
vertigo, nausea, and vomiting. She reports that the vertigo is worsened by head movement.
She has nystagmus and a positive Dix-Hallpike maneuver. What is the most appropriate initial
management?
A. Meclizine and rest
B. Epley maneuver
C. Antibiotics
D. MRI of the brain
CORRECT ANSWER: B. Epley maneuver
Rationale: The positive Dix-Hallpike maneuver confirms the diagnosis of benign paroxysmal
positional vertigo (BPPV). The Epley maneuver is a canalith repositioning procedure that is the
definitive treatment for posterior canal BPPV. While meclizine can provide symptomatic relief,
the Epley maneuver is more definitive. Antibiotics are for infectious causes and an MRI is not
indicated for BPPV.
,Question 5: A 72-year-old male presents with a painful, vesicular rash on the right side of his
forehead and the tip of his nose. He has had the rash for 3 days. Which of the following is the
most critical concern in this patient?
A. Bacterial superinfection
B. Postherpetic neuralgia
C. Ophthalmic involvement (Herpes Zoster Ophthalmicus)
D. Meningitis
CORRECT ANSWER: C. Ophthalmic involvement (Herpes Zoster Ophthalmicus)
Rationale: The involvement of the tip of the nose (Hutchinson's sign) indicates that the
nasociliary branch of the trigeminal nerve is affected, which puts the eye at high risk for Herpes
Zoster Ophthalmicus. This is a medical emergency requiring urgent ophthalmology consultation
to prevent vision loss. While other complications are possible, ophthalmic involvement is the
most immediate and sight-threatening concern.
Question 6: A 25-year-old male presents with acute testicular pain and swelling that began 2
hours ago. He denies dysuria or fever. On exam, the affected testicle is high-riding and
tender. Cremasteric reflex is absent. What is the most appropriate initial action?
A. Urinalysis and culture
B. Antibiotics for epididymitis
C. Scrotal ultrasound with Doppler
D. Surgical consultation for emergent detorsion
CORRECT ANSWER: D. Surgical consultation for emergent detorsion
Rationale: The presentation of acute, severe testicular pain, a high-riding testicle, and an absent
cremasteric reflex is classic for testicular torsion. This is a surgical emergency. While a scrotal
ultrasound with Doppler can confirm the diagnosis, it should not delay urologic consultation if
clinical suspicion is high. Time is of the essence to preserve testicular viability.
Question 7: A 50-year-old female with a history of diabetes presents with a non-healing ulcer
on the plantar surface of her foot. The ulcer is surrounded by a rim of callus. Which of the
following is the most important initial step in managing this patient's foot ulcer?
A. Prescribe a course of oral antibiotics
B. Debride the ulcer and surrounding callus
C. Obtain an MRI to rule out osteomyelitis
D. Refer for a vascular consult
CORRECT ANSWER: B. Debride the ulcer and surrounding callus
Rationale: The primary goal in managing a diabetic foot ulcer is to remove the necrotic tissue
and callus, which are barriers to healing and can harbor bacteria. Debridement allows for
, proper evaluation of the wound depth and promotes granulation tissue formation. Antibiotics
are important but secondary to mechanical debridement. MRI is useful for osteomyelitis but
not the first step. A vascular consult may be needed later, but debridement is the immediate
priority.
Question 8: A 32-year-old female presents with a red, tender, painful lump on her right eyelid
that has been present for 2 days. She wears contact lenses. On exam, there is a localized
abscess on the margin of the eyelid. What is the most likely diagnosis?
A. Chalazion
B. Hordeolum (stye)
C. Blepharitis
D. Conjunctivitis
CORRECT ANSWER: B. Hordeolum (stye)
Rationale: A hordeolum is an acute, localized, purulent infection of the eyelid margin, typically
caused by Staphylococcus aureus. It presents as a red, painful, tender lump. A chalazion is a
chronic, painless, granulomatous inflammation of a meibomian gland. Blepharitis is a diffuse
inflammation of the eyelids and conjunctivitis is inflammation of the conjunctiva.
Question 9: A 68-year-old male presents with progressive pain and stiffness in his bilateral
shoulders, hips, and lower back over the past 2 months. He also reports morning stiffness
lasting 90 minutes and recent headaches, particularly when chewing. His ESR is 85 mm/hr.
What is the most likely diagnosis?
A. Rheumatoid arthritis
B. Osteoarthritis
C. Polymyalgia rheumatica
D. Fibromyalgia
CORRECT ANSWER: C. Polymyalgia rheumatica
Rationale: Polymyalgia rheumatica (PMR) is characterized by pain and stiffness in the proximal
muscle groups (shoulders, hips, neck) in patients over 50, with markedly elevated ESR and
morning stiffness lasting >45 minutes. The associated headache, especially with mastication
(jaw claudication), raises concern for giant cell arteritis, which is a common comorbidity with
PMR. Rheumatoid arthritis typically involves smaller joints. Osteoarthritis worsens with use and
improves with rest. Fibromyalgia has normal inflammatory markers.
Question 10: A 4-year-old child presents with a 3-day history of a barking cough, inspiratory
stridor, and low-grade fever. Symptoms are worse at night. Which of the following is the
most likely diagnosis?
A. Epiglottitis
B. Croup
