BARKLEY DIAGNOSTIC READINESS TEST #1
(DRT 1)PNP-PC CERTIFICATION REVIEW –
COMPLETE GUIDE Questions 1-100 with
Verified Answers and Detailed Rationales
INTRODUCTION
The Barkley Diagnostic Readiness Test (DRT) is a timed, 100-item exam designed
to assess readiness for the Pediatric Nurse Practitioner Primary Care (PNP-PC)
certification exam. Each question is followed by a detailed rationale to reinforce key
concepts and clinical reasoning .
PEDIATRIC ACUTE CARE (Questions 1-20)
Q1. A 3-year-old presents with inspiratory stridor that worsens at night. The
child has a barking cough and low-grade fever. What is the most likely
diagnosis?
• A. Epiglottitis
• B. Foreign body aspiration
• C. Croup (laryngotracheobronchitis)
• D. Bacterial tracheitis
Correct Answer: C. Croup (laryngotracheobronchitis)
,Rationale: Croup presents with inspiratory stridor, a barking cough, and symptoms
worsening at night. Epiglottitis typically presents with high fever, drooling, and a
toxic appearance. Foreign body aspiration has sudden onset without preceding
symptoms. Bacterial tracheitis causes a toxic appearance with high fever .
Q2. Which of the following vaccines is contraindicated in an
immunocompromised child?
• A. Hepatitis B
• B. Inactivated polio (IPV)
• C. MMR
• D. DTaP
Correct Answer: C. MMR
Rationale: MMR is a live-attenuated vaccine and is contraindicated in severe
immunosuppression. Live vaccines can cause disseminated disease in
immunocompromised hosts. Hepatitis B, IPV, and DTaP are inactivated or subunit
vaccines and are safe for immunocompromised children .
Q3. A 6-year-old with asthma uses a short-acting β2-agonist three times
weekly and experiences symptoms twice a week. According to NHLBI
guidelines, this asthma severity is best classified as:
• A. Intermittent
• B. Mild persistent
• C. Moderate persistent
• D. Severe persistent
,Correct Answer: A. Intermittent
Rationale: Intermittent asthma is defined by symptoms ≤2 days per week and
SABA use ≤2 days per week with no interference in normal activity. Persistent
classifications require greater frequency of symptoms or impairment. This patient's
symptoms fall within intermittent criteria .
Q4. Which finding in a 1-month-old infant would warrant immediate
investigation?
• A. Frequent hiccups
• B. Startle reflex present
• C. Absence of rooting reflex
• D. Irregular breathing pattern
Correct Answer: C. Absence of rooting reflex
Rationale: The rooting reflex should be present until about 4 months of age. Its
absence at 1 month may indicate a neurologic abnormality. Frequent hiccups, a
present startle reflex, and irregular breathing patterns are normal findings in
newborns .
Q5. In treating acute otitis media, which antibiotic is recommended as first-line
therapy in most children?
• A. Azithromycin
• B. Cefdinir
• C. Amoxicillin
, • D. Clindamycin
Correct Answer: C. Amoxicillin
Rationale: High-dose amoxicillin (80–90 mg/kg/day) is first-line for uncomplicated
acute otitis media due to its efficacy, narrow spectrum, low cost, and favorable
safety profile. Alternative agents (azithromycin, cefdinir, clindamycin) are used if
the patient has a penicillin allergy or there is suspected resistant pathogens .
Q6. A 4-year-old presents with fever, drooling, and stridor. The child appears
toxic and refuses to lie down. What is the priority intervention?
• A. Perform a throat culture
• B. Obtain a lateral neck radiograph
• C. Prepare for airway management
• D. Administer oral antibiotics
Correct Answer: C. Prepare for airway management
Rationale: This presentation is highly concerning for epiglottitis, a medical
emergency that can rapidly progress to complete airway obstruction. Airway
management is the priority. Lateral neck radiographs should not delay airway
intervention, and oral intake should be avoided.
Q7. A child with type 1 diabetes presents with fruity breath odor and deep,
rapid respirations. The most immediate intervention is:
• A. Administer long-acting insulin
(DRT 1)PNP-PC CERTIFICATION REVIEW –
COMPLETE GUIDE Questions 1-100 with
Verified Answers and Detailed Rationales
INTRODUCTION
The Barkley Diagnostic Readiness Test (DRT) is a timed, 100-item exam designed
to assess readiness for the Pediatric Nurse Practitioner Primary Care (PNP-PC)
certification exam. Each question is followed by a detailed rationale to reinforce key
concepts and clinical reasoning .
PEDIATRIC ACUTE CARE (Questions 1-20)
Q1. A 3-year-old presents with inspiratory stridor that worsens at night. The
child has a barking cough and low-grade fever. What is the most likely
diagnosis?
• A. Epiglottitis
• B. Foreign body aspiration
• C. Croup (laryngotracheobronchitis)
• D. Bacterial tracheitis
Correct Answer: C. Croup (laryngotracheobronchitis)
,Rationale: Croup presents with inspiratory stridor, a barking cough, and symptoms
worsening at night. Epiglottitis typically presents with high fever, drooling, and a
toxic appearance. Foreign body aspiration has sudden onset without preceding
symptoms. Bacterial tracheitis causes a toxic appearance with high fever .
Q2. Which of the following vaccines is contraindicated in an
immunocompromised child?
• A. Hepatitis B
• B. Inactivated polio (IPV)
• C. MMR
• D. DTaP
Correct Answer: C. MMR
Rationale: MMR is a live-attenuated vaccine and is contraindicated in severe
immunosuppression. Live vaccines can cause disseminated disease in
immunocompromised hosts. Hepatitis B, IPV, and DTaP are inactivated or subunit
vaccines and are safe for immunocompromised children .
Q3. A 6-year-old with asthma uses a short-acting β2-agonist three times
weekly and experiences symptoms twice a week. According to NHLBI
guidelines, this asthma severity is best classified as:
• A. Intermittent
• B. Mild persistent
• C. Moderate persistent
• D. Severe persistent
,Correct Answer: A. Intermittent
Rationale: Intermittent asthma is defined by symptoms ≤2 days per week and
SABA use ≤2 days per week with no interference in normal activity. Persistent
classifications require greater frequency of symptoms or impairment. This patient's
symptoms fall within intermittent criteria .
Q4. Which finding in a 1-month-old infant would warrant immediate
investigation?
• A. Frequent hiccups
• B. Startle reflex present
• C. Absence of rooting reflex
• D. Irregular breathing pattern
Correct Answer: C. Absence of rooting reflex
Rationale: The rooting reflex should be present until about 4 months of age. Its
absence at 1 month may indicate a neurologic abnormality. Frequent hiccups, a
present startle reflex, and irregular breathing patterns are normal findings in
newborns .
Q5. In treating acute otitis media, which antibiotic is recommended as first-line
therapy in most children?
• A. Azithromycin
• B. Cefdinir
• C. Amoxicillin
, • D. Clindamycin
Correct Answer: C. Amoxicillin
Rationale: High-dose amoxicillin (80–90 mg/kg/day) is first-line for uncomplicated
acute otitis media due to its efficacy, narrow spectrum, low cost, and favorable
safety profile. Alternative agents (azithromycin, cefdinir, clindamycin) are used if
the patient has a penicillin allergy or there is suspected resistant pathogens .
Q6. A 4-year-old presents with fever, drooling, and stridor. The child appears
toxic and refuses to lie down. What is the priority intervention?
• A. Perform a throat culture
• B. Obtain a lateral neck radiograph
• C. Prepare for airway management
• D. Administer oral antibiotics
Correct Answer: C. Prepare for airway management
Rationale: This presentation is highly concerning for epiglottitis, a medical
emergency that can rapidly progress to complete airway obstruction. Airway
management is the priority. Lateral neck radiographs should not delay airway
intervention, and oral intake should be avoided.
Q7. A child with type 1 diabetes presents with fruity breath odor and deep,
rapid respirations. The most immediate intervention is:
• A. Administer long-acting insulin
