NURS_402: PNCB Certified Pediatric Nurse
Practitioner (PNP-PC) Primary Care Exam
Master Review Prep with Detailed Rationales
Course Code: NURS_402
Course Name: Certified Pediatric Nurse Practitioner - Primary Care (PNP-
PC) Review
Topic: Comprehensive Pediatric Development, Preventative Care, Acute
Care, and Chronic Management Bank
Academic Year: 2026/2027
1. A 9-month-old infant is brought to the clinic for a routine well-child check.
The mother expresses concern that the infant cannot yet wave bye-bye or say
"mama" and "dada" specifically. Developmental screening reveals the infant
sits unsupported, crawls on hands and knees, uses a crude pincer grasp, and
plays peek-a-boo. Which clinical action represents the correct answer?
A. Refer the infant immediately to early intervention for global
developmental delay.
B. Reassure the mother that these behaviors are expected
developmental milestones for a 9-month-old infant.
C. Order a diagnostic chromosomal microarray and metabolic panel.
D. Schedule a repeat developmental evaluation in 1 month.
CORRECT ANSWER: B. Reassure the mother that these behaviors are
expected developmental milestones for a 9-month-old infant.
RATIONALE: A 9-month-old infant sitting unsupported, crawling, using
a crude pincer grasp, and playing social games like peek-a-boo is meeting
appropriate developmental milestones. Specific words like "mama" or
"dada" and waving bye-bye typically emerge later, between 10 and 12
months of age. Immediate early intervention or expensive genetic panels are
unwarranted because the infant is progressing normally along the
development curve.
2. A 2-year-old child presents with a 3-day history of high fever, irritability,
and a bright red, maculopapular rash that started on the trunk and spread to
the face and extremities. The mother reports that the fever broke abruptly
, this morning just before the rash appeared. Which viral pathogen represents
the correct answer?
A. Human herpesvirus 6 (HHV-6)
B. Parvovirus B19
C. Coxsackievirus A16
D. Measles virus
CORRECT ANSWER: A. Human herpesvirus 6 (HHV-6)
RATIONALE: This scenario describes roseola infantum (exanthem
subitum), which is caused by human herpesvirus 6 (HHV-6). The classic
clinical presentation features a high fever (often >103°F) for 3 to 5 days that
resolves suddenly, followed immediately by the appearance of a blanching,
maculopapular rash starting on the trunk and extending outward. Parvovirus
B19 causes erythema infectiosum ("slapped-cheek" rash). Coxsackievirus
A16 causes hand-foot-and-mouth disease. Measles virus features a high
fever concurrent with a maculopapular rash, cough, coryza, and
conjunctivitis.
3. An 18-month-old toddler is evaluated for recurrent middle ear infections.
Physical examination reveals pearly gray tympanic membranes with no signs
of acute inflammation, but tympanometry shows a flat (Type B) curve
bilaterally with normal ear canal volume. The child passes an objective
behavioral audiometry screen. What is the correct answer for management?
A. Prescribe an immediate 10-day course of high-dose amoxicillin.
B. Recommend bilateral myringotomy tube placement today.
C. Monitor and reevaluate for persistent middle ear effusion in 3
months.
D. Initiate daily oral antihistamine and decongestant therapy.
CORRECT ANSWER: C. Monitor and reevaluate for persistent middle
ear effusion in 3 months.
RATIONALE: The client presents with otitis media with effusion
(OME), confirmed by a flat (Type B) tympanogram with normal volume
(ruling out an open perforation or patent tympanostomy tubes) and an
absence of acute inflammatory signs. Because the child passes a hearing
screen and lacks severe distress, clinical guidelines dictate watchful waiting
and reevaluation in 3 months from the date of diagnosis, as most effusions
resolve spontaneously. Antibiotics are for acute infections, and surgical
, tubes require chronic, unyielding fluid tracking with documented hearing
deficits.
4. A 4-year-old child is brought to the primary care clinic with a 2-week
history of a nocturnal cough and intermittent wheezing triggered by running
outside. The mother has a history of allergic rhinitis. Which medication
represents the correct answer as the preferred first-line choice for long-term
control of mild persistent asthma in this age group?
A. Daily low-dose inhaled corticosteroid (ICS)
B. Systemic oral prednisone burst for 5 days
C. Long-acting beta-agonist (LABA) monotherapy
D. Daily leukotriene receptor antagonist monotherapy
CORRECT ANSWER: A. Daily low-dose inhaled corticosteroid (ICS)
RATIONALE: For a 4-year-old child demonstrating signs of mild
persistent asthma (nocturnal coughing, exercise-induced wheezing), a daily
low-dose inhaled corticosteroid (ICS) is the gold-standard, first-line anti-
inflammatory controller therapy across all pediatric guidelines. Oral steroids
are used for acute exacerbations, not daily long-term control. LABA
monotherapy is strictly contraindicated because it increases the risk of
asthma-related death. Leukotriene receptor antagonists are alternative
second-line selections.
5. A 6-week-old male infant presents with non-bilious projectile vomiting
occurring immediately after feeding over the past week. The infant is hungry
and eager to feed again after vomiting. Palpation of the abdomen reveals a
firm, mobile, olive-sized mass in the right upper quadrant. What is the
correct answer for the initial diagnostic imaging modality of choice?
A. Abdominal radiograph series
B. Upper gastrointestinal contrast study
C. Abdominal ultrasound
D. Computed tomography scan of the abdomen
CORRECT ANSWER: C. Abdominal ultrasound
RATIONALE: The clinical presentation is highly indicative of
hypertrophic pyloric stenosis, which is characterized by projectile, non-
bilious emesis, a hungry infant, and a palpable olive-sized mass in the right
upper quadrant. The diagnostic imaging modality of choice is an abdominal
, ultrasound, which provides high-yield visualization of the thickened pyloric
muscle (>3 mm thickness) and elongated pyloric channel (>14 mm length)
safely without exposing the infant to radiation.
6. A 12-year-old female presents with a 3-month history of lower abdominal
pain associated with her menses that limits her school attendance. Pelvic
examination is normal, and a pregnancy test is negative. What is the correct
answer for the first-line pharmacologic treatment for primary
dysmenorrhea?
A. Combined oral contraceptive pills
B. Nonsteroidal anti-inflammatory drugs (NSAIDs) started at the onset
of menses or pain
C. Gonadotropin-releasing hormone agonists
D. High-dose depot medroxyprogesterone acetate
CORRECT ANSWER: B. Nonsteroidal anti-inflammatory drugs
(NSAIDs) started at the onset of menses or pain
RATIONALE: Primary dysmenorrhea is driven by excessive
endometrial prostaglandin production, which causes painful, ischemic
uterine contractions. The first-line therapeutic intervention is NSAID
therapy (such as ibuprofen or naproxen), which directly inhibits
prostaglandin synthesis. To achieve maximum efficacy, it should be initiated
at the onset of menses or anticipated pain and taken on a scheduled
baseline for the first 48 to 72 hours. Oral contraceptives are excellent
second-line treatments if NSAIDs fail.
7. A 3-year-old child is brought in with a 2-day history of honey-colored
crusted lesions on the face around the nares and mouth. The child is afebrile
and otherwise well. Which topical treatment represents the correct answer
for localized impetigo?
A. Topical mupirocin ointment applied three times daily
B. Topical high-potency betamethasone cream
C. Topical nystatin cream twice daily
D. Topical acyclovir ointment every 4 hours
CORRECT ANSWER: A. Topical mupirocin ointment applied three
times daily
RATIONALE: The client presents with classic non-bullous impetigo, an
Practitioner (PNP-PC) Primary Care Exam
Master Review Prep with Detailed Rationales
Course Code: NURS_402
Course Name: Certified Pediatric Nurse Practitioner - Primary Care (PNP-
PC) Review
Topic: Comprehensive Pediatric Development, Preventative Care, Acute
Care, and Chronic Management Bank
Academic Year: 2026/2027
1. A 9-month-old infant is brought to the clinic for a routine well-child check.
The mother expresses concern that the infant cannot yet wave bye-bye or say
"mama" and "dada" specifically. Developmental screening reveals the infant
sits unsupported, crawls on hands and knees, uses a crude pincer grasp, and
plays peek-a-boo. Which clinical action represents the correct answer?
A. Refer the infant immediately to early intervention for global
developmental delay.
B. Reassure the mother that these behaviors are expected
developmental milestones for a 9-month-old infant.
C. Order a diagnostic chromosomal microarray and metabolic panel.
D. Schedule a repeat developmental evaluation in 1 month.
CORRECT ANSWER: B. Reassure the mother that these behaviors are
expected developmental milestones for a 9-month-old infant.
RATIONALE: A 9-month-old infant sitting unsupported, crawling, using
a crude pincer grasp, and playing social games like peek-a-boo is meeting
appropriate developmental milestones. Specific words like "mama" or
"dada" and waving bye-bye typically emerge later, between 10 and 12
months of age. Immediate early intervention or expensive genetic panels are
unwarranted because the infant is progressing normally along the
development curve.
2. A 2-year-old child presents with a 3-day history of high fever, irritability,
and a bright red, maculopapular rash that started on the trunk and spread to
the face and extremities. The mother reports that the fever broke abruptly
, this morning just before the rash appeared. Which viral pathogen represents
the correct answer?
A. Human herpesvirus 6 (HHV-6)
B. Parvovirus B19
C. Coxsackievirus A16
D. Measles virus
CORRECT ANSWER: A. Human herpesvirus 6 (HHV-6)
RATIONALE: This scenario describes roseola infantum (exanthem
subitum), which is caused by human herpesvirus 6 (HHV-6). The classic
clinical presentation features a high fever (often >103°F) for 3 to 5 days that
resolves suddenly, followed immediately by the appearance of a blanching,
maculopapular rash starting on the trunk and extending outward. Parvovirus
B19 causes erythema infectiosum ("slapped-cheek" rash). Coxsackievirus
A16 causes hand-foot-and-mouth disease. Measles virus features a high
fever concurrent with a maculopapular rash, cough, coryza, and
conjunctivitis.
3. An 18-month-old toddler is evaluated for recurrent middle ear infections.
Physical examination reveals pearly gray tympanic membranes with no signs
of acute inflammation, but tympanometry shows a flat (Type B) curve
bilaterally with normal ear canal volume. The child passes an objective
behavioral audiometry screen. What is the correct answer for management?
A. Prescribe an immediate 10-day course of high-dose amoxicillin.
B. Recommend bilateral myringotomy tube placement today.
C. Monitor and reevaluate for persistent middle ear effusion in 3
months.
D. Initiate daily oral antihistamine and decongestant therapy.
CORRECT ANSWER: C. Monitor and reevaluate for persistent middle
ear effusion in 3 months.
RATIONALE: The client presents with otitis media with effusion
(OME), confirmed by a flat (Type B) tympanogram with normal volume
(ruling out an open perforation or patent tympanostomy tubes) and an
absence of acute inflammatory signs. Because the child passes a hearing
screen and lacks severe distress, clinical guidelines dictate watchful waiting
and reevaluation in 3 months from the date of diagnosis, as most effusions
resolve spontaneously. Antibiotics are for acute infections, and surgical
, tubes require chronic, unyielding fluid tracking with documented hearing
deficits.
4. A 4-year-old child is brought to the primary care clinic with a 2-week
history of a nocturnal cough and intermittent wheezing triggered by running
outside. The mother has a history of allergic rhinitis. Which medication
represents the correct answer as the preferred first-line choice for long-term
control of mild persistent asthma in this age group?
A. Daily low-dose inhaled corticosteroid (ICS)
B. Systemic oral prednisone burst for 5 days
C. Long-acting beta-agonist (LABA) monotherapy
D. Daily leukotriene receptor antagonist monotherapy
CORRECT ANSWER: A. Daily low-dose inhaled corticosteroid (ICS)
RATIONALE: For a 4-year-old child demonstrating signs of mild
persistent asthma (nocturnal coughing, exercise-induced wheezing), a daily
low-dose inhaled corticosteroid (ICS) is the gold-standard, first-line anti-
inflammatory controller therapy across all pediatric guidelines. Oral steroids
are used for acute exacerbations, not daily long-term control. LABA
monotherapy is strictly contraindicated because it increases the risk of
asthma-related death. Leukotriene receptor antagonists are alternative
second-line selections.
5. A 6-week-old male infant presents with non-bilious projectile vomiting
occurring immediately after feeding over the past week. The infant is hungry
and eager to feed again after vomiting. Palpation of the abdomen reveals a
firm, mobile, olive-sized mass in the right upper quadrant. What is the
correct answer for the initial diagnostic imaging modality of choice?
A. Abdominal radiograph series
B. Upper gastrointestinal contrast study
C. Abdominal ultrasound
D. Computed tomography scan of the abdomen
CORRECT ANSWER: C. Abdominal ultrasound
RATIONALE: The clinical presentation is highly indicative of
hypertrophic pyloric stenosis, which is characterized by projectile, non-
bilious emesis, a hungry infant, and a palpable olive-sized mass in the right
upper quadrant. The diagnostic imaging modality of choice is an abdominal
, ultrasound, which provides high-yield visualization of the thickened pyloric
muscle (>3 mm thickness) and elongated pyloric channel (>14 mm length)
safely without exposing the infant to radiation.
6. A 12-year-old female presents with a 3-month history of lower abdominal
pain associated with her menses that limits her school attendance. Pelvic
examination is normal, and a pregnancy test is negative. What is the correct
answer for the first-line pharmacologic treatment for primary
dysmenorrhea?
A. Combined oral contraceptive pills
B. Nonsteroidal anti-inflammatory drugs (NSAIDs) started at the onset
of menses or pain
C. Gonadotropin-releasing hormone agonists
D. High-dose depot medroxyprogesterone acetate
CORRECT ANSWER: B. Nonsteroidal anti-inflammatory drugs
(NSAIDs) started at the onset of menses or pain
RATIONALE: Primary dysmenorrhea is driven by excessive
endometrial prostaglandin production, which causes painful, ischemic
uterine contractions. The first-line therapeutic intervention is NSAID
therapy (such as ibuprofen or naproxen), which directly inhibits
prostaglandin synthesis. To achieve maximum efficacy, it should be initiated
at the onset of menses or anticipated pain and taken on a scheduled
baseline for the first 48 to 72 hours. Oral contraceptives are excellent
second-line treatments if NSAIDs fail.
7. A 3-year-old child is brought in with a 2-day history of honey-colored
crusted lesions on the face around the nares and mouth. The child is afebrile
and otherwise well. Which topical treatment represents the correct answer
for localized impetigo?
A. Topical mupirocin ointment applied three times daily
B. Topical high-potency betamethasone cream
C. Topical nystatin cream twice daily
D. Topical acyclovir ointment every 4 hours
CORRECT ANSWER: A. Topical mupirocin ointment applied three
times daily
RATIONALE: The client presents with classic non-bullous impetigo, an
