Free CPNP-PC sample questions

Correct answer: Brush the teeth twice daily using a smear (grain-of-rice size) of fluoridated toothpaste starting at tooth eruption until age 3 years

Current AAP and Bright Futures oral health guidelines recommend that caregivers brush a child's teeth twice daily (after breakfast and before bedtime) with fluoridated toothpaste as soon as the first primary tooth erupts. For children younger than 3 years of age, the proper age-based dosage is a smear or grain-of-rice-sized amount (approximately 0.1 mg of fluoride), which provides topical caries protection while minimizing the risk of fluorosis if swallowed. At age 3 through 6 years, the dosage increases to a pea-sized amount (approximately 0.25 mg of fluoride). Non-fluoridated toothpaste does not prevent early childhood caries, and systemic fluoride supplementation is reserved only for children aged 6 months and older whose primary drinking water source is deficient in fluoride (<0.6 ppm).

Correct answers: Avoid offering raw or cooked honey before 12 months of age due to the risk of Clostridium botulinum spore ingestion and infant botulism, and avoid whole cow's milk as a primary beverage until 12 months; Prioritize iron- and zinc-rich complementary foods, such as puréed meats or iron-fortified infant cereals, as prenatal hepatic iron stores become depleted around 6 months of age

Honey (both raw and pasteurized/cooked) must be strictly avoided before 12 months of age because the infant gastrointestinal tract lacks sufficient acidity and mature flora to inhibit Clostridium botulinum spore germination and toxin production. Whole cow's milk must also be avoided as a main drink before 12 months because it is low in bioavailable iron, presents a high renal solute load, and can induce occult gastrointestinal blood loss. Conversely, delaying allergenic foods (peanut, egg) increases allergy risk, and 100% fruit juice is not recommended before 12 months of age.

By 6 months of age, a full-term infant's endogenous transplacental iron stores are largely depleted, and human milk alone does not provide sufficient iron or zinc to meet rapid growth demands; therefore, introducing bioavailable iron- and zinc-rich foods (such as puréed meats or iron-fortified infant cereal) is a top nutritional priority.

Correct answer: Administer DTaP and Hib today, and defer MMR and varicella until 11 months after the 2 g/kg IVIG administration

According to the AAP Red Book and CDC Advisory Committee on Immunization Practices (ACIP) guidelines, high-dose intravenous immunoglobulin (IVIG, 2 g/kg) administered for Kawasaki disease contains circulating maternal/donor antibodies that neutralize live-attenuated parenteral viral vaccines (MMR and varicella), preventing adequate viral replication and protective seroconversion. Therefore, MMR and varicella vaccines must be deferred for 11 months following a 2 g/kg IVIG dose (unless a community measles outbreak warrants earlier vaccination followed by revaccination at >=11 months post-IVIG). Inactivated, toxoid, and conjugate vaccines (such as DTaP and Hib) are not significantly affected by circulating antibody and should be administered on schedule today.

Correct answer: Withhold further doses of any rotavirus vaccine permanently, and administer the scheduled 4-month doses of DTaP, IPV, Hib, and PCV today

A history of intussusception (regardless of whether it occurred following a previous rotavirus vaccine dose or spontaneously) is an absolute contraindication to the administration of any subsequent doses of rotavirus vaccine (both RV5 and RV1) because postlicensure surveillance demonstrates a small but statistically significant increased risk of intussusception, particularly within 1 to 21 days after the first or second dose. Switching between pentavalent and monovalent formulations is likewise contraindicated. However, the history of intussusception has no bearing on parenteral inactivated/conjugate vaccines, so the second doses of DTaP, IPV, Hib, and PCV should be administered on schedule.

Correct answer: Acknowledge her perspective, explain that the immune system produces significantly higher antibody titers when the series is initiated between ages 9 and 14—requiring only two doses spaced 6 to 12 months apart rather than three doses at age 15 or older—and strongly recommend starting the cancer-preventing series today long before any future exposure

When addressing vaccine hesitancy after an initial presumptive announcement, the PNP should use motivational interviewing principles: validate the parent's desire to protect their child, ask permission to share scientific information, and maintain a strong, unequivocal recommendation focused on cancer prevention (specifically oropharyngeal, anal, penile, and cervical cancers). Immunologically, preadolescents aged 9 to 14 years mount a substantially stronger geometric mean antibody titer response to the 9-valent HPV vaccine than older adolescents and young adults. Because of this robust immune response, immunocompetent patients who initiate the series before their 15th birthday require only a 2-dose schedule (administered at 0 and 6–12 months), whereas initiating the series at age 15 years or older requires a 3-dose schedule (0, 1–2, and 6 months). Furthermore, prophylactic HPV vaccination is most effective when completed well before any sexual contact occurs.

Correct answer: 6,000 and 8,000 Hz

The Bright Futures/AAP Periodicity Schedule explicitly specifies that adolescent hearing screening should be conducted with audiometry that includes high frequencies of 6,000 and 8,000 Hz once between 11 and 14 years, once between 15 and 17 years, and once between 18 and 21 years. Conventional childhood pure-tone screening (500, 1,000, 2,000, and 4,000 Hz) frequently misses early acoustic trauma from personal listening devices, concerts, firearms, or recreational noise, which characteristically manifests as a high-frequency sensorineural notch between 3,000 and 6,000 Hz with recovery or progression at 8,000 Hz.