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Zorluk: ZorPreventive Care and Immunizations

Parents bring their 15-month-old son to a new pediatric clinic for a health maintenance examination. The family recently relocated from another state, which caused them to miss the child's standard 12-month evaluation. A review of his electronic medical record confirms he received all age-appropriate immunizations through his 6-month well-child visit. At 13 months of age, he experienced a generalized tonic-clonic convulsion lasting 2 minutes during an episode of high fever associated with roseola infantum. His 4-year-old sister also had a history of seizures with high fevers as an infant. Currently, the boy is healthy and takes no daily medications. Developmentally, he walks independently, stoops to pick up objects without losing his balance, points to items he wants, and uses three specific words consistently in addition to "mama" and "dada". Vital signs and physical examination are unremarkable. The physician is preparing to order catch-up vaccines, including those for measles, mumps, rubella (MMR), varicella, and seasonal influenza.

Which of the following is the most appropriate approach to this patient's preventive care today?

  1. Administer the MMR and varicella vaccines as separate injectionsCevap
  2. B
    Administer the combined measles, mumps, rubella, and varicella (MMRV) vaccine
  3. C
    Administer the MMR vaccine today and defer the varicella vaccine for two weeks
  4. D
    Administer the intranasal live-attenuated influenza vaccine (LAIV) along with the other required vaccines
  5. E
    Defer all vaccinations today and refer the patient for a comprehensive developmental evaluation

Cevap

The most appropriate approach is to administer the measles, mumps, and rubella (MMR) vaccine and the varicella vaccine as separate injections.
For the first dose of measles, mumps, rubella, and varicella vaccination at age 12-47 months, the combined MMRV vaccine is generally an acceptable option. However, the MMRV vaccine is associated with a slightly higher risk of febrile seizures occurring 5-12 days after vaccination when compared to administering the MMR and varicella vaccines separately. Because this patient has a personal and family history of febrile seizures, the combined MMRV vaccine should be avoided. The most appropriate approach is to administer the MMR and varicella vaccines as separate injections at different anatomic sites on the same day.

Adım Adım Çözüm

1
Assess the patient's developmental milestones.
Walking independently, stooping and recovering, pointing, and using 3+ words are all normal developmental milestones for a 15-month-old infant.
To rule out developmental delay that might require immediate referral or alter routine care.
2
Evaluate the patient's seizure history.
The patient had a simple febrile seizure at 13 months and has a positive family history of febrile seizures.
To identify any precautions or contraindications to specific vaccine formulations.
3
Determine the appropriate formulation and timing for the live-attenuated vaccines.
The MMR and varicella vaccines should be given as separate injections on the same day rather than as the combined MMRV vaccine.
The combined MMRV vaccine has a higher risk of precipitating a febrile seizure in children aged 12-47 months compared to separate injections, and a seizure history is a precaution against its use.

Anahtar Kavram

In children aged 12 to 47 months with a personal or family history of seizures, the first dose of measles, mumps, rubella, and varicella should be administered as separate MMR and varicella injections rather than the combined MMRV vaccine to minimize the risk of febrile seizures.
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Preventive Care and Immunizations

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