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Zorluk: ZorPreventive Care and Immunizations

A male infant, born at 26 weeks gestation, is currently 8 weeks old (chronological age) and remains hospitalized in the neonatal intensive care unit (NICU). He has a history of respiratory distress syndrome and is currently receiving supplemental oxygen via high-flow nasal cannula for bronchopulmonary dysplasia. His weight today is 2.2 kg (4.8 lb), appropriately increased from a birth weight of 850 g. The mother's prenatal screening was negative for hepatitis B surface antigen. The infant received his first dose of the hepatitis B vaccine at 30 days of life. He is clinically stable, afebrile, and feeding well via a nasogastric tube. The medical team is planning his routine immunizations for his 8-week chronological milestone. Which of the following is the most appropriate immunization strategy for this patient today?

  1. Administer diphtheria-tetanus-acellular pertussis, Haemophilus influenzae type b, inactivated poliovirus, and pneumococcal conjugate vaccines; defer the rotavirus vaccineCevap
  2. B
    Administer diphtheria-tetanus-acellular pertussis, Haemophilus influenzae type b, inactivated poliovirus, pneumococcal conjugate, and rotavirus vaccines
  3. C
    Postpone all immunizations until the infant reaches 2 months of corrected gestational age
  4. D
    Administer palivizumab for RSV prophylaxis only and delay all standard infant vaccines until hospital discharge
  5. E
    Withhold all immunizations until the infant demonstrates a sustained weight gain to at least 3.0 kg

Cevap

The correct strategy is to administer the routine inactivated vaccines (DTaP, Hib, IPV, PCV) based on chronological age, but defer the rotavirus vaccine until discharge.
The correct strategy involves adhering to the chronological age schedule for all inactivated vaccines (DTaP, Hib, IPV, and PCV) while specifically deferring the rotavirus vaccine. Premature infants should be immunized on the same chronological schedule as full-term infants. However, the rotavirus vaccine is a live-attenuated oral vaccine that replicates in the infant's gastrointestinal tract and is shed in the stool. Because of the risk of nosocomial transmission to other critically ill and immunologically immature infants, the American Academy of Pediatrics strongly recommends deferring the rotavirus vaccine until the infant is discharged from the NICU. If the infant remains hospitalized beyond 15 weeks and 0 days of age, the window for the first dose closes, and the rotavirus series cannot be initiated.

Adım Adım Çözüm

1
Determine the appropriate age metric for vaccinating premature infants.
Vaccines are administered based on chronological age (8 weeks), not corrected gestational age.
Premature infants have immune systems capable of responding to vaccines and are at high risk for complications from vaccine-preventable diseases.
2
Identify the standard vaccines due at 2 months (8 weeks) of age.
The 2-month schedule includes DTaP, Hib, IPV, PCV, rotavirus, and the second dose of Hepatitis B.
These form the core of the primary infant immunization series.
3
Evaluate for any contraindications specific to the patient's current setting (NICU).
The rotavirus vaccine must be deferred because the infant is still hospitalized in the NICU.
Rotavirus is a live-attenuated oral vaccine that is shed in the stool. In a NICU setting, this poses a severe risk of nosocomial transmission to other immunocompromised or critically ill premature infants.

Anahtar Kavram

Premature infants receive routine immunizations at their chronological age, with the notable exception that the live-attenuated rotavirus vaccine is deferred while they remain hospitalized in the NICU to prevent viral shedding and nosocomial spread.
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Preventive Care and Immunizations

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