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Most infants admitted to neonatal intensive care units (NICUs) are full-term, with many having mild conditions. These findings suggest potential for care in less intensive settings for some neonates.

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Area of Science:

  • Neonatal care
  • Pediatric health outcomes
  • Healthcare utilization

Background:

  • Neonatal intensive care units (NICUs) provide critical care for vulnerable newborns.
  • Understanding the characteristics of infants admitted to NICUs is essential for resource allocation and care planning.
  • Previous studies have highlighted the increasing burden on NICU resources.

Purpose of the Study:

  • To characterize infants admitted to US NICUs.
  • To analyze trends in NICU admissions based on gestational age, birthweight, and condition severity.
  • To assess the proportion of NICU admissions that could potentially be managed in alternative settings.

Main Methods:

  • Utilized linked birth certificate and hospital discharge data from 2006-2014 for potentially viable deliveries in Pennsylvania and South Carolina.
  • Identified NICU admissions using revenue codes.
  • Categorized NICU-admitted infants by gestational age (GA), birthweight, and condition severity (for GA 35+ weeks), and analyzed total patient days and trends.

Main Results:

  • 12% of all infants were admitted to a NICU.
  • Infants with GA < 32 weeks accounted for 13.6% of admissions but 45.3% of total NICU days.
  • Infants with GA 37+ weeks constituted 50.4% of admissions, with 20% of all NICU admissions being for infants 35+ weeks with mild conditions. NICU admissions increased from 11.2% in 2006 to 13.0% in 2014.

Conclusions:

  • The majority of NICU admissions are for infants with gestational age 35 weeks and above.
  • A significant proportion of these admissions are for neonates with mild conditions.
  • These findings suggest that some infants currently admitted to NICUs could potentially be cared for in well-baby units, optimizing resource utilization.