Small Babies

An infant is considered a “small baby” if they:

  • Were born less than or equal to 31 weeks, 6 days gestation, OR
  • Had a birthweight ≤ 1,500 grams

All small babies are eligible for entry into the NICU Database, regardless of whether they were born at your hospital (“inborn”) or were born at a different hospital (“outborn”) but were acutely transferred to your hospital for care by any service (not just the NICU), as long as the transfer occurred before the baby’s 28th day of life.

Big Babies

Several factors determine whether “big babies,” or those with birth weights > 1,500 grams, are eligible for entry into the database. They must either have been born at your hospital or have been transferred in within 28 days of their birth. In addition, they must have been admitted into the NICU or cared for by the NICU service team and meet one of the following criteria:

  1. Death
  2. Acute transport into your NICU
  3. Acute transport out of your NICU
  4. Noninvasive ventilation (Nasal IMV or SIMV or any other form of non-intubated assisted ventilation) for more than four continuous hours
  5. Intubated assisted ventilation for greater than four continuous hours
  6. Early bacterial sepsis
  7. Major surgery requiring anesthesia
  8. Previously discharged home and then readmitted for a total serum bilirubin of greater than or equal to 25 mg/dl (427 micromols/liter) and/or exchange transfusion. Babies readmitted for hyperbilirubinemia are eligible whether they are readmitted directly to the NICU or elsewhere in the hospital.
  9. Suspected encephalopathy or perinatal asphyxia
  10. Active therapeutic hypothermia
  11. Seizures (Babies born in 2019 or later)


Confused? Use the attached flow-chart PDF below to determine if a baby is eligible for entry into the NICU Database.