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The asymptomatic newborn and risk of cerebral palsy
1Neuroepidemiology, Branche, National Institute of Neurological and Communicative Disorders and Stroke, Bethesda, MD 20892.
Insights
Full-term infants with birth complications but no newborn signs are not at higher risk for cerebral palsy (CP). Asymptomatic infants with or without birth complications had similar CP rates.
Area of Science:
- Neonatal care
- Pediatric neurology
- Obstetrics
Background:
- Birth complications can increase cerebral palsy (CP) risk.
- Identifying asymptomatic infants at risk is crucial for early intervention.
Purpose of the Study:
- To determine if full-term infants (over 2500g) with birth complications but no neonatal signs face increased cerebral palsy (CP) risk.
- To analyze the association between neonatal signs and CP risk in infants with and without birth complications.
Main Methods:
- Retrospective cohort study analyzing infants weighing over 2500g.
- Evaluation of 14 late pregnancy/birth complications and specific neonatal signs (activity, incubator need, feeding, suck, respiration, seizures).
- CP rates assessed up to 7 years of age.
Main Results:
- Over 90% of infants weighing over 2500g exhibited no assessed neonatal signs.
- Asymptomatic infants with birth complications had a CP rate of 2.3/1000; uncomplicated births had a rate of 2.4/1000.
- CP risk increased with the number and duration of abnormal neonatal signs.
Conclusions:
- Full-term infants with complicated births but no abnormal newborn signs are not at increased risk for cerebral palsy (CP).
- Neonatal signs, particularly sustained abnormalities, are significant predictors of CP risk.
- Most children diagnosed with CP did not originate from identified high-risk groups.
Abstract:
We investigated whether infants weighing over 2500 g who had experienced one or more of 14 late pregnancy or birth complications, but who were free of certain signs in the nursery period were at increased risk of cerebral palsy (CP). The signs evaluated were decreased activity after the first day of life, need for incubator care for three or more days, feeding problems, poor suck, respiratory difficulty, or neonatal seizures. More than 90% of the infants weighing over 2500 g had none of these signs. In asymptomatic infants with one or more birth complications, the rate of CP by 7 years of age was 2.3/1000; among asymptomatic infants whose births were uncomplicated, the rate of CP was 2.4/1000. The risk for CP rose with number of abnormal neonatal signs, and children with sustained neonatal abnormalities were at higher risk than those whose abnormalities were transient. Most children with CP did not derive from groups at increased risk. The full-term infant whose birth was complicated but who was free of certain abnormal signs in the newborn period was not at increased risk of CP.