Nuchal cord and neurodevelopmental performance at 1 year

Area of Science:

• Obstetrics and Gynecology
• Developmental Pediatrics
• Neonatal Health

Background:

• Nuchal cords are common findings during pregnancy.
• The impact of symptomatic nuchal cords on infant neurodevelopment remains unclear.
• Previous studies have not definitively established a link between nuchal cords and developmental outcomes.

Purpose of the Study:

• To investigate the association between symptomatic nuchal cords at delivery and neurodevelopmental performance at one year of age.
• To test the hypothesis that nuchal cords do not affect infant neurodevelopment.

Main Methods:

• A cohort of 190 infants with normal antenatal courses were assessed at one year using the Bayley Scales of Infant Development.
• Infants were grouped based on the presence of a symptomatic nuchal cord during labor (indicated by abnormal fetal heart rate or meconium).
• Analysis of variance was used to detect significant differences in neurodevelopmental scores between groups.

Main Results:

• A symptomatic nuchal cord was present in 24% of deliveries.
• Infants born with symptomatic nuchal cords showed significantly lower scores on both mental and psychomotor indices of the Bayley Scales at one year (P < .01).
• These neurodevelopmental deficits were more pronounced in cases with extreme cord tightness, multiple loops, or antenatal detection (P = .09).

Conclusions:

• The study refutes the null hypothesis, suggesting symptomatic nuchal cords are associated with a subclinical neurodevelopmental deficit.
• Specific nuchal cord characteristics, such as extreme tightness or multiple loops, may indicate a higher risk for adverse neurodevelopmental outcomes.
• Further research is warranted to understand the mechanisms underlying this association and to identify at-risk infants.