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Assessment and Evaluation of the High Risk Neonate: The NICU Network Neurobehavioral Scale
Published on: August 25, 2014
Does a triplet birth pose a special risk for infant development? Assessing cognitive development in relation to
Ruth Feldman1, Arthur I Eidelman
1Department of Psychology and the Gonda Brain Sciences Center, Bar-Ilan University, Ramat-Gan, Israel, and Child Study Center, Yale University, New Haven, Connecticut, USA. feldman@mail.biu.ac.il
Insights
Triplet births pose a risk to infant cognitive development and the mother-infant relationship. Infants born in triplets showed cognitive delays, especially those with weight discordance, highlighting the challenges of sensitive mothering.
Area of Science:
- Neonatal development
- Maternal-infant bonding
- Multiple birth outcomes
Background:
- Multiple births, including triplets, present unique challenges for infant development and maternal caregiving.
- Previous research has not fully elucidated the specific risks associated with triplet births on cognitive competencies and mother-infant relationships.
Purpose of the Study:
- To determine if triplet birth itself increases risks for infant cognitive development.
- To assess the impact of triplet birth on the quality of the mother-infant relationship.
Main Methods:
- Matched cohort study comparing 23 sets of triplets with 23 sets of twins and 23 singletons (n=138).
- Exclusion of infants with significant perinatal complications.
- Assessment of mother-infant interaction and infant cognitive development (Bayley II test) at 6, 12, and 24 months.
Main Results:
- Mothers of triplets showed lower sensitivity, and triplet infants exhibited less social involvement compared to singletons and twins.
- Triplet infants scored lower on the Bayley Mental Developmental Index at all assessment points.
- Infants with significant weight discordance (>15%) within triplet sets had poorer cognitive skills and received lower maternal sensitivity scores.
Conclusions:
- Triplet birth is associated with an increased risk of cognitive delays in early childhood.
- Infants with weight discordance in triplet sets are at particularly high risk.
- Challenges in providing sensitive maternal care to multiple infants simultaneously contribute to developmental risks.
Objective:
To examine whether a triplet birth per se poses a risk to the development of infants' cognitive competencies and to the mother-infant relationship.
Methods:
Twenty-three sets of triplets were matched with 23 sets of twins and 23 singleton infants (n = 138) with respect to gestational age, birth weight, and medical and demographic features. Infants with perinatal asphyxia, intraventricular hemorrhage of grade 3 or 4, periventricular leukomalacia, or central nervous system infection were excluded from the study. At 6, 12, and 24 months of age, mother-infant interaction was observed and infants' cognitive development was tested with the Bayley II test.
Results:
Mothers of triplets displayed lower levels of sensitivity at 6, 12, and 24 months and infants were less socially involved at 6 and 24 months, compared with singletons and twins. Triplets scored lower than singletons and twins on the Bayley Mental Developmental Index at 6, 12, and 24 months. A weight discordance of >15% was found for 15 triplet sets (65.2%). The discordant triplets showed decreased cognitive skills at 12 and 24 months, compared with their siblings, and received the lowest scores for maternal sensitivity. Hierarchical multivariate regression analysis revealed that greater medical risk at birth, multiple-birth status, lower maternal sensitivity, and reduced infant social involvement in the first 2 years were each predictive of lower cognitive outcomes at 2 years (R2 = 0.33).
Conclusions:
Triplets appear to be at higher risk for cognitive delays in the first 2 years of life, and discordant infants are at especially high risk. This delay is related in part to the difficulty of providing sensitive mothering to 3 infants at the same time. The findings may assist practitioners in guiding prenatal and postpartum parental care and management.
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