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Birth weight is the most important predictor of abnormal retinal vascularisation in moderately preterm infants

K Allvin1, A Hellström, J Dahlgren

  • 1Gothenburg Pediatric Growth Research Center (GP-GRC), Institute of Clinical Sciences, Sahlgrenska Academy at the University of Gothenburg and The Queen Silvia Children's Hospital, Gothenburg, Sweden.

Acta Paediatrica (Oslo, Norway : 1992)
|February 18, 2014
PubMed

Insights

Lower birth weight in preterm infants is a key predictor of abnormal retinal vascularization, even without retinopathy of prematurity risk factors. This finding highlights the importance of monitoring growth parameters in neonates.

Area of Science:

  • Ophthalmology
  • Neonatology
  • Developmental Biology

Background:

  • Retinopathy of prematurity (ROP) is a leading cause of childhood blindness.
  • Early identification of risk factors for abnormal retinal vascularization is crucial for timely intervention.
  • Moderately to late preterm infants without typical ROP risk factors may still exhibit vascular anomalies.

Purpose of the Study:

  • To identify predictors of abnormal retinal vascularization in preterm infants.
  • To investigate the relationship between neonatal characteristics and retinal vessel morphology.
  • To assess the role of Insulin-like Growth Factor-I (IGF-I) in retinal vascular development.

Main Methods:

  • Seventy-eight preterm infants (32 0/7 to 36 6/7 weeks gestational age) were studied.
  • Retinal vessel morphology was assessed at a mean postnatal age of 7 days.
  • Umbilical cord blood samples were analyzed for Insulin-like Growth Factor-I (IGF-I) levels.

Main Results:

  • 27% of infants exhibited abnormal retinal vascularization.
  • Lower birth weight, shorter birth length, smaller head circumference, and lower gestational age were associated with abnormal vascularization.
  • Significantly lower IGF-I levels were found in infants with abnormal retinal vessels.
  • Higher rates of being small for gestational age and maternal hypertension/preeclampsia were observed in this group.
  • Birth weight emerged as the strongest predictor of abnormal retinal vascularization.

Conclusions:

  • Birth weight is a significant predictor of abnormal retinal vascularization in moderately to late preterm infants.
  • Neonatal growth parameters and IGF-I levels may play a role in retinal vascular development.
  • Further research is warranted to understand the mechanisms underlying these associations.
Abstract

Keywords:
Birth sizeInsulin-like growth factor-IPre-eclampsiaRetinal vascularisationSmall for gestational age

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