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Flash visual evoked potentials in preterm infants.

Jing-Jing Feng1, Wei-Ping Wang1, Shu-Juan Guo1

  • 1Department of Child Health Care, Children's Hospital of Fudan University, Shanghai, China.

Ophthalmology
|November 27, 2012
PubMed
Summary
This summary is machine-generated.

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Flash visual evoked potentials (FVEPs) in preterm infants show similar maturation patterns to term infants. However, very low birth weight (VLBW) infants experience delayed visual electrophysiologic development up to 18 months.

Area of Science:

  • Neuroscience
  • Developmental Pediatrics
  • Ophthalmology

Background:

  • Preterm infants, especially those with very low birth weight (VLBW) and low birth weight (LBW), may experience altered visual system development.
  • Flash visual evoked potentials (FVEPs) are a valuable tool for assessing the functional maturation of the visual pathways in infants.

Purpose of the Study:

  • To characterize the developmental trajectory of FVEPs in preterm infants from 1 to 18 months corrected age.
  • To compare the FVEP maturation in preterm infants with that of term-born infants.

Main Methods:

  • A longitudinal follow-up study involving 20 VLBW, 42 LBW preterm infants, and 41 term infants.
  • FVEP recordings and neurodevelopmental assessments (using Development Screen Test and Bayley Scales) were conducted at 1, 3, 6, 9, 12, and 18 months of corrected age.

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  • Analysis focused on P2 amplitude and P2 wave latency of FVEPs.

    • Main Results:

    • The age-dependent decrease in FVEP P2 latency followed a similar pattern in preterm and term infants, with rapid decline in the first 6 months, gradual decline from 6-12 months, and steady reduction from 12-18 months.
    • VLBW infants exhibited significantly prolonged P2 latencies at all time points compared to controls.
    • LBW infants showed delayed P2 latencies at 1 and 3 months corrected age, with maturation becoming similar to controls by 3 months; however, VLBW infants' P2 latency maturation remained delayed until 18 months.

    Conclusions:

    • While the overall pattern of FVEP development is comparable between preterm and term infants, preterm infants, particularly VLBW infants, demonstrate deficits in visual electrophysiologic maturation.
    • These findings highlight potential long-term visual pathway development differences in preterm infants, especially those born with very low birth weight.