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Neurodevelopmental profile of Down syndrome in Chinese children

K L Kwong1, V Wong

  • 1University Department of Paediatrics, Queen Mary Hospital, Hong Kong.

Journal of Paediatrics and Child Health
|April 1, 1996
PubMed

Insights

Chinese children with Down syndrome (DS) show similar intellectual disabilities but fewer epilepsy cases compared to other races. Hearing impairment is common, with developmental quotients declining after age five.

Area of Science:

  • Pediatrics
  • Genetics
  • Developmental Neuroscience

Background:

  • Down syndrome (DS) is a genetic disorder associated with intellectual disability and various health complications.
  • Understanding racial variations in DS clinical features and outcomes is crucial for tailored healthcare.
  • Neurodevelopmental outcomes and comorbidities in DS require ongoing investigation across diverse populations.

Purpose of the Study:

  • To evaluate the clinical characteristics of Down syndrome in Chinese children.
  • To assess the neurodevelopmental trajectory and common complications in this cohort.
  • To compare the clinical presentation and outcomes of DS in Chinese children with those of other racial groups.

Main Methods:

  • Retrospective review of medical records for 124 Chinese children diagnosed with Down syndrome.
  • Data collected from the Child Assessment Centre between 1985 and 1993.
  • Analysis focused on clinical features, neurodevelopmental quotients (DQ), epilepsy, and hearing impairment.

Main Results:

  • Microcephaly was present in 31% of patients.
  • Developmental quotients (DQ) above 50 were observed in 85% of infants under one year, decreasing to 29% after age five.
  • Epilepsy occurred in only 1.6% of cases (infantile spasms and Lennox-Gastaut syndrome).
  • Hearing impairment affected 45% of children, with mild conductive hearing loss being most prevalent.

Conclusions:

  • Chinese children with Down syndrome exhibit comparable intellectual disability levels to other racial groups.
  • The incidence of epilepsy appears lower in Chinese children with DS compared to other populations.
  • Hearing impairment is a significant comorbidity, necessitating early detection and management.
Abstract

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