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Neurocognitive functioning in children with type-1 diabetes with and without episodes of severe hypoglycaemia

Riitta Hannonen1, Sarimari Tupola, Timo Ahonen

  • 1Department of Child Neurology, Kymenlaakso Central Hospital, Kotka, Finland. riitta.hannonen@kolumbus.fi

Developmental Medicine and Child Neurology
|March 22, 2003
PubMed

Insights

Severe hypoglycemia in children with type-1 diabetes may lead to cognitive impairments, particularly affecting verbal short-term memory and phonological processing. This risk factor impacts learning and necessitates further investigation into auditory-verbal deficits.

Area of Science:

  • Pediatric Endocrinology
  • Neuropsychology
  • Child Psychology

Background:

  • Recurrent severe hypoglycemia is a potential cause of cognitive impairment in children with type-1 diabetes.
  • Previous research findings are controversial due to sample heterogeneity and limited neuropsychological assessments.

Purpose of the Study:

  • To evaluate the impact of type-1 diabetes and severe hypoglycemia on children's neurocognitive functioning.
  • To utilize a standardized, comprehensive neuropsychological test battery for accurate assessment.

Main Methods:

  • A cohort of 31 children (5-11 years) including those with type-1 diabetes and severe hypoglycemia, type-1 diabetes without severe hypoglycemia, and healthy controls.
  • Neuropsychological assessment using the Wechsler Intelligence Scale for Children-Revised (WISC-R) and the NEPSY battery.
  • NEPSY assessed attention, executive functions, language, sensorimotor, visuospatial processing, learning, and memory.

Main Results:

  • Children with a history of severe hypoglycemia exhibited more neuropsychological impairments and learning difficulties.
  • These children required more part-time special education support.
  • Significant deficits were observed in verbal short-term memory and phonological processing.

Conclusions:

  • Severe hypoglycemia is identified as a significant risk factor for learning difficulties in children with type-1 diabetes.
  • Auditory-verbal functioning deficits are linked to these learning challenges.
  • Findings underscore the importance of managing hypoglycemia to preserve cognitive function.

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