Neonatal hyperglycaemia is associated with worse neurodevelopmental outcomes in extremely preterm infants

Itay Zamir1, Elisabeth Stoltz Sjöström2, Fredrik Ahlsson3

  • 1Department of Clinical Sciences, Pediatrics, Umeå University, Umeå, Sweden itay.zamir@umu.se.

Insights

Neonatal hyperglycemia in extremely preterm infants is linked to poorer long-term cognitive and motor outcomes. Insulin treatment did not impact these neurodevelopmental results, highlighting the need for further research.

Area of Science:

  • Neonatalogy
  • Pediatric Neurology
  • Developmental Pediatrics

Background:

  • Extremely preterm infants (<27 weeks gestation) face significant neurodevelopmental challenges.
  • Neonatal hyperglycemia is a common complication in this vulnerable population.

Purpose of the Study:

  • To investigate the association between neonatal hyperglycemia and long-term neurodevelopmental outcomes in extremely preterm infants.
  • To evaluate the impact of insulin treatment on these outcomes.

Main Methods:

  • An observational national cohort study (Extremely Preterm Infants in Sweden Study) included 533 infants born <27 weeks gestation.
  • Neurodevelopmental assessments, including cognitive (WISC-IV) and motor (MABC-2) functions, were performed at 6.5 years of age for 436 survivors.

Main Results:

  • Each day of neonatal hyperglycemia (>8 mmol/L) was associated with a decrease in Full Scale Intelligence Quotient (FSIQ) and Movement Assessment Battery for Children 2 (MABC-2) total scores.
  • Persistent hyperglycemia (≥3 consecutive days) correlated with significantly lower MABC-2 scores.
  • Insulin treatment showed no association with any assessed neurodevelopmental outcomes.

Conclusions:

  • Neonatal hyperglycemia is a significant risk factor for impaired cognitive and motor development in extremely preterm children.
  • Current insulin treatment strategies do not appear to mitigate these adverse neurodevelopmental effects.
  • Further randomized controlled trials are essential to determine optimal management of neonatal hyperglycemia in extremely preterm infants.
Abstract

Related Concept Videos

Pathophysiology of Diabetes01:20

Pathophysiology of Diabetes

Diabetes mellitus is a chronic metabolic disorder characterized by hyperglycemia. The four categories of diabetes are type 1 diabetes, type 2 diabetes, other specific types of diabetes, and gestational diabetes.
Type 1 diabetes is characterized by autoimmune-mediated destruction of pancreatic β cells, with environmental factors potentially triggering this process in genetically susceptible individuals. Despite many not having a family history, certain genes increase susceptibility,...
2.3K
Diabetes Mellitus: Type 2 and Gestational01:22

Diabetes Mellitus: Type 2 and Gestational

Type 2 diabetes, characterized by insulin resistance, arises when the insulin receptors on cells lose responsiveness to insulin, diminishing the cell's capacity to take up glucose, resulting in elevated blood glucose levels. To receive a diagnosis of Type 2 diabetes, a series of blood glucose tests are necessary to assess whether the blood glucose falls within normal parameters. If the result is out of the normal range, a patient may be diagnosed as prediabetic or diabetic, depending on the...
3.7K
Hypoglycemia and Glucagon01:15

Hypoglycemia and Glucagon

Without prolonged fasting, healthy individuals maintain blood glucose levels above 3.5 mM due to a well-adapted neuroendocrine counterregulatory system that effectively prevents acute hypoglycemia, a potentially life-threatening condition. The primary clinical scenarios for hypoglycemia encompass diabetes treatment, inappropriate production of endogenous insulin or insulin-like substances by tumors, and the use of glucose-lowering agents in non-diabetic individuals. Notably, hypoglycemia in the...
511
Inborn Errors of Metabolism01:20

Inborn Errors of Metabolism

Phenylketonuria (PKU) is a protein metabolism disorder characterized by high blood levels of the amino acid phenylalanine. This results from a mutation in the gene responsible for phenylalanine hydroxylase, an enzyme that converts phenylalanine into tyrosine. When this enzyme is deficient, phenylalanine builds up in the blood, leading to symptoms such as vomiting, rashes, seizures, growth deficiency, and severe mental retardation. An early diagnosis and a diet restricting phenylalanine intake...
488
Diabetes Mellitus: Overview and Type I Subtype01:22

Diabetes Mellitus: Overview and Type I Subtype

Diabetes mellitus is a chronic metabolic disorder characterized by high blood glucose levels due to inadequate insulin production, insulin resistance, or both. The condition affects millions worldwide and can significantly impact their health and quality of life.
Type 1 diabetes is an autoimmune disease in which the immune system mistakenly attacks and destroys the insulin-producing beta cells in the pancreas. As a result, the body is unable to produce sufficient insulin, and individuals with...
4.2K
Pharmacokinetics in Pediatric Patients: Drug Metabolism01:24

Pharmacokinetics in Pediatric Patients: Drug Metabolism

In pediatric care, understanding the nuances of hepatic drug metabolism is crucial, as it significantly differs from that of adults. This divergence is primarily due to the developmental stage of drug-metabolizing enzymes, which affects how medications are processed in the body. In neonates, for instance, the activity of Phase I enzymes—critical for the initial breakdown of drugs—is markedly reduced, functioning at just 20–40% of the levels seen in adults. This reduction poses...
71