Clinical presentation and memory function in youth with type 1 diabetes

Area of Science:

• Pediatric Endocrinology
• Neuropsychology
• Metabolic Disorders

Background:

• Type 1 diabetes (T1DM) diagnosis can involve acute complications like cerebral edema and diabetic ketoacidosis (DKA).
• The long-term cognitive effects of T1DM clinical presentation at diagnosis are not well understood.

Purpose of the Study:

• To investigate the relationship between clinical factors at diagnosis (hyperglycemia, DKA) and cognitive outcomes in children with T1DM.
• To compare cognitive function in children with T1DM to their siblings without T1DM.

Main Methods:

• Cognitive testing (intelligence, processing speed, memory) was conducted on 66 children with T1DM and 33 sibling controls within 3.5 months of diagnosis.
• Medical records were reviewed for hemoglobin A1c (HbA1c) and DKA status at diagnosis.
• A spatial delayed response (SDR) task assessed long-delay spatial memory.

Main Results:

• Children with T1DM who had DKA at diagnosis performed worse on the SDR task compared to controls (p=0.006).
• Higher HbA1c levels at diagnosis correlated with poorer SDR task performance in children with T1DM (p=0.027).
• No significant differences were found in other cognitive tests between groups.

Conclusions:

• DKA and degree of hyperglycemia at T1DM diagnosis impact long-delay spatial memory function within months.
• Early T1DM detection may mitigate risks of prolonged hyperglycemia and DKA, potentially preventing adverse effects on memory.