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Related Experiment Videos

Cognitive function during hypoglycaemia in type I diabetes mellitus.

S Pramming, B Thorsteinsson, A Theilgaard

    British Medical Journal (Clinical Research Ed.)
    |March 8, 1986
    PubMed
    Summary

    Type 1 diabetes patients may experience declines in cognitive function during low blood glucose (hypoglycemia) episodes. These neuropsychological deficits can occur even without noticeable symptoms, impacting skills like time perception.

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    Asymptomatic hypoglycaemia in Type 1 diabetes: incidence and risk factors.

    Diabetic medicine : a journal of the British Diabetic Association·2018

    Area of Science:

    • Neuroscience
    • Endocrinology
    • Psychology

    Background:

    • Type 1 diabetes requires careful blood glucose management.
    • Hypoglycemia, or low blood glucose, can have various effects on cognitive function.
    • Asymptomatic hypoglycemia poses a diagnostic challenge.

    Purpose of the Study:

    • To investigate the impact of varying blood glucose levels on neuropsychological performance in men with type 1 diabetes.
    • To assess cognitive function during both symptomatic and asymptomatic hypoglycemia.

    Main Methods:

    • Neuropsychological testing was conducted on 16 male patients with type 1 diabetes.
    • Blood glucose levels were manipulated via intravenous insulin and glucose infusions to achieve specific concentrations.
    • Cognitive performance was assessed at four distinct blood glucose levels.

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    Main Results:

    • Total neuropsychological test scores significantly decreased as blood glucose levels dropped from normal to hypoglycemic ranges (p < 0.02).
    • Cognitive function improved when blood glucose was restored to normal levels.
    • Patients showed impaired time perception during hypoglycemia, underestimating elapsed time (p < 0.05).
    • Hypoglycemia was often asymptomatic, with most patients not reporting symptoms despite low blood glucose.

    Conclusions:

    • Type 1 diabetes patients can exhibit neuropsychological skill deterioration during asymptomatic hypoglycemia.
    • Cognitive deficits during low blood glucose may not be accompanied by subjective awareness of symptoms.
    • Maintaining optimal blood glucose control is crucial for preserving cognitive function in type 1 diabetes.