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Pulmonary function in young insulin-dependent diabetic subjects.

M Sandler, A E Bunn, R I Stewart

    Chest
    |November 1, 1986
    PubMed
    Summary

    Pulmonary dysfunction, including abnormal lung mechanics and reduced capillary blood volume, is an early complication in young patients with insulin-dependent diabetes mellitus. These lung function changes are measurable even without significant systemic complications.

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    Area of Science:

    • Pulmonary Medicine
    • Endocrinology
    • Diabetology

    Background:

    • Diabetes mellitus is associated with various complications, but pulmonary involvement is not well-characterized.
    • Early detection of pulmonary dysfunction in diabetic patients is crucial for timely intervention.

    Purpose of the Study:

    • To investigate lung mechanics and carbon monoxide (CO) transfer in young, insulin-dependent diabetic patients.
    • To determine if pulmonary dysfunction is an early measurable complication of diabetes mellitus.

    Main Methods:

    • Compared lung function parameters, including closing capacity/total lung capacity (CC/TLC) and lung elasticity (Kst(L)), between 22 diabetic patients and 22 healthy controls.
    • Assessed the transfer factor per unit alveolar volume (TL/VA) and pulmonary capillary blood volume.

    Main Results:

    • Diabetic patients showed significantly greater CC/TLC and Kst(L) compared to controls.
    • TL/VA was significantly lower in diabetics, suggesting reduced pulmonary capillary blood volume.
    • 73% of diabetic patients exhibited abnormal lung mechanics or decreased pulmonary capillary blood volume.

    Conclusions:

    • Pulmonary dysfunction, characterized by altered lung mechanics and reduced pulmonary capillary blood volume, is an early complication in insulin-dependent diabetes mellitus.
    • These findings highlight the importance of assessing lung function in diabetic patients, even in the absence of overt systemic complications.

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