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Left ventricular function in diabetes mellitus. II: Relation between clinical features and left ventricular function

L M Shapiro, B A Leatherdale, J Mackinnon

    British Heart Journal
    |February 1, 1981
    PubMed
    Summary
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    Diabetic heart muscle dysfunction is linked to microvascular complications and disease duration. Severe complications indicate a higher risk of diabetic cardiomyopathy.

    Area of Science:

    • Cardiology
    • Endocrinology
    • Diabetology

    Background:

    • Diabetes mellitus is associated with cardiovascular complications.
    • Microvascular complications are common in long-standing diabetes.
    • Left ventricular dysfunction can occur in diabetics even without diagnosed heart disease.

    Purpose of the Study:

    • To investigate the relationship between left ventricular function and microvascular complications in patients with established diabetes.
    • To determine if diabetes duration and severity of complications correlate with specific measures of cardiac function.

    Main Methods:

    • Echocardiographic assessment of left ventricular function in 185 diabetic patients without clinical heart disease.
    • Correlation analysis between diabetes duration, microvascular complication severity index, and diastolic/systolic time intervals.

    Related Experiment Videos

  • Comparison of cardiac function variables between diabetic subgroups (mild vs. severe complications) and healthy controls.

    • Main Results:

    • A significant correlation was found between diabetes duration and specific left ventricular diastolic and systolic time intervals in younger insulin-dependent diabetics.
    • Diabetics with severe microvascular complications exhibited significantly impaired left ventricular function compared to those with mild complications and controls.
    • Left ventricular function abnormalities, including prolonged isovolumic relaxation time and altered ejection time ratios, were closely related to a microvascular complication index.

    Conclusions:

    • Abnormalities in left ventricular function in diabetes are associated with both the duration of the disease and the presence/severity of microvascular complications.
    • A distinct diabetic heart muscle disorder frequently occurs in patients with severe microvascular complications.
    • Early detection and management of microvascular complications may be crucial for preserving cardiac function in diabetic patients.