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Related Experiment Videos

Left ventricular function in patients with diabetes mellitus.

O Sasakawa, S Fujii, O Nogi

    Japanese Journal of Medicine
    |February 1, 1984
    PubMed
    Summary

    Diabetic patients show impaired left ventricular function, even without microangiopathy. Improved diabetes control can normalize cardiac function, suggesting proactive management prevents heart failure in diabetics.

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    Area of Science:

    • Cardiology
    • Endocrinology
    • Diabetology

    Background:

    • Diabetes mellitus is a significant risk factor for cardiovascular complications.
    • Subtle left ventricular (LV) dysfunction may precede clinically evident heart disease in diabetics.
    • Microangiopathy is a common complication of diabetes, potentially affecting cardiac function.

    Purpose of the Study:

    • To assess left ventricular function in diabetic patients without clinically evident heart disease.
    • To investigate the relationship between left ventricular function, microangiopathy, and diabetic control.
    • To determine if improved glycemic control can ameliorate cardiac dysfunction.

    Main Methods:

    • Non-invasive assessment of LV function using systolic time intervals and echocardiography.

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  • Evaluation of 70 diabetic patients under 60 years of age without known heart disease.
  • Comparison of cardiac function parameters (PEP/ET ratio, isovolumic relaxation time) between diabetics and controls.

    • Main Results:

    • The pre-ejection period to left ventricular ejection time (PEP/ET) ratio was significantly elevated in diabetics compared to controls, even in those without microangiopathy.
    • Diabetics with severe microangiopathy exhibited a markedly elevated PEP/ET ratio.
    • Isovolumic relaxation time was prolonged in diabetic patients compared to controls.
    • Improved diabetic control correlated with a trend toward normalization of PEP/ET values.

    Conclusions:

    • Abnormalities in left ventricular function in diabetics are associated with both the severity of microangiopathy and the state of glycemic control.
    • Maintaining adequate diabetic control appears crucial for preventing congestive heart failure in patients with diabetes mellitus.
    • Early detection and management of cardiac dysfunction in diabetics are essential.