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Obesity and cardiac function

O de Divitiis, S Fazio, M Petitto

    Circulation
    |September 1, 1981
    PubMed
    Summary
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    Obesity impairs heart function in young adults, even without other health issues. Left ventricular function declines with increasing body weight, indicating early cardiac changes in obese individuals.

    Area of Science:

    • Cardiology
    • Physiology
    • Obesity Research

    Background:

    • Obesity is a growing public health concern associated with cardiovascular complications.
    • Understanding the early cardiac effects of obesity is crucial for preventative strategies.

    Purpose of the Study:

    • To investigate left ventricular (LV) function in obese individuals without comorbidities.
    • To determine the relationship between the degree of obesity and cardiac performance.

    Main Methods:

    • Right- and left-heart catheterization was performed on 10 obese volunteers.
    • Cardiac output, stroke volume, ventricular pressures, and LV function indices were measured.

    Main Results:

    • Obese subjects exhibited high cardiac output and stroke volume, correlating with increased oxygen consumption and obesity.

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  • Reduced left ventricular (LV) compliance and impaired LV function were observed, particularly in the heaviest individuals.
  • LV function indices like Vmax and stroke work index correlated negatively with the degree of obesity.

    • Conclusions:

    • Depressed LV function is present in young obese individuals, even without apparent heart disease or other health issues.
    • The severity of cardiac impairment appears to be directly related to the degree of obesity.