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[Determination of left ventricular function using nuclear medicine methods]

H Lichte

    Fortschritte Der Medizin
    |December 3, 1981
    PubMed
    Summary
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    ECG-gated blood-pool scintigraphy effectively assesses ventricular function. Exercise reveals myocardial ischemia through insufficient ejection fraction increase, while isosorbiddinitrate improves it.

    Area of Science:

    • Nuclear Medicine
    • Cardiology
    • Physiology

    Background:

    • ECG-gated blood-pool scintigraphy is crucial for evaluating global and regional ventricular function.
    • Assessing ejection fraction changes during exercise provides insights into myocardial health.

    Purpose of the Study:

    • To evaluate the utility of ECG-gated blood-pool scintigraphy in assessing ventricular function during rest and exercise.
    • To determine the impact of myocardial ischemia and isosorbiddinitrate on ejection fraction.

    Main Methods:

    • Utilized ECG-gated blood-pool scintigraphy with multiple gating acquisition.
    • Measured ejection fraction at rest and during exercise.
    • Assessed the effect of isosorbiddinitrate on ejection fraction.

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    Main Results:

    • Normal ventricular function shows an average ejection fraction increase of 13.4% during exercise.
    • A decreased or insufficient ejection fraction increase during exercise indicates myocardial ischemia.
    • Isosorbiddinitrate administration increased ejection fraction by approximately 7% for at least 12 hours.

    Conclusions:

    • ECG-gated blood-pool scintigraphy is a valuable tool for assessing ventricular function and detecting myocardial ischemia.
    • Exercise stress testing using this method can reveal functional cardiac abnormalities.
    • Isosorbiddinitrate demonstrates a sustained positive effect on ejection fraction.