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Related Experiment Videos

Hydration before cardiopulmonary bypass

G Ohqvist, G Settergren

    Acta Anaesthesiologica Scandinavica
    |December 1, 1982
    PubMed
    Summary
    This summary is machine-generated.

    Moderate fluid administration (3% body weight) with nitroglycerin before cardiopulmonary bypass maintained stable hemodynamics and renal function. This approach proved safe and comparable to restrictive fluid regimens in patients with aortic valve disease.

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    Area of Science:

    • Cardiovascular Surgery
    • Anesthesiology
    • Nephrology

    Background:

    • Previous studies suggested a generous fluid regimen (6% body weight) with nitroprusside before cardiopulmonary bypass.
    • The current study investigates a modified fluid strategy using crystalloids and nitroglycerin.

    Purpose of the Study:

    • To evaluate central hemodynamics, pulmonary oxygenation, and glomerular filtration rate.
    • To assess the safety and efficacy of a moderate fluid regimen (3% body weight) with nitroglycerin during cardiopulmonary bypass.
    • To compare this approach with a restrictive fluid regimen.

    Main Methods:

    • Ten patients with aortic stenosis and/or incompetence received crystalloid fluid (3% body weight) and nitroglycerin.
    • Measurements included cardiac output, heart rate, blood pressures, arterial oxygen tension (PaO2), and creatinine clearance.

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  • Hemodynamic and renal parameters were assessed before, during, and after cardiopulmonary bypass.

    • Main Results:

    • Moderate fluid administration and nitroglycerin maintained normal hemodynamic and renal function parameters.
    • Neither hydration nor the bypass procedure significantly altered these parameters.
    • No significant differences were observed when compared to a restrictive fluid regimen group.

    Conclusions:

    • A moderate fluid regimen (3% body weight) combined with nitroglycerin is safe and effective before cardiopulmonary bypass.
    • This strategy ensures stable hemodynamics and renal function in patients with aortic valve disease.
    • It offers comparable outcomes to restrictive fluid management.