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Related Experiment Videos

[Endocrine response to extracorporeal circulation].

A V Meshcheriakov, U B Nurmatov, L I Vinnitskiĭ

    Vestnik Akademii Meditsinskikh Nauk SSSR
    |January 1, 1991
    PubMed
    Summary

    Increasing fentanyl dosage during extracorporeal circulation improves anesthesia adequacy in heart surgery. Humoral changes during cardiopulmonary bypass indicate effective anesthesia levels.

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    Area of Science:

    • Cardiology
    • Anesthesiology
    • Endocrinology

    Background:

    • Extracorporeal circulation (ECC) during heart surgery can induce significant neurohormonal and metabolic changes.
    • Maintaining adequate anesthesia is crucial for patient outcomes during complex cardiac procedures.

    Purpose of the Study:

    • To evaluate the impact of different anesthetic regimens on humoral responses during ECC in patients with acquired heart disease.
    • To determine the optimal fentanyl dosage for adequate anesthesia during cardiopulmonary bypass.

    Main Methods:

    • Analysis of vasopressin, renin, angiotensin II, and aldosterone levels.
    • Monitoring of hemodynamic parameters, acid-base balance, and arterial lactate.
    • Comparison of three anesthesia protocols in 32 patients undergoing heart surgery.

    Main Results:

    • Higher fentanyl doses (10-12 µg/kg/h) during ECC were associated with more stable humoral profiles.
    • Anesthesia maintained with fentanyl, diazepam, and atracurium showed significant humoral alterations.
    • Trimetotate (Artonad) administration at the start of perfusion resulted in distinct humoral changes.

    Conclusions:

    • Increasing fentanyl dosage during extracorporeal circulation is recommended for achieving adequate anesthesia during heart surgery.
    • Humoral changes during ECC can serve as a reliable indicator of anesthesia depth and adequacy.
    • Anesthetic management strategies significantly influence the neuroendocrine and metabolic response to cardiopulmonary bypass.

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