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Related Experiment Videos

Thyroid hormones, catecholamine and cortisol concentrations after upper abdominal surgery.

H Rutberg, E Håkanson, B Anderberg

    Acta Chirurgica Scandinavica
    |January 1, 1984
    PubMed
    Summary

    Upper abdominal surgery significantly alters thyroid hormones and stress hormones. While catecholamines and cortisol rise immediately, triiodothyronine (T3) decreases, with no correlation found between these changes and oxygen consumption.

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    Area of Science:

    • Endocrinology
    • Metabolic Response to Surgery
    • Physiology

    Background:

    • Surgical stress triggers significant physiological responses, including hormonal changes.
    • Understanding the interplay of thyroid hormones, catecholamines, and cortisol post-surgery is crucial for patient management.

    Purpose of the Study:

    • To investigate the dynamic changes in thyroid hormones (T3, free T3, T4, free T4, TSH), catecholamines (adrenaline, noradrenaline), and cortisol.
    • To assess the relationship between these hormonal changes and oxygen consumption following cholecystectomy.

    Main Methods:

    • Simultaneous measurement of serum/plasma hormones and oxygen consumption in 20 patients undergoing cholecystectomy.
    • Arterial blood sampling at multiple time points: pre-surgery and 2, 24, 48, 72, 96 hours post-incision.

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    Main Results:

    • A marked, prolonged decrease in triiodothyronine (T3) and free T3 was observed.
    • Significant increases in adrenaline, noradrenaline, and cortisol occurred post-surgery, with catecholamines peaking early.
    • Elevated oxygen uptake persisted throughout the postoperative period, but no correlations were found between hormones and oxygen consumption.

    Conclusions:

    • Upper abdominal surgery induces distinct temporal patterns in thyroid hormones and stress hormones.
    • Catecholamine and cortisol responses are immediate, while thyroid hormone changes are more delayed (around 24 hours).
    • The previously reported inverse correlation between T3 and catecholamines in severe hypermetabolism (burns) is absent in the moderate hypermetabolism of abdominal surgery.