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Related Experiment Videos

Postoperative deep body temperature rhythm.

J Narumi, K Suma, H Kaneko

    The Japanese Journal of Surgery
    |May 1, 1987
    PubMed
    Summary
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    Postoperative deep body temperature rhythms were significantly disturbed after cardiac surgery compared to general surgery. Patients undergoing aorto-coronary bypass surgery experienced longer recovery times for their temperature rhythms.

    Area of Science:

    • Physiology
    • Chronobiology
    • Surgical Medicine

    Background:

    • Postoperative recovery is influenced by physiological disruptions.
    • Deep body temperature rhythms (thermoregulation) are critical for homeostasis.
    • Major surgeries can impact circadian and infradian biological rhythms.

    Purpose of the Study:

    • To investigate and compare deep body temperature rhythms in patients after aorto-coronary bypass surgery versus non-cardiac major surgery.
    • To assess the extent and duration of rhythm disturbances postoperatively.
    • To identify differences in rhythm parameters between cardiac and general surgery patients.

    Main Methods:

    • Studied deep body temperature rhythms in 15 patients after aorto-coronary bypass surgery (Group I) and 7 patients after non-cardiac major surgery (Group II).

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  • Analyzed rhythm characteristics including period, mesor, amplitude, and acrophase.
  • Assessed the time required for temperature rhythm recovery.

    • Main Results:

    • Both groups exhibited disturbed deep body temperature rhythms, with more pronounced effects in Group I.
    • Group I patients showed longer rhythm periods and greater individual variation in mesor and amplitude.
    • Acrophase deviations were wide in both groups, and cardiac surgery patients required longer recovery times.

    Conclusions:

    • Aorto-coronary bypass surgery significantly disrupts deep body temperature rhythms compared to general major surgery.
    • Cardiac surgery patients exhibit prolonged alterations in thermoregulatory rhythmicity, necessitating longer recovery periods.
    • Understanding these rhythm disturbances is crucial for optimizing postoperative care and recovery.