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DC temperature-regulating device for anesthetized experimental animals.

P A Oberg, E Persson, H Pettersson

    Journal of Applied Physiology
    |October 1, 1975
    PubMed
    Summary
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    This study presents a novel temperature-regulating device for anesthetized animals. The system precisely controls rectal temperature within +/- 0.1°C, ensuring stable physiological conditions during experiments.

    Area of Science:

    • Veterinary Medicine
    • Animal Physiology
    • Biomedical Engineering

    Background:

    • Maintaining stable body temperature is critical for experimental animals under anesthesia.
    • Anesthetic agents can significantly disrupt thermoregulation, leading to hypothermia or hyperthermia.
    • Precise temperature control is essential for the validity and reproducibility of research findings.

    Purpose of the Study:

    • To develop and evaluate a novel, automated temperature-regulating device for anesthetized experimental animals.
    • To achieve high-precision control over the animals' core body temperature.
    • To minimize temperature fluctuations during surgical or experimental procedures.

    Main Methods:

    • A thermistor probe was utilized to continuously measure the rectal temperature of anesthetized animals.

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  • A nonlinear amplification system processed the temperature data.
  • The processed signal controlled the power output to an integrated heating pad.
  • The device was tested for its ability to maintain stable temperatures over time.

    • Main Results:

    • The device successfully regulated the rectal temperature of experimental animals.
    • Temperature variations were consistently maintained within +/- 0.1 degrees C.
    • Stable temperature regulation was achieved within 30 minutes of device operation.

    Conclusions:

    • The developed temperature-regulating device offers precise and reliable control of core body temperature in anesthetized animals.
    • This technology can significantly improve the welfare of experimental animals and the quality of research data.
    • The device represents a valuable tool for physiological and pharmacological research requiring stable thermal conditions.