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Related Experiment Videos

Chronic instrumentation techniques for haemodynamic measurements.

M Zimpfer1

  • 1Clinic of Anaesthesia and General Intensive Care, University of Vienna, Austria.

British Journal of Anaesthesia
|January 1, 1988
PubMed
Summary

Anesthesia significantly disrupts cardiovascular autonomic control and hemodynamics in animals. Chronic instrumentation allows comparison of conscious versus anesthetized states to study anesthesia's impact on circulation.

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Area of Science:

  • Cardiovascular Physiology
  • Anesthesiology
  • Experimental Animal Research

Background:

  • Basal anesthesia can profoundly alter cardiovascular autonomic control, hemodynamics, myocardial function, and coronary hemodynamics.
  • These changes are critical for understanding anesthesia's effects on the cardiovascular system.
  • Sequential hemodynamic measurements are vital for comparing conscious and anesthetized states.

Purpose of the Study:

  • To describe chronic instrumentation techniques for studying anesthesia's cardiovascular effects.
  • To compare overall hemodynamics, coronary blood flow, and regional myocardial function in conscious versus anesthetized states.
  • To highlight the underrecognized impact of anesthesia on the integrative control of circulation.

Main Methods:

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  • Utilizing chronically instrumented experimental animals.
  • Performing sequential hemodynamic measurements.
  • Comparing cardiovascular variables in conscious versus anesthetized states.

    • Main Results:

    • Anesthesia causes considerable disruption of autonomic control of the cardiovascular system.
    • Profound changes in basal hemodynamics, myocardial function, and coronary hemodynamics were observed under anesthesia.
    • The study highlights the importance of comparing conscious and anesthetized states.

    Conclusions:

    • Anesthesia significantly impacts cardiovascular autonomic control and hemodynamics.
    • Chronic instrumentation techniques are valuable for assessing anesthetic effects.
    • The integrative control of circulation by anesthesia is not sufficiently recognized.