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Related Experiment Videos

Effect of halothane on systolic time intervals.

J D Hasbrouck, C C Coleman

    Anesthesia and Analgesia
    |July 1, 1977
    PubMed
    Summary

    Noninvasive systolic time intervals (STI) assess cardiac activity during anesthesia. This simple, rapid method confirms halothane

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    Area of Science:

    • Cardiology
    • Anesthesiology
    • Medical Technology

    Background:

    • Assessing cardiac function during general anesthesia is crucial.
    • Conventional methods for evaluating anesthetic effects on the heart can be invasive.
    • There is a need for noninvasive monitoring techniques.

    Purpose of the Study:

    • To evaluate the utility of noninvasive systolic time intervals (STI) for assessing cardiac activity during general anesthesia.
    • To demonstrate the application of STI using halothane as an anesthetic agent.

    Main Methods:

    • Simultaneous rapid-strip recordings of electrocardiogram, phonocardiogram, and carotid pulse wave.
    • Calculation of systolic time intervals (STI) from recorded data.
    • Utilizing STI to assess cardiac function under general anesthesia.

    Main Results:

    • Systolic time intervals (STI) provide a noninvasive method to assess cardiac activity.
    • Results using STI supported the known myocardial depressant effects of halothane.
    • The procedure is relatively simple and utilizes straightforward equipment.

    Conclusions:

    • Noninvasive systolic time intervals (STI) are a valuable tool for monitoring cardiac function during general anesthesia.
    • This technique offers a simple and clinically applicable alternative to invasive methods.
    • STI can effectively assess the cardiac effects of anesthetic agents like halothane.

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