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Related Experiment Videos

Multiple determination of cardiac output using a two-bottle technique

C Ray, G C Carlon, P B Campfield

    Critical Care Medicine
    |January 1, 1979
    PubMed
    Summary

    This study introduces an inexpensive method for repeated cardiac output measurements using readily available materials. The technique provides accurate results, allowing for continuous patient monitoring over extended periods.

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    Medical physics·2015

    Area of Science:

    • Cardiovascular Physiology
    • Medical Device Technology

    Background:

    • Accurate and frequent cardiac output measurement is crucial for patient management.
    • Existing methods can be costly or labor-intensive, limiting continuous monitoring.

    Purpose of the Study:

    • To present a novel, cost-effective technique for serial cardiac output determinations.
    • To validate the accuracy and reliability of this new method.

    Main Methods:

    • Utilizing two 150 ml bottles of 5% dextrose in water immersed in an ice slush.
    • Comparing results with a standard multiple syringe technique.

    Main Results:

    • The described technique demonstrated very close duplication of results compared to the standard method.

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  • The method is inexpensive and allows for up to 30 consecutive determinations.

    • Conclusions:

    • This technique offers a practical and affordable approach for continuous cardiac output monitoring.
    • It enables extended patient follow-up for up to four hours with high accuracy.