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Cardiac output determination

S L Woods, S Osguthorpe

    AACN Clinical Issues in Critical Care Nursing
    |February 1, 1993
    PubMed
    Summary

    Critical care nurses use cardiac output measurements to guide patient therapy. This review covers cardiac output determinants, measurement techniques, and troubleshooting for thermodilution methods, offering insights for improved nursing management.

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    Area of Science:

    • Cardiovascular Physiology
    • Critical Care Nursing
    • Hemodynamic Monitoring

    Background:

    • Critical care nurses routinely measure cardiac output (CO) to inform patient assessment and therapeutic planning.
    • Accurate CO monitoring is essential for managing critically ill patients.
    • Understanding CO determinants is crucial for effective clinical decision-making.

    Purpose of the Study:

    • To review the physiological determinants of cardiac output.
    • To discuss clinical factors influencing these determinants.
    • To present principles and techniques of common CO measurement methods, focusing on thermodilution, and to explore nursing management issues and future considerations.

    Main Methods:

    • Review of physiological determinants of cardiac output.
    • Discussion of clinical factors affecting cardiac output.
    • Explanation of common cardiac output measurement principles and techniques, including thermodilution.
    • Presentation of troubleshooting guidelines for thermodilution CO measurement.
    • Analysis of nursing management issues supported by nursing research.

    Main Results:

    • Cardiac output is influenced by preload, afterload, and contractility.
    • Thermodilution is a common CO measurement technique with specific troubleshooting needs.
    • Nursing management strategies can be informed by understanding CO dynamics and measurement principles.
    • Future ideal CO measurement systems may offer enhanced accuracy and ease of use.

    Conclusions:

    • Nurses play a vital role in obtaining and interpreting cardiac output data.
    • A comprehensive understanding of cardiac output physiology and measurement techniques is essential for critical care nurses.
    • Addressing challenges in CO measurement, particularly with thermodilution, and considering future technological advancements can optimize patient care.

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