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Cardiac performance testing by volume loading and lower-extremity compression

J J Skillman, R C Patel, J M Klick

    Archives of Surgery (Chicago, Ill. : 1960)
    |August 1, 1982
    PubMed
    Summary
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    Cardiac output remained unchanged during volume loading and anti-g suit compression in patients undergoing aortic surgery. This highlights the importance of monitoring pulmonary capillary wedge pressure for optimal fluid management.

    Area of Science:

    • Cardiovascular Physiology
    • Surgical Patient Management

    Background:

    • Aortic operations carry significant hemodynamic risks.
    • Optimizing fluid management is crucial for patient outcomes.

    Purpose of the Study:

    • To assess cardiac performance under combined volume loading and anti-g suit compression in patients awaiting aortic surgery.
    • To evaluate the impact of these maneuvers on cardiac output (CO) and pulmonary capillary wedge pressure (PCWP).

    Main Methods:

    • Hemodynamic parameters were monitored in 11 patients undergoing aortic operations.
    • Cardiac output and pulmonary capillary wedge pressure were measured during volume loading and anti-g suit compression.

    Main Results:

    • Cardiac output showed a flat response to volume loading and anti-g suit compression.

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  • Pulmonary capillary wedge pressure significantly increased, but remained low overall.
  • Intrapulmonary shunt fraction was unaffected by the testing procedure.

    • Conclusions:

    • Preoperative Swan-Ganz catheter insertion is vital for accurate PCWP and CO monitoring.
    • Individualized fluid management based on PCWP and CO is essential for patients undergoing aortic reconstructive operations.