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Related Experiment Videos

Plasma ionized calcium during open-heart surgery.

M P Heining, R A Linton, D M Band

    Anaesthesia
    |March 1, 1985
    PubMed
    Summary

    Plasma ionized calcium levels remained stable during cardiopulmonary bypass in open heart surgery patients. Post-bypass, ionized calcium varied but did not clearly impact heart function, with influencing factors discussed.

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    Area of Science:

    • Cardiovascular Surgery
    • Anesthesiology
    • Clinical Chemistry

    Background:

    • Maintaining electrolyte balance is crucial during cardiac surgery.
    • Ionized calcium plays a vital role in myocardial contractility and cardiac function.
    • Cardiopulmonary bypass can alter various physiological parameters, including calcium levels.

    Purpose of the Study:

    • To investigate plasma ionized calcium concentrations in patients during and after open heart surgery.
    • To assess the relationship between ionized calcium levels and myocardial performance in the post-bypass period.
    • To explore factors that may influence ionized calcium levels in this surgical context.

    Main Methods:

    • Measurement of plasma ionized calcium in 18 patients undergoing open heart surgery.
    • Monitoring ionized calcium levels during cardiopulmonary bypass.
    • Assessing ionized calcium concentrations in the early post-bypass phase.
    • Evaluating myocardial performance in relation to calcium levels.

    Main Results:

    • Plasma ionized calcium concentration showed no significant change during cardiopulmonary bypass.
    • A broad spectrum of ionized calcium concentrations was observed in the early post-bypass period.
    • These observed variations in ionized calcium did not appear to overtly affect myocardial performance.

    Conclusions:

    • Cardiopulmonary bypass itself does not significantly alter plasma ionized calcium levels.
    • Post-cardiac surgery, ionized calcium levels can fluctuate widely without immediate detrimental effects on heart function.
    • Further investigation is warranted into the specific factors influencing ionized calcium dynamics in the post-bypass surgical setting.

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