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Cytosolic Calcium Measurements in Renal Epithelial Cells by Flow Cytometry
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Blood pressure response to changes in serum ionized calcium during hemodialysis

J C Maynard, C Cruz, M Kleerekoper

    Annals of Internal Medicine
    |March 1, 1986
    PubMed

    Insights

    Increasing dialysate calcium concentration during hemodialysis helps maintain blood pressure. Higher calcium levels in dialysis fluid reduce the drop in mean arterial pressure, potentially preventing intradialytic hypotension.

    Area of Science:

    • Nephrology
    • Cardiovascular Physiology

    Background:

    • Intradialytic hypotension is a common complication during hemodialysis.
    • Maintaining hemodynamic stability is crucial for patient outcomes.

    Purpose of the Study:

    • To investigate the impact of varying dialysate calcium concentrations on blood pressure during hemodialysis.
    • To determine if higher calcium levels can mitigate intradialytic hypotension.

    Main Methods:

    • A prospective cross-over trial involving twelve patients undergoing hemodialysis.
    • Patients were dialyzed with two different dialysate calcium concentrations: 5.5 mg/dL and 7.5 mg/dL.
    • Mean arterial pressure, serum osmolality, body weight, and heart rate were monitored.

    Main Results:

    • Dialysis with a higher dialysate calcium concentration (7.5 mg/dL) was associated with a significantly smaller decrease in mean arterial pressure compared to the lower concentration (5.5 mg/dL) (p < 0.001).
    • No significant differences were observed in serum osmolality, body weight, or heart rate between the two dialysate calcium levels post-dialysis.

    Conclusions:

    • Increasing dialysate calcium concentration may serve as an effective strategy to prevent or reduce intradialytic hypotension in hemodialysis patients.
    • This finding suggests a potential therapeutic approach to improve hemodynamic tolerance during dialysis treatments.

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