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[Determination of renal plasmatic flow by the hematic curve evaluation of PAH decrease (author's transl)].

A Vittoria, F Laghi Pasini

    Quaderni Sclavo Di Diagnostica Clinica E Di Laboratorio
    |June 1, 1976
    PubMed
    Summary
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    Para-aminohippuric acid (PAH) bolus clearance correlates with standard methods but overestimates renal function. This rapid technique requires adjustment for accurate PAH clearance measurement in patients with kidney disease.

    Area of Science:

    • Nephrology
    • Renal Physiology

    Context:

    • Assessing renal function is crucial for managing kidney diseases.
    • Para-aminohippuric acid (PAH) clearance is a standard measure of effective renal plasma flow.
    • Traditional PAH clearance methods involve timed urine and blood collections.

    Purpose:

    • To evaluate the correlation and agreement between a novel "bolus" PAH clearance method and the standard technique.
    • To determine if "bolus" PAH clearance can accurately reflect renal function in patients with renal diseases.

    Summary:

    • Thirty patients with renal diseases underwent both standard PAH clearance and "bolus" PAH clearance measurements.
    • "Bolus" PAH clearance was calculated from the blood concentration decay after a rapid infusion.
    • A strong correlation was observed between the two methods, but "bolus" PAH clearance significantly overestimated the standard technique by a mean of 236 ml/min.

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    Impact:

    • The "bolus" PAH clearance method offers a potentially faster alternative to the standard technique.
    • A significant overestimation necessitates the development of regression factors for accurate clinical application.
    • This finding has implications for the precise assessment of renal plasma flow in clinical nephrology.