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Oliguria and its sequelae.

K L Lynn, T J Neale, R R Bailey

    The New Zealand Medical Journal
    |December 28, 1977
    PubMed
    Summary
    This summary is machine-generated.

    This 1975 study found that 70% of patients with acute renal failure (ARF) died, often due to infection. Early assessment using urine sodium and coagulation studies can help identify ARF, but high-risk patient acceptance contributes to persistent mortality.

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    Area of Science:

    • Nephrology
    • Internal Medicine
    • Critical Care Medicine

    Background:

    • Oliguria, characterized by reduced urine output, can indicate serious underlying conditions.
    • Acute renal failure (ARF) and rapidly reversible oliguria (RR) are distinct entities requiring different management strategies.

    Purpose of the Study:

    • To analyze the causes, assessment methods, and outcomes of oliguria in a 1975 patient cohort.
    • To identify factors associated with acute renal failure and its mortality.

    Main Methods:

    • Retrospective review of 59 patients presenting with oliguria.
    • Utilized urine sodium concentration (UNa), osmolality, coagulation studies, and intravenous urography for assessment.
    • Compared conservative management versus dialysis for ARF.

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    Main Results:

    • 64% of oliguria cases were medical, 27% surgical, and 9% obstetrical.
    • High UNa or coagulation abnormalities predicted ARF.
    • Infection was the most common complication and cause of death in ARF.
    • Seventy percent of ARF patients died, with higher mortality in the elderly and medically ill.

    Conclusions:

    • Despite advances, ARF mortality remains high due to increased acceptance of high-risk patients.
    • Improved awareness of preventable causes of oliguria is crucial.
    • Early assessment tools like UNa and coagulation studies are valuable.