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Nosocomial dysnatremia.

W D Neithercut1, R J Spooner

  • 1Department of Pathological Biochemistry, Western Infirmary, Glasgow, Scotland, U.K.

Clinical Chemistry
|November 1, 1988
PubMed
Summary
This summary is machine-generated.

Patients experiencing both low (hyponatremia) and high (hypernatremia) sodium levels during one hospital stay face significantly higher mortality. This rapid shift in serum sodium concentration is a critical indicator of poor prognosis.

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Area of Science:

  • Nephrology
  • Internal Medicine
  • Clinical Biochemistry

Background:

  • Fluid and electrolyte balance is crucial for patient outcomes.
  • Abnormal serum sodium concentrations, including hyponatremia and hypernatremia, are common clinical findings.
  • The clinical significance of rapid shifts between hyponatremia and hypernatremia within a single admission requires further investigation.

Purpose of the Study:

  • To investigate the mortality associated with developing both hyponatremia and hypernatremia during a single hospital admission.
  • To compare the mortality rates of these patients with a matched normonatremic control group.
  • To identify potential predictors of this biochemical abnormality.

Main Methods:

  • Retrospective review of biochemistry data for patients admitted to the hospital.

Related Experiment Videos

  • Identification of patients who exhibited both hyponatremia and hypernatremia within a defined period (<= 10 days).
  • Comparison of mortality rates between the study group and an age-, sex-, and admission-matched normonatremic control group.

    • Main Results:

    • Patients who developed both hyponatremia and hypernatremia within 10 days had a 42% mortality rate.
    • This mortality rate was significantly higher than the 8.2% observed in the normonatremic control group (P < 0.01).
    • A serum sodium concentration change exceeding 20 mmol/L was noted in 80% of deceased patients, though the interval between extremes was not statistically different between survivors and non-survivors.

    Conclusions:

    • Experiencing both hyponatremia and hypernatremia during a single admission is associated with a substantially increased risk of mortality.
    • Rapid fluctuations in serum sodium concentration represent a critical clinical event.
    • No specific clinical features were identified to reliably predict the development of this dangerous biochemical pattern.