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Association of early dysnatremia with mortality in the neonatal intensive care unit: results from the AWAKEN study

  • AWAKEN Study Group
  • Northwell Health System
  • Albert Einstein College of Medicine
  • University of Alabama at Birmingham
  • University of Colorado Anschutz Medical Campus
  • University of Rochester
  • University of Virginia
  • Medical University of South Carolina
  • University of Michigan, Ann Arbor
  • Cincinnati Children's Hospital Medical Center
  • Canberra Hospital
  • Children's National Medical Center
  • Maimonides Medical Center
  • McGill University
  • Medanta (The Medicity)
  • Case Western Reserve University
  • Louisiana State University in Shreveport
  • Nationwide Children’s Hospital
  • Stony Brook University
  • Texas Children's Hospital Houston
  • Tufts Medical Center

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Objective: To determine the association of dysnatremia in the first postnatal week and risk of acute kidney injury (AKI) and mortality. Study design: A secondary analysis of 1979 neonates in the AWAKEN cohort evaluated the association of dysnatremia with (1) AKI in the first postnatal week and (2) mortality, utilizing time-varying Cox proportional hazard models. Result: Dysnatremia developed in 50.2% of the cohort and was not associated with AKI. Mortality was associated with hyponatremia (HR 2.15, 95% CI 1.07–4.31), hypernatremia (HR 4.23, 95% CI 2.07–8.65), and combined hypo/hypernatremia (HR 6.39, 95% CI 2.01–14.01). In stratified models by AKI-status, hypernatremia and hypo/hypernatremia increased risk of mortality in neonates without AKI. Conclusion: Dysnatremia within the first postnatal week was associated with increased risk of mortality. Hypernatremia and combined hypo/hypernatremia remained significantly associated with mortality in neonates without AKI. This may reflect fluid strategies kidney injury independent of creatinine and urine-output defined AKI, and/or systemic inflammation.

Original languageEnglish
Pages (from-to)1353-1360
Number of pages8
JournalJournal of Perinatology
Volume42
Issue number10
DOIs
StatePublished - Oct 2022

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