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Effects Of Early Sodium And Fluid Intakes On Sodium Levels And Weight Change In Extremely Preterm Infants
Umeå University, Faculty of Medicine, Department of Clinical Sciences.
Umeå University, Faculty of Medicine, Department of Clinical Sciences, Paediatrics.ORCID iD: 0000-0002-4649-0653
Umeå University, Faculty of Medicine, Department of Clinical Sciences, Paediatrics.ORCID iD: 0000-0002-0726-7029
2014 (English)In: Archives of Disease in Childhood, ISSN 0003-9888, E-ISSN 1468-2044, Vol. 99, no Suppl 2, p. A38-A38, article id 0-046Article in journal (Refereed) Published
Abstract [en]

Background: Hypernatremia is common in extremely preterm infants but it is unclear to what extent it is affected by sodium (Na) and fluid intakes. It is assumed that infants normally lose 5–10% of birth weight during the first postnatal days.

Aim: To explore associations between early intakes of Na and fluids and biochemical levels of Na as well as weight change during early postnatal life.

Method: We investigated a population-based cohort of Swedish extremely preterm infants (<27 gestational weeks). Detailed data of Na intakes, biochemical levels of Na and anthropometric measurements were retrospectively obtained from hospital records. Data are expressed as mean±SD.

Results: Preliminary analyses of 547 infants (gestational age 25.3 ± 1.1, birth weight 762 ± 170g) showed that highest Na levels occurred at day 3 of life (144.3 ± 6.2mmol/L) and were associated with Na intake during the first 2 days of life (R=+0.25), gestational age (R=-0.23) and birth weight (R=-0.18) (p < 0.001 for all).

Of included infants 32% lost more than 10% of birth weight during the first 3 days. There was a strong correlation between fluid intake within the first two days of life and weight change between birth and day 3 (R=+0.56, p < 0.001). Among those (27%) who lost between 5–10% in weight, fluid intakes were on average 103 mL/kg/d.

Conclusion: Early Na levels were significantly correlated with early Na intake, low gestational age as well as low birth weight. In order to avoid hypernatremia and excessive weight loss, fluid and Na intakes during the first 2 days need to be strictly regulated.

Place, publisher, year, edition, pages
2014. Vol. 99, no Suppl 2, p. A38-A38, article id 0-046
National Category
Pediatrics
Research subject
Pediatrics
Identifiers
URN: urn:nbn:se:umu:diva-104306DOI: 10.1136/archdischild-2014-307384.113OAI: oai:DiVA.org:umu-104306DiVA, id: diva2:818950
Conference
The 5th Congress of the European Academy of Paediatric Societies (EAPS), Barcelona, Spain, October 17-21, 2014
Available from: 2015-06-09 Created: 2015-06-09 Last updated: 2022-02-02Bibliographically approved

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Späth, CorneliaStoltz Sjöström, ElisabethDomellöf, Magnus

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