ReviewChildren (Basel, Switzerland)2026
Sodium Values During the First 10 Postnatal Days in Extremely-Low-Birth-Weight Infants and Long-Term Neurocognitive Outcomes: A Systematic Review.
Review in Children (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeTo synthesize all existing literature on the association between sodium disturbances during the first 10 days of life in Extremely-Low-Birth-Weight (ELBW) infants and the risk of developing severe intraventricular hemorrhage (IVH > grade 1) or long-term neurodevelopmental impairment.
methodsApplying systematic review (ID CDR42024622933) principles, five major databases were explored. Any study was included if it reported on ELBW infants, on serum sodium values within the first 10 postnatal days, or was related these to neurocognitive or neurodevelopmental outcomes.
resultsTen studies (13,276 infants) met inclusion criteria. Six studies evaluated the association between hypernatremia (>145 or >150 mmol/L) and severe IVH, and two reported a significant association. Among two studies studying hyponatremia (ranging <130 or <120 mmol/L), one found a significant association with severe IVH. Evidence regarding sodium fluctuations (difference between the maximum and minimum serum sodium values) identified fluctuations >13 mmol/L as a strong risk factor for severe IVH, while another study showed that glucose-corrected sodium fluctuations were independently associated with severe IVH. Long-term neurodevelopmental outcomes were reported in four studies; hyponatremia was significantly associated with hearing loss in one study (OR 5.6 (95% CI 1.1-27.8)), while another study reported that glucose-corrected sodium fluctuations were associated with neurodevelopmental impairment at 18-21 months, although significance disappeared after adjustment for confounding factors.
conclusionConsidering the limitations related to heterogeneity in study design, threshold sodium values and cohort size, this systematic review suggests a possible association between early sodium disturbances and adverse neurodevelopmental outcomes in ELBW infants, emphasizing the need for further high-quality, prospective studies, especially since sodium management can be modulated.
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