Could neonatal hypernatremia dehydration influence hearing status?

Area of Science:

• Neonatology
• Pediatric Audiology
• Endocrinology

Background:

• Neonatal hypernatremia dehydration (NHD) presents significant acute and chronic risks to infants, including developmental delays.
• Hearing impairment in neonates can critically disrupt early language acquisition.
• Assessing hearing status in infants with NHD is crucial for understanding potential long-term impacts.

Purpose of the Study:

• To evaluate the incidence of hearing impairment in neonates diagnosed with hypernatremia dehydration.
• To compare hearing status between infants with NHD and those with normal serum sodium levels.

Main Methods:

• A case-control study was conducted involving 110 infants.
• Infants with serum sodium >150 mEq/L were classified as having NHD.
• Hearing impairment was assessed in NHD infants compared to controls with serum sodium ≤150 mEq/L.

Main Results:

• Transient hearing impairment was observed in three out of 110 infants with NHD.
• The mean serum sodium level in hearing-impaired infants was 173 mg/dL.
• Hearing impairment occurred in cases of severe hypernatremia.

Conclusions:

• Transient hearing impairment is more prevalent in infants with hypernatremia dehydration.
• The observed difference in hearing impairment between NHD and control groups did not reach statistical significance (P>0.05).
• Severe hypernatremia is associated with hearing impairment in neonates.