Low birth weight as a risk factor of hearing loss

Area of Science:

• Pediatrics
• Audiology
• Neonatology

Background:

• Low birth weight (LBW) is a significant risk factor for developmental issues, including hearing impairment.
• Early audiological assessment is crucial for identifying hearing loss in high-risk infant populations.
• Understanding the relationship between birth weight, risk factors, and hearing outcomes is vital for timely intervention.

Purpose of the Study:

• To conduct audiological evaluations in low birth weight (LBW) children.
• To investigate the association between very low birth weight (VLBW) and risk factors with subsequent hearing loss.
• To identify specific risk factors contributing to hearing impairment in LBW infants.

Main Methods:

• Audiological examinations were performed on 110 children.
• Evaluations included auditory brainstem responses, pure tone audiometry, and impedance audiometry, tailored to age.
• Prenatal, perinatal, and postnatal risk factors were analyzed in relation to audiological diagnoses.

Main Results:

• The presence of more than two perinatal and/or postnatal risk factors was linked to profound hearing loss.
• No significant association was found between the accumulation of prenatal risk factors and hearing loss.
• Neonatal intensive care unit (NICU) treatment programs and the general physical status of neonates posed the greatest risk for acquired profound hearing loss.

Conclusions:

• Perinatal and postnatal risk factors are critical indicators for profound hearing loss in LBW children.
• Prenatal factors did not demonstrate a similar correlation with hearing loss in this cohort.
• Neonatal health status and NICU interventions are strongly associated with acquired hearing impairment in LBW infants, underscoring the need for targeted audiological surveillance.