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Vol. 75. Issue 1.
Pages 1-7 (January - February 2024)
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Vol. 75. Issue 1.
Pages 1-7 (January - February 2024)
Original article
Influence of umbilical cord pH on the outcome of hearing screening with otoacoustic emissions in healthy newborns
Influencia del pH de cordón umbilical en el resultado del cribado auditivo con otoemisiones en recién nacidos sanos
Víctor Aparisi-Climenta,b, José Miguel Sequi-Sabaterc, José Ignacio Collar-Del Castilloa, José Miguel Sequi-Caneta,
Corresponding author
sequi_jos@gva.es

Corresponding author.
a Servicio de Pediatría, Hospital Francesc de Borja, Gandía (Valencia), Spain
b Fundación para el Fomento de la Investigación Sanitaria y Biomédica de la Comunitat Valenciana (FISABIO), Valencia, Spain
c Servicio de Reumatología, Hospital Universitario Reina Sofía, Córdoba, Spain
Article information
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Figures (1)
Tables (5)
Table 1. description of the study simple.
Table 2. Apgar value distribution.
Table 3. pH vs TEOAE cross tabulation of different subgroups.
Table 4. Kruskal-wallis test.
Table 5. APGAR vs pH cross-tabulation and statistics.
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Abstract

The effect of hypoxia on the functioning of the outer hair cells of the cochlea, which are responsible for the response to otoemissions used in neonatal hearing screening, is well known.

The aim of this study is to determine the influence of mild to moderate variations in umbilical cord pH at birth on the outcome of hearing screening with otoemissions in healthy newborns without hearing risk factors.

The sample is composed of 4536 healthy infants. The results show no significant differences in the hearing screening outcome between the asphyctic (<7.20) and normal pH group. Nor is a figure below 7.20 detected in the sample that is related to an alteration in the screening.

When broken down into subgroups with known factors of variation in the screening result, such as gender or lactation, no significant differences in response were detected.

Apgar ≤7 is significantly related to pH<7.20.

In conclusion, mild-moderate asphyxia associated with delivery of healthy newborns, without auditory risk factors, does not alter the outcome of otoemission screening.

Keywords:
Otoacoustic emissions
Neonatal hearing screening
Cochlea
Outer hair cells
Hypoxia
Resumen

Es conocido el efecto de la hipoxia sobre el funcionamiento de las células ciliadas externas de la cóclea que son las responsables de la respuesta a las otoemisiones utilizadas en el cribado auditivo neonatal.

El objetivo de este estudio es conocer la influencia que pueden tener variaciones leves o moderadas del pH de cordón umbilical al nacer en el resultado del cribado auditivo con otoemisiones en recién nacidos sanos sin factores de riesgo auditivo.

La muestra está compuesta de 4.536 niños sanos. Los resultados no muestran diferencias significativas en el resultado del cribado auditivo entre el grupo de pH asfíctico (<7,20) y normal. Tampoco se detecta una cifra de pH inferior a 7,20 en la muestra que se relacione con alteración en el cribado.

Desglosando en subgrupos con factores conocidos de variación en el resultado del cribado como es el género o la lactancia tampoco se detectan diferencias significativas de respuesta.

El Apgar ≤7 sí se relaciona significativamente con un pH<7,20.

En conclusión, las situaciones de asfixia leve-moderada asociadas al parto de recién nacidos sanos, sin factores de riesgo auditivo, no alteran el resultado del cribado con otoemisiones.

Palabras clave:
Otoemisiones acústicas
Cribado auditivo neonatal
Cóclea
Células ciliadas externas
Hipoxia

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