<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1665-1146</journal-id>
<journal-title><![CDATA[Boletín médico del Hospital Infantil de México]]></journal-title>
<abbrev-journal-title><![CDATA[Bol. Med. Hosp. Infant. Mex.]]></abbrev-journal-title>
<issn>1665-1146</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Salud, Hospital Infantil de México Federico Gómez]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1665-11462020000200076</article-id>
<article-id pub-id-type="doi">10.24875/bmhim.19000160</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Hallazgos neurofisiológicos de potenciales evocados auditivos en lactantes con antecedente de prematuridad]]></article-title>
<article-title xml:lang="en"><![CDATA[Neurophysiological findings of auditory evoked potentials in infants with a history of prematurity]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hidalgo-Gutiérrez]]></surname>
<given-names><![CDATA[Ricardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A1b"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Suárez-Hortiales]]></surname>
<given-names><![CDATA[Sabino]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A1b"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Giménez-Scherer]]></surname>
<given-names><![CDATA[Juan A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A2b"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fraire-Martínez]]></surname>
<given-names><![CDATA[María I.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A1b"/>
</contrib>
</contrib-group>
<aff id="A1a">
<institution><![CDATA[,Instituto Mexicano del Seguro Social Departamento de Neurofisiología ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="A1b">
<institution><![CDATA[,Instituto Mexicano del Seguro Social Unidad Médica de Alta Especialidad Hospital de Pediatría Centro Médico Nacional Siglo XXI]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="A2a">
<institution><![CDATA[,Instituto Mexicano del Seguro Social Unidad de Investigación Médica en Inmunología ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="A2b">
<institution><![CDATA[,Instituto Mexicano del Seguro Social Unidad Médica de Alta Especialidad Hospital de Pediatría Centro Médico Nacional Siglo XXI]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2020</year>
</pub-date>
<volume>77</volume>
<numero>2</numero>
<fpage>76</fpage>
<lpage>82</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-11462020000200076&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-11462020000200076&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-11462020000200076&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción: Los potenciales evocados auditivos (PEA) son la prueba neurofisiológica más utilizada para evaluar el desarrollo funcional del tronco encefálico auditivo en lactantes; además, permiten evaluar la audición para las frecuencias altas.  Métodos: Se llevó a cabo un estudio observacional, descriptivo, transversal y retrospectivo. Se evaluaron los resultados de PEA de 186 lactantes (372 oídos) con antecedente de prematuridad. Se compararon la respuesta bioeléctrica, la morfología, la amplitud, las latencias I, III y V, los intervalos I-III, III-V y I-V y los umbrales auditivos en dos grupos de prematuros &lt; 32 y &#8805; 32 semanas de edad gestacional (SEG).  Resultados: La respuesta bioeléctrica, las latencias I, III y V y los intervalos I-III y III-V fueron similares en los dos grupos de prematuros de acuerdo con su edad corregida; al compararse, no se encontraron diferencias estadísticamente significativas (p &gt; 0.05) para estas variables. La amplitud, la morfología y el intervalo I-V estuvieron más afectados en el grupo de prematuros &lt; 32 SEG (p &lt; 0.05). De los 372 oídos evaluados, se encontraron 275 con audición normal y 97 con algún grado de hipoacusia para las frecuencias altas, más frecuente en los pacientes &lt; 32 SEG (p &lt; 0.05).  Conclusiones: El desarrollo funcional del tronco cerebral auditivo fue similar entre los grupos de prematuros y dentro del rango normal para la edad corregida respectiva. La prematuridad produjo un incremento directamente proporcional y estadísticamente significativo en la frecuencia de hipoacusia para las frecuencias altas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: Auditory evoked potentials (AEPS) constitutes the most commonly used neurophysiological test to assess the functional development of the auditory brainstem in infants and allows the evaluation of hearing for high frequencies.  Methods: An observational, descriptive, cross-sectional and retrospective study was conducted. The AEPS results for 186 infants (372 ears) with a history of prematurity were examined. The bioelectrical response, morphology, amplitude, latencies I, III and V, and intervals I-III, III-V and I-V were compared, as well as auditory thresholds between two groups of premature infants &lt; 32 and &#8805; 32 weeks of gestational age (WGA).  Results: The bioelectrical response, latencies I, III and V, and intervals I-III and III-V were similar between the two groups of premature infants according to their corrected age; no statistically significant differences were found (p &gt; 0.05) for these variables. The amplitude, morphology, and the I-V interval were more affected in the group of premature infants &lt; 32 WGA (p &lt; 0.05). Of the 372 ears evaluated, 275 showed normal hearing and 97 showed some degree of hearing loss for high frequencies, which was more frequent in patients &lt; 32 WGA (p &lt; 0.05).  Conclusions: The functional development of the auditory brainstem was similar between the groups of premature infants and within the normal range for the respective corrected age. Prematurity produced a directly proportional and statistically significant increase in the frequency of hearing loss for high frequencies.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Potenciales evocados auditivos]]></kwd>
<kwd lng="es"><![CDATA[Prematuridad]]></kwd>
<kwd lng="es"><![CDATA[Hipoacusia]]></kwd>
<kwd lng="en"><![CDATA[Auditory evoked potentials]]></kwd>
<kwd lng="en"><![CDATA[Prematurity]]></kwd>
<kwd lng="en"><![CDATA[Hearing loss]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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