<?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>0187-5337</journal-id>
<journal-title><![CDATA[Perinatología y reproducción humana]]></journal-title>
<abbrev-journal-title><![CDATA[Perinatol. Reprod. Hum.]]></abbrev-journal-title>
<issn>0187-5337</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Perinatología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0187-53372023000100018</article-id>
<article-id pub-id-type="doi">10.24875/per.23000002</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Características poblacionales y placentarias asociadas a óbito en infección asintomática por SARS-CoV-2]]></article-title>
<article-title xml:lang="en"><![CDATA[Population characteristics and placental findings associated with stillbirth in asymptomatic SARS-CoV-2 infection]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tirado-Aguilar]]></surname>
<given-names><![CDATA[Omar A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ulloa-Domínguez]]></surname>
<given-names><![CDATA[Alan A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tirado-Aguilar]]></surname>
<given-names><![CDATA[Ricardo D.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramos-Mendoza]]></surname>
<given-names><![CDATA[Cecilia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mateu-Rogell]]></surname>
<given-names><![CDATA[Paloma]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Espino-y Sosa]]></surname>
<given-names><![CDATA[Salvador]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-Portilla]]></surname>
<given-names><![CDATA[Raigam J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Perinatología Departamento de Ginecología y Obstetricia ]]></institution>
<addr-line><![CDATA[ Ciudad de México]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Nacional de Perinatología Subdirección de Investigación Clínica ]]></institution>
<addr-line><![CDATA[ Ciudad de México]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma de San Luis Potosí Facultad de Medicina ]]></institution>
<addr-line><![CDATA[San Luis Potosí ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2023</year>
</pub-date>
<volume>37</volume>
<numero>1</numero>
<fpage>18</fpage>
<lpage>22</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-53372023000100018&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-53372023000100018&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-53372023000100018&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Objetivo: Comparar características poblacionales y hallazgos placentarios asociados a óbito, en mujeres con infección asintomática por coronavirus 2 del síndrome respiratorio agudo grave (SARS-CoV-2) al momento de la resolución del embarazo.  Material y métodos: Estudio transversal analítico, mujeres con diagnóstico de óbito e infección asintomática por SARS-CoV-2. Se excluyeron pacientes con patología ginecológica y aquellas con más de una prueba RT-PCR.  Resultados: No hay diferencia estadísticamente significativa entre las pacientes con infección asintomática por SARS-CoV-2 comparadas con pacientes sin infección para las características poblacionales como edad materna, antecedentes obstétricos, edad gestacional, escolaridad, estado civil, hábito tabáquico y enfermedades crónico-degenerativas. Tampoco hubo diferencia en los hallazgos placentarios de corioamnionitis, vasculitis, deciduitis, trombosis, aterosis aguda y necrosis fibrinoide.  Conclusiones: No hay diferencia estadísticamente significativa en las características poblacionales y placentarias en embarazadas con diagnóstico de óbito, con y sin infección asintomática por SARS-CoV-2. Tenemos datos insuficientes para afirmar alguna característica asociada a óbito en pacientes con infección por SARS-CoV-2 asintomática.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Objective: To compare population characteristics and placental findings associated with stillbirth, in women with asymptomatic severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection at the time of delivery.  Materials and methods: Analytical cross-sectional study women with a diagnosis of stillbirth and with asymptomatic SARS-CoV-2 infection. Patients with gynecological pathology and those with more than one RT-PCR test were excluded.  Results: There is no statistically significant difference between patients with asymptomatic SARS-CoV-2 infection compared to patients without infection for population characteristics such as maternal age, obstetric history, gestational age, education, marital status, smoking habit, chronic-degenerative diseases. There was no difference in placental findings of chorioamnionitis, vasculitis, deciduitis, thrombosis, acute atherosis, and fibrinoid necrosis.  Conclusions: There is no statistically significant difference in the population and placental characteristics, in pregnant women diagnosed with stillbirth with and without confirmed asymptomatic SARS-CoV-2 infection. For the moment, we have insufficient data to affirm any population characteristic associated with stillbirth in patients with asymptomatic SARS-CoV-2 infection.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Embarazo]]></kwd>
<kwd lng="es"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="es"><![CDATA[Asintomática]]></kwd>
<kwd lng="es"><![CDATA[Óbito fetal]]></kwd>
<kwd lng="es"><![CDATA[Característica poblacional]]></kwd>
<kwd lng="es"><![CDATA[Placenta]]></kwd>
<kwd lng="en"><![CDATA[Pregnancy]]></kwd>
<kwd lng="en"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="en"><![CDATA[Asymptomatic]]></kwd>
<kwd lng="en"><![CDATA[Stillbirth]]></kwd>
<kwd lng="en"><![CDATA[Population characteristic]]></kwd>
<kwd lng="en"><![CDATA[Placenta]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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