<?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>0300-9041</journal-id>
<journal-title><![CDATA[Ginecología y obstetricia de México]]></journal-title>
<abbrev-journal-title><![CDATA[Ginecol. obstet. Méx.]]></abbrev-journal-title>
<issn>0300-9041</issn>
<publisher>
<publisher-name><![CDATA[Federación Mexicana de Colegios de Obstetricia y Ginecología A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0300-90412021000300005</article-id>
<article-id pub-id-type="doi">10.24245/gom.v89i3.4695</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Características histopatológicas de placentas en condiciones de ruptura prematura de membranas fetales pretérmino en un hospital universitario de Colombia]]></article-title>
<article-title xml:lang="en"><![CDATA[Histopathological characteristics of the placenta with premature rupture of preterm fetal membranes in a university hospital in Colombia]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mejía]]></surname>
<given-names><![CDATA[Fabián Andrés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Flórez]]></surname>
<given-names><![CDATA[Cristhian Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sandoval]]></surname>
<given-names><![CDATA[Diana Katherine]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Industrial de Santander  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Industrial de Santander Hospital Universitario de Santander ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Industrial de Santander Hospital Universitario de Santander ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<volume>89</volume>
<numero>3</numero>
<fpage>212</fpage>
<lpage>221</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0300-90412021000300005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0300-90412021000300005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0300-90412021000300005&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  OBJETIVO:  Evaluar si existen diferencias histopatológicas entre la ruptura prematura de membranas fetales, la corioamnionitis crónica y la infección intraamniótica ascendente en las placentas de pacientes con diagnóstico de ruptura prematura de membranas fetales pretérmino entre los distintos grupos de edad gestacional.  MATERIALES Y MÉTODOS:  Estudio retrospectivo, descriptivo y observacional, de corte transversal, efectuado en placentas obtenidas por ruptura prematura de membranas fetales en el Hospital Universitario de Santander, Colombia, durante el 2016. Las variables clínicas y los hallazgos histopatológicos se relacionaron con la edad gestacional y se analizaron mediante razones y proporciones, con medidas de significación estadística (prueba t, &#967;2) y considerando significativas las diferencias con p &lt; 0.05.  RESULTADOS:  Se obtuvieron 65 placentas entre 22 y 36.6 semanas de gestación. Se encontraron 9 con diagnóstico de corioamnionitis, 30 con infección intraamniótica ascendente y 26 con respuesta inflamatoria fetal, más frecuente en semanas tempranas del embarazo. De las placentas sin infección intraamniótica ascendente, 14 tuvieron cambios de malperfusión vascular materna.  CONCLUSIONES:  La infección intraamniótica ascendente y la malperfusión vascular materna fueron las principales causas de ruptura prematura de membranas fetales.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  OBJECTIVE:  To evaluate whether there are histopathologic differences between preterm premature rupture of fetal membranes, chronic chorioamnionitis, and ascending intraamniotic infection in placentas of patients a diagnosed with preterm premature rupture of fetal membranes among different gestational age groups.  MATERIALS AND METHODS:  A descriptive cross-sectional observational study was made with the placentas obtained by premature rupture of preterm fetal membranes in the Hospital Universitario de Santander, Colombia, during the year 2016. The clinical variables and histopathological findings were related to gestational age and analyzed by reasons and proportions, applying measures of statistical significance (t test, chi square), with acceptance of statistical significance for p &lt; 0.05.  RESULTS:  Sixty-five placentas were obtained between 22 and 36.6 weeks of gestation. Nine were found with a diagnosis of chorioamnionitis, 30 with ascending intra-amniotic infection and 26 with a fetal inflammatory response, more frequent in early gestational ages. Of the placentas without ascending intraamniotic infection, 14 had maternal vascular malperfusion changes.  CONCLUSION:  The ascending intra-amniotic infection and the maternal vascular malperfusion the main causes of premature rupture of preterm fetal membranes in the population studied.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Rotura prematura de membranas fetales]]></kwd>
<kwd lng="es"><![CDATA[placenta]]></kwd>
<kwd lng="es"><![CDATA[enfermedades de la placenta]]></kwd>
<kwd lng="es"><![CDATA[corioamnionitis]]></kwd>
<kwd lng="es"><![CDATA[circulación placentaria]]></kwd>
<kwd lng="en"><![CDATA[Fetal membranes premature rupture]]></kwd>
<kwd lng="en"><![CDATA[placenta]]></kwd>
<kwd lng="en"><![CDATA[placenta diseases]]></kwd>
<kwd lng="en"><![CDATA[chorioamnionitis]]></kwd>
<kwd lng="en"><![CDATA[placental circulation]]></kwd>
</kwd-group>
</article-meta>
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