<?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>1870-7203</journal-id>
<journal-title><![CDATA[Acta médica Grupo Ángeles]]></journal-title>
<abbrev-journal-title><![CDATA[Acta méd. Grupo Ángeles]]></abbrev-journal-title>
<issn>1870-7203</issn>
<publisher>
<publisher-name><![CDATA[Grupo Ángeles, Servicios de Salud]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1870-72032020000300264</article-id>
<article-id pub-id-type="doi">10.35366/95403</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Contenido de sangre residual en el cordón umbilical postnacimiento en prematuros y niños de término]]></article-title>
<article-title xml:lang="en"><![CDATA[Post-Birth umbilical cord blood content in premature and term infants]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Salazar Herrera]]></surname>
<given-names><![CDATA[Dora]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ferreira Jaime]]></surname>
<given-names><![CDATA[Tonatiuh Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guzmán Valdivia Gómez]]></surname>
<given-names><![CDATA[Gilberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Núñez del Prado Alcoreza]]></surname>
<given-names><![CDATA[José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Orozco del Pino]]></surname>
<given-names><![CDATA[Pedro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Orozco Gutiérrez]]></surname>
<given-names><![CDATA[Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Ángeles Pedregal Departamento de Neonatología ]]></institution>
<addr-line><![CDATA[ Ciudad de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad La Salle Facultad Mexicana de Medicina ]]></institution>
<addr-line><![CDATA[ Ciudad de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Nuevo Sanatorio Durango  ]]></institution>
<addr-line><![CDATA[ Ciudad de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad La Salle Facultad Mexicana de Medicina ]]></institution>
<addr-line><![CDATA[ Ciudad de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad de Michigan Departamento de Bioestadística ]]></institution>
<addr-line><![CDATA[Ann Arbor ]]></addr-line>
<country>USA</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2020</year>
</pub-date>
<volume>18</volume>
<numero>3</numero>
<fpage>264</fpage>
<lpage>267</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-72032020000300264&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-72032020000300264&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-72032020000300264&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Objetivo:  Determinar el contenido sanguíneo del cordón umbilical postnacimiento y su relación con el tamaño y el tiempo de corte mediante el análisis de las posibles implicaciones clínicas.  Material y métodos:  Se determinó la cantidad de sangre residual en el cordón umbilical de 252 neonatos en relación con la edad gestacional, la longitud del cordón y el tiempo de corte.  Resultados:  El contenido promedio de sangre en el cordón fue de 1.2 mL/kg/peso o 0.19 mL/cm de cordón. En los cordones mayores de 25 cm encontramos 2.29 mL/kg y en los menores de 25 cm 0.79 mL/kg. Con corte tardío se obtuvo 2.27 mL/kg y con corte temprano 2.34 mL/kg. En los prematuros la cantidad de sangre con cordón &lt; a 25 cm fue de 0.89 mL/kg y con cordón &gt; 25 cm de 3.09 mL/kg, aunque sólo fueron cinco niños de este grupo. En los de término con cordón &lt; 25 cm fue de 0.78 mL/kg y &gt; a 25 cm de 2.22 mL/kg.  Conclusiones:  El cordón umbilical con longitud mayor de 25 cm puede proporcionar una transfusión de 2.29 mL/kg, el tiempo de corte tiene poco impacto en la cantidad total obtenida.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Objective:  Determine the blood content of the post-birth umbilical cord and its relation to size and cut-off time as well as analyze the possible clinical implications.  Material and methods:  The amount of residual blood in the umbilical cord of 252 infants was used to estimate confidence intervals of the mean blood content of the post-birth umbilical cord in relation to gestational age, cord length and cut time.  Results:  The average blood content in the cord was 1.2 mL/kg/weight or 0.19 mL/cm in the 252 patients. In cords that are greater than 25 cm long we find 2.29 mL/kg and in those less than 25 cm long we find 0.79 mL/kg. When using late clamping we obtained 2.27 mL/kg and with an early cut 2.34 mL/kg. In premature infants, the amount of blood with cord length &lt; 25 cm was 0.89 mL/kg and with cord length &gt; 25 cm of 3.09 mL/kg although there were only five children in this group. In the case of full-term births with cord length &lt; 25 cm, the amount of blood was 0.78 mL/kg and 2.22 mL/kg for the case of cord length &gt; 25 cm.  Conclusions:  The umbilical cord with a length greater than 25 cm can provide a transfusion of 2.29 mL/kg, cord clamping time has little impact on the blood total amount obtained.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Sangre de cordón]]></kwd>
<kwd lng="es"><![CDATA[ordeñamiento del cordón umbilical]]></kwd>
<kwd lng="es"><![CDATA[reanimación neonatal]]></kwd>
<kwd lng="en"><![CDATA[Cord blood]]></kwd>
<kwd lng="en"><![CDATA[umbilical cord milking]]></kwd>
<kwd lng="en"><![CDATA[neonatal resuscitation]]></kwd>
</kwd-group>
</article-meta>
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