<?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>S0300-90412024001000397</article-id>
<article-id pub-id-type="doi">10.24245/gom.v92i10.18</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Cociente proteína-creatinina en orina como método de estimación de la proteinuria durante el puerperio no patológico]]></article-title>
<article-title xml:lang="en"><![CDATA[Protein/creatinine ratio in urine as a method of estimating proteinuria during the non-pathological puerperium]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Marrero]]></surname>
<given-names><![CDATA[Francisco Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lira Espíndola]]></surname>
<given-names><![CDATA[Daniela Abigail]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vargas Luna]]></surname>
<given-names><![CDATA[María Ximena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Merlín Mendoza]]></surname>
<given-names><![CDATA[Karen Guadalupe]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aracil Morales]]></surname>
<given-names><![CDATA[Nazilli Patricia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Juárez Benítez]]></surname>
<given-names><![CDATA[Michelle]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado Hospital Regional 1° de Octubre ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital General de México Dr. Eduardo Liceaga  ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2024</year>
</pub-date>
<volume>92</volume>
<numero>10</numero>
<fpage>397</fpage>
<lpage>406</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0300-90412024001000397&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0300-90412024001000397&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0300-90412024001000397&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  OBJETIVO:  Determinar la relación proteína-creatinina, como método más práctico, en mujeres sanas inmediatamente antes de la finalización del embarazo (parto o cesárea) y en el puerperio, a fin de verificar su comportamiento y utilidad como método de cuantificación de la proteinuria durante estas etapas del estado grávido puerperal.  MATERIALES Y MÉTODOS:  Estudio de cohorte observacional, longitudinal, prospectivo y analítico llevado a cabo entre noviembre del 2023 y abril del 2024 en el Hospital Regional 1° de Octubre, Ciudad de México, en pacientes con embarazo a término, sin comorbilidades, a quienes se les tomaron cuatro muestras de orina en distintos momentos (antes de la finalización del embarazo, y en las tres etapas del puerperio) mediante cateterización vesical, con sonda para determinación del cociente.  RESULTADOS:  En 110 pacientes se determinó el cociente proteína-creatinina antes del puerperio con una media basal de 0.17 ± 0.07, puerperio inmediato 0.32 ± 0.17, puerperio mediato 0.33 ± 0.20. En el puerperio tardío los valores se restablecieron hasta la normalidad: 0.13 ± 0.07. En el 93.6% de las pacientes esta elevación refleja diferencias significativas (p &lt; 0.001). El 63.3% de las pacientes tuvo elevación del cociente proteína-creatinina en el puerperio. En la cesárea en trabajo de parto hay mayor incremento del cociente proteína-creatinina en comparación con el trabajo de parto o la cesárea programada (p &lt; 0.001). No hubo diferencia significativa entre la elevación del cociente proteína-creatinina y su relación con el IMC.  CONCLUSIONES:  Durante el puerperio inmediato y mediato el cociente proteína-creatinina se eleva a valores significativos (&gt; 0.3) por el aumento fisiológico de la proteinuria. Por tratarse de un estudio longitudinal se determinó que el cociente proteína-creatinina se normaliza en el puerperio tardío.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  OBJECTIVE:  To determine the protein-creatinine ratio, as the most practical method, in healthy women immediately before the end of pregnancy (delivery or caesarean section) and in the puerperium, to verify its behavior and usefulness as a method for quantifying proteinuria during these stages of the puerperium.  MATERIALS AND METHODS:  Observational, longitudinal, prospective and analytical cohort study carried out between November 2023 and April 2024 at the Hospital Regional 1° de Octubre, Mexico City, in patients with term pregnancy, without comorbidities, who had four urine samples collected at different times (before the end of pregnancy and in the three stages of the puerperium) by bladder catheterisation, with catheter for the determination of the quotient.  RESULTS:  In 110 patients the protein-creatinine ratio was determined before the puerperium with a basal mean of 0.17 ± 0.07, immediate puerperium 0.32 ± 0.17, mid-puerperium 0.33 ± 0.20. In the late puerperium the values returned to normal: 0.13 ± 0.07. This increase was significant in 93.6% of the patients (p &lt; 0.001). The protein-creatinine ratio was elevated in the puerperium in 63.3% of patients. There is a greater increase in the protein-creatinine ratio in caesarean section in labour compared to caesarean section in labour or planned caesarean section (p &lt; 0.001). There was no significant difference between the increase in protein-creatinine ratio and its relation to BMI.  CONCLUSIONS:  During the immediate and mid-puerperium, the protein-creatinine ratio rises to significant values (&gt; 0.3) due to the physiological increase in proteinuria. As this was a longitudinal study, the protein-creatinine ratio was found to normalise in the late puerperium.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Proteinuria]]></kwd>
<kwd lng="es"><![CDATA[cociente proteína-creatinina]]></kwd>
<kwd lng="es"><![CDATA[puerperio]]></kwd>
<kwd lng="es"><![CDATA[preeclampsia]]></kwd>
<kwd lng="es"><![CDATA[embarazo a término]]></kwd>
<kwd lng="en"><![CDATA[Proteinuria]]></kwd>
<kwd lng="en"><![CDATA[Protein/creatinine ratio]]></kwd>
<kwd lng="en"><![CDATA[Postpartum]]></kwd>
<kwd lng="en"><![CDATA[Preeclampsia]]></kwd>
<kwd lng="en"><![CDATA[Term pregnancy]]></kwd>
</kwd-group>
</article-meta>
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