<?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>0016-3813</journal-id>
<journal-title><![CDATA[Gaceta médica de México]]></journal-title>
<abbrev-journal-title><![CDATA[Gac. Méd. Méx]]></abbrev-journal-title>
<issn>0016-3813</issn>
<publisher>
<publisher-name><![CDATA[Academia Nacional de Medicina de México A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0016-38132021000500554</article-id>
<article-id pub-id-type="doi">10.24875/gmm.21000076</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Validación de un tamiz precoz de preeclampsia en una población mexicana]]></article-title>
<article-title xml:lang="en"><![CDATA[Validation of a preeclampsia early screening test in a Mexican population]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Oviedo-Cruz]]></surname>
<given-names><![CDATA[Héctor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carrasco-Blancas]]></surname>
<given-names><![CDATA[Erika R.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cortes-Martínez]]></surname>
<given-names><![CDATA[Marco A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Español de México Centro Médico para Atención Fetal Especializada Departamento de Medicina Materno-Fetal]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Laboratorio CEMAFE S.A. de C.V Departamento de Bioquímica y Calidad ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>10</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>10</month>
<year>2021</year>
</pub-date>
<volume>157</volume>
<numero>5</numero>
<fpage>554</fpage>
<lpage>563</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0016-38132021000500554&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0016-38132021000500554&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0016-38132021000500554&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Antecedentes: Ninguna prueba de tamiz de preeclampsia ha sido validada en nuestro país.  Objetivo: Evaluar el ajuste y rendimiento del algoritmo bayesiano FMF 4.0 en una población mexicana.  Método: Estudio de cohorte en embarazos de feto único, según el modelo de riesgos en competencia para preeclampsia. El riesgo a priori se calculó por historia clínica. La presión arterial media (PAM), el índice de pulsatilidad medio de la arteria uterina (IPmAUt) y la proteína plasmática A asociada al embarazo (PAPP-A) se midieron a las 11-14 semanas de gestación con metodología estandarizada. El valor de cada marcador se transformó en múltiplos de la mediana (MoM) por el algoritmo originala y el corregidob a la población. Se aplicaron la distribución normal multivariante y el teorema de Bayes para las probabilidades posprueba.  Resultados: Hubo un 5.0% (40/807) de preeclampsia. Las distribuciones sin preeclampsia fueron PAM 0.927a vs. 0.991b, UtAmPI 0.895a vs. 1.030b y PAPP-A 0.815a vs. 0.963b (p &lt; 0.001). El área bajo la curva fue 0.821a vs. 0.823b. Para una detección del 69%, los puntos de corte fueron 1 en 240a y 1 en 120b, a falsos positivos del 31%a y 29%b.  Conclusiones: El modelo debe ajustarse a la población diana.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: No preeclampsia screening test has been validated in our country.  Objective: To assess the fit and performance of the FMF 4.0 Bayesian algorithm in a Mexican population.  Method: Cohort study in singleton pregnancies, according to the competing risks model for preeclampsia. A priori risk was calculated based on medical history. Mean blood pressure (MBP), uterine artery mean pulsatility index (UtAmPI) and pregnancy-associated plasma protein A (PAPP-A) were measured at 11-14 weeks of gestation using standardized methodology. The value of each marker was transformed into multiples of the median (MoM) by the originala algorithm and by the population correctionb. Multivariate normal distribution and Bayes theorem were applied to obtain the post-test probabilities.  Results: There was 5.0% (40/807) preeclampsia. Distributions in women without preeclampsia were MBP = 0.927a vs. 0.991b, UtAmPI = 0.895a vs. 1.030b, and PAPP-A = 0.815a vs 0.963b (p &lt; 0.001). The AUC was 0.821a and 0.823b. For a detection rate of 69%, cutoff points were 1 in 240a and 1 in 120b, with false positive rates of 31%a and 29%b.  Conclusions: The model has to be adjusted to the target population.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Preeclampsia]]></kwd>
<kwd lng="es"><![CDATA[Pruebas de tamiz en suero materno]]></kwd>
<kwd lng="es"><![CDATA[Ecografía Doppler]]></kwd>
<kwd lng="es"><![CDATA[Presión arterial]]></kwd>
<kwd lng="es"><![CDATA[Control prenatal]]></kwd>
<kwd lng="es"><![CDATA[México]]></kwd>
<kwd lng="en"><![CDATA[Preeclampsia]]></kwd>
<kwd lng="en"><![CDATA[Maternal serum screening tests]]></kwd>
<kwd lng="en"><![CDATA[Doppler ultrasonography]]></kwd>
<kwd lng="en"><![CDATA[Blood pressure]]></kwd>
<kwd lng="en"><![CDATA[Prenatal care]]></kwd>
<kwd lng="en"><![CDATA[Mexico]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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