<?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>S0187-53372024000200003</article-id>
<article-id pub-id-type="doi">10.24875/per.24000015</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Procalcitonina y signos clínicos a las 24 horas como predictores de sepsis neonatal temprana]]></article-title>
<article-title xml:lang="en"><![CDATA[Procalcitonin and clinical signs at 24 hours as predictors of early neonatal sepsis]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Orozco-Rod]]></surname>
<given-names><![CDATA[Gina E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Canseco-Herrera]]></surname>
<given-names><![CDATA[Mariana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ferreira-Jaime]]></surname>
<given-names><![CDATA[Tonatiuh F.]]></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 contrib-type="author">
<name>
<surname><![CDATA[Canul-Euan]]></surname>
<given-names><![CDATA[Arturo A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad La Salle Facultad Mexicana de Medicina ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Nuevo Sanatorio Durango Departamento de Pediatría ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Nacional de Perinatología Isidro Espinosa de los Reyes Departamento de Bioinformática y Análisis Estadístico ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Instituto Nacional de Perinatología Isidro Espinosa de los Reyes Departamento de Neurobiología del Desarrollo ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2024</year>
</pub-date>
<volume>38</volume>
<numero>2</numero>
<fpage>46</fpage>
<lpage>52</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-53372024000200003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-53372024000200003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-53372024000200003&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Antecedentes: Globalmente, el 15% de las muertes neonatales son causadas por sepsis, con consecuencias graves para el recién nacido. Las manifestaciones clínicas son inespecíficas y heterogéneas. Los biomarcadores son una herramienta útil de diagnóstico y manejo oportuno.  Objetivo: Evaluar las concentraciones de procalcitonina a las 24 horas como marcador para el diagnóstico de sepsis neonatal temprana en función de las manifestaciones clínicas presentadas.  Método: Se realizó un estudio transversal, retrospectivo, descriptivo y observacional en neonatos con diagnóstico de sepsis neonatal temprana con procalcitonina a las 24 horas de vida &gt; 2 ng/ml, para valorar el desempeño de la procalcitonina para cada desenlace clínico usamos curvas ROC y área bajo la curva (AUC). Se consideró como significativo un grado de significación p &lt; 0.05.  Resultados: Se obtuvo una muestra de 88 neonatos. Las manifestaciones clínicas más frecuentes fueron: dificultad respiratoria (45.5%), hipoxia (19.3%) y mala alimentación (8%). La mediana de las concentraciones de procalcitonina fue 15.1 ng/ml. Los mejores predictores para sepsis neonatal temprana fueron: apnea AUC 0.67 (IC95%: 0.32-1; sensibilidad 100%; p = 0.44), mala alimentación AUC 0.65 (IC95%: 0.48-0.82; sensibilidad 100%; p = 0.25) e hipoxia AUC 0.56 (IC95%: 0.39-0.72; sensibilidad 23.5% y especificidad 98.5%; p = 0.004).  Conclusiones: La mediana de las concentraciones de procalcitonina a las 24 horas fue 15.1 ng/ml y los mejores predictores para el diagnóstico de sepsis fueron apnea, mala alimentación e hipoxia.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: Globally, 15% of neonatal deaths are caused by sepsis, with severe consequences for the newborn. Clinical manifestations are nonspecific and heterogeneous. Biomarkers are a useful tool for diagnosis and timely management.  Objective: To evaluate procalcitonin concentrations at 24 hours as a marker for the diagnosis of early neonatal sepsis based on the clinical manifestations presented.  Method: A cross-sectional, retrospective, descriptive and observational study was performed in neonates diagnosed with early neonatal sepsis with procalcitonin at 24 hours of life &gt; 2 ng/ml, to assess the performance of procalcitonin for each clinical outcome using ROC curves and area under the curve (AUC). A p-value &lt; 0.05 was considered significant.  Results: A sample of 88 neonates was obtained. The most frequent clinical manifestations were respiratory distress (45.5%), hypoxia (19.3%) and poor feeding (8%). Median procalcitonin concentrations were 15.1 ng/ml. The best predictors for early neonatal sepsis were apnea AUC 0.67 (95% CI: 0.32-1; sensitivity 100%; p = 0.44), poor feeding AUC 0.65 (95% IC: 0.48-0.82; sensitivity 100%; p = 0.25), and hypoxia AUC 0.56 (95% CI: 0.39-0.72; sensitivity 23.5% and specificity 98.5%; p = 0.004).  Conclusions: Median procalcitonin concentrations at 24 hours were 15.1 ng/ml and the best predictors were apnea, poor nutrition and hypoxia.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Biomarcador]]></kwd>
<kwd lng="es"><![CDATA[Infección]]></kwd>
<kwd lng="es"><![CDATA[Recién nacido]]></kwd>
<kwd lng="es"><![CDATA[Procalcitonina]]></kwd>
<kwd lng="es"><![CDATA[Manifestaciones clínicas]]></kwd>
<kwd lng="en"><![CDATA[Biomarker]]></kwd>
<kwd lng="en"><![CDATA[Infection]]></kwd>
<kwd lng="en"><![CDATA[Newborn]]></kwd>
<kwd lng="en"><![CDATA[Procalcitonin]]></kwd>
<kwd lng="en"><![CDATA[Clinical manifestations]]></kwd>
</kwd-group>
</article-meta>
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