<?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>1665-1146</journal-id>
<journal-title><![CDATA[Boletín médico del Hospital Infantil de México]]></journal-title>
<abbrev-journal-title><![CDATA[Bol. Med. Hosp. Infant. Mex.]]></abbrev-journal-title>
<issn>1665-1146</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Salud, Hospital Infantil de México Federico Gómez]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1665-11462023000300177</article-id>
<article-id pub-id-type="doi">10.24875/bmhim.23000029</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Comparison between Wright and Shukla formulas: which is better for the placement of umbilical catheters in newborns &#8804; 1500 g?]]></article-title>
<article-title xml:lang="es"><![CDATA[Comparación entre las fórmulas de Wright y de Shukla: ¿cuál es mejor para la colocación de catéteres umbilicales en recién nacidos &#8804; 1500 g?]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castañeda-Pérez]]></surname>
<given-names><![CDATA[Diana A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villegas-Álvarez]]></surname>
<given-names><![CDATA[Carolina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Román-Flores]]></surname>
<given-names><![CDATA[Adolfo San]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pierdant-Pérez]]></surname>
<given-names><![CDATA[Mauricio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Herbert-Anaya]]></surname>
<given-names><![CDATA[Daniel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Reyes-Vaca]]></surname>
<given-names><![CDATA[Jorge G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ayala-González]]></surname>
<given-names><![CDATA[Jorge F.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Escalante-Padrón]]></surname>
<given-names><![CDATA[Francisco J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Dr. Ignacio Morones Prieto Central Hospital Department of Neonatal Intensive Care Unit ]]></institution>
<addr-line><![CDATA[San Luis Potosí ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de San Luis Potosí School of Medicine Coordination of Educational Innovation in Health]]></institution>
<addr-line><![CDATA[San Luis Potosí ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Central Hospital Dr. Ignacio Morones Prieto Department of Radiology and Image ]]></institution>
<addr-line><![CDATA[San Luis Potosí ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2023</year>
</pub-date>
<volume>80</volume>
<numero>3</numero>
<fpage>177</fpage>
<lpage>182</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-11462023000300177&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-11462023000300177&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-11462023000300177&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: Intravascular venous (VUC) or arterial (AUC) umbilical catheter placement is the most frequent invasive procedure in the neonatal intensive care unit (NICU). Either Wright&#8217;s or Shukla&#8217;s formula is used to introduce the catheters. However, Shukla&#8217;s formula is associated with incorrect insertion, especially for newborns &lt; 1500 g. This study aimed to determine by chest X-ray if Wright&#8217;s formula is better than Shukla&#8217;s formula for the correct placement of umbilical catheters in newborns &#8804; 1500 g.  Methods: We included patients admitted to the NICU of a secondary-level hospital between 2021-2022 who received VUC or AUC through the Wright or Shukla formulas.  Results: A total of 129 newborns were included: 78 with VUC and 51 with AUC. In VUC, 50% with Wright and 36.8% with Shukla formulas had the correct location, (p = 0.24). In AUC, 56.6 % with Wright and 52.4% with Shukla formulas were placed correctly placed, (p = 0.76). VUC with weight &lt; 1000 g were correctly placed in 36.4% with Wright and 33.3% with Shukla formulas (p = 0.58). VUC in newborns &gt; 1000 g were correctly placed in 66.6% with Wright and 38.4% with Shukla formulas (p = 0.065). AUC in newborns &lt; 1000 g were correctly placed in 45% using Wright and 42.9% Shukla formulas (p = 0.63). AUC in newborns &gt; 1000 g were correctly placed in 80% using Wright and 57.1% Shukla formulas (p = 0.23).  Conclusions: We found 13% more correctly placed VUC using Wright&#8217;s formula. Moreover, Wright&#8217;s formula was 29% above Shukla&#8217;s VUC placement in neonates &gt; 1000 g, although there was no significant difference due to the sample size.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción: La colocación de catéteres intravasculares venosos umbilicales (CVU) y arteriales (CAU) es el procedimiento invasivo más frecuente en la unidad de cuidados intensivos neonatales (UCIN). Para introducirlos se utilizan las fórmulas de Wright y de Shukla, aunque esta última podría estar asociada con una inserción incorrecta, especialmente en neonatos &lt; 1500 g. El objetivo de este estudio fue determinar mediante radiografía de tórax cuál fórmula es mejor para la correcta colocación de catéteres umbilicales en recién nacidos &#8804; 1500 g.  Métodos: Se incluyeron los pacientes ingresados en la UCIN de un hospital de segundo nivel entre 2021-2022 que recibieron CVU o CAU mediante las fórmulas de Wrigth o Shukla.  Resultados: Se incluyeron en total 129 recién nacidos: 78 CVU y 51 CAU. En CVU, Wright 50% y Shukla 36.8% tuvieron localización correcta, p = 0.24. En las CAU, Wright 56.6% y Shukla 52.4% tenían una ubicación correcta, p = 0.76. En CVU con peso &lt; 1000 g, Wright 36.4% y Shukla 33.3% bien situados, p = 0.58. En CVU &gt; 1000 g, Wright 66.6% y Shukla 38.4% bien situados, p = 0.065. En CAU &lt; 1000 g, Wright 45% y Shukla 42.9%, p = 0.63. En CAU con peso &gt; 1000 g, Wright 80% y Shukla 57.1%, p = 0.23.  Conclusiones: La colocación del CVU fue 13% mejor con la fórmula de Wright. La fórmula de Wright superó en el 29% la colocación del CVU en los neonatos &gt; 1000 g en comparación con la de Shukla, aunque no hubo diferencia significativa debido al tamaño de la muestra.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Umbilical veins]]></kwd>
<kwd lng="en"><![CDATA[Umbilical arteries]]></kwd>
<kwd lng="en"><![CDATA[Peripheral catheterization]]></kwd>
<kwd lng="en"><![CDATA[Umbilicus]]></kwd>
<kwd lng="en"><![CDATA[Infant]]></kwd>
<kwd lng="en"><![CDATA[Very low birth weight]]></kwd>
<kwd lng="es"><![CDATA[Venas umbilicales]]></kwd>
<kwd lng="es"><![CDATA[Arterias umbilicales]]></kwd>
<kwd lng="es"><![CDATA[Cateterismo periférico]]></kwd>
<kwd lng="es"><![CDATA[Recién nacido de muy bajo peso]]></kwd>
<kwd lng="es"><![CDATA[Ombligo]]></kwd>
</kwd-group>
</article-meta>
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