<?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>S1665-11462024000200090</article-id>
<article-id pub-id-type="doi">10.24875/bmhim.23000169</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Gravedad y complicaciones en lactantes con infección por el virus respiratorio sincitial posterior a la pandemia por SARS-CoV-2]]></article-title>
<article-title xml:lang="en"><![CDATA[Severity and complications in infants with respiratory syncytial virus infection after the SARS-CoV-2 pandemic]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gastelum-Bernal]]></surname>
<given-names><![CDATA[Melissa A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mondragón-González]]></surname>
<given-names><![CDATA[Luz I.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Peñuñuri-Ballesteros]]></surname>
<given-names><![CDATA[Jhoanna M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Félix-Ramos]]></surname>
<given-names><![CDATA[Gerardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gómez-Jiménez]]></surname>
<given-names><![CDATA[Isaac A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cadena Mejía]]></surname>
<given-names><![CDATA[Luis R.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Frías-Mendívil]]></surname>
<given-names><![CDATA[Mauricio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Infantil del Estado de Sonora Departamento de Pediatría ]]></institution>
<addr-line><![CDATA[Hermosillo Sonora]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital Infantil del Estado de Sonora Servicio de Urgencias Pediátricas ]]></institution>
<addr-line><![CDATA[Hermosillo Sonora]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Hospital Infantil del Estado de Sonora Investigación y Calidad Dirección de Enseñanza]]></institution>
<addr-line><![CDATA[Hermosillo Sonora]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2024</year>
</pub-date>
<volume>81</volume>
<numero>2</numero>
<fpage>90</fpage>
<lpage>96</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-11462024000200090&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-11462024000200090&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-11462024000200090&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción: Posterior a la pandemia por SARS-CoV-2 se ha observado un incremento en la hospitalización por virus respiratorio sincitial (VRS), con mayores complicaciones. Se han encontrado alteraciones extrapulmonares asociadas, disfunción biventricular y lesión renal aguda, entre otras. El objetivo de este estudio fue analizar la evolución y las complicaciones en niños hospitalizados con enfermedad respiratoria de vías bajas secundaria a infección por VRS tras la pandemia de COVID-19.  Métodos: Se incluyeron todos los menores de 2 años que ingresaron al servicio de urgencias con infección por VRS. Se analizaron las características clínicas, la necesidad de oxígeno suplementario, el uso de aminas, el índice de angina renal y el requerimiento de terapia de sustitución renal. Se realizó ecografía pulmonar al ingreso. En el análisis estadístico, para las variables cuantitativas se determinaron la media y la desviación estándar, y para las variables cualitativas la frecuencia y el porcentaje. Se evaluaron las diferencias de la distribución con la prueba exacta de Fisher.  Resultados: Hubo 45 pacientes con infección por VRS. El 26.7% requirieron ventilación mecánica invasiva y el 11.1% diálisis peritoneal. La letalidad fue de cuatro casos, tres de ellos menores de 12 meses con puntuación de LUS &gt; 7; esto contrasta con el 90.2% de los sobrevivientes con puntaje &lt; 7 (p = 0.0004).  Conclusiones: Se observó un aumento en la incidencia de bronquiolitis tras la pandemia, en más de la mitad de los casos con cuadros de moderados a graves, y todos requirieron oxígeno suplementario al ingreso. La lesión renal aguda fue la manifestación extrapulmonar más frecuente.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: After the SARS-CoV-2 pandemic, there has been an increase in hospitalization for lower respiratory infection secondary to respiratory syncytial virus (RSV), with greater complications. Associated extrapulmonary alterations, biventricular dysfunction, acute kidney injury, among others, have been found. The objective of this study was to analize the evolution and complications in hospitalized children with lower respiratory infection secondary to RSV after COVID-19 pandemic.  Methods: All pediatric patients under 2 years of age admitted to the emergency department with RSV infection were included. Clinical characteristics, need for supplemental oxygen, use of amines, renal angina index, and requirement for renal replacement therapy were analyzed. Lung ultrasound was performed upon admission. Statistical analysis was carried out for the quantitative variables by means of mean and standard deviation, and qualitative variables by frequency and percentage. Differences in the distribution were evaluated with Fisher’s exact distribution.  Results: 45 patients with RSV infection were identified, 26.7% required invasive mechanical ventilation and 11.1% requiered peritoneal dialysis. Fatality was observed in four cases, three of these younger than 12 months with a LUS score &gt; 7; contrasts with 90.2% of survivors with a score &lt; 7 (p = 0.0004).  Conclusions: An increase in the incidence of bronchiolitis after pandemic was observed, with more than half having moderate to severe symptoms and requiring supplemental oxygen support in all patients upon admission. Acute kidney injury is the most common extrapulmonary manifestation.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Niños]]></kwd>
<kwd lng="es"><![CDATA[Virus respiratorio sincitial]]></kwd>
<kwd lng="es"><![CDATA[Cuidados intensivos]]></kwd>
<kwd lng="es"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="en"><![CDATA[Children]]></kwd>
<kwd lng="en"><![CDATA[Respiratory syncytial virus]]></kwd>
<kwd lng="en"><![CDATA[Critical care]]></kwd>
<kwd lng="en"><![CDATA[SARS-CoV-2]]></kwd>
</kwd-group>
</article-meta>
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