<?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>S1665-11462022000200123</article-id>
<article-id pub-id-type="doi">10.24875/bmhim.21000061</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Thrombotic thrombocytopenic purpura associated with COVID-19 in a critically ill child: a Peruvian case report]]></article-title>
<article-title xml:lang="es"><![CDATA[Púrpura trombocitopénica trombótica asociada con COVID-19 en un niño críticamente enfermo: reporte de un caso peruano]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Domínguez-Rojas]]></surname>
<given-names><![CDATA[Jesús]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Campano]]></surname>
<given-names><![CDATA[William]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tasayco]]></surname>
<given-names><![CDATA[Jaime]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Siu-Lam]]></surname>
<given-names><![CDATA[Andrea]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ortega-Ocas]]></surname>
<given-names><![CDATA[Cesia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Atamari-Anahui]]></surname>
<given-names><![CDATA[Noé]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Salud del Niño-Breña Servicio de Unidad de Cuidados Intensivos Pediátricos ]]></institution>
<addr-line><![CDATA[Lima ]]></addr-line>
<country>Peru</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital Nacional Edgardo Rebagliati Martins Servicio de Pediatría Clínica ]]></institution>
<addr-line><![CDATA[Lima ]]></addr-line>
<country>Peru</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Hospital Nacional Edgardo Rebagliati Martins Servicio de Hematología Pediátrica ]]></institution>
<addr-line><![CDATA[Lima ]]></addr-line>
<country>Peru</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad San Ignacio de Loyola Vicerrectorado de Investigación Unidad de Investigación para la Generación y Síntesis de Evidencias en Salud]]></institution>
<addr-line><![CDATA[Lima ]]></addr-line>
<country>Peru</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2022</year>
</pub-date>
<volume>79</volume>
<numero>2</numero>
<fpage>123</fpage>
<lpage>128</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-11462022000200123&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-11462022000200123&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-11462022000200123&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: Acquired thrombotic thrombocytopenic purpura (TTP) is a rare disease. In middle and low-income countries, specific resources are required for its diagnosis due to the lack of diagnostic tests and the variable response to plasma exchange, especially in the context of the new SARS-CoV-2 pandemic  Case report: We report the case of a 9-year-old male Hispanic patient with SARS-CoV-2 infection, atypical presentation, and multisystem involvement, thrombotic microangiopathy with dermal manifestations, hematologic, renal, and neurologic involvement. The patient was followed up after SARS-CoV-2 infection, the PLASMIC score was applied, and a genetic study was performed. Ventilation and hemodynamic support, corticotherapy, immunoglobulins, plasma exchange, renal replacement therapy, and monoclonal antibodies were given without favorable response  Conclusions: TTP associated with SARS-CoV-2 in the pediatric population is rare. However, resources for the diagnosis, support, and management of patients with TTP are required to avoid fatal outcomes.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción: La púrpura trombocitopénica trombótica (PTT) adquirida es una enfermedad poco frecuente. En los países de mediano y bajo estatus económico se requieren recursos para el diagnóstico de la PTT, debido a la falta de pruebas diagnósticas y a la respuesta variable al recambio plasmático, especialmente en el contexto de la pandemia por el nuevo SARS-CoV-2  Caso clínico: Paciente de sexo masculino, de 9 años, hispano, con infección por SARS-CoV-2, presentación atípica y afectación multisistémica, microangiopatía trombótica con manifestaciones dérmicas, y compromiso hematológico, renal y neurológico. Se dio seguimiento posinfección por SARS-CoV-2, se aplicó la escala PLASMIC y se realizó un estudio genético. Se aplicaron soporte ventilatorio y hemodinámico, corticoterapia, inmunoglobulinas, recambio plasmático, terapia de reemplazo renal y anticuerpos monoclonales, sin respuesta favorable  Conclusiones: La PTT asociada al SARS-CoV-2 en la población pediátrica es poco frecuente. Aun así, se requieren recursos para el diagnóstico, el soporte y el manejo de los pacientes con PTT para evitar desenlaces fatales.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Thrombotic thrombocytopenic purpura]]></kwd>
<kwd lng="en"><![CDATA[COVID-19]]></kwd>
<kwd lng="en"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="en"><![CDATA[Child]]></kwd>
<kwd lng="en"><![CDATA[Peru]]></kwd>
<kwd lng="es"><![CDATA[Púrpura trombocitopénica trombótica]]></kwd>
<kwd lng="es"><![CDATA[COVID-19]]></kwd>
<kwd lng="es"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="es"><![CDATA[Niño]]></kwd>
<kwd lng="es"><![CDATA[Perú]]></kwd>
</kwd-group>
</article-meta>
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