<?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>0185-3252</journal-id>
<journal-title><![CDATA[Anales médicos (México, Ciudad de México)]]></journal-title>
<abbrev-journal-title><![CDATA[An. méd.]]></abbrev-journal-title>
<issn>0185-3252</issn>
<publisher>
<publisher-name><![CDATA[Asociación Médica del Centro Médico ABC]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0185-32522025000500012</article-id>
<article-id pub-id-type="doi">10.24875/amh.23000031</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Hipopotasemia y alcalosis metabólica secundaria a uso de piperacilina-tazobactam]]></article-title>
<article-title xml:lang="en"><![CDATA[Hypokalemia and metabolic alkalosis secondary to piperacillin-tazobactam use]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Macías-Villa]]></surname>
<given-names><![CDATA[Héctor L.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Oliva Meza-Hernández]]></surname>
<given-names><![CDATA[Óscar M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Cadena]]></surname>
<given-names><![CDATA[Walter A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro Médico ABC Servicio de Nefrología Pediátrica ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Centro Médico ABC Servicio de Terapia Intensiva Pediátrica ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Hospital Español Departamento de Neonatología ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2025</year>
</pub-date>
<volume>70</volume>
<fpage>59</fpage>
<lpage>61</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0185-32522025000500012&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0185-32522025000500012&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0185-32522025000500012&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Se presenta el caso de una lactante de 2 meses que ingresa a urgencias con diagnóstico de neumonía adquirida en la comunidad, con hipopotasemia grave y alcalosis metabólica asociada al uso de piperacilina-tazobactam. A las 48 horas de haber suspendido este fármaco presenta mejoría y normalización de los valores de potasio. El diagnóstico de hipopotasemia grave y alcalosis metabólica asociada a piperacilina-tazobactam se estableció tras haber excluido otras causas. La presencia de hipopotasemia es un efecto adverso grave que se puede presentar en pacientes que reciben piperacilina-tazobactam, por lo que se tiene que tener en consideración con el uso de este antibiótico.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract We present the case of a 2-month-old female patient admitted to the emergency department with a diagnosis of community-acquired pneumonia, with severe hypokalemia and metabolic alkalosis associated with the use of piperacillin-tazobactam. 48 hours after suspending the latter, he presented improvement and normalization of potassium values. The diagnosis of severe hypokalemia and metabolic alkalosis associated with this drug was made, in this case, after having excluded other causes. The presence of hypokalemia is a severe adverse effect that can occur in patients who are being managed with piperacillin-tazobactam, so it must be taken into consideration with the use of this antibiotic.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Hipopotasemia]]></kwd>
<kwd lng="es"><![CDATA[Alcalosis metabólica]]></kwd>
<kwd lng="es"><![CDATA[Piperacilina-tazobactam]]></kwd>
<kwd lng="en"><![CDATA[Hypokalemia]]></kwd>
<kwd lng="en"><![CDATA[Metabolic alkalosis]]></kwd>
<kwd lng="en"><![CDATA[Piperacillin-tazobactam]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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