<?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>0375-0760</journal-id>
<journal-title><![CDATA[Revista Cubana de Medicina Tropical]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Cubana Med Trop]]></abbrev-journal-title>
<issn>0375-0760</issn>
<publisher>
<publisher-name><![CDATA[Centro Nacional de Información de Ciencias Médicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0375-07602022000300004</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Variación de la susceptibilidad a antimicrobianos en aislados clínicos de Klebsiella pneumoniae y Escherichia coli de pacientes hospitalizados]]></article-title>
<article-title xml:lang="en"><![CDATA[Variation of antimicrobial susceptibility in clinical isolates of Klebsiella pneumoniae and Escherichia coli in inpatients]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cabrera Rodríguez]]></surname>
<given-names><![CDATA[Luis Enrique]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Miralles Suarez]]></surname>
<given-names><![CDATA[Ana Ibis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ones Roque]]></surname>
<given-names><![CDATA[Rosabel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Torres-Herrera]]></surname>
<given-names><![CDATA[Yulian]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pantaleón Hernández]]></surname>
<given-names><![CDATA[Magela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Clínico-Quirúrgico Docente Aleida Fernández Chardiet Departamento de Microbiología Clínica ]]></institution>
<addr-line><![CDATA[Güines Mayabeque]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<volume>74</volume>
<numero>3</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0375-07602022000300004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0375-07602022000300004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0375-07602022000300004&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción: La presencia de enterobacterias multirresistentes en los hospitales es cada vez más frecuente.  Objetivos: Describir la variación de la susceptibilidad a los antimicrobianos en aislados de Klebsiella pneumoniae y Escherichia coli e identificar la frecuencia de aislados multirresistentes.  Métodos: Estudio descriptivo retrospectivo realizado entre el 1 de enero de 2018 y 31 de diciembre de 2021. Se estudió la susceptibilidad a los antimicrobianos por el método de difusión de discos Bauer-Kirby a 220 aislados (111 de K. pneumoniae y 109 de E. coli) obtenidos de muestras clínicas (sangre, lesiones de piel, catéteres vasculares, secreciones traqueobronquiales y de herida quirúrgica) de pacientes hospitalizados en el Hospital Clínico-Quirúrgico Docente Aleida Fernández Chardiet, provincia Mayabeque, Cuba.  Resultados:  Durante los 4 años de estudio, en los aislados de K. pneumoniae la resistencia mostró tendencia a crecer en el tiempo para todos los antimicrobianos probados, excepto para amoxicilina/ácido clavulánico con tendencia a decrecer de -3,34. La diferencia porcentual de la resistencia del año 2021 con respecto al 2018 fue mayor para meropenem, cloranfenicol y amikacina (108,3 %, 70,2 % y 70,2 %, respectivamente). Aun así, los datos mostraron significación estadística para los antibióticos cefepima, aztreonam y meropenem (p &#8804; 0,05). En cuanto a los aislados de E. coli, la resistencia mostró tendencia a decrecer en ocho de los antimicrobianos investigados, pero el cloranfenicol y amikacina evidenciaron una tendencia al incremento de 3,65 y 4,83, respectivamente. La diferencia porcentual entre los años extremos del estudio en nueve antimicrobianos mostró valores inferiores al 50,0 %. Los datos evidenciaron significación estadística (p &#8804; 0,05) para cefotaxima y ampicilina/sulbactam.  Conclusiones: Hubo variación en la susceptibilidad a los antimicrobianos en los aislados de K. pneumoniae y E. coli durante los 4 años del estudio. Además, se observó una alta prevalencia de aislados multirresistentes.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  The presence of multidrug resistant enterobacteria in hospitals is increasingly frequent.  Objectives:  To describe the variation of the antimicrobial susceptibility pattern of Klebsiella pneumoniae and Escherichia coli isolates obtained from clinical samples of patients who were hospitalized and to identify the frequency of multidrug resistant isolates.  Methods:  A retrospective and descriptive study was performed between January 1, 2018 and December 31, 2021. The antimicrobial susceptibility was analyzed using the Bauer- Kirby disc diffusion method of 220 isolates (111 K. pneumoniae and 109 E. coli) obtained from clinical samples (blood, skin lesions, vascular catheters and tracheobronchial and surgical wound secretions) of patients hospitalized at the Hospital teaching surgical - clinic Aleida Fernández Chardiet, located in the province of Mayabeque, Cuba.  Results:  In the K. pneumoniae isolates during the four years of the study, resistance showed a tendency to increase over time, for all antibiotic tested, except for amoxicillin / ácid clavulánic, which showed a tendency to decrease from 3.34. The percentage difference of the resistance between the year 2021 in relation to 2018 were greater for meropenem, chloramphenicol and amikacin (108.3%, 70,2% y 70.2% respectively). Even so, the data provided evidence that showed statistical significance for the antibiotics cefepime, aztreonam y meropenem (p &#8804; 0,05). Regarding the E. coli isolates, resistance showed a tendency to decrease over the course of the four years of the study in eight of the investigated antibiotics. chloramphenicol and amikacin showed an increasing trend of 3.65 y 4.83 respectively. The percentage difference between the extreme years of the study in nine antimicrobials showed values lower than 50.0%. The data provide elements to suggest the presence of statistical significance (p &#8804; 0.05) for cefotaxim y ampicilin/sulbactam. Finally, 83.87% of K. pneumoniae isolates and 80.73% of E. coli isolates were multidrug resistant.  Conclusions:  There was variation in the susceptibility to antibiotic in the K. pneumoniae and E. coli isolates during the four years of the study. In addition, a high prevalence of multiresistant isolates was observed.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Klebsiella pneumoniae]]></kwd>
<kwd lng="es"><![CDATA[Escherichia coli]]></kwd>
<kwd lng="es"><![CDATA[Enterobacteriaceae]]></kwd>
<kwd lng="es"><![CDATA[farmacorresistencia bacteriana]]></kwd>
<kwd lng="es"><![CDATA[antibacterianos]]></kwd>
<kwd lng="en"><![CDATA[Klebsiella pneumoniae]]></kwd>
<kwd lng="en"><![CDATA[Escherichia coli]]></kwd>
<kwd lng="en"><![CDATA[Enterobacteriaceae]]></kwd>
<kwd lng="en"><![CDATA[multidrug resistant bacteria]]></kwd>
<kwd lng="en"><![CDATA[antibacterial (MeSH)]]></kwd>
</kwd-group>
</article-meta>
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