<?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>2448-8909</journal-id>
<journal-title><![CDATA[Medicina crítica (Colegio Mexicano de Medicina Crítica)]]></journal-title>
<abbrev-journal-title><![CDATA[Med. crít. (Col. Mex. Med. Crít.)]]></abbrev-journal-title>
<issn>2448-8909</issn>
<publisher>
<publisher-name><![CDATA[Colegio Mexicano de Medicina Crítica A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2448-89092017000300128</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Utilidad de los parámetros gasométricos como predictores de mortalidad en pacientes con choque séptico]]></article-title>
<article-title xml:lang="en"><![CDATA[Usefulness of gasometric parameters as predictors of mortality in septic shock patients]]></article-title>
<article-title xml:lang="pt"><![CDATA[Utilidade dos parâmetros gasométricos como preditores da mortalidade em pacientes com choque séptico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez Nava]]></surname>
<given-names><![CDATA[Víctor Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muñoz Ramírez]]></surname>
<given-names><![CDATA[María del Rosario]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chávez Pérez]]></surname>
<given-names><![CDATA[Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guerrero Izaguirre]]></surname>
<given-names><![CDATA[Israel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Tec. de Monterrey Hospital San José ]]></institution>
<addr-line><![CDATA[Monterrey Nuevo León]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<volume>31</volume>
<numero>3</numero>
<fpage>128</fpage>
<lpage>135</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2448-89092017000300128&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2448-89092017000300128&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2448-89092017000300128&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Objetivos:  Describir los parámetros gasométricos de la presión de dióxido de carbono, el déficit de base y saturación venosa central en los pacientes en choque séptico y observar si el cambio entre el valor inicial (T0) y a las 24 horas (T1) influye en su pronóstico.  Material y métodos:  Se realizó un estudio observacional y retrospectivo desde marzo de 2014 a julio de 2016 en pacientes mayores de 18 años con diagnóstico de choque séptico. Se midieron SOFA y APACHE II al ingreso, así como las variables derivadas de las gasometrías venosa central y arterial al diagnóstico del choque séptico (T0) y a las 24 horas del manejo inicial (T1).  Resultados:  Se incluyeron 39 pacientes: sobrevivientes (n = 25) y no sobrevivientes (n = 14). Al ingreso (T0), hubo diferencias entre ambos grupos en la &#916;PCO2 y &#916;PCO2/Ca-vO2 (7.2 ± 2.4 versus 8.7 ± 2.0 mmHg, p = 0.05) y (1.7 ± 0.5 versus 2.1 ± 0.9 mmHg/mL, p = 0.05), respectivamente. A las 24 horas (T1), el déficit de base (DB) y la presión arterial media (PAM) mostraron diferencia entre los grupos (-4.5 ± 5.0 versus -9.5 ± 7.7 mEq/L, p = 0.02) y (81 ± 10 versus 70 ± 9 mmHg, p = 0.03). El cambio del déficit de base (&#916;DB) entre los valores al ingreso (T0) y a las 24 horas (T1) fue significativo (-4.5 ± 4.1 versus 2.1 ± 6.3 mEq/L, p = 0.001); en la razón &#916;PCO2/Ca-vO2 (&#916;Ratio) no hubo diferencia (-0.02 ± 1.2 versus 0.72 ± 1.7 mmHg/mL, p = 0.13) entre los grupos.  Conclusión: Además de la &#916;PCO2 y la razón &#916;PCO2/Ca-vO2, en este estudio, el déficit de base puede ser una herramienta pronóstica en los pacientes con choque séptico.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Objectives:  To describe the carbon dioxide parameters, base deficit and central venous saturation in septic shock patients and observe if the change between the initial value (T0) and at 24 hours (T1) influences their prognosis.  Material and methods:  We performed a retrospective and observational study from March 2014 to July 2016. We included patients at least 18 years old with septic shock diagnosis. We assessed SOFA and APACHE II at admission and the derived gasometric parameters at diagnosis of septic shock and at 24 hours of treatment.  Results:  We included 39 patients. Survivors (n = 25) and non-survivors (n = 14). Upon admission (T0) there were differences between both groups in &#916;PCO2 and &#916;PCO2/Ca-vO2 (7.2 ± 2.4 versus 8.7 ± 2.0 mmHg, p = 0.05) and (1.7 ± 0.5 versus 2.1 ± 0.9 mmHg/mL, p = 0.05), respectively. At 24 hours (T1) base deficit (BD) and mean arterial pressure (MAP) showed significant differences (-4.5 ± 5.0 versus -9.5 ± 7.7 mEq/L, p = 0.02) and (81 ± 10 versus 70 ± 9 mmHg, p = 0.03). The change in BD (&#916;BD) between (T0) and (T1) was significant (-4.5 ± 4.1 versus 2.1 ± 6.3 mEq/L, p = 0.001) and &#916;PCO2/Ca-vO2 ratio (&#916;Ratio) showed no difference (-0.02 ± 1.2 versus 0.72 ± 1.7 mmHg/mL, p = 0.13) among the groups.  Conclusions:  Beside &#916;PCO2 and &#916;PCO2/Ca-vO2 ratio, base deficit can be a prognostic instrument in patients with septic shock.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo:  Objetivo:  Descrever os parâmetros gasométricos da pressão do dióxido de carbono, o deficit de base e a saturação venosa central em pacientes com choque séptico e observar se a variação entre o valor inicial (T0) e às 24 horas (T1) influencia o prognóstico dos pacientes.  Material e métodos:  Estudo retrospectivo e observacional desde março de 2014 a julho de 2016 em pacientes com idade superior a 18 anos com diagnóstico de choque séptico. Foram medidos SOFA escore e APACHE II na admissão, bem como as variáveis derivadas a partir da gasometria venosa central e arterial ao diagnóstico de choque séptico (T0) e às 24 horas do tratamento inicial (T1).  Resultados:  Foram incluídos 39 pacientes: sobreviventes (n = 25) e não sobreviventes (n = 14). Na admissão (T0), existem diferenças entre sobreviventes contra os não sobreviventes na &#916;PCO2 e &#916;PCO2/Ca-vO2 (7.2 ± 2.4 vs 8.7 ± 2.0 mmHg, p = 0.05) e (1.7 ± 0.5 vs 2.1 ± 0.9 mmHg/mL, p = 0.05), respectivamente. Após 24 horas (T1) o défice de base (DB) e a PAM mostraram diferenças entre os grupos (-4.5 ± 5.0 vs -9.5 ± 7.7 mEq / L, p = 0.02) e (81 ± 10 vs 70 ± 9 mmHg, p = 0.03). O delta DB entre os valores de admissão (T0) e às 24 horas (T1) foi significativa (-4.5 ± 4.1 vs 2.1 ± 6.3 mEq/L, p = 0.001) e na razão &#916;PCO2/Ca-vO2 (&#916;Ratio) não houve diferença entre os grupos (-0.02 ± 1.2 vs 0.72 ± 1.7 mmHg/mL, p = 0.13).  Conclusão:  Ademais da &#916;PCO2 e a razão &#916;PCO2/Ca-vO2, neste estudo, o deficit de base pode ser uma ferramenta prognóstica em pacientes com choque séptico.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Choque séptico]]></kwd>
<kwd lng="es"><![CDATA[&#916;PCO2]]></kwd>
<kwd lng="es"><![CDATA[&#916;PCO2/Ca-vO2]]></kwd>
<kwd lng="es"><![CDATA[déficit de base]]></kwd>
<kwd lng="en"><![CDATA[Septic shock]]></kwd>
<kwd lng="en"><![CDATA[&#916;PCO2]]></kwd>
<kwd lng="en"><![CDATA[&#916;PCO2/Ca-vO2]]></kwd>
<kwd lng="en"><![CDATA[base deficit]]></kwd>
<kwd lng="pt"><![CDATA[Choque séptico]]></kwd>
<kwd lng="pt"><![CDATA[&#916;PCO2]]></kwd>
<kwd lng="pt"><![CDATA[&#916;PCO2/Ca-vO2]]></kwd>
<kwd lng="pt"><![CDATA[deficit de base]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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