<?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>2500-5006</journal-id>
<journal-title><![CDATA[Revista Colombiana de Nefrología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. colom. nefrol.]]></abbrev-journal-title>
<issn>2500-5006</issn>
<publisher>
<publisher-name><![CDATA[Asociación Colombiana de Nefrología e Hipertensión Arterial]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2500-50062022000100206</article-id>
<article-id pub-id-type="doi">10.22265/acnef.9.1.556</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Estimación de la tasa de filtración glomerular: concordancia de la ecuación del European Kidney Function Consortium de 2020 con CKD-EPI y FAS en adultos jóvenes]]></article-title>
<article-title xml:lang="en"><![CDATA[Glomerular filtration rate estimation: concordance of the 2020 European Kidney Function Consortium equation with CKD-EPI and FAS in Young adults]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Brissón]]></surname>
<given-names><![CDATA[Cecilia María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cuestas]]></surname>
<given-names><![CDATA[Verónica Inés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Denner]]></surname>
<given-names><![CDATA[Susana Graciela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fernández]]></surname>
<given-names><![CDATA[Verónica Guillermina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Prono Minella]]></surname>
<given-names><![CDATA[Priscila del Carmen]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Belzarena]]></surname>
<given-names><![CDATA[Rosina Bonifacino]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Colussi]]></surname>
<given-names><![CDATA[Vanesa Griselda]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Brissón]]></surname>
<given-names><![CDATA[María Eugenia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Marsili]]></surname>
<given-names><![CDATA[Silvia Ester]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rosso]]></surname>
<given-names><![CDATA[Facundo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional del Litoral Facultad de Bioquímica y Ciencias Biológicas ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Argentina</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional de Lanús  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Argentina</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional del Litoral Facultad de Ciencias Médicas ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Argentina</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>9</volume>
<numero>1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S2500-50062022000100206&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S2500-50062022000100206&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S2500-50062022000100206&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Contexto:  la TFG es un indicador de la función renal y se estima por ecuaciones TFGe, la mayoría son aplicables en un rango etario, aunque se producen discrepancias en los valores al cambiar de fórmula por cruzar un límite de edad. Así, la ecuación CKD-EPI sobreestima la TFG en adultos jóvenes, mientras que la ecuación FAS la sobreestima para creatininemias bajas. Para minimizar sus limitaciones, el European Kidney Function Consortium propuso la ecuación EKFC combinando características de diseño de FAS y CKD-EPI.  Objetivo:  evaluar el comportamiento de las ecuaciones EKFC vs. CKD-EPI y FAS en jóvenes, las diferencias en TFGe y la concordancia en asignación a categorías de TFG.  Metodología:  estudio analítico aprobado por el Comité Asesor de Ética y Seguridad de la Investigación de la Facultad de Bioquímica y Ciencias Biológicas de la UNL, con una muestra de 157 estudiantes voluntarios, de entre 18 y 37 años. Para la medición de la creatininemia se utilizó el método Jaffé cinético trazable a Isotopic Dilution Mass Spectroscopy, con el programa estadístico MedCalc.  Resultados:  EKFC: TFGe menores que CKD-EPI y FAS, total y por sexo. Media de las diferencias (mL/min/1,73 m2): (CKD-EPI - EKFC) totales = 10,42; 18-20 años = 11,91; 21-30 años = 11,10; 31-37 años = 8,96 / (FAS-EKFC) totales = 2,79; FAS &#8804; 110 mL/min/1,73 m2 y mayor: 1,1 y 9,0 respectivamente. Asignación a categorías G: kappa menores EKFC vs. CKD-EPI que vs. FAS. Recategorización: 13,4 % en G1 por CKD-EPI categorizados G2 por EKFC; 0,6 % respecto a FAS en igual sentido. Asignación a categorías &#8805; 75mL/min/1,73 m2 o menor: buena concordancia.  Conclusiones:  en la muestra, EKFC cumple los objetivos de su diseño. La sobreestimación de TFGe por CKD-EPI en adultos jóvenes disminuyó, más fuertemente hacia los 18 años, y corrigió la de FAS para creatininemias bajas. Es importante desarrollar estimadores de TFG basados en creatininemia que cubran todo el rango de edades y estados de función renal.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction:  GFR is a kidney function indicator. The estimation of the GFR (eGFR) is carried out by equations. Most of them are applicable with in an age range. Discrepancies between the values are found when crossing a limit of age. CKD-EPI overestimates GFR in young adults; FAS overestimates it for low creatininemias. To minimize these limitations, the European Kidney Function Consortium proposed the EKFC equation that combines design features of FAS and CKD-EPI.  Objective:  The performance of EKFC vs. CKD-EPI and FAS in young people was evaluated: differences in eGFR and agreement in the allocation to GFR categories were found.  Methods:  Analytical study approved by the Ethics Committee. Sample: 157 volunteer students, 18-37 years old. Creatininemia: kinetic Jaffé method traceable to Isotopic Dilution Mass Spectroscopy. Program: MedCalc.  Results:  EKFC: eGFR lower than CKD-EPI and FAS, total and by sex. Means of the differences (mL/min/1.73m2): total (CKD-EPI - EKFC) = 10.42; 18-20 years = 11.91; 21-30 years = 11.10; 31-37 years = 8.96 // (FAS-EKFC) total = 2.79; FAS&#8804; 110 mL/min/1.73m2 and higher: 1.1 and 9.0 respectively. Allocation to G categories: lower kappa EKFC vs. CKD-EPI than vs. FAS. Recategorization: 13.4% in G1 by CKD-EPI categorized G2 by EKFC; 0.6% compared to FAS, in the same sense. Allocation to categories &#8805;75mL/min/1.73 m2 or less: good agreement.  Conclusions: In the sample, EKFC meets the objectives of its design. The overestimation of eGFR by CKD-EPI in young adults decreased, even more around 18 years of age, and corrected that of FAS for low creatininemias. It is important to develop GFR estimators based on creatininemia that cover the entire range of ages and renal function status.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[tasa de filtración glomerular]]></kwd>
<kwd lng="es"><![CDATA[pruebas de función renal/tendencias]]></kwd>
<kwd lng="es"><![CDATA[técnicas y procedimientos diagnósticos]]></kwd>
<kwd lng="es"><![CDATA[adulto joven]]></kwd>
<kwd lng="es"><![CDATA[creatinina]]></kwd>
<kwd lng="es"><![CDATA[CKD-EPI]]></kwd>
<kwd lng="es"><![CDATA[FAS]]></kwd>
<kwd lng="es"><![CDATA[European Kidney Function Consortium.]]></kwd>
<kwd lng="en"><![CDATA[glomerular filtration rate]]></kwd>
<kwd lng="en"><![CDATA[kidney function tests/trends]]></kwd>
<kwd lng="en"><![CDATA[diagnostic techniques and procedures]]></kwd>
<kwd lng="en"><![CDATA[young adult]]></kwd>
<kwd lng="en"><![CDATA[creatinine]]></kwd>
<kwd lng="en"><![CDATA[CKD-EPI]]></kwd>
<kwd lng="en"><![CDATA[FAS]]></kwd>
<kwd lng="en"><![CDATA[European Kidney Function Consortium.]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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