<?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>2072-8174</journal-id>
<journal-title><![CDATA[Revista del Nacional (Itauguá)]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Nac. (Itauguá)]]></abbrev-journal-title>
<issn>2072-8174</issn>
<publisher>
<publisher-name><![CDATA[Hospital Nacional (Itauguá)]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2072-81742021000100041</article-id>
<article-id pub-id-type="doi">10.18004/rdn2021.jun.01.041.063</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Factores de riesgo de baja masa ósea en mujeres premenopáusicas con lupus eritematoso sistémico]]></article-title>
<article-title xml:lang="en"><![CDATA[Risk factors for low bone mass in premenopausal women with systemic lupus erythematosus]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Montiel de Jarolin]]></surname>
<given-names><![CDATA[Dora Elizabeth]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Núñez Ramírez]]></surname>
<given-names><![CDATA[Pedro Gustavo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Ministerio de Salud Pública y Bienestar Social Centro Médico Nacional, Hospital Nacional Departamento de Medicina Interna, Servicio de Clínica Médica]]></institution>
<addr-line><![CDATA[Itauguá ]]></addr-line>
<country>Paraguay</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional de Itapúa Facultad de Ciencias Médicas Posgrado de Medicina Interna]]></institution>
<addr-line><![CDATA[Encarnación ]]></addr-line>
<country>Paraguay</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<volume>13</volume>
<numero>1</numero>
<fpage>41</fpage>
<lpage>63</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_arttext&amp;pid=S2072-81742021000100041&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_abstract&amp;pid=S2072-81742021000100041&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_pdf&amp;pid=S2072-81742021000100041&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  los pacientes con lupus eritematoso sistémico tienen un riesgo elevado de presentar baja masa ósea. La etiología es multifactorial (factores de riesgo tradicionales, propios de la enfermedad, laboratoriales, serológicos, metabólicos y los relacionados al tratamiento).  Objetivo:  determinar los factores de riesgo de baja masa ósea tradicionales (sedentarismo, tabaquismo, alcohol, baja ingesta láctea, bajo índice de masa corporal), los relacionados con la enfermedad (presentación clínica, laboratoriales), metabólicos y el tratamiento, con la disminución de la densidad mineral ósea en mujeres premenopáusicas con lupus eritematoso sistémico  Metodología:  estudio observacional de corte transverso prospectivo analítico de mujeres premenopáusicas con lupus eritematoso sistémico, que acudieron al Hospital Nacional en el periodo octubre 2017 - octubre 2019. La densidad mineral ósea se evaluó por densitometría DEXA, y se utilizó el Z score, valores iguales o inferiores a -2,0 DS se consideró como baja masa ósea. Las variables analizadas fueron: factores de riesgo de baja masa ósea tradicionales, relacionados con el lupus, laboratoriales, serológicos, metabólicos y el tratamiento. Análisis estadístico: para la descripción de las variables se utilizaron media y desviación estándar para las variables continuas; y proporciones para las cualitativas. Se establecieron los factores de riesgo para baja masa ósea por la prueba de Chi cuadrado considerándose significativa un valor p &#706;0,05, para la comparación de medias se utilizó la prueba t de Student.  Resultado: fueron estudiadas 61 mujeres premenopáusicas, con una edad media 25,6 ± 7 años, siendo del interior de país 50,8 % y Central 49,18 %. Tenían estudios secundarios 54,10 %, terciarios 34,43 %, primarios 11,48 %. Eran sedentarias 40,98 %. Presentaron una baja ingesta láctea el 21,31 % y una era fumadora activa 1,64 %. Tenían peso normal 66,2 %, sobrepeso 15,25 %, obesidad 18,33 %, bajo peso 1,64 %. El tiempo de enfermedad, la media fue 50,5 ± 56,4 meses. El índice de actividad de la enfermedad (SLEDAI) fue 6,5 ± 6,5. Presentaron una duración de la enfermedad mayor de 5 años el 31,5 %. Tenían nefritis lúpica 52,54 %, actividad severa 24,5 %, hipocomplementemia 45 %. ANA media 995,5 ± 1164, anti DNA media 274,2 ± 830,8, anti Ro positivo 54,7 %, anti Sm positivo 24,5 %. Vitamina D valor normal 18,5 %, insuficiente 50,9 %, deficiente 32,6 %. Presentaron baja masa ósea 7 pacientes 11,4 %. No se encontró una asociación entre los factores de riesgo tradicionales, los relacionados con la enfermedad (inflamación sistémica, laboratoriales), metabólicos y el tratamiento con una baja masa ósea, (p &#8805; 0,05).  Conclusión: presentaron una baja masa ósea 11,4 %. Los factores de riesgo tradicionales, los relacionados con la enfermedad, laboratoriales, metabólicos y el tratamiento no presentaron una asociación estadísticamente significativa con la baja masa ósea.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction: patients with systemic lupus erythematosus have a high risk of presenting low bone mass. The etiology is multifactorial (traditional risk factors, characteristic of the disease, laboratory, serological, metabolic and those related to treatment).  Objective: to determine the traditional risk factors for low bone mass (sedentary lifestyle, smoking, alcohol, low milk intake, low body mass index), those related to the disease (clinical presentation, laboratory), metabolic and treatment, with the decrease of bone mineral density in premenopausal women with systemic lupus erythematosus.  Methodology: prospective analytical cross-sectional observational study of premenopausal women with systemic lupus erythematosus, who attended the Hospital Nacional in the period October 2017 - October 2019. Bone mineral density was evaluated by DEXA densitometry, and the Z score was used, equal values or lower than -2,0 SD was considered low bone mass. The variables analyzed were: traditional risk factors for low bone mass, related to lupus, laboratory, serological, metabolic and treatment. Statistical analysis: mean and standard deviation for continuous variables were used to describe the variables; and proportions for qualitative ones. The risk factors for low bone mass were established by the Chi square test, considering a p value of &#706;0,05 as significant; the Student's t test was used to compare means.  Result: 61 premenopausal women were studied, with a mean age 25,6 ± 7 years, being from the interior of the country 50,8 % and Central 49,18 %. They had secondary studies 54,10 %, tertiary 34,43 %, primary 11,48 %. 40,98 % were sedentary. 21,31 % had a low milk intake and 1,64 % was an active smoker. They were 66,2 % normal weight, 15,25 % overweight, 18,33 % obese, 1,64 % underweight. The mean time of illness was 50,5 ± 56,4 months. The disease activity index (SLEDAI) was 6,5 ± 6,5. 31,5 % had a duration of the disease greater than 5 years. They had lupus nephritis 52,54 %, severe activity 24,5 %, hypocomplementemia 45 %. Mean ANA 995,5 ± 1164, mean anti DNA 274,2 ± 830,8, anti Ro positive 54,7 %, anti Sm positive 24,5 %. Vitamin D normal value 18,5 %, insufficient 50,9 %, deficient 32,6 %. 7 patients had low bone mass, 11,4 %. No association was found between traditional risk factors, those related to the disease (systemic inflammation, laboratory), metabolic and treatment with low bone mass, (p &#8805; 0,05).  Conclusion: they had a low bone mass 11,4 %. The traditional risk factors, those related to the disease, laboratory, metabolic and treatment did not present a statistically significant association with low bone mass.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[baja masa ósea]]></kwd>
<kwd lng="es"><![CDATA[mujeres premenopáusicas]]></kwd>
<kwd lng="es"><![CDATA[lupus eritematoso sistémico]]></kwd>
<kwd lng="en"><![CDATA[low bone mass]]></kwd>
<kwd lng="en"><![CDATA[premenopausal women]]></kwd>
<kwd lng="en"><![CDATA[systemic lupus erythematosus.]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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