<?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>0465-546X</journal-id>
<journal-title><![CDATA[Medicina y Seguridad del Trabajo]]></journal-title>
<abbrev-journal-title><![CDATA[Med. segur. trab.]]></abbrev-journal-title>
<issn>0465-546X</issn>
<publisher>
<publisher-name><![CDATA[Escuela Nacional de Medicina del Trabajo. Instituto de Salud Carlos III]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0465-546X2020000100013</article-id>
<article-id pub-id-type="doi">10.4321/s0465-546x2020000100003</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Revisión sistemática sobre los riesgos del trabajo nocturno en embarazadas]]></article-title>
<article-title xml:lang="en"><![CDATA[Systematic review of night work in pregnant women]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Ruiz]]></surname>
<given-names><![CDATA[María del Carmen]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Rosario]]></surname>
<given-names><![CDATA[Evelin Noemy]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez Gamella]]></surname>
<given-names><![CDATA[Victoria]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mohamedi-Abdelkader]]></surname>
<given-names><![CDATA[Ikram Samira]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Graterol-Hernández]]></surname>
<given-names><![CDATA[Erika Betzabeth]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Polo de Santos]]></surname>
<given-names><![CDATA[María del Mar]]></given-names>
</name>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Universitario Puerta de Hierro UD ]]></institution>
<addr-line><![CDATA[Majadahonda ]]></addr-line>
<country>Spain</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Medicina de Trabajo de Navarra UD ]]></institution>
<addr-line><![CDATA[ Navarra]]></addr-line>
<country>España</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Medicina de Trabajo de Castilla-La Mancha UD ]]></institution>
<addr-line><![CDATA[ Castilla-La Mancha]]></addr-line>
<country>España</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Salud Laboral de Castilla y León UD Multiprofesional ]]></institution>
<addr-line><![CDATA[ Castilla y León]]></addr-line>
<country>España</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Salud Laboral de Canarias UD Multiprofesional ]]></institution>
<addr-line><![CDATA[ Canarias]]></addr-line>
<country>España</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2020</year>
</pub-date>
<volume>66</volume>
<numero>258</numero>
<fpage>13</fpage>
<lpage>25</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S0465-546X2020000100013&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S0465-546X2020000100013&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S0465-546X2020000100013&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción: el trabajo nocturno se ha asociado a determinados riesgos para la salud. Las mujeres embarazadas, además, podrían enfrentarse a riesgos específicos.  Objetivo: revisar la evidencia científica sobre los riesgos que el trabajo nocturno podría tener en las mujeres embarazadas. Identificar esos riesgos y valorar los efectos del trabajo nocturno en la salud de las embarazadas.  Material y método: revisión sistemática de la literatura publicada entre 2015-2019 en inglés y español. Se incluyeron todo tipo de estudios con información sobre la relación entre trabajo nocturno y determinados efectos en embarazadas como hipertensión, aborto, parto pretérmino o baja por enfermedad. Las bases de datos consultadas fueron: Medline (vía Pubmed), EMBASE, Scopus, WOS, Cochrane Library, IBECS y LILACS. Se evaluó la calidad de la evidencia.  Resultados: se incluyeron 4 estudios observacionales (calidad de la evidencia evaluada mediante declaración STROBE:77,3-81,9%) y 1 serie de casos (calidad evaluada mediante iniciativa MINCIR=68%). Se encontró asociación entre trabajo nocturno y mayor riesgo de aborto (HR ajustada=1,32; IC95%:1,07-1,62), baja por enfermedad (OR=1,55; IC95%:1,43-1,69) y descenso de niveles de melatonina. Se observó mayor riesgo de hipertensión tras realizar más de 4 turnos nocturnos consecutivos (OR=1,41; IC95%:1,01-1,98). No se encontró asociación entre trabajo nocturno y riesgo de parto pretérmino (OR=1,03; IC95%:0,88-1,21).  Conclusiones: parece existir asociación entre trabajo nocturno y determinados riesgos en embazadas. Sin embargo, no existe evidencia suficiente que lo apoye. Se considera necesario realizar estudios bien diseñados y de calidad en población más amplia, diversa y representativa.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: night work has been associated with certain health risks. Furthermore, pregnant women may face specific risks.  Objective: to review the scientific evidence of night work risks on pregnant women. Identify those risks and assess the effects of night work on the health of pregnant women.  Materials and methods: a systematic review of the published literature from 2015 to 2019 in English and Spanish was performed. All studies with information related to night work and possible effects in pregnant women like hypertension, miscarriage, preterm birth or sick leave were reviewed.  Results: 4 cohort studies (quality of the evidence assessed by STROBE statement: 77.3-81.9%) and 1 case series (quality assessed by MINCIR: 68%) were included. Association between night work and an increased risk of miscarriage (adjusted HR=1.32, CI95%:1.07-1.62), sick leave (OR=1.55, CI95%:1.43-1.69) and decreased melatonin levels was found. An increased risk of hypertension after more than 4 consecutive night shifts (OR=1.41, CI95%:1.01-1.98) was found. No association between night work and risk of preterm birth was found (OR=1.03, CI95%:0.88-1.21).  Conclusion: association between night work and certain risks on pregnant women seems to exist. However, there is no enough evidence to support it. It is considered necessary to carry out well-designed and quality studies in a wider, more diverse and representative population.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Embarazada]]></kwd>
<kwd lng="es"><![CDATA[riesgos]]></kwd>
<kwd lng="es"><![CDATA[trabajadora]]></kwd>
<kwd lng="es"><![CDATA[trabajo nocturno]]></kwd>
<kwd lng="es"><![CDATA[turno nocturno]]></kwd>
<kwd lng="en"><![CDATA[Pregnant woman]]></kwd>
<kwd lng="en"><![CDATA[risks]]></kwd>
<kwd lng="en"><![CDATA[worker woman]]></kwd>
<kwd lng="en"><![CDATA[night work]]></kwd>
<kwd lng="en"><![CDATA[night shift]]></kwd>
</kwd-group>
</article-meta>
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