<?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>1665-1146</journal-id>
<journal-title><![CDATA[Boletín médico del Hospital Infantil de México]]></journal-title>
<abbrev-journal-title><![CDATA[Bol. Med. Hosp. Infant. Mex.]]></abbrev-journal-title>
<issn>1665-1146</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Salud, Hospital Infantil de México Federico Gómez]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1665-11462023000600345</article-id>
<article-id pub-id-type="doi">10.24875/bmhim.23000059</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Prevalence of alcohol, tobacco, and illicit drugs consumption during teenage pregnancy: an observational, prospective, and cross-sectional study]]></article-title>
<article-title xml:lang="es"><![CDATA[Prevalencia del consumo de alcohol, tabaco y drogas ilícitas durante el embarazo en adolescentes: un estudio observacional, prospectivo y transversal]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ruiz-Barreto]]></surname>
<given-names><![CDATA[Angela L.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A3"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alanís-Rodríguez]]></surname>
<given-names><![CDATA[Melissa T.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Terrones-Martínez]]></surname>
<given-names><![CDATA[Dante I.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Padrón-Martínez]]></surname>
<given-names><![CDATA[Ana C.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arízaga-Ballesteros]]></surname>
<given-names><![CDATA[Víctor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alcorta-García]]></surname>
<given-names><![CDATA[Mario R.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Góngora-Cortés]]></surname>
<given-names><![CDATA[José J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rojas-Martínez]]></surname>
<given-names><![CDATA[Augusto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Campo-Casanelles]]></surname>
<given-names><![CDATA[Miguel Del]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lara-Díaz]]></surname>
<given-names><![CDATA[Víctor J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Tecnológico de Monterrey Escuela de Medicina y Ciencias de la Salud ]]></institution>
<addr-line><![CDATA[Monterrey Nuevo León]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Clínica Universidad de la Sabana  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Clínica Juan N. Corpas  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Servicios de Salud de Nuevo León Hospital Regional Materno Infantil ]]></institution>
<addr-line><![CDATA[Monterrey Nuevo León]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Tecnológico de Monterrey The Institute for Obesity Research ]]></institution>
<addr-line><![CDATA[Monterrey Nuevo León]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,University of California Department of Pediatrics School of Medicine]]></institution>
<addr-line><![CDATA[San Diego California]]></addr-line>
<country>USA</country>
</aff>
<aff id="Af7">
<institution><![CDATA[,University of New South Wales Discipline of Paediatrics and Child Health Faculty of Medicine]]></institution>
<addr-line><![CDATA[Sydney ]]></addr-line>
<country>Australia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<volume>80</volume>
<numero>6</numero>
<fpage>345</fpage>
<lpage>354</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-11462023000600345&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-11462023000600345&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-11462023000600345&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: Teenage pregnancy is a significant public health issue in Mexico; its prevalence oscillates around 20% of all pregnancies. Concurrently, alcohol, tobacco, and illicit drug use have become more common in this age group.  Methods: To estimate the prevalence of substance exposure in a population of pregnant teenagers, we conducted a prospective, observational, and cross-sectional study. The protocol was approved by the institutional review board. On informed consent, we asked 420 consecutive pregnant youngsters cared for at the outpatient obstetric service of a tertiary public regional women´s and children´s hospital in Nuevo León, in northeast Mexico, to answer a previously validated questionnaire to estimate the prevalence of alcohol, tobacco, or illicit drugs use during pregnancy.  Results: Of the 420 participants, 317 (75.5%) consumed at least one substance during pregnancy. Alcohol, either alone or in combination, was consumed by 300 (71.7%) participants. Tobacco was used by 117 (27.8%) participants, almost always in combination with other substances, while marijuana and other illicit drugs were consumed by 92 (21.9%) participants. Approximately one-fourth of the participants, 102 (24.1%) reported no substance use during pregnancy.  Conclusions: In this series, the reported prevalence of alcohol, tobacco, and illicit drugs consumption during pregnancy, explored with a validated instrument, is higher than that previously reported in our country. This fact offers a worrying picture of another set of factors adding to the burden of teenage pregnancy.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción: El embarazo en la adolescencia ha adquirido gran importancia en la salud pública en México; su prevalencia oscila alrededor del 20% de los embarazos. Paralelamente, el consumo de alcohol, tabaco y drogas ilícitas en este periodo es cada vez más común en estas jóvenes.  Métodos: Para estimar la prevalencia de exposición a estas substancias en adolescentes embarazadas, se llevó a cabo un estudio prospectivo, observacional y transversal. El protocolo fue aprobado por los Comités de Ética e Investigación. Previo consentimiento informado, se solicito a 420 jóvenes embarazadas atendidas en la clínica prenatal del hospital materno-infantil más grande en Nuevo León, que respondieran un cuestionario previamente validado para estimar la prevalencia del consumo de substancias.  Resultados: De 420 participantes, 317 (75.5%) consumieron al menos una de estas sustancias durante el embarazo. El alcohol, solo o en combinación, fue consumido por 300 (71.5%). El tabaco fue usado por 117 (27.8%), casi siempre en combinación con otras sustancias, mientras que la mariguana y otras drogas ilícitas fueron consumidas por 92 (21.9%) participantes. Alrededor de una cuarta parte del grupo estudiado (24.1%) reportó no haber consumido ninguna de estas substancias en su embarazo.  Conclusiones: En nuestra serie, la prevalencia de consumo de alcohol, tabaco y drogas ilícitas durante el embarazo, explorada con un instrumento validado, es mayor de la reportada en estimaciones previas en nuestro país. Estos datos ofrecen un panorama preocupante de una serie de factores que se agregan a la carga del embarazo en la adolescencia.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Pregnancy in adolescence]]></kwd>
<kwd lng="en"><![CDATA[Alcohol drinking]]></kwd>
<kwd lng="en"><![CDATA[Tobacco]]></kwd>
<kwd lng="en"><![CDATA[Illicit drugs]]></kwd>
<kwd lng="es"><![CDATA[Embarazo en la adolescencia]]></kwd>
<kwd lng="es"><![CDATA[Consumo de alcohol]]></kwd>
<kwd lng="es"><![CDATA[Tabaco]]></kwd>
<kwd lng="es"><![CDATA[Drogas Ilícitas]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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