<?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>1130-5274</journal-id>
<journal-title><![CDATA[Clínica y Salud]]></journal-title>
<abbrev-journal-title><![CDATA[Clínica y Salud]]></abbrev-journal-title>
<issn>1130-5274</issn>
<publisher>
<publisher-name><![CDATA[Colegio Oficial de la Psicología de Madrid]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1130-52742006000100005</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Recientes resultados en el tratamiento del tabaquismo femenino]]></article-title>
<article-title xml:lang="en"><![CDATA[Recent results in women smoking treatment]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muñoz]]></surname>
<given-names><![CDATA[Miguel A.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Baena]]></surname>
<given-names><![CDATA[Antoni G.]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cepeda-Benito]]></surname>
<given-names><![CDATA[Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="A03"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad de Granada Departamento de Psicología ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>España</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Universidad Ramón Llull Grupo de Estudio de Adicciones ]]></institution>
<addr-line><![CDATA[Barcelona ]]></addr-line>
<country>España</country>
</aff>
<aff id="A03">
<institution><![CDATA[,Texas. A & M. University-College Station Departament of Psychology ]]></institution>
<addr-line><![CDATA[ TX]]></addr-line>
<country>EE.UU</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>05</month>
<year>2006</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>05</month>
<year>2006</year>
</pub-date>
<volume>17</volume>
<numero>1</numero>
<fpage>91</fpage>
<lpage>117</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S1130-52742006000100005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S1130-52742006000100005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S1130-52742006000100005&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[El informe del Surgeon General en 2001, mostró claramente que el tabaquismo es un problema que cada año atañe a más mujeres. En general, los estudios arrojan resultados contradictorios, no obstante, algunos autores insisten en que las mujeres presentan más dificultades y de diferente tipo que los hombres cuando deciden abandonar el tabaco. En este artículo se revisan diferentes factores (terapia sustitutiva, estados afectivos, preocupación por el peso, malestar producido por el ciclo menstrual y apoyo social), que influyen en la cesación tabáquica en mujeres, con el objetivo de señalar las acciones terapéuticas más adecuadas para el tratamiento del tabaquismo femenino. Se revisa también la literatura existente en el cese tabáquico durante el periodo de gestación, por ser una fase dónde aspectos motivacionales, sociales, médicos y culturales pueden facilitar la decisión de dejar de fumar.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Surgeon General 2001 memorandum showed clearly that smoking is an ever increasing problem in females. Although evidence is contradictory, some authors claim that women have more difficulties and of different type than men when they decide to give up smoking. This paper reviews a number of factors (e.g., surrogate therapy, affective states, concern about weight, menstrual cycle related distress and social support) that affect women smoking cessation so as to guide the most appropriate therapeutic strategies. A review of literature about smoking cessation during pregnancy is also made -during this period a number of motivational, social, medical and cultural factors can make the smoking cessation easier.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Tabaquismo]]></kwd>
<kwd lng="es"><![CDATA[Tratamiento]]></kwd>
<kwd lng="es"><![CDATA[Mujeres]]></kwd>
<kwd lng="es"><![CDATA[Embarazo]]></kwd>
<kwd lng="en"><![CDATA[Women Smoking]]></kwd>
<kwd lng="en"><![CDATA[Smoking cessation]]></kwd>
<kwd lng="en"><![CDATA[Therapeutic strategies]]></kwd>
<kwd lng="en"><![CDATA[Pregnancy]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="right"><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>ARTÍCULOS</b></FONT></p>     <p>&nbsp;</p>     <p><font face="Verdana, Arial, Helvetica-Normal, sans-serif" size="4"><b><a name="top"></a>Recientes resultados en el tratamiento del tabaquismo femenino</b></font></p>     <p><font face="Verdana, Arial, Helvetica-Normal, sans-serif" size="4"><b>Recent results in women smoking treatment</b></font></p>     <p>&nbsp;</p>     <p>&nbsp;</p>     <p>&nbsp;</p>     <p><font face="Verdana" size="2"><b>Miguel A. Muñoz</b><sup>1</sup></font></p>      <p><font face="Verdana" size="2"><b>Antoni G. Baena</b><sup>2</sup></font></p>     <p><font face="Verdana" size="2"><b>Antonio Cepeda-Benito</b><sup>3</sup></font></p>      ]]></body>
<body><![CDATA[<p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><sup>1</sup>Departamento de Psicología. Universidad de Granada. España</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><sup>2</sup>Grupo de Estudio de Adicciones. Universidad Ramón Llull. Barcelona. España</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><sup>3</sup>Departament of Psychology Texas. A &amp; M. University-College Station, TX-EE.UU. </font></p>     <p>&nbsp;</p>     <p>&nbsp;</p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>RESUMEN</b></font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">El informe del Surgeon General en 2001, mostró claramente que el tabaquismo es un problema que cada año atañe a más mujeres. En general, los estudios arrojan resultados contradictorios, no obstante, algunos autores insisten en que las mujeres presentan más dificultades y de diferente tipo que los hombres cuando deciden abandonar el tabaco.    <br> En este art&iacute;culo se revisan diferentes factores (terapia sustitutiva, estados afectivos, preocupaci&oacute;n por el peso, malestar producido por el ciclo menstrual y apoyo social), que influyen en la cesaci&oacute;n tab&aacute;quica en mujeres, con el objetivo de se&ntilde;alar las acciones terap&eacute;uticas m&aacute;s adecuadas para el tratamiento del tabaquismo femenino. Se revisa tambi&eacute;n la literatura existente en el cese tab&aacute;quico durante el periodo de gestaci&oacute;n, por ser una fase d&oacute;nde aspectos motivacionales, sociales, m&eacute;dicos y culturales pueden facilitar la decisi&oacute;n de dejar de fumar.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>ABSTRACT</b></font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Surgeon General 2001 memorandum showed clearly that smoking is an ever increasing problem in females. Although evidence is contradictory, some authors claim that women have more difficulties and of different type than men when they decide to give up smoking.    ]]></body>
<body><![CDATA[<br> This paper reviews a number of factors (e.g., surrogate therapy, affective states, concern about weight, menstrual cycle related distress and social support) that affect women smoking cessation so as to guide the most appropriate therapeutic strategies. A review of literature about smoking cessation during pregnancy is also made –during this period a number of motivational, social, medical and cultural factors can make the smoking cessation easier.</font></p>      <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>Palabras clave</b></font>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Tabaquismo, Tratamiento, Mujeres, Embarazo.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><b>Key words</b></font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Women Smoking, Smoking cessation, Therapeutic strategies, Pregnancy.</font></p>     <p>&nbsp;</p>     <p>&nbsp;</p>     <p><font face="Verdana, Arial, Helvetica-Normal, sans-serif" size="3"><b>Introducción</b></font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">El primer informe del Surgeon General de EEUU dedicado a la mujer y al tabaco (U.S. Department of Health and Human Services &#91;USDHHS&#93; 1980) fue publicado 16 años después del conocido informe de “Tabaco y Salud” del Comité Consultivo del Surgeon General (U.S. Department of Health, Education, and Welfare &#91;USDHEW&#93; 1964).</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">El informe de 1980 demostró claramente que las mujeres también eran presa del hábito de fumar y de sus perjudiciales consecuencias. Desde ese momento, cientos de estudios han incrementado sustancialmente el conocimiento sobre el consumo de tabaco en la mujer. Este nuevo conocimiento fue recopilado en un informe del Surgeon General en 2001 (USDHHS, 2001). Quizás la forma más sucinta de resumir las consecuencias de fumar en la salud de las mujeres sea citar al propio Cirujano General, Dr. Davir Satcher: “...no hay mejores palabras que describir el 600 por cien de incremento en el porcentaje de las muertes de mujeres debidas al cáncer de pulmón desde 1950, una enfermedad ante todo causada por el consumo de tabaco. Claramente, las enfermedades relacionadas con el tabaco en las mujeres son una epidemia hecha y derecha (p.1; USDHHS, 2001).</font></p>      ]]></body>
<body><![CDATA[<p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">La literatura recogida en ese informe indicaba que en algunos estudios clínicos con mujeres, éstas tenían más dificultades para dejar de fumar que los hombres, aunque el informe remarcaba que no había suficientes datos para alcanzar una conclusión definitiva (USDHHS, 2001). En general, los estudios individuales arrojan resultados contradictorios (ver Gritz, Nielsen, y Brooks, 1996; Freund, D’Agostino, Belanger, Kannel, y Stokes, 1992). No obstante, algunos autores insisten en que las mujeres presentan más dificultades que los hombres en el abandono del tabaco (Cepeda-Benito, Reynoso, y Erath, 2004; Hatsukami, Skoog, Allen, y Bliss, 1995; Perkins, 1996; 2001; Pennebaker y Roberts, 1992).</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">En este artículo se realiza una intensa revisión de diferentes estudios, señalando aquellos factores a tener en cuenta en el tratamiento del tabaquismo en mujeres. Las bases de datos empleadas para la búsqueda fueron PsycInfo, Proquest Psychology Journals y Medline, entre los años 1985 hasta 2004.</font></p>     <p>&nbsp;</p>     <p><font face="Verdana, Arial, Helvetica-Normal, sans-serif" size="3"><b>Barreras para las Mujeres en la  Cesaci&oacute;n Tab&aacute;tica</b></font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">En los últimos años algunos investigadores han prestado una estrecha atención a cinco factores que podrían representar un mayor obstáculo en el tratamiento del tabaquismo en mujeres. Las hipótesis de trabajo son que 1) las mujeres responden más pobremente a la Terapia Sustitutiva de Nicotina (TSN), 2) las mujeres son más vulnerables a la sintomatología depresiva y ansiosa tras abandonar el tabaco, 3) la preocupación por el peso ganado y por la figura tras la deshabituación, 4) los efectos del ciclo menstrual aumentan los síntomas del Síndrome de Abstinencia Tabáquica (SAT) tras la cesación y 5) las mujeres, o no reciben o no responden a los efectos beneficiosos del refuerzo social durante la cesación. A continuación repasaremos los estudios científicos con el fin de arrojar luz, si es que es posible, sobre cada una de estas hipótesis.</font></p>     <P><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2><b>1. Diferente eficacia de la TSN en hombres y mujeres</b></font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">La terapia sustitutiva de nicotina fue introducida hace dos d&eacute;cadas y es la farmacoterapia m&aacute;s com&uacute;nmente usada para la cesaci&oacute;n tab&aacute;quica (Burton, Gitchell y Shiffman, 2000). Se cree que la TSN ayuda a los fumadores a dejar el tabaco porque principalmente reduce las ganas de fumar y el SAT, reemplazando parcialmente los efectos psicoactivos positivos asociados con fumar cigarrillos (p.ej. mejorando el humor y la atenci&oacute;n), a la vez que disocia la conducta de fumar con los efectos de la nicotina (Henningfield, 1995). </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">En todas sus presentaciones: chicle, parche, inhalador, pulverizador nasal, pastilla sublingual y comprimidos para chupar, la TSN mejora sustancialmente la probabilidad de dejar de fumar en comparaci&oacute;n con el placebo, particularmente cuando se combina con consejo profesional (Cepeda-Benito, 1993; Fiore, Smith, Jorenby, y Baker, 1994; Fiore et al., 2000). Algunas investigaciones en las que se hab&iacute;a comparado la eficacia de los diferentes sustitutos de nicotina encontramos que no hay diferencias significativas a largo plazo (Hajek et al., 1999). Por lo tanto, teniendo en cuenta que la TSN no contiene los elementos cancer&iacute;genos ni t&oacute;xicos que se encuentran en el humo del cigarrillo, y que el riesgo de adicci&oacute;n y retirada de la TSN es m&iacute;nima (Benowitz, 1998; West, et al., 2000), la TSN es altamente recomendable como m&eacute;todo para dejar de fumar (Fiori et al., 2000). </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Por otra parte, Perkins (Perkins, 1996; 2001; Perkins, Donny, y Caggiula, 1999) han planteado que las mujeres podrían beneficiarse menos que los hombres de la TSN. Basándose en una revisión de 14 estudios que realizaron comparaciones de género en al efectividad de la TSN, estos autores concluyeron que la TSN es menos relevante para las mujeres en la cesación tabáquica, entre otros motivos porque los efectos reforzantes a nivel físico de la nicotina, son menos relevantes en mujeres fumadoras. Factores tales como la socialización, aspectos sensoriales o por el placer de tener un cigarrillo entre las manos, son estímulos condicionados que tendrían un mayor peso en el reforzamiento de la conducta de consumo de tabaco.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Más recientemente, Cepeda-Benito et al., (2004) sometieron a un análisis riguroso la revisión de la eficacia de la TSN en comparación con el placebo entre hombres y mujeres. En un metaanálisis, examinaron el tamaño de 90 efectos estadísticos adquiridos en una muestra de 21 estudios de la efectividad de la TNS frente a un tratamiento placebo. El tamaño de cada efecto se estimó como una proporción de probabilidades, con la probabilidad de alcanzar la abstinencia en el grupo TSN en el nominador y la probabilidad de alcanzar la abstinencia en el grupo placebo como denominador. Estos autores reportaron que, en los hombres, la TNS era más efectiva que el placebo en seguimientos de 3, 6, y 12 meses. Aunque en las mujeres los beneficios de la TNS eran claros a los 3 y 6 meses del tratamiento, la ventaja de la TNS sobre el placebo desparecía a los 12 meses. Interesantemente, las mujeres parecían beneficiarse más del tratamiento TNS cuando éstese daba junto a un tratamiento relativamente intensivo y menos cuando se daba junto a un tratamiento breve. Dentro de un contexto de tratamiento breve (ej. simplemente aconsejar dejar de fumar y dar instrucciones acerca de cómo utilizar el método TNS), la TNS ayudaba a las mujeres a corto plazo solamente. En los hombres, la TNS era eficaz sin tener en cuenta la intensidad del tratamiento adjunto. Los resultados indicaban que la TNS parece ser un método eficaz para ayudar a dejar de fumar tanto en hombres como en mujeres. Sin embargo, para que las mujeres se beneficien de los beneficios de la TNS, sería recomendable que se recetara en combinación con técnicas psicológicas.</font>     ]]></body>
<body><![CDATA[<P><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2><b>2. Regulación de los estados afectivos negativos: Depresión y Ansiedad</b></font></p>      <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Los estados afectivos negativos son un término general que engloba emociones de elevada activación o estrés como la ansiedad, la rabia o el miedo, y de baja activación como el sentimiento de tristeza, la soledad o la depresión (Gritz, Neilsen, y Brooks, 1996; Solomon y Flynn, 1993).</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Como tal, los des&oacute;rdenes afectivos como la Depresi&oacute;n Mayor (DM) y la ansiedad, presentan desaf&iacute;os especiales en las mujeres fumadoras por diferentes razones. La primera es que los fumadores en comparaci&oacute;n con los no fumadores experimentan m&aacute;s elevadas proporciones de des&oacute;rdenes afectivos, particularmente DM y ansiedad. Esta relaci&oacute;n parece ser dosis dependiente: cuanto mayor es el consumo de cigarrillos mayor proporci&oacute;n y severidad de la DM y de los des&oacute;rdenes de ansiedad (Breslau, Kilbey, y Andreski, 1992; Kendler et al., 1993). La segunda raz&oacute;n es que las mujeres tienen el doble de probabilidad de experimentar des&oacute;rdenes afectivos que los hombres (APA, 1994; Blazer, Kessler, McGonagle, y Swartz, 1994). Finalmente, los estados afectivos negativos, se encuentran asociados con el fracaso en la deshabituaci&oacute;n tab&aacute;quica. Siendo esta asociaci&oacute;n m&aacute;s pronunciada en las mujeres (e.j., Borrelli, Bock, King, Pinto, y Marcus, 1996). </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Tambi&eacute;n se ha visto que las personas fuman para regular su estado de &aacute;nimo negativo; lo que significa mejorar su humor y hacer frente al estr&eacute;s, aburrimiento y/o rabia (Cepeda-Benito y Reig-Ferrer, 2000). De echo, fumar un solo cigarrillo puede provocar la elevaci&oacute;n del humor y unos efectos placenteros a corto plazo (Henningfield, London y Jaffe, 1987). Adem&aacute;s, fumar puede ser visto como una estrategia pasiva de afrontamiento (coping) (p.ej. estrategias que cambian el nivel de activaci&oacute;n pero dejan la situaci&oacute;n estresante sin cambio) y, por otra parte, puede servir como un poderoso reforzador para moderar experiencias aversivas. Siendo las mujeres las que utilizan m&aacute;s el tabaco para reducir los estados de &aacute;nimo negativos y el estr&eacute;s (Cepeda-Benito y Reig-Ferrer, 2000). </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Un estado de &aacute;nimo negativo representa un factor de riesgo para la reca&iacute;da del tabaco, quiz&aacute;s mayor para las mujeres que para los hombres. Por ejemplo, Borland (1990) encontr&oacute; que un humor negativo provocaba m&aacute;s f&aacute;cilmente la reca&iacute;da en las mujeres que en los hombres, mientras que un humor positivo lo hac&iacute;a m&aacute;s f&aacute;cilmente entre los hombres. Adem&aacute;s, aunque aparentemente no tiene lugar entre los hombres, las mujeres con episodios cr&oacute;nicos o recurrentes de DM presentan proporciones de &eacute;xito menores que las mujeres con episodios simples o sin historia de DM (Covey, Glassman, Stetner, y Becker, 1993). Igualmente, una historia de DM predice el fracaso en el tratamiento, tanto a corto como a largo plazo, siendo este efecto m&aacute;s pronunciado entre las mujeres ( Glassman et al., 1993). </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Tambi&eacute;n se han observado diferencias de g&eacute;nero cuando hablamos de la relaci&oacute;n entre la dependencia a la nicotina y la depresi&oacute;n, de forma que la dependencia a la nicotina es un factor de riesgo significativo para el inicio del primer episodio de DM (Breslau, Kilbey y Andreski, 1993). Por su parte, el SAT aumenta el riesgo de nuevos episodios de depresi&oacute;n entre los fumadores con antecedentes de depresi&oacute;n. </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">No obstante, aunque es generalmente aceptado que los episodios de depresi&oacute;n anteriores reducen la posibilidad de &eacute;xito, tambi&eacute;n existen evidencias contradictorias (Killen et al., 2000; Niaura et al, 1999). As&iacute;, Hitsman, Borrelli, McChargue y Spring (2003) dirigieron un meta-an&aacute;lisis de 15 estudios con la finalidad de examinar si los antecedentes de DM se encontraban asociados con el fracaso al dejar de fumar. Estos autores tambi&eacute;n estudiaron si la depresi&oacute;n representaba una mayor barrera para dejar el tabaco en las mujeres que en los hombres. Sorprendentemente los hallazgos que encontraron fueron que los episodios anteriores de DM no incrementaban el riesgo de reca&iacute;da, ni a corto ni a largo plazo, y que la influencia de estos episodios en la cesaci&oacute;n al tabaco no era diferente entre los hombres y las mujeres. Por lo tanto, estos autores concluyeron que los fumadores con historia de depresi&oacute;n deber&iacute;an ser animados a dejar de fumar y que, contrariamente a la pr&aacute;ctica actual, a los fumadores con un episodio de DM no se les deber&iacute;a aconsejar seguir tratamientos intensivos innecesarios. No obstante, el meta-an&aacute;lisis no examin&oacute;, y por eso no pudo contradecir, los hallazgos que afirmaban que dejar de fumar incrementaba el riesgo de un nuevo episodio de DM. </font></p>     <P><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2><b>3. Preocupación por el peso </b></font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Las mujeres suelen doblar las afirmaciones de preocupación por el peso y el miedo de que al dejar de fumar se gane un peso no deseado, en comparación con los hombres (ej., Froom, Relamed y Benbassat, 1998), por lo que la preocupación por el peso puede ser una barrera para la cesación tabáquica. Esto se debe a que esperan que el tabaco les ayudará a controlar su apetito y con él, su peso corporal (Cepeda-Benito y Reig-Ferrer, 2000; Wetter et al., 1994). Aunque algunos estudios sugieren que la preocupación por el peso puede no estar asociada con pobres resultados en la deshabituación al tabaco (Glasgow et al., 1999), otros afirman que la terapia centrada en la reducción de la preocupación por el peso, incrementa el éxito del tratamiento (Perkins, 2001). Parece ser que los resultados contradictorios podrían ser debidos a las diferentes metodologías utilizadas por los investigadores en el análisis de sus datos (Jeffery, Hennrikus, Lando y Murray, 2000), es decir, los investigadores que examinaron las relaciones entre dos variables, la preocupación por la ganancia de peso y el éxito en la cesación al tabaco, tenían más probabilidad de encontrar asociaciones significativas entre esas variables que los investigadores que tuvieron en cuenta otros factores como el nivel de dependencia a la nicotina.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Por otra parte, se sabe que muchos fumadores que dejan de fumar ganan peso y que las mujeres tienen tendencia a ganar m&aacute;s peso que los hombres (Hill, Roe, Taren, Muramoto, Leischow, 2000), aunque la ganancia de peso var&iacute;a. Muchos fumadores pueden aumentar su peso en unos 4,5 kg. al dejar de fumar, pero aproximadamente el 10&#37; ganar&aacute; unos 13 kg (Froom, Melamed, y Benbassat, 1998; Klesges et al., 1997; Williamson et al., 1991). Algunos estudios sugieren que los programas intensivos de control de peso (por ej. dieta estricta) abruman al individuo durante los intentos de deshabituaci&oacute;n y puede tener un impacto negativo en la cesaci&oacute;n del tabaco (Hall, Tunstall, Vila, y Duffy, 1992; Perkins, 1994; Pirie, McBride, Hellerstedt, y Jeffrey, 1992). En cualquier caso, deber&iacute;a tenerse en cuenta que aunque fumar permite a los fumadores mantener o perder peso, el peso ganado durante la cesaci&oacute;n es un problema de salud insignificante comparado con los riesgos asociados con fumar (Williamson et al., 1991; Burnette, Meilahn, Wing, y Kuller, 1998). </font></p>     ]]></body>
<body><![CDATA[<p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Debemos transmitir al paciente que el peso ganado tras la cesaci&oacute;n es evitable y que la actividad f&iacute;sica moderada puede tener efectos positivos durante la cesaci&oacute;n tab&aacute;quica (Kawachi, Troisi, Rotnizky, y Coakley, 1996). Por ejemplo, en un estudio reciente se encontr&oacute; que un ligero o moderado ejercicio (45 minutos, 3 veces por semana) combinado con un programa de cesaci&oacute;n cognitivo-conductual, incrementaban la cesaci&oacute;n a largo plazo y retrasaba la ganancia de peso en las mujeres (Marcus et al., 1999). </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">En cuanto a la farmacoterapia para dejar de fumar (p. ej. chicle de nicotina y bupropion de liberaci&oacute;n prolongada &#91;SR&#93;) tiende a atenuar la ganancia de peso durante el tratamiento. Desafortunadamente cuando el tratamiento cesa, los fumadores tienden a ganar peso hasta alcanzar el mismo nivel que los fumadores que han dejado de fumar sin farmacoterapia (Emont, y Cummings, 1987; Gross, Stitzer, y Maldonado, 1989; Jorenby, 1998). Sin embargo, un estudio reciente encontr&oacute; que a largo plazo, un a&ntilde;o, la utilizaci&oacute;n de bupropi&oacute;n SR en comparaci&oacute;n con el placebo, atenuaba la ganancia de peso m&aacute;s entre las mujeres que entre los hombres y no s&oacute;lo al final del tratamiento sino tambi&eacute;n a los 6 meses de seguimiento (Rigotti, Thorndike, y Duncan, 2000).</font></p>      <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Más información sobre este tema nos la aportaron dos estudios que demostraron que la preocupación por el peso al dejar de fumar podría ser más relevante en las mujeres con preocupación crónica sobre su dieta y la ganancia de peso, que en aquellas mujeres poco preocupadas por ello (Ogden, y Fox, 1994; French, Perry, Leon, y Fulkerson, 1994). Esto sugiere que las mujeres poco preocupadas por el peso deberían estar más dispuestas a aceptar alguna ganancia de peso durante los intentos de cesación, es decir, los terapeutas deberían reconocer que no todas las mujeres utilizan el cigarrillo como una herramienta de control de peso.</font></p>      <P><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2><b>4. Efectos del Ciclo Menstrual</b></font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">En conjunto, la conducta de fumar no varía significativamente durante las fases del ciclo menstrual (Perkins et al., 1999), si tenemos en cuenta las conclusiones de diferentes revisiones que encontraron que si se producían, estos cambios eran mínimos o no significativos (Perkins et al., 1999; Pomerleau, Tate, Lumley, y Pomerleau, 1994). </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Sin embargo, la información recogida en auto-informes demuestran que si se deja de fumar durante la menstruación y la fase lútea se da un aumento de la sintomatología del SAT (Craig, Parott, y Coomer, 1992; O’Hara, Portser, y Anderson, 1989; Perkins et al., 2000; Pomerleau, Garcia, Pomerleau, y Cameron, 1992). Estos hallazgos fueron confirmados en otro estudio con pacientes externos a los que se les aplicaron métodos más rigurosos para verificar la fase menstrual, como por ejemplo autoinformes, niveles hormonales y ultrasonidos transvaginales (Allen, Hatsukami, Christianson, y Brown, 2000). Estos investigadores también encontraron que la sintomatología del SAT era más severa durante la fase premenstrual y la fase lútea avanzada. </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Teniendo en cuenta que el SAT y el dolor premenstrual presentan síntomas comunes (p..ej. depresión, irritabilidad y somnolencia), es razonable esperar efectos adicionados en la cesación y en la recaída. Algunas evidencias sugieren que esas diferencias en el SAT durante las fases menstruales se traducen en un menor éxito en la deshabituación. Por ejemplo, un estudio encontró que las mujeres fumadoras en fase premenstrual fueron menos capaces de mantener la abstinencia durante dos días consecutivos con las mujeres que se encontraban en medio del ciclo, p. ej. fase folicular (Craig, Parrott, y Coomber, 1992). </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Otros autores, Gritz, Nielsen y Brooks (1996), afirman en un documento no publicado que las mujeres que fueron asignadas al azar a programas de deshabituación durante la fase folicular de su ciclo menstrual, tenían niveles de éxito más elevados (70&#37;) que aquellas mujeres que fueron aleatoriamente asignadas durante la fase lútea. </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Por otra parte, los niveles basales de dolor premenstrual en mujeres asignadas a programas de deshabituación durante la fase lútea y que tuvieron éxito, eran menores que en las mujeres que no consiguieron dejar de fumar. Sin embargo, otro estudio encontró que las mujeres eran más propensas a la recaída durante la menstruación, sin tener en cuenta la fase del ciclo en la que se encontraban al iniciar el tratamiento (Frye, Ward, Bliss, y Garvey, 1992). </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Considerando la evidencia de la influencia del ciclo menstrual en la cesación tabáquica, hipotéticamente las mujeres deberían incrementar sus posibilidades de éxito planificando su intento de cesación al inicio del ciclo menstrual. Para aquellas mujeres que no pueden planificar su intento de cesación de acuerdo a su fase menstrual, se ha demostrado que el chicle de nicotina de altas dosis (4 mgrs) en comparación con el de dosis bajas (2mgrs) es más eficaz en la reducción del SAT, particularmente durante la fase lútea propiamente dicha (Hatsukami et al.,1995). En cuanto a los Parches de Nicotina Transdérmicos (PNT), también se han mostrado eficaces durante la fase lútea al reducir significativamente los síntomas del SAT y las ganas de fumar (Allen et al., 2000).</font></p>      ]]></body>
<body><![CDATA[<P><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2><b>5. Síndrome de Abstinencia al Tabaco (SAT)</b></font></p>      <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Muchos fumadores experimentan claramente SAT, incluso a las 6 horas después del último cigarrillo (Hughes, Gust, Skoog, Keenan y Fenwick, 1991; Hughes y Hatsukami, 1986;). El SAT alcanza su pico máximo durante la primera y la tercera semana y está compuesto por ocho síntomas, tanto físicos como psicológicos. Sin embargo, el número, la intensidad y la duración de estos síntomas pueden variar entre los fumadores (APA &#91;DSM-IV&#93;, 1994; Pomerleau, Marks, y Pomerleau, 2000).</font></p>      <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Las diferencias de género en el SAT han sido ampliamente estudiadas. Hughes, Higgins y Hatsukami (1990) concluyen que estudios retrospectivos sugieren que las mujeres experimentan una sintomatología más severa del SAT que los hombres. Pomerleau y cols. (1994) dirigieron la cuestión al estudio de la predisposición al recuerdo. Encontraron que las mujeres y los hombres no diferían al informar sobre la sintomatología del SAT prospectivamente, aunque sí existían diferencias cuando lo hacían retrospectivamente. Los hombres infravaloraban o recordaban más deficientemente la sintomatología del SAT, mientras que la valoración retrospectiva y prospectiva en las mujeres eran concordantes. Así, estudios controlados retrospectivos (Breslau, Kilbey, y Andreski, 1992; Pirie, Murray y Luepker, 1991) y prospectivos (Tate, Pomerleau, y Pomerleau, 1993; Gunn, 1986) no han encontrado diferencia significativa alguna entre hombres y mujeres, tanto en el número como en la severidad de los síntomas del SAT.</font></p>      <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">El SAT, particularmente aquellos síntomas afectivos como la depresión y la ansiedad, se ha demostrado como un buen predictor de la recaída del tabaco (Piasecki et al., 2000; Wetter et al., 2000). Las mujeres que presentan desórdenes afectivos tienen mayor probabilidad de experimentar una sintomatología del SAT más prolongada y severa, así mismo, existe la evidencia que las mujeres experimentan mayor alivio del SAT (p..ej. refuerzo negativo) fumando cigarrillos que los hombres, lo cual puede aumentar la vulnerabilidad a la recaída (Wetter et al., 1994).</font></p>      <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">En relación a esto, Gunn (1986) vio que las alteraciones que provoca el SAT se asociaban negativa¬mente con el éxito en el tratamiento del tabaco en mujeres pero no en hombres. Este autor especula que las mujeres son más sensibles al malestar asociado con el SAT y a la recaída para aliviarlo (Gunn, 1986). Pomerleau (1996) también encontró que las mujeres que experimentaron más severamente el SAT eran más propensas a la recaída que aquellas mujeres que informaron sufrir una menor sintomatología. Este patrón no era evidente para los hombres.</font></p>      <P><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2><b>6. Apoyo Social</b></font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">En términos generales, el apoyo social puede ser definido como aquellas conductas o actos de otros que proporcionan refuerzo emocional, sostén y aprecio (Glanz, Lewis, y Rimer, 1990). El apoyo social es importante para la salud mental y el afrontamiento de la vida diaria porque ayuda a las personas a adaptarse y a enfrentarse con los elementos estresantes; iniciar y mantener los cambios de conducta y a reducir los riesgos de salud (Cohen y Syme, 1985).</font></p>      <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Existe la idea generalizada de que las mujeres son las proveedoras del apoyo social, lo que sugiere que la dimensión social podría ser de particular importancia para las mujeres cuando realizan cambios conductuales o se enfrentan con el estrés. </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Congruentemente con esta idea, los resultados de un meta-análisis de 55 estudios sobre el efecto del apoyo social en la salud, concluyeron que el apoyo social estaba más directamente relacionado con la salud en las mujeres que en los hombres (Schwartz, y Leppin, 1989). Este estudio también indicaba que las mujeres tienden a recibir y a usar más apoyo social que los hombre para enfrentarse con el estrés y a los cambios en su estilo de vida, incluyendo por supuesto dejar de fumar (Solomon y Flynn, 1993; Stockton, McMahon, Jason, 2000). </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">En el contexto de la cesación tabáquica, la proporción de éxito aumenta tanto con el apoyo social en el propio tratamiento como en el apoyo externo derivado de los cónyuges, miembros de la familia y amigos (Fiore et al., 2000). Por lo que se ha identificado el apoyo social como un factor clave en la predicción del éxito a largo plazo en comparación con la recaída (Hanson, Isacsson, Janzon, y Lindell, 1990). Otro estudio ha demostrado que, aunque el apoyo social no estaba directamente relacionado con la cesación, sí predice el mantenimiento de la abstinencia a los 6 y a los 12 meses tanto en hombres como en mujeres (Curry, Thompson, Sexton, y Omenn, 1989). Otro hallazgo interesante es el que hace referencia al estatus de fumador de los individuos que proporcionan ayuda. Se ha demostrado que la ayuda ofrecida por no-fumadores o ex fumadores se encuentra positivamente relacionada con proporciones más elevadas de cesación que la ofrecida por fumadores (Bjornson et al., 1995; Murray et al., 1995).</font></p>      ]]></body>
<body><![CDATA[<p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Por lo tanto, podemos decir que no está totalmente claro que el apoyo social juegue un papel diferente para las mujeres y para los hombres en la cesación tabáquica. Por ejemplo, algunos estudios de deshabituación tabáquica encontraron un mayor efecto del apoyo social entre las mujeres (Fisher, Lichtenstein, Haire-Joshu, y Morgan, 1993), mientras que otros autores encontraron lo contrario (Murray et al., 1995). En el “Estudio sobre la Salud del Pulmón” (Lung Health Study-LHS), un amplio programa multicéntrico de cesación, el apoyo social parecía jugar un importante papel. Aunque las mujeres tenían menor proporción de cesación que los hombres a los 12 meses (25&#37; versus 29&#37;) y a los 36 meses (19&#37; versus 22&#37;), no se encontraron diferencias entre los participantes que vivían con no fumadores. En cambio, para los participantes que vivían con mujeres fumadoras estaban menos predispuestas a dejar de fumar y más a recaer a los 24 meses (Bjornson et al., 1995). Las mujeres que conformaron esta muestran presentaban una mayor probabilidad de vivir con fumadores que con no fumadores. Dada la relación entre el estatus de fumador de las personas que proporcionan apoyo y de las personas con las que se convive, estos hallazgos sugieren que el apoyo social podría ser más importante para la mujeres. Aunque, considerando que las mujeres de esta muestra solían vivir más con fumadores que con no fumadores, los resultados también sugieren que las mujeres podrían haber proporcionado más apoyo social efectivo a sus parejas masculinas. </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Más soporte para la hipótesis que afirma que las mujeres se benefician más que los hombres del apoyo social durante la cesación tabáquica, procede de un estudio que indica que éstas valoran más la importancia del apoyo social durante la deshabituación que los hombres, y sólo entre las mujeres, las que tuvieron éxito al dejar de fumar solían informar más sobre el hecho de haber recibido apoyo social que aquellas que recayeron (Solomon y Flynn, 1993). Por otra parte, parece que el tipo de apoyo social encontrado útil difiere entre las mujeres y los hombres. Por ejemplo, las mujeres valoran el apoyo emocional (p.ej. la empatía y el estímulo) como más útil que el apoyo instrumental (p.ej. sugerencia de alternativas a fumar) durante los intentos de cesación (Fisher et al., 1993). </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">En cuanto al estatus marital, parece constituir una forma de apoyo social significativa, tanto para hombres como para mujeres. Tener un cónyuge fumador podría ir en detrimento de la cesación tabáquica (McBride, Pirie, y Curry, 1992). Por ejemplo, en sus análisis de los datos de la LHS, Murray et al. (1995) encontraron que los participantes casados tenían niveles de deshabituación más elevados entre los 4 y los 12 meses que los participantes no casados. Por su parte, para las mujeres casadas la presencia de fumadores en su casa provocaba proporciones significativamente menores de cesación que entre las mujeres que compartían su casa con no fumadores o ex fumadores (Murray et al., 1995). De nuevo, las mujeres en este estudio presentaban una mayor probabilidad de vivir con fumadores que con no fumadores, y de estar solteras. Por lo que podemos decir que el apoyo social constituye un importante componente en la cesación tabáquica por lo que debe serincluido como un componente integral del tratamiento del tabaquismo.</font></p>      <P><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2><b>Embarazo y Tabaco</b></font></p>      <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">En los últimos años la prevalencia de mujeres fumadoras en edad fértil ha disminuido. Esta disminución se debe, en parte, a que muchas mujeres dejan de fumar cuando deciden quedarse embarazadas. En Estados Unidos en 1989, el 20&#37; de las mujeres en periodo de gestación fumaba, pasando al 12&#37; en el año 2000 (USDHHS, 2001). Lo mismo se observa en países europeos como Suecia, dónde alrededor del 40&#37; de las mujeres entre 16 y 24 años fumaban en 1980, reduciéndose al 21&#37; en el año 2000 (Swedish Survey of Living Conditions, Statics, 2002) o Dinamarca, donde fumaban el 50&#37; de las mujeres con edades comprendidas entre 20 y 29 años en 1980, pasando a ser el 28&#37; en el 2000 (National Board of Healt Denmark 2002). Se cree que esto es debido a tres causas: a la disminución en la prevalencia en las fumadoras en general, al mayor nivel educativo de las futuras madres (Martin, Hamilton, Ventura, Menacker, y Park, 2002; Bearer, Emerson, O&#180;Riordan, Roitman, y Shackleton, 1997) y al abandono del hábito de fumar en el momento de quedarse embarazadas. Otros estudios señalan que estos datos pueden no reflejar claramente la realidad, ya que en los autoinformes que realizan las mujeres embarazas podrían ocultar su hábito. En un meta-análisis llevado a cabo por Russell, Crawford y Woodby (2004) donde analizaban un total de 25 estudios con estas características, el 36&#37; de los mismos sólo se basaban en autoinformes, los restantes además también empleaban algún tipo de medida bioquímica. Cuando se comparaban los autoinformes con los análisis clínicos, se observaba que un alto número de mujeres embarazadas ocultaban su consumo de tabaco. En un estudio realizado por Boyd, Windsor, Perkins, y Lowe (1998), se encontró una tasa de incongruencia del 26&#37; entre los autoinformes de las mujeres que decían haber dejado de fumar al quedarse embarazadas y la información de las pruebas clínicas. Probablemente la presión social, sentimientos de culpabilidad y el temor a ser estigmatizadas sean las causas de esta conducta.</font></p>      <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Bien conocidos son los daños que el tabaco puede ocasionar no sólo a la madre, si no también al feto y los riesgos que pueden surgir en el parto. La literatura señala problemas en el crecimiento y peso del feto (Kramer, 1987; Nordstr&ouml;m y Cnattingius, 1994; Rasmussen y Adams, 1997) riesgo de malformaciones (Wyszynsky, Duffy, y Beaty, 1997; Shiono, Klebanoff, y Berendes, 1986), mayor probabilidades de muerte s&uacute;bita (Dybing y Sanner, 1999), muerte prematura del feto (Meyer y Tonascia, 1997), nacimientos prematuros (Copper, Goldenberg, DuBard, y Davis, 1994; Kramer, 1987) y problemas en el embarazo relacionados con la placenta (Rasmussen y Adams, 1997; Rasmussen, Irgens, y Dalaker, 1994). Entre el 20&#37; y el 40 &#37; de las fumadoras que dejan de fumar lo hacen por alguno de estos motivos (Cnattingius, Lindmark, y Meirik, 1992; Wisborg, Henriksen, Hedegaard, y Secher, 1996). Sin embargo, a pesar de estar concienciadas de estos riesgos, no todas las mujeres embarazadas consiguen dejar de fumar.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Diferentes estudios comparan las caracter&iacute;sticas de las mujeres que dejan de fumar en su periodo de embarazado con aquellas que no lo consiguen. Las que abandonan el tabaco de manera espont&aacute;nea tienen un nivel educativo y econ&oacute;mico mayor (Ockene et al., 2002; Curry, McBride, Grothaus, Lando, y Pirie, 2001; Hajek et al., 2001), suelen tener parejas que les apoyan en su decisi&oacute;n de abandonar el tabaco (McBride et al., 1998; Pollak et al., 2001; Hajek et al., 2001) y acuden a cuidados prenatales antes que aquellas que contin&uacute;an fumando (Panjari et al., 1997; Velasquez et al., 2000). Otros factores que incrementan la probabilidad de dejar de fumar incluyen el experimentar malestar en los primeros meses del embarazo (Curry et al., 2001), el haber tenido un aborto previo (Quinn, Mullen y Ershoff, 1991), querer dar el pecho al ni&ntilde;o (&#180;Campo, Faden, Brown, y Gielen, 1992) y haber planificadola concepci&oacute;n del futuro hijo (Dejin-Karlsson et al., 1996). Todos estos datos indican que las mujeres que toman conciencia de su situaci&oacute;n de embarazadas pronto o que est&aacute;n deseosas de concebir est&aacute;n altamente motivadas y dispuestas a renunciar al tabaco (Fisher et al., 1993; Scheibmeir, 2000). </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">En general, la literatura sugiere que las actitudes y las creencias de los da&ntilde;os que puede ocasionar al feto el h&aacute;bito de fumar, es una variable relevante en el cese de la conducta en fumadoras (Ockene et al., 2002; Quinn et al., 1991). Sin embargo, el da&ntilde;o que la madre se ocasiona a s&iacute; misma no parece ser una variable influyente. Algunos estudios se&ntilde;alan que tanto las mujeres que contin&uacute;an fumando como las que lo abandonan se preocupan por los efectos que el fumar pueda tener en la salud del feto. Sin embargo, las mujeres que dejan de fumar informan estar menos motivadas por la presi&oacute;n social y por lo concerniente a su salud personal (Curry et al., 2001). Las mujeres embarazadas que no logran abandonar el consumo no son menos conscientes de los riesgos, sino que perciben los riesgos como menores (Ockene et al., 2002; Weinstein, 1998). En estos casos, el uso de marcadores biol&oacute;gicos de da&ntilde;o podr&iacute;an ser una herramienta &uacute;til para motivar el abandono del tabaco, ya que proporcionan una evidencia directa y personal del impacto del tabaco. Datos de impacto personal son m&aacute;s efectivos que datos epidemiol&oacute;gicos por que los anteriores son mejor recordados, m&aacute;s tenidos en cuenta y percibidos como m&aacute;s cre&iacute;bles (Kreuter, Strecher, y Glassman, 1999). </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Las actitudes ante el embarazo y el deseo por un feliz parto, hace del periodo prenatal una fase, en la vida de la mujer fumadora, especialmente sensible al asesoramiento y al consejo m&eacute;dico, que puede favorecer la decisi&oacute;n de abandonar el consumo de tabaco. Por otro lado, la necesidad de seguimiento m&eacute;dico para los cuidados prenatales, favorece el contacto medico-paciente, lo cual beneficia intervenci&oacute;n en la adicci&oacute;n t&aacute;baquica. Melvin et al. (2000), encontraron que intervenciones breves de entre 5 y 15 minutos con materiales espec&iacute;ficos y materiales de autoayuda, pod&iacute;an favorecer la decisi&oacute;n de abandonar el consumo de tabaco entre mujeres embarazadas en un 30 y un 70&#37;, comparado con aquellas que s&oacute;lo recib&iacute;an una advertencia de los riesgos de continuar fumando. Adem&aacute;s, estas intervenciones breves se pod&iacute;an incluir en las revisiones m&eacute;dicas que frecuentemente se realizan durante el embarazo. Los materiales empleados son una adaptaci&oacute;n del programa ";Las 5 As"; desarrollado inicialmente para la poblaci&oacute;n de fumadores en general (Fiore et al. 2000). Este programa se&ntilde;ala 5 pasos a cubrir: <i>Ask</i>, preguntar al paciente sobre su situaci&oacute;n como fumador empleando cuestionarios de elección multiple; Advise, asesorar de manera personal, clara y directa de los beneficios de dejar el tabaco; Assess, evaluar el intentar quitarse de fumar en los próximos 30 días; Assist, asistencia a los que intentan dejar de fumar mediante técnicas de resolución de problemas, habilidades de afrontamiento; Arrange, organizar sesiones de seguimiento, para evaluar el proceso de abandono y si es necesario asesorar en la búsqueda de más ayuda profesional. </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Los estudios clínicos, con mujeres embarazadas, que se han llevado a cabo con terapias farmacológicas han empleado el Bupropión y sustitutos de nicotina como sustancias preferentes. El Bupropion, cuyo mecanismo de acción todavía no es bien conocido, es clasificado por la Food and Drug Administration (FDA) como una sustancia de tipo B, esto es, no existe evidencia de riesgo en humanos y el riesgo durante el embarazo es remoto pero posible (Benowitz et al., 2000). Los estudios realizados en humanos no arrojan datos concluyentes sobre la seguridad de este fármaco. Aunque son bien conocidos lo posibles efectos adversos que puede tener para el paciente que lo consume (Boshier, Wilton, y Shakir, 2003) y por ende, para la mujer embarazada, los efectos directos sobre el embrión. Algunos datos parecen indicar que el empleo de esta sustancia durante los primeros tres meses de embarazo conlleva algunos riesgos para el embrión. Así en una muestra de 266 mujeres embarazadas, se describieron 31 abortos espontáneos, 7 complicaciones durante el parto y 7 nacimientos con algún tipo de defecto congénito. Aunque los resultados no superan estadísticamente a los problemas asociados al embarazo en población general, los expertos recomiendan emplear terapias psicológicas y que la decisión de emplear este fármaco sea del paciente asesorado por su médico (Benowitz y Dempsey 2004).</font></p>     ]]></body>
<body><![CDATA[<p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Los expertos no coinciden en estimar el nivel de riesgo asociado con el empleo de las terapias sustitutivas de nicotina durante el embarazo (Benowitz et al., 2000; Oncken y Kranzler, 2003), si est&aacute;n de acuerdo en reconocer que el fumar conlleva un riesgo mayor. El tabaco posee cientos de sustancias qu&iacute;micas nocivas, que van desde el mon&oacute;xido de carbono hasta radicales libres y sustancias oxidantes que afectan tanto a la madre como al feto (Dempsey y Benowitz, 2001; Kiechl-Kohlendorfer et al., 2001). Por otro lado, variables como la forma de administraci&oacute;n de la nicotina o la dosis, afecta a los efectos adversos de la misma. As&iacute;, una dosis en un periodo corto de tiempo, provoca altas concentraciones en el torrente sangu&iacute;neo que se aglutinar&aacute;n en los tejidos de la madre y del feto (Benowitz et al., 2000, Benowitz y Dempsey 2004). Del mismo modo, la nicotina fumada se distribuye m&aacute;s r&aacute;pidamente que cuando su consumo es inhalado o a trav&eacute;s de la piel. Estudios cl&iacute;nicos realizados con mujeres embarazadas, no arrojan datos concluyentes con respecto a la eficacia de estos tratamientos. Windsor y cols. (2000) no encontraron diferencias significativas en los niveles de cotinina entre mujeres embarazadas que empleaban parches de nicotina y mujeres embarazas que recib&iacute;an placebo. Sin embargo, el n&uacute;mero de cigarrillos fumados disminuy&oacute;, adem&aacute;s los ni&ntilde;os cuyas madres utilizaron parches ten&iacute;an mayor peso que aquellos cuyas madres tomaron placebo. As&iacute;, estas terapias durante el embarazo, suponen una forma de administraci&oacute;n de nicotina menos nociva, que est&aacute; libre de otras sustancias perjudiciales que se producen en el consumo fumado. Adem&aacute;s, si se practica con dosis menores de lo habitual se puede lograr resultados positivos y un menor numero de cigarros fumados (Benowitz y Dempsey, 2004; Windsor et al., 2000). </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"> Estos datos plantean la necesidad de elaborar nuevas estrategias terap&eacute;uticas para motivar y propiciar el abandono del tabaco en mujeres embarazadas. Teniendo en cuenta que un alto porcentaje de mujeres embarazadas tiene ingresos menores, incentivos econ&oacute;micos podr&iacute;an ser motivadores externos que propiciasen quitarse de fumar. En un estudio realizado por Donatelle et al. (2000) ofrecieron apoyo econ&oacute;mico y apoyo social durante 8 meses a 112 mujeres embarazadas. Comprobaron la abstinencia mediante an&aacute;lisis farmacol&oacute;gicos y tanto este grupo como el grupo control recibieron al principio del estudio una sesi&oacute;n sobre los beneficios de abandonar el consumo de tabaco. Los resultados indicaron que el 32&#37; de mujeres que participaron en el estudio mantuvieron la abstinencia durante 8 meses, frente al 9&#37; del grupo control que s&oacute;lo recib&iacute;a la charla, aunque estos resultados se redujeron a los 2 meses despu&eacute;s de acabar el tratamiento. El empleo de incentivos pueden ser una buena estrategia para motivar la participaci&oacute;n en programas de deshabituaci&oacute;n e incrementar la abstinencia y prevenir las reca&iacute;das a corto plazo (Donatelle et al., 2004). Sin embargo, el desarrollo de motivadores intr&iacute;nsecos resulta imprescindible para mantener la abstinencia a largo plazo (Curry et al., 2001). </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Aunque las tasas de abandono de mujeres embarazadas es mayor que en mujeres no embarazadas, el 80&#37; de las mujeres que dejan de fumar durante su periodo de embarazo han reanudado su h&aacute;bito durante el primer a&ntilde;o que sigue al parto. De estas, el 45&#37; volvieron a fumar entre los 2 y 3 meses despu&eacute;s del parto y entre el 60 y 70&#37; a los 6 meses (Kahn, Zuckerman, Bauchner, Homer, y Wise, 2002; Mullen, Richardson, Quinn, y Ershoff, 1997; Mullen 2004). Este alto porcentaje de reca&iacute;das se explica, en parte, a que muchas mujeres que dejan de fumar durante el embarazo lo hacen con la intenci&oacute;n de volver o simplemente no reclutan otros motivos que proteger la salud del feto (Mullen et al., 1997; Bottorff et al., 2000; Curry et al., 2001). As&iacute;, cuando la causa del abandono del consumo es esta, la madre no ha desarrollado habilidades intr&iacute;nsecas para controlar el deseo y enfrentarse a situaciones de peligro, por lo que hay mas probabilidades de que se de la reca&iacute;da (Johnson et al., 2000; Mullen, Pollak y Kok, 1999). Como factores de protecci&oacute;n se encuentran dar el pecho al beb&eacute; despu&eacute;s del parto (Edwards y Sims-Jones, 1998; Ratner, Johnson, Bottorff, Dahinten, y Hall, 2000), que el ambiente social este libre de fumadores y que la pareja no sea fumadora (Pollak y Mullen., 1997). Como factores de riesgo, retomar comportamientos que hab&iacute;an sido abandonados durante el embarazo, como beber alcohol o tomar caf&eacute; (Bottorff et al., 2000) y emplear la vuelta al consumo de tabaco como una forma de controlar el peso ganado durante el embarazo (Carmichael y Ahluwalia, 2000; Groff, Mullen, Mongoven, y Burau, 1998; Mongoven, Dolan-Mullen, Groff, Nicol y Burau, 1996).</font></p>     <p>&nbsp;</p>     <p><font face="Verdana, Arial, Helvetica-Normal, sans-serif" size="3"><b>Conclusión</b></font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Tras la exhaustiva revisi&oacute;n de la literatura cient&iacute;fica que trata las caracter&iacute;sticas en el tratamiento de la adicci&oacute;n tab&aacute;quica en mujeres, los hallazgos m&aacute;s importantes son: </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">1. No existe justificaci&oacute;n cient&iacute;fica para sostener que las mujeres no se benefician de la terapia sustitutiva de la nicotina.</font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">2. Aunque las mujeres pueden tener el doble de probabilidad de padecer un desorden afectivo, no se ha demostrado que el hecho de episodios anteriores de este tipo aumente el riesgo de reca&iacute;da del tabaco. Por lo tanto, los fumadores con episodios de depresi&oacute;n tambi&eacute;n deben ser animados a dejar de fumar. </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">3.Debemos transmitir a la paciente, que el peso ganado al dejar de fumar es evitable y que los programas de control de peso utilizados durante el tratamiento del tabaquismo, son beneficiosos. No olvidemos que no todas las mujeres utilizan el cigarrillo como herramienta de control de peso. </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">4.   Existe la evidencia de la influencia del ciclo menstrual en la cesaci&oacute;n tab&aacute;quica. Por    lo que se deber&iacute;a valorar la posibilidad de planificar el momento de la cesaci&oacute;n en consonancia con los estudios analizados. </font></p>     ]]></body>
<body><![CDATA[<p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">5. Si bien, en el periodo natal es cuando se experimenta una mayor motivación para el abandono del tabaco, se hace necesario el entrenamiento en habilidades de afrontamiento a situaciones de recaída para que este perdure. </font></p>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">6. Las mujeres pueden beneficiarse del apoyo social en el tratamiento del cese tabáquico.</font>     <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">7. Si bien, en el periodo natal es cuando se experimenta una mayor motivación para el abandono del tabaco, se hace necesario el entrenamiento en habilidades de afrontamiento a situaciones de recaída para que este perdure. </font></p>     <p>&nbsp;</p>     <P><FONT face="Verdana, Arial, Helvetica-Normal, sans-serif" size=3><B>Referencias</b></font>     <!-- ref --><P><FONT face="Verdana, Arial, Helvetica-Normal, sans-serif" size=2>Allen, S. 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<body><![CDATA[<P>&nbsp;</P>     <P><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2><a href="#top"><img border="0" src="/img/revistas/clinsa/v17n1/seta.gif" width="15" height="17"></a>Fecha de Recepción: 14-11-2005</font></p>     <P><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Fecha de Aceptación:03-04-2006</font></p>       ]]></body><back>
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