<?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>2182-5173</journal-id>
<journal-title><![CDATA[Revista Portuguesa de Medicina Geral e Familiar]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Port Med Geral Fam]]></abbrev-journal-title>
<issn>2182-5173</issn>
<publisher>
<publisher-name><![CDATA[Associação Portuguesa de Medicina Geral e Familiar]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2182-51732013000300013</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Associação entre cessação tabágica e alteração de peso com a doença cardiovascular nos adultos com e sem diabetes]]></article-title>
<article-title xml:lang="en"><![CDATA[Association of Smoking Cessation and Weight Change With Cardiovascular Disease Among Adults With and Without Diabetes]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gomes]]></surname>
<given-names><![CDATA[Fernanda]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Godinho]]></surname>
<given-names><![CDATA[Jorge]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,USF Anta  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="A02">
<institution><![CDATA[,USF Canelas  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>05</month>
<year>2013</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>05</month>
<year>2013</year>
</pub-date>
<volume>29</volume>
<numero>3</numero>
<fpage>208</fpage>
<lpage>210</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S2182-51732013000300013&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S2182-51732013000300013&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S2182-51732013000300013&amp;lng=en&amp;nrm=iso"></self-uri></article-meta>
</front><body><![CDATA[ <p align="right"><b>CLUBE DE LEITURA</b></p>     <p><font size="4"><b>Associa&#231;&#227;o     entre cessa&#231;&#227;o tab&#225;gica e altera&#231;&#227;o de peso com a doen&#231;a cardiovascular nos     adultos com e sem diabetes</b></font></p>       <p><font size="3"><b>Association of Smoking Cessation and Weight     Change With Cardiovascular Disease Among Adults With and Without Diabetes</b></font></p>       <p><b>Fernanda   Gomes*, Jorge   Godinho**</b></p>       <p>*Interna em     forma&#231;&#227;o espec&#237;fica de Medicina Geral e Familiar, USF Anta</p>       <p>**Interno em   forma&#231;&#227;o espec&#237;fica de Medicina Geral e Familiar, USF Canelas</p>     <hr/>      <p>&nbsp;</p>       <p>Clair C,     Rigotti NA, Porneala B, Fox CS, D&#8217;Agostino RB, Pencina MJ, et al. Association     of smoking cessation and weight change with cardiovascular disease among adults     with and without diabetes. JAMA 2013 Mar 13; 309 (10): 1014-21.<sup>1</sup></p>       <p>&nbsp;</p>       <p><b>Enquadramento</b></p>       ]]></body>
<body><![CDATA[<p>A cessa&#231;&#227;o     tab&#225;gica reduz os riscos de doen&#231;a cardiovascular (DCV), no entanto, o ganho de     peso que condiciona pode diminuir o benef&#237;cio cardiovascular associado &#224; mesma.</p>       <p><b>Objetivo</b></p>       <p>Testar a     hip&#243;tese de que o ganho de peso associado &#224; cessa&#231;&#227;o tab&#225;gica n&#227;o diminui os     seus benef&#237;cios em indiv&#237;duos adultos diab&#233;ticos e n&#227;o diab&#233;ticos.</p>       <p><b>M&#233;todos</b></p>       <p>Estudo     coorte, prospetivo e de base comunit&#225;ria usando dados do <i>Framingham Offspring Study,</i> colhidos entre 1984 e 2011. Foram     selecionados 3 251 participantes adultos sem DCV. A cada 4 anos de estudo, os     participantes foram avaliados e categorizados, atrav&#233;s de autorrelato dos     h&#225;bitos tab&#225;gicos, como fumadores, ex-fumadores recentes (&#8804; 4 anos),     ex-fumadores a longo prazo (&gt; 4 anos) e n&#227;o fumadores. De seguida, foram     agrupados em grupos de risco proporcionais, para estimar a associa&#231;&#227;o entre a     cessa&#231;&#227;o tab&#225;gica e os eventos cardiovasculares a cada 6 anos e para testar se     a altera&#231;&#227;o de peso nos 4 anos ap&#243;s a cessa&#231;&#227;o tab&#225;gica modificava esta     associa&#231;&#227;o.</p>       <p><b><i>Outcomes</i></b></p>       <p>Incid&#234;ncia     total de eventos cardiovasculares aos 6 anos incluindo doen&#231;a coron&#225;ria,     eventos cerebrovasculares, doen&#231;a arterial perif&#233;rica e insufici&#234;ncia card&#237;aca.</p>       <p><b>Resultados</b></p>       <p>Ap&#243;s um     seguimento m&#233;dio de 25 anos, ocorreram 631 eventos cardiovasculares em 3 251     participantes. O ganho de peso m&#233;dio aos 4 anos foi maior em ex-fumadores     recentes sem diabetes (2,7 kg) e com diabetes (3,6 kg) quando comparados com os     ex-fumadores a longo prazo (0,9 kg e 0,0 kg, respetivamente). Entre os     participantes n&#227;o diab&#233;ticos, a taxa de incid&#234;ncia de DCV ajustada &#224; idade e ao     sexo foi de 5,9% nos fumadores, 3,2% nos ex-fumadores recentes, 3,1% nos     ex-fumadores a longo prazo e 2,4% nos n&#227;o fumadores. Ap&#243;s o ajuste para os     fatores de risco cardiovasculares nos doentes n&#227;o diab&#233;ticos, observou-se nos ex-fumadores     recentes um risco de DCV de 0,47 e nos ex-fumadores a longo prazo um risco de     0,46 quando comparados com os fumadores; estas associa&#231;&#245;es tiveram apenas uma     altera&#231;&#227;o m&#237;nima ap&#243;s ajuste para altera&#231;&#227;o de peso. Entre os participantes com     diabetes a redu&#231;&#227;o do risco cardiovascular associado &#224; cessa&#231;&#227;o tab&#225;gica n&#227;o     foi estatisticamente significativa.</p>       <p><b>Conclus&#245;es</b></p>       ]]></body>
<body><![CDATA[<p>A cessa&#231;&#227;o     tab&#225;gica esteve associada a um menor risco de eventos cardiovasculares entre os     participantes n&#227;o diab&#233;ticos e o consequente ganho de peso n&#227;o modificou esta     associa&#231;&#227;o. Este resultado aponta para o benef&#237;cio cardiovascular da cessa&#231;&#227;o     tab&#225;gica apesar do ganho de peso subsequente.</p>       <p><b>COMENT&#193;RIO</b></p>       <p>O tabagismo     constitui uma verdadeira epidemia e um grave problema de sa&#250;de p&#250;blica mundial.     Segundo a Organiza&#231;&#227;o Mundial de Sa&#250;de, &#233; a principal causa de morte evit&#225;vel,     sendo respons&#225;vel por cerca de 6 milh&#245;es de mortes no mundo anualmente, tendo     graves consequ&#234;ncias econ&#243;micas. Se as atuais tend&#234;ncias se mantiverem, o     tabaco matar&#225; mais de 8 milh&#245;es de pessoas por ano em 2030.<sup>2</sup></p>       <p>Em Portugal,     com base nos dados do Instituto Nacional de Estat&#237;stica de 2005/2006, 20,9% da     popula&#231;&#227;o era fumadora &#224; data do inqu&#233;rito e 18,7% fumava diariamente.<sup>3</sup> Nos &#250;ltimos anos, segundo os Inqu&#233;ritos Nacionais de Sa&#250;de realizados no nosso     pa&#237;s, verifica-se uma diminui&#231;&#227;o da preval&#234;ncia tab&#225;gica masculina e o aumento     da preval&#234;ncia tab&#225;gica feminina.<sup>4</sup></p>       <p>O tabagismo     associa-se a um elevado n&#250;mero de doen&#231;as e mais de 50% dos fumadores morrem de     patologias com ele relacionadas, estando entre as tr&#234;s principais causas de     morte a DCV, o cancro do pulm&#227;o e a doen&#231;a pulmonar obstrutiva cr&#243;nica. Neste     contexto, a cessa&#231;&#227;o tab&#225;gica est&#225; associada a uma diminui&#231;&#227;o da morbilidade e     mortalidade, independentemente da idade em que ocorre.<sup>5</sup></p>       <p>Apesar dos     benef&#237;cios da cessa&#231;&#227;o tab&#225;gica, importa referir que esta poder&#225; tamb&#233;m estar     associada a um pequeno n&#250;mero de consequ&#234;ncias para a sa&#250;de, sendo o ganho de     peso uma das principais preocupa&#231;&#245;es para os que pensam abandonar este h&#225;bito,     principalmente as mulheres. O peso m&#233;dio ganho ap&#243;s a cessa&#231;&#227;o tab&#225;gica varia     entre 3 e 6 kg, surgindo principalmente nos primeiros 6 meses e persistindo ao     longo do tempo.<sup>6</sup> A obesidade &#233; tamb&#233;m um fator de risco     cardiovascular e a mortalidade vascular aumenta cerca de 40% por cada 5     unidades no aumento do &#237;ndice de massa corporal quando este &#233; superior a 25     kg/m<sup>2</sup>.<sup>7</sup> Deste modo, coloca-se a quest&#227;o se o ganho de     peso ap&#243;s a cessa&#231;&#227;o tab&#225;gica poder&#225; diminuir os seus benef&#237;cios na DCV. Esta     preocupa&#231;&#227;o torna-se mais relevante nos diab&#233;ticos, uma vez que o ganho de peso     constitui um fator de risco para um mau controlo da doen&#231;a e consequente     aumento da morbimortalidade.<sup>8</sup></p>       <p>O objetivo     do estudo apresentado foi avaliar a associa&#231;&#227;o entre o ganho de peso ap&#243;s a     cessa&#231;&#227;o tab&#225;gica e a taxa de eventos cardiovasculares em adultos, com e sem     diabetes, e, desta forma, testar a hip&#243;tese da cessa&#231;&#227;o tab&#225;gica diminuir o     risco cardiovascular independentemente do ganho de peso associado.</p>       <p>Existem     v&#225;rios mecanismos poss&#237;veis para a diminui&#231;&#227;o do risco de DCV associados &#224;     cessa&#231;&#227;o tab&#225;gica. O tabagismo apresenta efeitos cardiovasculares a curto e a     longo prazo que s&#227;o revers&#237;veis ap&#243;s a sua cessa&#231;&#227;o. Entre eles encontram-se o     aumento da frequ&#234;ncia card&#237;aca e da contratilidade mioc&#225;rdica, a vasoconstri&#231;&#227;o     arterial, o aumento da agrega&#231;&#227;o plaquet&#225;ria, a redu&#231;&#227;o da capta&#231;&#227;o de oxig&#233;nio     e a longo-prazo a les&#227;o endotelial e a forma&#231;&#227;o de ateroma.<sup>9</sup> O     aumento do risco cardiovascular associado ao tabagismo &#233; tamb&#233;m potenciado por     outros fatores de risco cardiovasculares, tais como o aumento do colesterol LDL     e dos n&#237;veis de triglicer&#237;deos, a diminui&#231;&#227;o dos n&#237;veis de colesterol HDL ou o     aumento dos n&#237;veis de glicemia.<sup>1</sup> Alguns destes fatores de risco     cardiovascular, como os n&#237;veis de colesterol HDL ou a sensibilidade &#224; insulina,     melhoram com a cessa&#231;&#227;o tab&#225;gica, independentemente do potencial aumento de     peso.<sup>10-11</sup></p>       <p>Os pontos     fortes deste estudo incluem a capacidade de avaliar adultos, com e sem     diabetes, para estimar a rela&#231;&#227;o entre o ganho de peso ap&#243;s a cessa&#231;&#227;o tab&#225;gica     e a DCV, em exames peri&#243;dicos nos quais se registavam os par&#226;metros de     interesse eliminando vari&#225;veis de confundimento. O facto de se tratar de um     estudo coorte tamb&#233;m constitui um aspeto positivo e valorizador deste trabalho.     As limita&#231;&#245;es a serem consideradas incluem a avalia&#231;&#227;o do tabagismo atrav&#233;s de     autorrelato e a aus&#234;ncia de um m&#233;todo bioqu&#237;mico para sua confirma&#231;&#227;o. Como o <i>Framingham Study </i>envolveu     maioritariamente indiv&#237;duos de ra&#231;a branca estes resultados podem n&#227;o ser extrapol&#225;veis     a uma popula&#231;&#227;o de outra etnia.</p>       <p>Em     conclus&#227;o, entre adultos n&#227;o diab&#233;ticos a cessa&#231;&#227;o tab&#225;gica esteve associada     com menor risco de DCV. Em diab&#233;ticos verificou-se um resultado similar no     entanto sem significado estat&#237;stico. O ganho de peso que ocorreu ap&#243;s a     cessa&#231;&#227;o tab&#225;gica n&#227;o esteve associado com a redu&#231;&#227;o nos benef&#237;cios     cardiovasculares da mesma, em participantes n&#227;o diab&#233;ticos. H&#225; indubitavelmente     um benef&#237;cio cardiovascular na cessa&#231;&#227;o tab&#225;gica apesar do subsequente ganho de     peso.</p>     ]]></body>
<body><![CDATA[<p>Dos diferentes     tipos de abordagem no controlo do tabagismo, a interven&#231;&#227;o e o aconselhamento     do m&#233;dico, por compara&#231;&#227;o com a de outros profissionais, &#233; a que tem maior     impacto. Assim a cessa&#231;&#227;o tab&#225;gica ganha um importante lugar na atua&#231;&#227;o dos     m&#233;dicos nos cuidados de sa&#250;de prim&#225;rios.<sup>5</sup></p>       <p>&nbsp;</p>       <p><b>REFER&#202;NCIAS BIBLIOGR&#193;FICAS</b></p>       <!-- ref --><p>1. Clair C,     Rigotti NA, Porneala B, Fox CS, D'Agostino RB, Pencina MJ, et al. Association     of smoking cessation and weight change with cardiovascular disease among adults     with and without diabetes. JAMA 2013 Mar 13; 309 (10): 1014-21.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000036&pid=S2182-5173201300030001300001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>       <!-- ref --><p>2. World     Health Organization Report on the Global Tobacco Epidemic, 2011: Warning about     the dangers of tobacco. Geneva: World Health Organization; 2011.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000038&pid=S2182-5173201300030001300002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>       <!-- ref --><p>3. Instituto     Nacional de Sa&#250;de/ Instituto Nacional de Estat&#237;stica: 4&#186; Inqu&#233;rito Nacional de     Sa&#250;de 2005/2006. Lisboa: INE; 2007.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000040&pid=S2182-5173201300030001300003&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>       <!-- ref --><p>4.     Minist&#233;rio da Sa&#250;de, Alto Comissariado da Sa&#250;de. Estrat&#233;gias para a sa&#250;de     2004-2010. Lisboa: ACS; 2004.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000042&pid=S2182-5173201300030001300004&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>       <!-- ref --><p>5. Rigotti     NA, Rennard SI, Daughton DM. Benefits and risks of smoking cessation.     Dispon&#237;vel em: <a href="http://www.uptodate.com" target="_blank">http://www.uptodate.com</a> (acedido em 08/04/2013).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000044&pid=S2182-5173201300030001300005&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>       <!-- ref --><p>6. Filozof     C, Fern&#225;ndez Pinilla MC, Fern&#225;ndez-Cruz A. Smoking cessation and weight gain.     Obes Rev 2004 May; 5 (2): 95-103.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000046&pid=S2182-5173201300030001300006&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>       <!-- ref --><p>7. Whitlock     G, Lewington S, Sherliker P, Clarke R, Emberson J, Halsey J, et al; Prospective     Studies Collaboration. Body-mass index and cause-specific mortality in 900 000     adults: collaborative analyses of 57 prospective studies. Lancet 2009 Mar 28;     373 (9669): 1083-96.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000048&pid=S2182-5173201300030001300007&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>       <!-- ref --><p>8. Feldstein     AC, Nichols GA, Smith DH, Stevens VJ, Bachman K, Rosales AG, et al. Weight     change in diabetes and glycemic and blood pressure control. Diabetes Care 2008     Oct; 31 (10): 1960-5.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000050&pid=S2182-5173201300030001300008&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>       <!-- ref --><p>9. Benowitz     NL. Cigarette smoking and cardiovascular disease: pathophysiology and     implications for treatment. Prog Cardiovasc Dis 2003 Jul-Aug; 46 (1): 91-111.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000052&pid=S2182-5173201300030001300009&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>       <!-- ref --><p>10. Gepner     AD, Piper ME, Johnson HM, Fiore MC, Baker TB, Stein JH. Effects of smoking and     smoking cessation on lipids and lipoproteins: outcomes from a randomized     clinical trial. Am Heart J 2011 Jan; 161 (1): 145-51.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000054&pid=S2182-5173201300030001300010&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>       <!-- ref --><p>11. Eliasson     B, Attvall S, Taskinen MR, Smith U. Smoking cessation improves insulin     sensitivity in healthy middle-aged men. Eur J Clin Invest 1997 May; 27 (5):     450-6.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000056&pid=S2182-5173201300030001300011&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>       <p><b>CONFLITOS DE INTERESSE</b></p>       <p>Os autores     declaram n&#227;o existirem conflitos de interesse.</p>       <p><i>Artigo escrito ao abrigo do novo acordo     ortogr&#225;fico.</i></p>      ]]></body><back>
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<article-title xml:lang="en"><![CDATA[Association of smoking cessation and weight change with cardiovascular disease among adults with and without diabetes]]></article-title>
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