<?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>S2182-51732016000500006</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Inibidores da enzima de conversão da angiotensina ou antagonistas dos recetores da angiotensina: evidências na mortalidade e eventos cardiovasculares major em diabéticos hipertensos]]></article-title>
<article-title xml:lang="en"><![CDATA[Angiotensin converting enzyme inhibitors or angiotensin receptor blockers: evidence for their effects on mortality and major cardiovascular events in hypertensive diabetics]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mendes]]></surname>
<given-names><![CDATA[Paula]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cardoso]]></surname>
<given-names><![CDATA[Vítor Portela]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,ARS Norte  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="A02">
<institution><![CDATA[,ACES Cávado I UCSP Esporões ]]></institution>
<addr-line><![CDATA[Braga ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>10</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>10</month>
<year>2016</year>
</pub-date>
<volume>32</volume>
<numero>5</numero>
<fpage>330</fpage>
<lpage>338</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S2182-51732016000500006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S2182-51732016000500006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S2182-51732016000500006&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Objetivo: Rever a literatura, graduando a evidência do efeito dos inibidores da enzima de conversão da angiotensina (IECA) ou dos antagonistas dos receptores da angiotensina (ARA) na mortalidade ou ocorrência de eventos cardiovasculares major nos diabéticos hipertensos. Fontes de Dados: National Guideline Clearinghouse, Guidelines Finder, Canadian Medical Association Practice Guidelines, Cochrane, DARE, Bandolier, MEDLINE, Índex de Revistas Médicas Portuguesas e Direção-Geral da Saúde. Métodos: Os dois autores realizaram, de forma independente, uma pesquisa de meta-análises (MA), revisões sistemáticas (RS), ensaios clínicos aleatorizados e controlados (ECAC) e normas de orientação clínica (NOC), publicados entre 31/08/2009 e 31/08/2014, nas línguas portuguesa, espanhola, inglesa e francesa, utilizando os termos MeSH: Diabetes Mellitus AND Hypertension AND Angiotensin-Converting Enzyme Inhibitors OR Angiotensin Receptor Antagonists. Foi utilizada a escala Strength Of Recommendation Taxonomy para atribuição dos níveis de evidência (NE) e forças de recomendação (FR). Resultados: Dos 478 artigos obtidos, foram incluídas 5 MA e 6 NOC. A MA da Cochrane demonstrou que os IECA diminuíam significativamente a mortalidade por todas as causas (NE 1) e a MA de Nakao concluiu que esta classe diminuía o risco de enfarte do miocárdio (NE 1). Já o uso de ARA demonstrou diminuir o risco de AVC na MA de Savarese. A MA de Wu não demonstrou diferenças significativas entre as duas classes. Recentemente, a MA de Cheng verificou que os IECA diminuíam significativamente a mortalidade por todas as causas, a mortalidade cardiovascular, o enfarte do miocárdio e a insuficiência cardíaca (NE 1). Nesta MA, os ARA diminuíram o risco de insuficiência cardíaca. A maioria das NOC incluídas recomendava os IECA ou ARA como primeira linha. Conclusões: Nos diabéticos, os efeitos dos IECA e ARA parecem ser diferentes relativamente à mortalidade e eventos cardiovasculares. A evidência encontrada foi robusta e consistentemente favoreceu o uso de IECA como primeira opção na prevenção da morbi-mortalidade nesta população (FR A)]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Objective: Our aim was to assess the evidence for the effects of angiotensin converting enzyme (ACE) inhibitors or angiotensin receptor blockers (ARB) on mortality and major cardiovascular events in individuals with hypertension and diabetes. Data Sources: National Guideline Clearinghouse, Guidelines Finder, Canadian Medical Association Practice Guidelines, Cochrane Library, DARE, Bandolier, MEDLINE, Index of Portuguese Medical Journals and General Directorate of Health databases. Methods: The two authors independently performed a search of meta-analyzes (MA), systematic reviews (SR), randomized clinical trials (RCT) and clinical practice guidelines (CPG), published between 31/08/2009 and 31/08/2014 in Portuguese, Spanish, English and French languages. We used the MeSH terms: Diabetes Mellitus AND Hypertension AND Angiotensin-Converting Enzyme Inhibitors OR Angiotensin Receptor Antagonists. The strength of recommendation taxonomy scale was used for the allocation of levels of evidence (LE) and strength of recommendation (SR). Results: Of the 478 articles found, we included five MA and sixCPG in this report. A Cochrane MA showed that ACE inhibitors significantly decreased mortality from all causes (LE 1) and one MA concluded that this class of medications decreased the risk of myocardial infarction (LE 1). The use of ARB was shown to decrease the risk of stroke in one MA. Another MA showed no significant differences between the two classes of drugs. A recent MA found that ACE inhibitors significantly decreased all-cause mortality, cardiovascular mortality, myocardial infarction, and heart failure (LE 1). In the same MA, ARB decreased the risk of heart failure. Most guidelines recommend ACE inhibitors or ARBs as first line therapy for hypertension in diabetic patients. Conclusions: The effects of ACE inhibitors and ARB on mortality and cardiovascular events appear to be different. We found consistent evidence favoring the use of ACE inhibitors as a first option in preventing morbidity and mortality in this population (SR A)]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[Diabetes mellitus]]></kwd>
<kwd lng="pt"><![CDATA[Hipertensão arterial]]></kwd>
<kwd lng="pt"><![CDATA[Inibidores da enzima conversora da angiotensina]]></kwd>
<kwd lng="en"><![CDATA[Diabetes mellitus]]></kwd>
<kwd lng="en"><![CDATA[Hypertension]]></kwd>
<kwd lng="en"><![CDATA[Inhibitors of angiotensin converting enzyme]]></kwd>
<kwd lng="en"><![CDATA[Angiotensin receptor antagonists]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="right"><font size="2"><b>REVIS&#213;ES</b></font></p>     <p><font size="4"><b>Inibidores da enzima de convers&#227;o da     angiotensina ou antagonistas dos recetores da angiotensina: evid&#234;ncias na     mortalidade e eventos cardiovasculares major em diab&#233;ticos hipertensos</b></font></p>     <p><font size="3"><b>Angiotensin     converting enzyme inhibitors or angiotensin receptor blockers: evidence for     their effects on mortality and major cardiovascular events in hypertensive   diabetics</b></font></p>       <p><b>Paula Mendes,<sup>1</sup> V&#237;tor Portela     Cardoso<sup>2</sup></b></p>       <p><sup>1</sup>M&#233;dica     Assistente de Medicina Geral e Familiar. ARS Norte</p>       <p><sup>2</sup>M&#233;dico     Assistente de Medicina Geral e Familiar. UCSP Espor&#245;es, ACES C&#225;vado I -     Braga</p>       <p><a href="#c0">Endere&ccedil;o para correspond&ecirc;ncia</a> | <a href="#c0">Direcci&oacute;n para correspondencia</a> | <a href="#c0">Correspondence</a><a name="topc0"></a></p> <hr/>     <p>&nbsp;</p>     <p><b>RESUMO</b></p>       <p><b>Objetivo:</b> Rever a literatura, graduando     a evid&#234;ncia do efeito dos inibidores da enzima de convers&#227;o da angiotensina     (IECA) ou dos antagonistas dos receptores da angiotensina (ARA) na mortalidade     ou ocorr&#234;ncia de eventos cardiovasculares <i>major</i> nos diab&#233;ticos hipertensos.</p>       ]]></body>
<body><![CDATA[<p><b>Fontes de Dados:</b> <i>National Guideline Clearinghouse, Guidelines Finder, Canadian Medical     Association Practice Guidelines, Cochrane,</i> DARE, <i>Bandolier,</i> MEDLINE, &#205;ndex de Revistas M&#233;dicas Portuguesas e     Dire&#231;&#227;o-Geral da Sa&#250;de.</p>       <p><b>M&#233;todos: </b>Os dois autores realizaram, de     forma independente, uma pesquisa de meta-an&#225;lises (MA), revis&#245;es sistem&#225;ticas     (RS), ensaios cl&#237;nicos aleatorizados e controlados (ECAC) e normas de     orienta&#231;&#227;o cl&#237;nica (NOC), publicados entre 31/08/2009 e 31/08/2014, nas l&#237;nguas     portuguesa, espanhola, inglesa e francesa, utilizando os termos MeSH: <i>Diabetes Mellitus</i> AND <i>Hypertension</i> AND <i>Angiotensin-Converting Enzyme Inhibitors</i> OR <i>Angiotensin Receptor Antagonists.</i> Foi utilizada a escala <i>Strength Of Recommendation Taxonomy</i> para     atribui&#231;&#227;o dos n&#237;veis de evid&#234;ncia (NE) e for&#231;as de recomenda&#231;&#227;o (FR).</p>       <p><b>Resultados:</b> Dos 478 artigos obtidos,     foram inclu&#237;das 5 MA e 6 NOC. A MA da Cochrane demonstrou que os IECA diminu&#237;am     significativamente a mortalidade por todas as causas (NE 1) e a MA de Nakao     concluiu que esta classe diminu&#237;a o risco de enfarte do mioc&#225;rdio (NE 1). J&#225; o     uso de ARA demonstrou diminuir o risco de AVC na MA de Savarese. A MA de Wu n&#227;o     demonstrou diferen&#231;as significativas entre as duas classes. Recentemente, a MA     de Cheng verificou que os IECA diminu&#237;am significativamente a mortalidade por     todas as causas, a mortalidade cardiovascular, o enfarte do mioc&#225;rdio e a     insufici&#234;ncia card&#237;aca (NE 1). Nesta MA, os ARA diminu&#237;ram o risco de     insufici&#234;ncia card&#237;aca. A maioria das NOC inclu&#237;das recomendava os IECA ou ARA     como primeira linha.</p>       <p><b>Conclus&#245;es:</b> Nos diab&#233;ticos, os efeitos     dos IECA e ARA parecem ser diferentes relativamente &#224; mortalidade e eventos     cardiovasculares. A evid&#234;ncia encontrada foi robusta e consistentemente     favoreceu o uso de IECA como primeira op&#231;&#227;o na preven&#231;&#227;o da morbi-mortalidade     nesta popula&#231;&#227;o (FR A).</p>       <p><b>Palavras-chave (DeCS):</b> Diabetes     mellitus; Hipertens&#227;o arterial; Inibidores da enzima conversora da     angiotensina; Antagonistas de receptores da angiotensina.</p> <hr/>     <p>&nbsp;</p>    <p><b>ABSTRACT</b></p>       <p><b>Objective:</b> Our aim was to assess the     evidence for the effects of angiotensin converting enzyme (ACE) inhibitors or     angiotensin receptor blockers (ARB) on mortality and major cardiovascular   events in individuals with hypertension and diabetes.</p>       <p><b>Data Sources:</b> National Guideline     Clearinghouse, Guidelines Finder, Canadian Medical Association Practice     Guidelines, Cochrane Library, DARE, Bandolier, MEDLINE, Index of Portuguese     Medical Journals and General Directorate of Health databases.</p>       <p><b>Methods:</b> The two authors independently     performed a search of meta-analyzes (MA), systematic reviews (SR), randomized     clinical trials (RCT) and clinical practice guidelines (CPG), published between     31/08/2009 and 31/08/2014 in Portuguese, Spanish, English and French languages.     We used the MeSH terms: <i>Diabetes Mellitus</i> AND <i>Hypertension</i> AND <i>Angiotensin-Converting Enzyme Inhibitors</i> OR <i>Angiotensin Receptor Antagonists.</i> The strength of recommendation taxonomy scale was used for the allocation of     levels of evidence (LE) and strength of recommendation (SR).</p>       ]]></body>
<body><![CDATA[<p><b>Results:</b> Of the 478 articles found, we     included five MA and sixCPG in this report. A Cochrane MA showed that ACE     inhibitors significantly decreased mortality from all causes (LE 1) and one MA     concluded that this class of medications decreased the risk of myocardial     infarction (LE 1). The use of ARB was shown to decrease the risk of stroke in     one MA. Another MA showed no significant differences between the two classes of     drugs. A recent MA found that ACE inhibitors significantly decreased all-cause     mortality, cardiovascular mortality, myocardial infarction, and heart failure     (LE 1). In the same MA, ARB decreased the risk of heart failure. Most     guidelines recommend ACE inhibitors or ARBs as first line therapy for     hypertension in diabetic patients.</p>       <p><b>Conclusions:</b> The effects of ACE     inhibitors and ARB on mortality and cardiovascular events appear to be     different. We found consistent evidence favoring the use of ACE inhibitors as a     first option in preventing morbidity and mortality in this population (SR A).</p>       <p><b>Keywords (MeSH terms):</b> Diabetes     mellitus; Hypertension; Inhibitors of angiotensin converting enzyme;     Angiotensin receptor antagonists.</p>   <hr/>     <p>&nbsp;</p>    <p><b>Introdu&#231;&#227;o</b></p>       <p>A     hipertens&#227;o arterial (HTA) &#233; uma comorbilidade comum da diabetes mellitus (DM),<sup>1-2</sup> estimando-se que at&#233; 70,9% dos indiv&#237;duos diab&#233;ticos em Portugal sejam     hipertensos.<sup>3</sup> Estas duas patologias s&#227;o fatores de risco     independentes e aditivos para doen&#231;a cardiovascular (DCV).<sup>1-2,4</sup> Esta     &#233; a principal causa de morbi-mortalidade em pessoas com DM, sendo respons&#225;vel     por 50% ou mais de todas as mortes.<sup>1</sup> Foi demonstrado que o controlo     dos fatores de risco cardiovasculares era eficaz na preven&#231;&#227;o ou no retardar da     DCV nestes indiv&#237;duos.<sup>1</sup></p>       <p>Existe uma     vasta variedade de f&#225;rmacos anti-hipertensores. As &#250;ltimas recomenda&#231;&#245;es da <i>European Society of Hypertension/European     Society of Cardiology</i> (ESH/ESC) afirmam que os principais benef&#237;cios da     terap&#234;utica anti-hipertensora se devem &#224; diminui&#231;&#227;o da press&#227;o arterial <i>per se</i> e s&#227;o, em grande parte,     independentes do f&#225;rmaco utilizado.<sup>4</sup></p>       <p>O sistema     renina-angiotensina-aldosterona (SRAA) &#233; um importante regulador cardiovascular     e renal, sendo que a sua desregula&#231;&#227;o perpetua uma cascata pr&#243;-inflamat&#243;ria,     pr&#243;-tromb&#243;tica e aterog&#233;nica, que est&#225; na base das les&#245;es de &#243;rg&#227;o-alvo.<sup>5</sup> Algumas meta-an&#225;lises (MA) demonstraram que a supress&#227;o deste sistema reduzia a     mortalidade cardiovascular nos indiv&#237;duos hipertensos com ou sem DM.<sup>6-7</sup></p>       <p>Os     inibidores da enzima de convers&#227;o da angiotensina (IECA) e os antagonistas dos     recetores da angiotensina (ARA) s&#227;o os principais f&#225;rmacos utilizados no     bloqueio do SRAA, atrav&#233;s de diferentes mecanismos de a&#231;&#227;o.<sup>5,8</sup> Os     IECA inibem a enzima que converte a angiotensina (ANG) I em II (subst&#226;ncia     vasoconstritora), mas n&#227;o bloqueiam toda a produ&#231;&#227;o de ANG II. Al&#233;m da via     cl&#225;ssica, 40% da ANG II &#233; produzida por uma via alternativa, o chamado     &#8220;fen&#243;meno de escape&#8221;. Por sua vez, os ARA atuam no final da cascata do SRAA,     inibindo a liga&#231;&#227;o da ANG II ao recetor AT1. Uma vez que estas duas classes     (IECA e ARA) atuam em diferentes locais do SRAA, questionou-se se os resultados     relativos ao risco de morte ou eventos cardiovasculares seriam tamb&#233;m     diferentes.<sup>5</sup> O estudo HOPE (de 2000), demonstrou uma diminui&#231;&#227;o de     eventos cardiovasculares com o ramipril.<sup>9</sup> Mais tarde, o ensaio     cl&#237;nico ROADMAP (de 2011) demonstrou que no grupo tratado com olmesartan houve     um maior n&#250;mero de eventos cardiovasculares fatais comparativamente com o     placebo (15 <i>vs</i> 3, <i>p</i>=0,01).10 No mesmo ano foi publicado     outro ensaio cl&#237;nico (ORIENT), cujos resultados mostraram que o uso de     olmesartan se associava ao aumento do risco de mortalidade cardiovascular nos     diab&#233;ticos com nefropatia.<sup>11</sup></p>       <p>Perante     estes resultados, a <i>United States Food     and Drug Administration</i> (FDA) realizou uma revis&#227;o de seguran&#231;a. No &#250;ltimo     comunicado em 2014, esta institui&#231;&#227;o conclu&#237;a que n&#227;o havia uma evid&#234;ncia clara     para o aumento de risco cardiovascular com o uso de olmesartan em diab&#233;ticos     hipertensos, n&#227;o alterando as recomenda&#231;&#245;es para o uso deste f&#225;rmaco.<sup>12</sup></p>       ]]></body>
<body><![CDATA[<p>Inicialmente,     os ARA foram apontados como sendo mais ben&#233;ficos que os IECA, uma vez que o     mecanismo de a&#231;&#227;o dos ARA n&#227;o se associa a &#8220;fen&#243;menos de escape&#8221; de produ&#231;&#227;o de     ANG II.<sup>13</sup> No entanto, alguns estudos sugeriram que a     hiperestimula&#231;&#227;o que os ARA exercem nos recetores AT1 n&#227;o seria assim t&#227;o     ben&#233;fica, podendo mesmo causar hipertrofia card&#237;aca, fibrose vascular e     diminui&#231;&#227;o da neovasculariza&#231;&#227;o.<sup>14</sup> Al&#233;m disso, uma poss&#237;vel     explica&#231;&#227;o para o benef&#237;cio cardioprotetor dos IECA, relativamente aos ARA,     presume-se que se possa dever ao facto dos IECA tamb&#233;m atuarem no sistema das     bradicininas. Ao inibirem a convers&#227;o da bradicinina em pept&#237;deos inativos, o     aumento da bradicinina exerce efeitos vasodilatadores e de inibi&#231;&#227;o da     agrega&#231;&#227;o plaquet&#225;ria.<sup>14</sup></p>       <p>Apesar dos     diversos resultados obtidos nos estudos, o padr&#227;o de prescri&#231;&#227;o de     anti-hipertensores em Portugal revelou um crescimento de 54% na prescri&#231;&#227;o de     ARA de 2000 para 2011. De facto, em 2011, a prescri&#231;&#227;o de IECA e ARA em     monoterapia era sobrepon&#237;vel, respetivamente, 10,3% e 9,8%. J&#225; nos regimes     isolados ou em associa&#231;&#227;o, a prescri&#231;&#227;o de ARA em Portugal era superior (31%)     relativamente a Inglaterra (11%).<sup>15</sup></p>       <p>O objetivo     deste trabalho foi rever a evid&#234;ncia do efeito dos IECA ou ARA nos indiv&#237;duos     diab&#233;ticos hipertensos quanto &#224; mortalidade por todas as causas, mortalidade     cardiovascular ou ocorr&#234;ncia de eventos cardiovasculares <i>major.</i></p>       <p><b>M&#233;todos</b></p>       <p>Foi     realizada uma pesquisa de MA, revis&#245;es sistem&#225;ticas (RS), ensaios cl&#237;nicos     aleatorizados e controlados (ECAC) e normas de orienta&#231;&#227;o cl&#237;nica (NOC) nas     seguintes fontes de dados: <i>National     Guideline Clearinghouse, Guidelines Finder, Canadian Medical Association     Practice Guidelines, Cochrane,</i> DARE, <i>Bandolier,</i> MEDLINE, Dire&#231;&#227;o-Geral da Sa&#250;de (DGS) e &#205;ndex de Revistas M&#233;dicas Portuguesas.     Para isso foram utilizados os termos MeSH: <i>Diabetes     Mellitus </i>AND <i>Hypertension</i> AND <i>Angiotensin-Converting Enzyme Inhibitors</i> OR <i>Angiotensin Receptor Antagonists</i> e     os termos DeCS correspondentes: <i>Diabetes     Mellitus</i> e <i>Hipertens&#227;o e Inibidores     da enzima conversora da angiotensina</i> ou <i>Antagonistas     de receptores da angiotensina.</i> Inclu&#237;ram-se os artigos publicados entre 31     de agosto de 2009 e 31 de agosto de 2014 nas l&#237;nguas portuguesa, inglesa,     francesa e espanhola.</p>       <p>Os dois     autores realizaram a sele&#231;&#227;o dos artigos de forma independente e oculta um do     outro. No caso de opini&#245;es divergentes &#224; inclus&#227;o/exclus&#227;o de um artigo, os     autores decidiram em consenso ap&#243;s discuss&#227;o argumentativa. A avalia&#231;&#227;o final     da qualidade e n&#237;vel de evid&#234;ncia dos artigos inclu&#237;dos foi realizada     conjuntamente.</p>       <p>Foram     inclu&#237;dos os artigos cuja popula&#231;&#227;o fosse constitu&#237;da por indiv&#237;duos diab&#233;ticos     hipertensos com idade igual ou superior a 18 anos, sendo a interven&#231;&#227;o o uso de     IECA ou ARA em monoterapia (independentemente do tipo ou da dose)     comparativamente com placebo, ARA ou IECA ou ainda outro anti-hipertensor. Os     resultados a avaliar foram a mortalidade por todas as causas, a mortalidade     c&#233;rebro-cardiovascular e os eventos cardiovasculares <i>major,</i> nomeadamente enfarte agudo do mioc&#225;rdio (EAM), acidente     vascular cerebral (AVC) e insufici&#234;ncia card&#237;aca (IC).</p>       <p>Foram usados     como crit&#233;rios de exclus&#227;o: artigos duplicados, estudos observacionais e     estudos que inclu&#237;ssem gr&#225;vidas ou indiv&#237;duos com doen&#231;a renal terminal, uma     vez que estes apresentam taxas de eventos cardiovasculares superiores aos     restantes diab&#233;ticos, al&#233;m de que t&#234;m respostas diferentes aos     anti-hipertensores. </p>       <p>N&#227;o foram,     ainda, inclu&#237;dos estudos dirigidos &#224; avalia&#231;&#227;o da rela&#231;&#227;o custo-efetividade,     efeitos laterais dos f&#225;rmacos, nem a qualidade de vida dos indiv&#237;duos.</p>       <p>Foi adotada     a escala <i>Strengh of Recommendation     Taxonomy</i> (SORT), da <i>American Academy     of Family Physicians,</i> para a avalia&#231;&#227;o dos n&#237;veis de evid&#234;ncia (NE) e     atribui&#231;&#227;o de for&#231;as de recomenda&#231;&#227;o (FR).<sup>16</sup></p>       ]]></body>
<body><![CDATA[<p><b>Resultados</b></p>       <p>Obteve-se um     total de 478 refer&#234;ncias, das quais foram selecionadas 11: cinco MA e seis NOC. O fluxograma da sele&#231;&#227;o dos artigos est&#225; representado na <a href="#f1">Figura 1</a>.</p>       <p>&nbsp;</p>    <p align="center"><a name="f1"></a><img src="/img/revistas/rpmgf/v32n5/32n5a06f1.jpg"/></p>    
<p>&nbsp;</p>       <p>A MA de     Cheng e colaboradores (2014) incluiu 35 ECAC num total de 56.444 indiv&#237;duos com     diabetes maioritariamente hipertensos (<a href="/img/revistas/rpmgf/v32n5/32n5a06q1.jpg" target="_blank">Quadro I</a>).<sup>17</sup> Os autores     conclu&#237;ram que os IECA diminu&#237;am significativamente o risco de mortalidade por     todas as causas em 13% (RR=0,87; IC95% 0,78-0,98), o risco de mortalidade cardiovascular     em 17% (RR=0,83; IC95% 0,70-0,99) e os eventos cardiovasculares em 14%     (RR=0,86; IC95% 0,77-0,95), nomeadamente EAM em 21% e IC em 19%,     comparativamente com o placebo, sem tratamento ou outro anti-hipertensor. Por     sua vez, os ARA n&#227;o demonstraram reduzir significativamente a mortalidade por     todas as causas nem a mortalidade cardiovascular. Relativamente aos eventos     cardiovasculares <i>major,</i> os ARA apenas     diminu&#237;ram significativamente o risco de IC em 30% (RR=0,70; IC95% 0,59-0,82).     Nenhuma das classes diminuiu o risco de AVC. Os autores desta MA conclu&#237;ram que     os IECA deviam ser considerados como primeira linha para preven&#231;&#227;o da     morbi-mortalidade nos indiv&#237;duos com DM. Os autores desta MA avaliaram a     qualidade dos estudos inclu&#237;dos, tendo 60% pontuado mais de tr&#234;s pontos na     escala de <i>Jadad.</i> Pela boa qualidade     dos estudos inclu&#237;dos e por estarem orientados para o paciente foi atribu&#237;do a     esta MA um NE 1.</p>      
<p>&nbsp;</p>    <p align="center"><a href="/img/revistas/rpmgf/v32n5/32n5a06q1.jpg" target="_blank"><img src="/img/revistas/rpmgf/v32n5/32n5a06q1.jpg" width="300" height="167"/><br />(clique para ampliar ! click to enlarge)</a></p>    
<p>&nbsp;</p>       <p>Em 2011, a     MA de Wu e colaboradores, que estudou diab&#233;ticos hipertensos, n&#227;o demonstrou     resultados significativos na redu&#231;&#227;o da mortalidade por todas as causas com o     uso de IECA, comparativamente com os ARA (<a href="/img/revistas/rpmgf/v32n5/32n5a06q1.jpg" target="_blank">Quadro I</a>).<sup>18</sup> Foram tamb&#233;m     estudados os efeitos dos bloqueadores dos canais do c&#225;lcio (BCC), bloqueadores     beta adren&#233;rgicos (BB) e diur&#233;ticos. Wu e colaboradores categorizaram os     anti-hipertensores pela probabilidade de melhor op&#231;&#227;o terap&#234;utica na redu&#231;&#227;o da     mortalidade por todas as causas. Assim, em primeiro lugar, colocaram a     associa&#231;&#227;o IECA com BCC, seguida da associa&#231;&#227;o IECA com diur&#233;tico, em terceiro     lugar IECA em monoterapia e em sexto lugar ARA. Os autores realizaram a MA     atrav&#233;s do modelo <i>Bayesiano,</i> que     combinou a compara&#231;&#227;o direta e indireta dos estudos, estimando assim os efeitos     relativos entre os anti-hipertensores estudados. Os autores desta MA conclu&#237;ram     que tendo em conta os custos, os IECA deviam ser usados como primeira linha no     tratamento da HTA em diab&#233;ticos. Foi atribu&#237;do &#224; MA de Wu um NE 1.</p>       
]]></body>
<body><![CDATA[<p>Nakao e     colaboradores publicaram, em 2011, uma MA que estudou 19 ECAC em indiv&#237;duos com     diabetes maioritariamente hipertensos. Os resultados demonstraram que o     bloqueio do SRAA diminu&#237;a significativamente o risco de eventos     cardiovasculares <i>major</i> e EAM,     comparativamente com o placebo ou outros anti-hipertensores (<a href="/img/revistas/rpmgf/v32n5/32n5a06q1.jpg" target="_blank">Quadro I</a>).<sup>19</sup> Al&#233;m disso, verificaram uma tend&#234;ncia para a diminui&#231;&#227;o do risco do resultado     composto MACE (mortalidade CV, EAM e AVC n&#227;o fatal). Especificando por classe     terap&#234;utica, Nakao e colaboradores conclu&#237;ram que apenas os IECA diminu&#237;am o     risco de EAM e mostraram uma tend&#234;ncia para diminuir o MACE. Adicionalmente, os     resultados obtidos quanto &#224; aus&#234;ncia de benef&#237;cio com os ARA n&#227;o se modificavam     quando eram exclu&#237;dos os ECAC, como o ROADMAP. Todos os estudos foram     classificados com qualidade suficiente pela escala <i>Agency for Healthcare Research and Quality for Sistematic Reviews.</i> Foi atribu&#237;do &#224; MA de Nakao um NE 1.</p>       
<p>A quarta MA     inclu&#237;da teve a chancela da Cochrane e foi publicada em 2012. Incluiu 22 ECAC,     em indiv&#237;duos com diabetes maioritariamente com HTA (<a href="/img/revistas/rpmgf/v32n5/32n5a06q1.jpg" target="_blank">Quadro I</a>).<sup>20</sup> Os     IECA diminu&#237;ram significativamente o risco de mortalidade por todas as causas     quando comparados com o placebo ou sem tratamento. Em oposi&#231;&#227;o, n&#227;o houve     diminui&#231;&#227;o na mortalidade por todas as causas com os ARA, comparativamente com     placebo/sem tratamento. Apesar da aparente superioridade dos IECA, nos cinco     estudos em que houve compara&#231;&#227;o direta com os ARA n&#227;o foram encontradas     diferen&#231;as significativas na mortalidade por todas as causas. Os autores desta     MA conclu&#237;ram que os IECA podiam ser rotineiramente considerados para a     preven&#231;&#227;o prim&#225;ria da mortalidade em diab&#233;ticos, independentemente dos n&#237;veis     de press&#227;o arterial, embora fossem necess&#225;rios mais estudos para avaliar a     rela&#231;&#227;o custo-efetividade desta abordagem. Foi atribu&#237;do &#224; MA da <i>Cochrane</i> um NE 1.</p>       
<p>Savarese e     colaboradores publicaram, em 2013, a sua MA onde analisaram 26 ECAC. Destes, os     autores da presente revis&#227;o apenas optaram por incluir os ECAC relativos aos     ARA, uma vez que os ECAC que estudaram os IECA tinham sido maioritariamente     realizados em indiv&#237;duos sem DM (<a href="/img/revistas/rpmgf/v32n5/32n5a06q1.jpg" target="_blank">Quadro I</a>).<sup>21</sup> Esta MA obteve um     resultado singular, associando o uso de ARA a uma diminui&#231;&#227;o significativa do     risco de AVC em 9,1% (RR=0,70; IC95% 0,59-0,82) e do resultado composto     (mortalidade CV, EAM e AVC) em 7% (RR 0,92; IC95% 0,869-0,975). Conclu&#237;ram o     seu trabalho afirmando que os ARA eram uma op&#231;&#227;o v&#225;lida para a redu&#231;&#227;o da     morbi-mortalidade quando os IECA n&#227;o pudessem ser usados. Foi atribu&#237;do a esta     MA um NE 1.</p>       
<p>Foram ainda     inclu&#237;das seis NOC (<a href="/img/revistas/rpmgf/v32n5/32n5a06q2.jpg" target="_blank">Quadro II</a>). Todas eram baseadas na evid&#234;ncia, sendo que a     ESH/ESC era tamb&#233;m suportada por opini&#227;o de peritos. No geral, nenhuma d&#225;     prefer&#234;ncia a uma &#250;nica classe farmacol&#243;gica no tratamento da HTA em diab&#233;ticos.</p>       
<p>&nbsp;</p>    <p align="center"><a href="/img/revistas/rpmgf/v32n5/32n5a06q2.jpg" target="_blank"><img src="/img/revistas/rpmgf/v32n5/32n5a06q2.jpg" width="300" height="167"/><br />(clique para ampliar ! click to enlarge)</a></p>    
<p>&nbsp;</p>       <p>A ESH/ESC,     emitida em 2013, refere que todas as classes anti-hipertensoras podem ser     usadas em doentes com diabetes, devendo-se individualizar a prescri&#231;&#227;o conforme     as comorbilidades dos pacientes.<sup>4</sup> Acrescenta ainda que os     bloqueadores do SRAA podem ser preferidos, especialmente na presen&#231;a de     microalbumin&#250;ria ou protein&#250;ria. Estas recomenda&#231;&#245;es basearam-se numa revis&#227;o     cl&#225;ssica de 2007<sup>22</sup> e numa RS de 2005.<sup>23</sup></p>       <p>A mais     recente <i>Eight Joint National Committee</i> (JNC 8) tamb&#233;m recomenda o uso de um diur&#233;tico tiaz&#237;dico, BCC, IECA ou ARA, na     popula&#231;&#227;o em geral, incluindo indiv&#237;duos diab&#233;ticos. Nos indiv&#237;duos de ra&#231;a     negra com DM, o tratamento anti-hipertensivo inicial recomendado dever&#225; incluir     um diur&#233;tico tiaz&#237;dico ou um BCC.<sup>24</sup> Para emitir estas recomenda&#231;&#245;es,     os autores apenas inclu&#237;ram ECAC que comparassem diferentes classes     farmacol&#243;gicas frente-a-frente. Optaram ainda por n&#227;o incluir um ECAC que     comparou os efeitos do ramipril com o telmisartan (ONTARGET), justificando que     neste estudo a HTA n&#227;o fora um requisito de inclus&#227;o dos participantes.<sup>25</sup> </p>       <p>Tanto a NOC <i>European Society of Cardiology/European     Association for the Study of Diabetes</i> (ESC/EASD),<sup>26</sup> de 2013,     como a da <i>American Diabetes Association</i> (ADA),<sup>1</sup> de 2014, recomendaram o uso de um bloqueador do SRAA (IECA     ou ARA) no tratamento da hipertens&#227;o em diab&#233;ticos, n&#227;o emitindo prefer&#234;ncia     por nenhuma das duas classes. A ADA acrescenta que se uma classe n&#227;o for     tolerada, dever&#225; ser substitu&#237;da pela outra. Foi atribu&#237;da uma FR A &#224; NOC     europeia por ser baseada em quatro ECAC que compararam IECA ou ARA com outras     classes farmacol&#243;gicas. Os autores da NOC da ADA recomendam os bloqueadores do     SRAA relativamente a outras classes, apesar de admitirem que os resultados     destes f&#225;rmacos s&#227;o conflituosos quando aos efeitos cardiovasculares. Esta NOC     baseia-se na JNC 7, que incluiu estudos entre 1997 e 2003.<sup>13</sup></p>       ]]></body>
<body><![CDATA[<p>As     recomenda&#231;&#245;es da <i>Canadian Diabetes     Association</i> (2013) advogam o uso de IECA ou ARA em doses que demonstrem     prote&#231;&#227;o vascular nos indiv&#237;duos diab&#233;ticos hipertensos com doen&#231;a     macrovascular cl&#237;nica, idade igual ou superior a 55 anos com um fator de risco     adicional ou les&#227;o &#243;rg&#227;o-alvo, idade inferior a 55 anos e complica&#231;&#245;es     microvasculares.<sup>27</sup> Acrescentam ainda que, para os indiv&#237;duos n&#227;o     inclu&#237;dos nos t&#243;picos anteriores, a terapia inicial apropriada dever&#225; incluir     (sem ordem de prefer&#234;ncia) IECA, ARA, BCC e diur&#233;ticos tiaz&#237;dicos. Os autores     desta NOC suportam as suas recomenda&#231;&#245;es numa MA de 2012, a qual n&#227;o encontrou     diferen&#231;as na diminui&#231;&#227;o de eventos cardiovasculares entre&nbsp; IECA ou ARA.     Por&#233;m, esta MA incluiu ECAC realizados em pessoas normotensas com ou sem     diabetes.<sup>28</sup></p>       <p>Por &#250;ltimo,     a <i>Institute for Clinical Systems     Improvement</i> (ICSI) recomenda um bloqueador do SRAA no tratamento inicial da     hipertens&#227;o em DM, afirmando que tanto os IECA com os ARA reduziam a progress&#227;o     para complica&#231;&#245;es macrovasculares.<sup>29</sup> Estas recomenda&#231;&#245;es basearam-se     no ECAC HOPE (2000)<sup>9</sup> e noutro de 2001, realizado por Lewis e     colaboradores, apesar deste n&#227;o ter revelado diferen&#231;as nas taxas de     mortalidade associadas ao uso de irbesartan comparativamente com amlodipina     (houve apenas melhoria para marcadores interm&#233;dios renais com o ARA).<sup>30</sup></p>       <p>As     recomenda&#231;&#245;es nacionais da DGS (2013) n&#227;o foram inclu&#237;das na presente revis&#227;o,     dado que n&#227;o s&#227;o evidentes os m&#233;todos da sua elabora&#231;&#227;o nem s&#227;o percet&#237;veis as     bases bibliogr&#225;ficas que as suportam.<sup>31</sup></p>       <p><b>Conclus&#245;es</b></p>       <p>A evid&#234;ncia     dispon&#237;vel foi robusta e consistentemente favoreceu o uso de IECA como primeira     op&#231;&#227;o na preven&#231;&#227;o da morbi-mortalidade cardiovascular nesta popula&#231;&#227;o (FR A).</p>       <p>Apesar das MA     demonstrarem uma diferen&#231;a do efeito dos IECA e ARA na mortalidade     cardiovascular em diab&#233;ticos hipertensos, as NOC n&#227;o emitem uma prefer&#234;ncia     entre estas duas classes. Os autores da presente revis&#227;o desconhecem o motivo     pelo qual as MA apresentadas nesta revis&#227;o n&#227;o foram inclu&#237;das na elabora&#231;&#227;o de     nenhuma NOC. Curiosamente, a ADA emitiu novas recomenda&#231;&#245;es em 2016, mantendo o     mesmo conte&#250;do pr&#233;vio relativamente ao tratamento farmacol&#243;gico da HTA em     indiv&#237;duos com DM, bem como do suporte bibliogr&#225;fico que o sustenta.<sup>32</sup></p>       <p>Al&#233;m disso,     a maioria das NOC n&#227;o incluiu os ECAC que estudaram os ARA, que foram     maioritariamente publicados ap&#243;s 2005 (nomeadamente ORIENT e ROADMAP). Por     outro lado, em v&#225;rias NOC h&#225; falta de clareza na declara&#231;&#227;o de conflitos de     interesse dos autores. Na NOC da JNC 8, os conflitos de interesse devem ser     tidos em conta na sua interpreta&#231;&#227;o, uma vez que v&#225;rios autores afirmaram ser     consultores e receber honor&#225;rios de v&#225;rias empresas de ind&#250;stria farmac&#234;utica.     A NOC do ISCI &#233; clara na inexist&#234;ncia de conflitos de interesse.</p>     <p>Apesar da     melhor evid&#234;ncia exposta neste trabalho, h&#225; que considerar algumas limita&#231;&#245;es.     Transversal a todas as MA inclu&#237;das foi a compara&#231;&#227;o maioritariamente indireta     entre IECA e ARA. Os poucos estudos que compararam diretamente IECA com ARA n&#227;o     demonstraram existir diferen&#231;as entre as classes ou demonstraram melhores     resultados para os IECA, mas sem diferen&#231;as estatisticamente significativas     (e.g., DETAIL, 2004).<sup>20,33</sup> Por outro lado, &#233; de referir a     heterogeneidade nos estudos quanto &#224; popula&#231;&#227;o, nomeadamente a percentagem de     HTA e doen&#231;a coron&#225;ria. Al&#233;m disso, o volume de ECAC que incidiram sobre IECA     era ainda frequentemente superior aos ARA. Alguns destes aspetos s&#227;o claramente     identificados pelos autores das MA de Cheng e Wu e seus colaboradores.</p>       <p>Saliente-se     a pertin&#234;ncia dos resultados obtidos para a pr&#225;tica cl&#237;nica, assim como o facto     de a pergunta de revis&#227;o ter sido orientada para um POEM <i>(Patient Oriented Evidence that Matters).</i> No entanto, &#233; importante     relembrar que os resultados desta revis&#227;o n&#227;o poder&#227;o ser compreendidos como     recomenda&#231;&#245;es.</p>     <p>&nbsp;</p>       ]]></body>
<body><![CDATA[<p><b>REFER&#202;NCIAS     BIBLIOGR&#193;FICAS </b></p>       <!-- ref --><p>1. American     Diabetes Association. Standards of medical care in diabetes, 2014. Diabetes     Care. 2014;37 Suppl 1:S14-80.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=1364286&pid=S2182-5173201600050000600001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>       <!-- ref --><p>2. Alvarenga     C. Hipertens&#227;o arterial na diabetes mellitus tipo 2: evid&#234;ncia para a abordagem     terap&#234;utica. Rev Port Clin Geral. 2005;21(6):597-604.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=1364288&pid=S2182-5173201600050000600002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>       <!-- ref --><p>3.     Gardete-Correia L, Boavida JM, Raposo JF, Mesquita AC, Fona C, Carvalho R, et     al. First diabetes prevalence study in Portugal: PREVADIAB study. Diabet Med.     2010;27(8):879-81.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=1364290&pid=S2182-5173201600050000600003&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --> </p>       <!-- ref --><p>4. Mancia G,     Fagard R, Narkiewicz K, Red&#243;n J, Zanchetti A, B&#246;hm M, et al. 2013 ESH/ESC     Guidelines for the management of arterial hypertension: the Task Force for the     management of arterial hypertension of the European Society of Hypertension     (ESH) and of the European Society of Cardiology (ESC). J Hypertens.     2013;31(7):1281-357.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=1364292&pid=S2182-5173201600050000600004&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --> </p>       <p>5. Giestas,     A., et al. Sistema renina-angiotensina-aldosterona e a sua modula&#231;&#227;o     farmacol&#243;gica (Renin-angiotensin-aldosterone system (RAAS) and its     pharmacologic modulation). Acta Med Port. 2010;23(4):677-88. Portuguese</p>       ]]></body>
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FDA (Internet); updated 2016 Jan 1.     Available from: <a href="http://www.fda.gov/Drugs/DrugSafety/ucm402323.htm" target="_blank">http://www.fda.gov/Drugs/DrugSafety/ucm402323.htm</a> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=1364306&pid=S2182-5173201600050000600012&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p>13.     Chobanian AV, Bakris GL, Black HR, Cushman WC, Green LA, Izzo JL Jr, et al. The     seventh report of the Joint National Committee on Prevention, Detection,     Evaluation, and Treatment of High Blood Pressure: the JNC 7 report. 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N Engl J Med. 2004;351(19):1952-61.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=1364344&pid=S2182-5173201600050000600033&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --> </p>       <p>&nbsp;</p>     <p><a href="#topc0">Endere&ccedil;o para correspond&ecirc;ncia</a> | <a href="#topc0">Direcci&oacute;n para correspondencia</a> | <a href="#topc0">Correspondence</a><a name="c0"></a></p>      <p>Paula     Fernandes Mendes</p>     <p>Rua Dr. Jos&#233;     Augusto da Silva, n&#186; 954</p>     <p>E-mail: <a href="mailto:paulafm3@gmail.com">paulafm3@gmail.com</a>     </p>       <p>&nbsp;</p>       <p><b>Conflito   de interesses</b></p>       <p>Os autores     declaram n&#227;o ter conflitos de interesses.</p>     <p>&nbsp;</p>       ]]></body>
<body><![CDATA[<p><b>Recebido em 23-11-2015</b></p>       <p><b>Aceite para publica&#231;&#227;o em 10-09-2016</b></p>       ]]></body><back>
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