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  <front>
    <journal-meta>
      <journal-id journal-id-type="nlm-ta">Arq Bras Cardiol</journal-id>
      <journal-id journal-id-type="publisher-id">abc</journal-id>
      <journal-title-group>
        <journal-title>Arquivos Brasileiros de Cardiologia</journal-title>
        <abbrev-journal-title abbrev-type="publisher">Arq. Bras. Cardiol.</abbrev-journal-title>
      </journal-title-group>
      <issn pub-type="ppub">0066-782X</issn>
      <issn pub-type="epub">1678-4170</issn>
      <publisher>
        <publisher-name>Sociedade Brasileira de Cardiologia - SBC</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id specific-use="scielo-v3" pub-id-type="publisher-id">76c6hsTJHPHxxYYXf55xWXS</article-id>
      <article-id specific-use="scielo-v2" pub-id-type="publisher-id">S0066-782X2026000504203</article-id>
      <article-id pub-id-type="other">04203</article-id>
      <article-id pub-id-type="doi">10.36660/abc.20260138</article-id>
      <article-categories>
        <subj-group subj-group-type="heading">
          <subject>Carta ao Editor</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title>Hipertens&#227;o em Popula&#231;&#245;es Ind&#237;genas: Desafios Diagn&#243;sticos e Nuances da Transi&#231;&#227;o Epidemiol&#243;gica</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name>
            <surname>Belo</surname>
            <given-names>Let&#237;cia Lemos</given-names>
          </name>
          <xref ref-type="aff" rid="aff1">
            <sup>1</sup>
          </xref>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Pontes</surname>
            <given-names>Maria Clara Gomes</given-names>
          </name>
          <xref ref-type="aff" rid="aff1">
            <sup>1</sup>
          </xref>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Almeida</surname>
            <given-names>Thalisson Gon&#231;alves</given-names>
          </name>
          <xref ref-type="aff" rid="aff1">
            <sup>1</sup>
          </xref>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Oliveira</surname>
            <given-names>Tales Gabriel Ferro de</given-names>
          </name>
          <xref ref-type="aff" rid="aff1">
            <sup>1</sup>
          </xref>
        </contrib>
        <contrib contrib-type="author">
          <contrib-id contrib-id-type="orcid">0000-0003-1032-6015</contrib-id>
          <name>
            <surname>Ten&#243;rio</surname>
            <given-names>Pedro Pereira</given-names>
          </name>
          <xref ref-type="corresp" rid="c1"/>
          <xref ref-type="aff" rid="aff1">
            <sup>1</sup>
          </xref>
        </contrib>
        <aff id="aff1">
          <label>1</label>
          <institution content-type="orgname">Universidade Federal do Vale do S&#227;o Francisco</institution>
          <addr-line>
            <named-content content-type="city">Paulo Afonso</named-content>
            <named-content content-type="state">BA</named-content>
          </addr-line>
          <country country="BR">Brasil</country>
          <institution content-type="original">Universidade Federal do Vale do S&#227;o Francisco (UNIVASF), Paulo Afonso, BA - Brasil</institution>
        </aff>
      </contrib-group>
      <author-notes>
        <corresp id="c1"><label>Correspond&#234;ncia:</label><bold>Pedro Pereira Ten&#243;rio</bold> &#8226; Avenida da Amizade, 1900. CEP <postal-code>48605-780</postal-code>, Bairro Sal Torrado, Paulo Afonso, BA &#8211; Brasil E-mail: <email>pedrotenorio28@gmail.com</email> </corresp>
      </author-notes>
      <pub-date date-type="pub" publication-format="electronic">
        <day>20</day>
        <month>07</month>
        <year>2026</year>
      </pub-date>
      <pub-date date-type="collection" publication-format="electronic">
        <month>06</month>
        <year>2026</year>
      </pub-date>
      <volume>123</volume>
      <issue>5</issue>
      <elocation-id>e20260138</elocation-id>
      <history>
        <date date-type="received">
          <day>21</day>
          <month>02</month>
          <year>2026</year>
        </date>
        <date date-type="rev-recd">
          <day>25</day>
          <month>02</month>
          <year>2026</year>
        </date>
        <date date-type="accepted">
          <day>25</day>
          <month>02</month>
          <year>2026</year>
        </date>
      </history>
      <permissions>
        <license license-type="open-access" xlink:href="https://creativecommons.org/licenses/by/4.0/" xml:lang="en">
          <license-p>This is an open-access article distributed under the terms of the Creative Commons Attribution License</license-p>
        </license>
      </permissions>
      <related-article related-article-type="article" id="r1" xlink:href="10.36660/abc.20250269" ext-link-type="doi"/>
      <kwd-group xml:lang="pt">
        <title>Palavras-chave</title>
        <kwd>Hipertens&#227;o</kwd>
        <kwd>Povos Ind&#237;genas</kwd>
        <kwd>Fatores de Risco</kwd>
        <kwd>Perfil de Sa&#250;de</kwd>
        <kwd>Sa&#250;de de Popula&#231;&#245;es Ind&#237;genas</kwd>
      </kwd-group>
      <counts>
        <fig-count count="0"/>
        <table-count count="0"/>
        <equation-count count="0"/>
        <ref-count count="4"/>
      </counts>
    </article-meta>
  </front>
  <body>
    <p>
      <bold>Prezado editor,</bold>
    </p>
    <p>Submetemos esta carta para tecer considera&#231;&#245;es sobre o relevante artigo intitulado: <italic>"Preval&#234;ncia de Hipertens&#227;o Arterial Sist&#234;mica e Fatores Associados em Ind&#237;genas Atendidos em um Ambulat&#243;rio Especializado no Sul do Brasil".</italic><sup><xref ref-type="bibr" rid="B1">1</xref></sup> O estudo aborda uma lacuna cr&#237;tica no conhecimento epidemiol&#243;gico das popula&#231;&#245;es origin&#225;rias da regi&#227;o Sul, oferecendo uma vis&#227;o valiosa sobre a transi&#231;&#227;o epidemiol&#243;gica que as atinge. O trabalho destaca-se por sua import&#226;ncia social e t&#233;cnica ao preencher um vazio de dados sobre ind&#237;genas no Sul do Brasil, grupo que enfrenta desafios &#250;nicos de acesso &#224; sa&#250;de e preserva&#231;&#227;o cultural.</p>
    <p>A utiliza&#231;&#227;o de dados do segundo maior ambulat&#243;rio de m&#233;dia e alta complexidade para ind&#237;genas do pa&#237;s confere robustez &#224; an&#225;lise de pacientes em acompanhamento especializado. A forte associa&#231;&#227;o encontrada entre a hipertens&#227;o arterial sist&#234;mica (HAS) e a diabetes mellitus (IC95 1,48-3,66) refor&#231;a a necessidade de estrat&#233;gias de manejo integrado para essas doen&#231;as cr&#244;nicas. O destaque para o envelhecimento, e situa&#231;&#227;o conjugal como fatores associados permite uma compreens&#227;o mais hol&#237;stica dos riscos nessa popula&#231;&#227;o. No entanto, o sexo, as condi&#231;&#245;es de moradia, a escolaridade, tabagismo, presen&#231;a de dislipidemia, tabagismo, consumo de bebida alco&#243;lica e pr&#225;tica de atividade f&#237;sica, n&#227;o terem alcan&#231;ado signific&#226;ncia estat&#237;stica (p&lt;0,05) s&#227;o tend&#234;ncias que merecem mais estudos, pois s&#227;o abordados na Diretriz Brasileira de Hipertens&#227;o Arterial de 2025.</p>
    <p>Apesar dos m&#233;ritos do estudo, alguns pontos merecem reflex&#227;o para futuras investiga&#231;&#245;es e para a interpreta&#231;&#227;o cautelosa dos dados. Como os autores reconhecem, a coleta baseada em dados secund&#225;rios de prontu&#225;rios pode levar ao subdiagn&#243;stico ou a heterogeneidade de crit&#233;rios. Al&#233;m disso, a amostra por conveni&#234;ncia em um ambulat&#243;rio especializado pode n&#227;o refletir a realidade das aldeias mais isoladas. A falta de dados sobre como s&#227;o realizados os diagn&#243;sticos tamb&#233;m configura uma limita&#231;&#227;o, j&#225; que ferramentas padronizadas como monitoramento residencial da press&#227;o arterial ou monitoramento ambulatorial da press&#227;o arterial s&#227;o imprescind&#237;veis para monitoriza&#231;&#227;o e classifica&#231;&#227;o da HAS, tendo em vista a possibilidade de interfer&#234;ncias no diagn&#243;stico, como o "efeito do jaleco branco", que podem superestimar a real preval&#234;ncia de HAS na popula&#231;&#227;o ind&#237;gena quando n&#227;o utilizado, posteriormente, um m&#233;todos fora de consult&#243;rio para confirma&#231;&#227;o diagn&#243;stica.<sup><xref ref-type="bibr" rid="B2">2</xref></sup></p>
    <p>O aprofundamento sobre como a urbaniza&#231;&#227;o e a perda de h&#225;bitos tradicionais impactam especificamente esses comportamentos poderia enriquecer a discuss&#227;o sobre preven&#231;&#227;o, j&#225; que a Diretriz Brasileira de Hipertens&#227;o Arterial de 2025 descreve uma rela&#231;&#227;o de preval&#234;ncia mais alta de HAS em ind&#237;genas que residem em &#225;reas urbanas em compara&#231;&#227;o com ind&#237;genas que vivem em &#225;reas de menor urbaniza&#231;&#227;o.<sup><xref ref-type="bibr" rid="B3">3</xref></sup> Ademais, observa-se uma baixa preval&#234;ncia de atividade f&#237;sica (7,5%) aliado a uma parcela significativa de tabagistas e ex-tabagistas (26,6%) entre a popula&#231;&#227;o ind&#237;gena segundo os dados obtidos no artigo, o que pode atentar para um processo de transi&#231;&#227;o epidemiol&#243;gica entre esses povos, principalmente no que tange h&#225;bitos alimentares, em que, como abordado no artigo, a proximidade com os centros urbanos acarreta a uma maior facilidade e exposi&#231;&#227;o aos alimentos ultraprocessados que s&#227;o ricos em s&#243;dio. Logo, seria importante abordar nos futuros trabalhos a rela&#231;&#227;o entre o consumo exacerbado de industrializados e alimentos hipercal&#243;ricos por parte dos povos ind&#237;genas, visando quantificar a maior preval&#234;ncia de HAS e doen&#231;as cardiovasculares nessas comunidades.<sup><xref ref-type="bibr" rid="B4">4</xref></sup></p>
    <p>Por fim, o desenho transversal impede o estabelecimento de causalidade direta (causalidade reversa), sendo necess&#225;rios estudos longitudinais para monitorar a progress&#227;o da HAS e a efic&#225;cia das interven&#231;&#245;es da aten&#231;&#227;o prim&#225;ria &#224; sa&#250;de (APS). Todavia, o estudo cumpre o papel essencial de ratificar a HAS como um problema de sa&#250;de p&#250;blica urgente entre ind&#237;genas. Os achados sublinham a import&#226;ncia de uma APS fortalecida e culturalmente sens&#237;vel, capaz de atuar no diagn&#243;stico precoce e na mitiga&#231;&#227;o dos fatores de risco associados &#224; moderniza&#231;&#227;o e ao envelhecimento.</p>
  </body>
  <back>
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  </back>
  <sub-article article-type="translation" id="S1" xml:lang="en">
    <front-stub>
      <article-id pub-id-type="doi">10.36660/abc.20260138i</article-id>
      <article-categories>
        <subj-group subj-group-type="heading">
          <subject>Letter to the Editor</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title>Hypertension in Indigenous Populations: Diagnostic Challenges and Nuances of the Epidemiological Transition</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name>
            <surname>Belo</surname>
            <given-names>Let&#237;cia Lemos</given-names>
          </name>
          <xref ref-type="aff" rid="aff2">
            <sup>1</sup>
          </xref>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Pontes</surname>
            <given-names>Maria Clara Gomes</given-names>
          </name>
          <xref ref-type="aff" rid="aff2">
            <sup>1</sup>
          </xref>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Almeida</surname>
            <given-names>Thalisson Gon&#231;alves</given-names>
          </name>
          <xref ref-type="aff" rid="aff2">
            <sup>1</sup>
          </xref>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Oliveira</surname>
            <given-names>Tales Gabriel Ferro de</given-names>
          </name>
          <xref ref-type="aff" rid="aff2">
            <sup>1</sup>
          </xref>
        </contrib>
        <contrib contrib-type="author">
          <contrib-id contrib-id-type="orcid">0000-0003-1032-6015</contrib-id>
          <name>
            <surname>Ten&#243;rio</surname>
            <given-names>Pedro Pereira</given-names>
          </name>
          <xref ref-type="corresp" rid="c2"/>
          <xref ref-type="aff" rid="aff2">
            <sup>1</sup>
          </xref>
        </contrib>
        <aff id="aff2">
          <label>1</label>
          <addr-line>
            <named-content content-type="city">Paulo Afonso</named-content>
            <named-content content-type="state">BA</named-content>
          </addr-line>
          <country country="BR">Brazil</country>
          <institution content-type="original">Universidade Federal do Vale do S&#227;o Francisco (UNIVASF), Paulo Afonso, BA - Brazil</institution>
        </aff>
      </contrib-group>
      <author-notes>
        <corresp id="c2"><label>Mailing Address:</label><bold>Pedro Pereira Ten&#243;rio</bold> &#8226; Universidade Federal do Vale do S&#227;o Francisco - Avenida da Amizade, 1900. Postal Code <postal-code>48605-780</postal-code>, Bairro Sal Torrado, Paulo Afonso, BA &#8211; Brazil E-mail: <email>pedrotenorio28@gmail.com</email> </corresp>
      </author-notes>
      <related-article related-article-type="article" id="r1en" xlink:href="10.36660/abc.20250269i" ext-link-type="doi"/>
      <kwd-group xml:lang="en">
        <title>Keywords</title>
        <kwd>Hypertension</kwd>
        <kwd>Indigenous Peoples</kwd>
        <kwd>Risk Factors</kwd>
        <kwd>Health Profile</kwd>
        <kwd>Health of Indigenous Peoples</kwd>
      </kwd-group>
    </front-stub>
    <body>
      <p>
        <bold>Dear editor,</bold>
      </p>
      <p>We are submitting this letter to offer our considerations on the relevant article entitled: "Prevalence of Systemic Arterial Hypertension and Associated Factors in Indigenous People Attended at a Specialized Outpatient Clinic in Southern Brazil".<sup><xref ref-type="bibr" rid="B1">1</xref></sup> The study addresses a critical gap in the epidemiological knowledge of the native populations of the Southern region, offering valuable insight into the epidemiological transition affecting them. The work stands out for its social and technical importance in filling a data void on indigenous people in Southern Brazil, a group that faces unique challenges in accessing healthcare and preserving their culture.</p>
      <p>The use of data from the second-largest medium and high complexity outpatient clinic for indigenous people in the country lends robustness to the analysis of patients under specialized care. The strong association found between systemic arterial hypertension (SAH) and diabetes mellitus (95% CI 1.48-3.66) reinforces the need for integrated management strategies for these chronic diseases. The emphasis on aging and marital status as associated factors allows for a more holistic understanding of the risks in this population. However, the fact that sex, housing conditions, education level, smoking, presence of dyslipidemia, alcohol consumption, and physical activity did not reach statistical significance (p&lt;0.05) is a trend that deserves further study, as they are addressed in the 2025 Brazilian Hypertension Guidelines.</p>
      <p>Despite the merits of the study, some points deserve reflection for future investigations and for the cautious interpretation of the data. As the authors acknowledge, data collection based on secondary medical records can lead to underdiagnosis or heterogeneity of criteria. Furthermore, convenience sampling in a specialized outpatient clinic may not reflect the reality of more isolated villages. The lack of data on how diagnoses are made also constitutes a limitation, since standardized tools such as home blood pressure monitoring or ambulatory blood pressure monitoring are essential for monitoring and classifying hypertension, considering the possibility of diagnostic interferences, such as the "white coat effect," which can overestimate the true prevalence of hypertension in the indigenous population when out-of-office methods are not subsequently used for diagnostic confirmation.<sup><xref ref-type="bibr" rid="B2">2</xref></sup></p>
      <p>A deeper understanding of how urbanization and the loss of traditional habits specifically impact these behaviors could enrich the discussion on prevention, since the 2025 Brazilian Hypertension Guidelines describe a higher prevalence of hypertension in indigenous people residing in urban areas compared to indigenous people living in less urbanized &#225;reas.<sup><xref ref-type="bibr" rid="B3">3</xref></sup> Furthermore, a low prevalence of physical activity (7.5%) is observed, along with a significant proportion of smokers and former smokers (26.6%) among the indigenous population, according to the data obtained in the article. This may point to an epidemiological transition process among these peoples, especially regarding dietary habits, where, as discussed in the article, proximity to urban centers leads to greater ease and exposure to ultra-processed foods that are high in sodium. Therefore, it would be important to address in future studies the relationship between the excessive consumption of processed and high-calorie foods by indigenous peoples, aiming to quantify the higher prevalence of hypertension and cardiovascular diseases in these communities.<sup><xref ref-type="bibr" rid="B4">4</xref></sup></p>
      <p>Finally, the cross-sectional design prevents the establishment of direct causality (reverse causality), making longitudinal studies necessary to monitor the progression of hypertension and the effectiveness of Primary Health Care (PHC) interventions. However, the study fulfills the essential role of ratifying hypertension as an urgent public health problem among indigenous people. The findings underscore the importance of a strengthened and culturally sensitive PHC system, capable of acting in early diagnosis and mitigating risk factors associated with modernization and aging.</p>
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