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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">3vXky7LscysDqKGYqHvTzTP</article-id>
      <article-id specific-use="scielo-v2" pub-id-type="publisher-id">S0066-782X2022000601124</article-id>
      <article-id pub-id-type="publisher-id">abc.20220196</article-id>
      <article-id pub-id-type="doi">10.36660/abc.20220196</article-id>
      <article-categories>
        <subj-group subj-group-type="heading">
          <subject>Minieditorial</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title>Classifica&#231;&#227;o da NYHA e as Vari&#225;veis do Teste de Exerc&#237;cio Cardiopulmonar em Pacientes com Insufici&#234;ncia Card&#237;aca</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="editor">
          <contrib-id contrib-id-type="orcid">0000-0002-8828-7899</contrib-id>
          <name>
            <surname>Costa</surname>
            <given-names>Ricardo Vivacqua Cardoso</given-names>
          </name>
          <xref ref-type="aff" rid="aff1">
            <sup>1</sup>
          </xref>
          <xref ref-type="corresp" rid="c1"/>
        </contrib>
        <aff id="aff1">
          <label>1</label>
          <institution content-type="orgname">Hospital Pr&#243;-card&#237;aco</institution>
          <addr-line>
            <named-content content-type="city">Rio de Janeiro</named-content>
            <named-content content-type="state">RJ</named-content>
          </addr-line>
          <country country="BR">Brasil</country>
          <institution content-type="original">Hospital Pr&#243;-card&#237;aco, Rio de Janeiro, RJ &#8211; Brasil</institution>
        </aff>
      </contrib-group>
      <author-notes>
        <corresp id="c1"><bold>Correspond&#234;ncia: Ricardo Vivacqua Cardoso Costa</bold> &#8226; Hospital Pr&#243;-card&#237;aco &#8211; Ergometria &#8211; Av. Afr&#226;nio Melo Franco, 365 AP 101. CEP <postal-code>22430-060</postal-code>, Rio de Janeiro, RJ - Brasil. E-mail: <email>vivacqua@cardiol.br</email>, <email>rvivcosta@gmail.com</email></corresp>
      </author-notes>
      <pub-date publication-format="electronic" date-type="pub">
        <day>10</day>
        <month>06</month>
        <year>2022</year>
      </pub-date>
      <pub-date publication-format="electronic" date-type="collection">
        <year>2022</year>
      </pub-date>
      <volume>118</volume>
      <issue>6</issue>
      <fpage>1124</fpage>
      <lpage>1125</lpage>
      <permissions>
        <license license-type="open-access" xml:lang="en" xlink:href="https://creativecommons.org/licenses/by/4.0/">
          <license-p>This is an open-access article distributed under the terms of the Creative Commons Attribution License</license-p>
        </license>
      </permissions>
      <kwd-group xml:lang="pt">
        <title>Palavras-chave</title>
        <kwd>Insufici&#234;ncia Card&#237;aca</kwd>
        <kwd>Hospitaliza&#231;&#227;o</kwd>
        <kwd>Mortalidade</kwd>
        <kwd>Consumo de Oxig&#234;nio</kwd>
        <kwd>Teste de Esfor&#231;o</kwd>
        <kwd>Teste de Caminhada</kwd>
        <kwd>Atividade F&#237;sica</kwd>
        <kwd>Estilo de Vida</kwd>
      </kwd-group>
      <counts>
        <fig-count count="0"/>
        <table-count count="0"/>
        <equation-count count="0"/>
        <ref-count count="10"/>
        <page-count count="2"/>
      </counts>
    </article-meta>
  </front>
  <body>
    <p>A insufici&#234;ncia card&#237;aca (IC) &#233; considerada uma doen&#231;a prevalente, limitando a sobrevida e constituindo uma das principais causas de hospitaliza&#231;&#227;o ou morte em v&#225;rios pa&#237;ses, incluindo o Brasil.<sup><xref ref-type="bibr" rid="B1">1</xref></sup> Uma classifica&#231;&#227;o cl&#237;nica dos portadores de IC pode ser considerada importante, como refer&#234;ncia inicial, por informar a condi&#231;&#227;o funcional desses pacientes. Classicamente, s&#227;o utilizadas a classifica&#231;&#227;o subjetiva da New York Heart Association (NYHA) e a objetiva de Weber.<sup><xref ref-type="bibr" rid="B2">2</xref></sup> A classifica&#231;&#227;o funcional da NYHA e o consumo de oxig&#234;nio no pico do esfor&#231;o foram determinantes na determina&#231;&#227;o da condi&#231;&#227;o funcional em portadores da Doen&#231;a de Chagas,<sup><xref ref-type="bibr" rid="B3">3</xref></sup> por&#233;m, em outras patologias observa-se certos pacientes pouco sintom&#225;ticos e com alto risco de hospitaliza&#231;&#227;o ou de morte.<sup><xref ref-type="bibr" rid="B4">4</xref></sup></p>
    <p>Nos portadores de IC considera-se, tamb&#233;m, na avalia&#231;&#227;o da capacidade funcional e progn&#243;stica o Teste de Caminhada de 6 minutos, considerado com valor preditivo de mortalidade em pacientes com IC classe funcional II e III (NYHA).<sup><xref ref-type="bibr" rid="B5">5</xref></sup></p>
    <p>Os estudos da avalia&#231;&#227;o cardiopulmonar t&#234;m se expandido, simultaneamente, aos estudos da fisiologia do exerc&#237;cio, com melhor precis&#227;o na avalia&#231;&#227;o funcional e, atrav&#233;s dos par&#226;metros obtidos no Teste Cardiopulmonar de Exerc&#237;cio (TCPE), se t&#234;m vari&#225;veis de infer&#234;ncia progn&#243;stica, as quais definem condutas e orientam na prescri&#231;&#227;o de exerc&#237;cios.<sup><xref ref-type="bibr" rid="B6">6</xref></sup></p>
    <p>O estudo de Ritt et al.,<sup><xref ref-type="bibr" rid="B7">7</xref></sup> bem delineado, analisou correla&#231;&#227;o e concord&#226;ncia entre as classes da NYHA e as vari&#225;veis do TCPE. Foram destacadas as vari&#225;veis mais estudadas na atualidade.<sup><xref ref-type="bibr" rid="B1">1</xref></sup> Sugerimos, como continua&#231;&#227;o do estudo, incluir correla&#231;&#245;es com a Pot&#234;ncia Circulat&#243;ria (Press&#227;o Arterial Sist&#243;lica m&#225;xima x V&#8217;O<sub>2</sub> pico)<sup><xref ref-type="bibr" rid="B8">8</xref></sup> e V&#8217;O<sub>2</sub> no limiar I,<sup><xref ref-type="bibr" rid="B9">9</xref></sup> par&#226;metros que determinam perspectivas progn&#243;sticas e, como futuro estudo, o escore de risco para prever a mortalidade p&#243;s alta hospitalar em pacientes com IC.<sup><xref ref-type="bibr" rid="B10">10</xref></sup></p>
    <p>Reiteramos nossos cumprimentos aos autores<sup><xref ref-type="bibr" rid="B7">7</xref></sup> pelo estudo e, pela sugest&#227;o para futuras pesquisas visando uma classifica&#231;&#227;o baseada nos par&#226;metros obtidos no TCPE, com acur&#225;cia para indica&#231;&#227;o de transplante card&#237;aco ou coloca&#231;&#227;o de ventr&#237;culo artificial.</p>
  </body>
  <back>
    <fn-group>
      <fn fn-type="other" id="fn1">
        <p>Minieditorial referente ao artigo: Baixa Concord&#226;ncia entre a Classifica&#231;&#227;o da NYHA e as Vari&#225;veis do Teste de Exerc&#237;cio Cardiopulmonar em Pacientes com Insufici&#234;ncia Card&#237;aca e Fra&#231;&#227;o de Eje&#231;&#227;o Reduzida</p>
      </fn>
    </fn-group>
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  </back>
  <sub-article article-type="translation" id="S01" xml:lang="en">
    <front-stub>
      <article-categories>
        <subj-group subj-group-type="heading">
          <subject>Short Editorial</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title>NYHA Classification and Cardiopulmonary Exercise Test Variables in Patients with Heart Failure</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="editor">
          <contrib-id contrib-id-type="orcid">0000-0002-8828-7899</contrib-id>
          <name>
            <surname>Costa</surname>
            <given-names>Ricardo Vivacqua Cardoso</given-names>
          </name>
          <xref ref-type="aff" rid="aff2">
            <sup>1</sup>
          </xref>
          <xref ref-type="corresp" rid="c2"/>
        </contrib>
        <aff id="aff2">
          <label>1</label>
          <addr-line>
            <named-content content-type="city">Rio de Janeiro</named-content>
            <named-content content-type="state">RJ</named-content>
          </addr-line>
          <country country="BR">Brazil</country>
          <institution content-type="original">Hospital Pr&#243;-card&#237;aco, Rio de Janeiro, RJ &#8211; Brazil</institution>
        </aff>
      </contrib-group>
      <author-notes>
        <corresp id="c2"><bold>Mailing Address: Ricardo Vivacqua Cardoso Costa</bold> &#8226; Hospital Pr&#243;-card&#237;aco &#8211; Ergometria &#8211; Av. Afr&#226;nio Melo Franco, 365 AP 101. Postal Code <postal-code>22430-060</postal-code>, Rio de Janeiro, RJ - Brazil. E-mail: <email>vivacqua@cardiol.br</email></corresp>
      </author-notes>
      <kwd-group xml:lang="en">
        <title>Keywords</title>
        <kwd>Heart Failure</kwd>
        <kwd>Hospitalization</kwd>
        <kwd>Mortality</kwd>
        <kwd>Oxygen Consumption</kwd>
        <kwd>Exercise Test</kwd>
        <kwd>Walk Test</kwd>
        <kwd>Physical Activity</kwd>
        <kwd>Life Style</kwd>
      </kwd-group>
    </front-stub>
    <body>
      <p>Heart failure (HF) is considered a prevalent disease, limiting survival and constituting one of the leading causes of hospitalization or death in several countries, including Brazil.<sup><xref ref-type="bibr" rid="B1">1</xref></sup> Therefore, clinical classification in patients with HF can be considered important as an initial reference, as it informs the functional condition of these patients. Classically, the subjective classification of the New York Heart Association (NYHA) and the objective classification of Weber<sup><xref ref-type="bibr" rid="B2">2</xref></sup> are the most used. The NYHA functional classification and oxygen consumption at peak exertion were decisive in determining the functional condition of patients with Chagas disease.<sup><xref ref-type="bibr" rid="B3">3</xref></sup> However, certain patients with minor symptoms are at high risk of hospitalization or death.<sup><xref ref-type="bibr" rid="B4">4</xref></sup></p>
      <p>In patients with HF, the 6-minute walk test is also considered in assessing functional and prognostic capacity. This test has a predictive value for mortality in patients with HF functional class II and III (NYHA).<sup><xref ref-type="bibr" rid="B5">5</xref></sup></p>
      <p>Studies of cardiopulmonary assessment have expanded, simultaneously, to studies of exercise physiology, with better precision in the functional evaluation and, through the parameters obtained in the Cardiopulmonary Exercise Test (CPET), we have prognostic inference variables, which define conducts and guide the prescription of exercises.<sup><xref ref-type="bibr" rid="B6">6</xref></sup></p>
      <p>The well-designed study by Ritt et al.<sup><xref ref-type="bibr" rid="B7">7</xref></sup> analyzed the correlation and agreement between NYHA classes and CPET variables. The most studied variables today were highlighted.<sup><xref ref-type="bibr" rid="B1">1</xref></sup> We suggest, as a continuation of the study, to include correlations with Circulatory Power (Maximum Systolic Blood Pressure x V&#8217;O2 peak)<sup><xref ref-type="bibr" rid="B8">8</xref></sup> and V&#8217;O2 at the threshold I,<sup><xref ref-type="bibr" rid="B9">9</xref></sup> parameters that determine prognostic perspectives and, as a future study, the risk score to predict post-discharge mortality in patients with HF.<sup><xref ref-type="bibr" rid="B10">10</xref></sup></p>
      <p>We reiterate our congratulations to the authors<sup><xref ref-type="bibr" rid="B7">7</xref></sup> for the study and the suggestion for future research aiming at a classification based on the parameters obtained in the CPET, with accuracy for indication of heart transplantation or placement of artificial ventricle.</p>
    </body>
    <back>
      <fn-group>
        <fn fn-type="other" id="fn2">
          <p>Short Editorial related to the article: Low Concordance between NYHA Classification and Cardiopulmonary Exercise Test Variables in Patients with Heart Failure and Reduced Ejection Fraction</p>
        </fn>
      </fn-group>
    </back>
  </sub-article>
</article>
