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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">WQ3GpjDcF7XVPWsXpfBnHKN</article-id>
      <article-id specific-use="scielo-v2" pub-id-type="publisher-id">S0066-782X2023000100201</article-id>
      <article-id pub-id-type="other">00201</article-id>
      <article-id pub-id-type="doi">10.36660/abc.20220860</article-id>
      <article-categories>
        <subj-group subj-group-type="heading">
          <subject>Minieditorial</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title>Dor Tor&#225;cica Persistente ap&#243;s Infec&#231;&#227;o COVID-19. Os Par&#226;metros Ecocardiogr&#225;ficos de Strain Podem Ter um Papel no Diagn&#243;stico e na Avalia&#231;&#227;o Progn&#243;stica?</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <contrib-id contrib-id-type="orcid">0000-0002-1625-1459</contrib-id>
          <name>
            <surname>Trabulo</surname>
            <given-names>Marisa</given-names>
          </name>
          <xref ref-type="aff" rid="aff1">
            <sup>1</sup>
          </xref>
        </contrib>
      </contrib-group>
      <aff id="aff1">
        <label>1</label>
        <institution content-type="orgname">Hospital Santa Cruz</institution>
        <addr-line>
          <named-content content-type="city">Carnaxide</named-content>
        </addr-line>
        <country country="PT">Portugal</country>
        <institution content-type="original">Hospital Santa Cruz, Carnaxide &#8211; Portugal</institution>
      </aff>
      <author-notes>
        <corresp id="c01"> Correspond&#234;ncia: Marisa Trabulo &#8226; Hospital Santa Cruz &#8211; Av. Prof Reynaldo Santos, Carnaxide 2790-134 &#8211; Portugal E-mail: <email>marisatrabulo@hotmail.com</email> </corresp>
      </author-notes>
      <pub-date date-type="pub" publication-format="electronic">
        <day>10</day>
        <month>02</month>
        <year>2023</year>
      </pub-date>
      <pub-date date-type="collection" publication-format="electronic">
        <month>01</month>
        <year>2023</year>
      </pub-date>
      <volume>120</volume>
      <issue>1</issue>
      <elocation-id>e20220860</elocation-id>
      <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, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. </license-p>
        </license>
      </permissions>
      <kwd-group xml:lang="pt">
        <kwd>COVID-19</kwd>
        <kwd>Ecocardiografia sob Estresse</kwd>
        <kwd>Miocardite</kwd>
      </kwd-group>
      <counts>
        <fig-count count="0"/>
        <table-count count="0"/>
        <equation-count count="0"/>
        <ref-count count="13"/>
      </counts>
    </article-meta>
  </front>
  <body>
    <p>Quase tr&#234;s anos depois do surto da pandemia de COVID-19, o n&#250;mero de casos graves est&#225; diminuindo com a implementa&#231;&#227;o em larga escala da vacina, mas muitos efeitos colaterais a longo prazo ainda est&#227;o afetando muitos pacientes que contra&#237;ram o v&#237;rus.</p>
    <p>Em uma metan&#225;lise de 2021,<sup><xref rid="B1" ref-type="bibr">1</xref></sup>os cinco efeitos de longo prazo mais comuns da infec&#231;&#227;o por COVID-19 foram fadiga (58%), dor de cabe&#231;a (44%), dist&#250;rbio de aten&#231;&#227;o (27%), perda de cabelo (25%) e dispneia (24%). A dor tor&#225;cica esteve presente em 16% dos pacientes, e preval&#234;ncia semelhante foi encontrada em outros estudos.<sup><xref rid="B2" ref-type="bibr">2</xref></sup></p>
    <p>Embora existam causas alternativas n&#227;o card&#237;acas para dor tor&#225;cica p&#243;s-covid, como problemas p&#243;s-respirat&#243;rios, s&#237;ndrome inflamat&#243;ria musculoesquel&#233;tica,<sup><xref rid="B3" ref-type="bibr">3</xref></sup> ou mesmo tromboembolismo pulmonar pr&#233;vio, sintomas card&#237;acos persistentes, incluindo dor tor&#225;cica, palpita&#231;&#245;es e taquicardia, podem indicar sequelas card&#237;acas subjacentes e merecem investiga&#231;&#227;o adicional.</p>
    <p>No artigo de &#214;zdemir et al.<sup><xref rid="B4" ref-type="bibr">4</xref></sup> mostraram uma associa&#231;&#227;o entre par&#226;metros ecocardiogr&#225;ficos (SE) de strain e achados de resson&#226;ncia magn&#233;tica card&#237;aca (RMC) em pacientes com dor tor&#225;cica persistente ap&#243;s a recupera&#231;&#227;o da infec&#231;&#227;o por COVID-19. Em compara&#231;&#227;o com a fra&#231;&#227;o de eje&#231;&#227;o do ventr&#237;culo esquerdo (FEVE), o strain global longitudinal e circunferencial teve uma rela&#231;&#227;o mais forte com o envolvimento mioc&#225;rdico associado ao COVID-19, especificamente miocardite pr&#233;via avaliada por RMC.</p>
    <p>A miocardite durante a infec&#231;&#227;o ativa por covid &#233; frequentemente subcl&#237;nica e subdiagnosticada, mas sua preval&#234;ncia pode ser significativa.<sup><xref rid="B5" ref-type="bibr">5</xref></sup> O progn&#243;stico a longo prazo da miocardite neste cen&#225;rio ainda &#233; desconhecido, e mais estudos s&#227;o necess&#225;rios para determinar se a miocardite por COVID-19 tem resultados semelhantes em compara&#231;&#227;o com a miocardite por outras causas.</p>
    <p>Em um estudo de uma coorte de pacientes recentemente recuperados da infec&#231;&#227;o por COVID-19, a RMC revelou envolvimento card&#237;aco em 78 pacientes (78%) e inflama&#231;&#227;o mioc&#225;rdica em curso em 60 pacientes (60%). Esta investiga&#231;&#227;o n&#227;o encontrou associa&#231;&#227;o entre a incid&#234;ncia de sequelas card&#237;acas e a gravidade da doen&#231;a aguda por coronav&#237;rus e condi&#231;&#245;es pr&#233;-existentes.<sup><xref rid="B6" ref-type="bibr">6</xref></sup></p>
    <p>Em um estudo em atletas que se recuperaram de COVID-19, a RMC encontrou evid&#234;ncias de inflama&#231;&#227;o mioc&#225;rdica em 46% dos pacientes.<sup><xref rid="B7" ref-type="bibr">7</xref></sup></p>
    <p>Embora historicamente a bi&#243;psia endomioc&#225;rdica represente o padr&#227;o-ouro diagn&#243;stico da miocardite aguda, nos &#250;ltimos anos, a RMC emergiu como a principal modalidade de diagn&#243;stico e estratifica&#231;&#227;o de risco da miocardite.</p>
    <p>Al&#233;m disso, a RMC &#233; o padr&#227;o-ouro para quantificar os volumes biventriculares e as fra&#231;&#245;es de eje&#231;&#227;o. A RMC &#233; recomendada em pacientes com suspeita cl&#237;nica de miocardite ou dor tor&#225;cica, coron&#225;rias normais e troponina elevada para o diagn&#243;stico diferencial de origem isqu&#234;mica versus n&#227;o isqu&#234;mica.<sup><xref rid="B8" ref-type="bibr">8</xref></sup></p>
    <p>O diagn&#243;stico de RMC geralmente &#233; baseado em uma apresenta&#231;&#227;o cl&#237;nica consistente com miocardite em conjunto com a presen&#231;a de realce tardio pelo gadol&#237;nio (RTG) em padr&#245;es t&#237;picos e evid&#234;ncia de edema mioc&#225;rdico na imagem T2. O RTG detectado pela RMC reflete les&#227;o mioc&#225;rdica, ou seja, necrose e fibrose.</p>
    <p>V&#225;rios estudos de RMC mostraram o poderoso valor diagn&#243;stico e progn&#243;stico do RTG na miocardite.<sup><xref rid="B9" ref-type="bibr">9</xref></sup></p>
    <p>Nos &#250;ltimos anos, a medi&#231;&#227;o da deforma&#231;&#227;o longitudinal global e regional (GLS) do ventr&#237;culo esquerdo tem sido extensivamente estudada para detectar a disfun&#231;&#227;o card&#237;aca em muitos dist&#250;rbios cardiovasculares. Mesmo anormalidades sutis do strain mioc&#225;rdico s&#227;o preditores poderosos de eventos adversos em v&#225;rias doen&#231;as cardiovasculares, tendo um valor incremental para a fra&#231;&#227;o de eje&#231;&#227;o e outros fatores de risco tradicionais.<sup><xref rid="B10" ref-type="bibr">10</xref>,<xref rid="B11" ref-type="bibr">11</xref></sup></p>
    <p>A GLS reflete a contra&#231;&#227;o longitudinal do mioc&#225;rdio. Este m&#233;todo &#233; mais independente do operador e mais reprodut&#237;vel do que a FE.</p>
    <p>Em pacientes com miocardite aguda e FEVE preservada, foi detectada uma redu&#231;&#227;o significativa da GLS em compara&#231;&#227;o com indiv&#237;duos saud&#225;veis. Al&#233;m disso, o strain longitudinal regional acrescentou informa&#231;&#245;es importantes para a localiza&#231;&#227;o e exstrain da les&#227;o mioc&#225;rdica. Esses achados foram favoravelmente comparados com a quantifica&#231;&#227;o da RMC do realce tardio do gadol&#237;nio.<sup><xref rid="B12" ref-type="bibr">12</xref></sup></p>
    <p>Na miocardite por COVID-19, a GLS basal, a FEVE e a extens&#227;o do RTG na RMC foram preditores independentes de recupera&#231;&#227;o funcional no seguimento.<sup><xref rid="B13" ref-type="bibr">13</xref></sup></p>
    <p>A confirma&#231;&#227;o diagn&#243;stica de miocardite, seja relacionada com a COVID-19 ou n&#227;o, continuar&#225; a depender da RMC e da bi&#243;psia endomioc&#225;rdica quando indicada, mas, dadas as evid&#234;ncias atuais e uma vez que o acesso &#224; RMC pode ser limitado, um m&#233;todo mais acess&#237;vel como a avalia&#231;&#227;o de strain 2D pode desempenhar um papel na triagem e sele&#231;&#227;o de pacientes para uma avalia&#231;&#227;o posterior mais extensa.</p>
  </body>
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    <fn-group>
      <fn id="fn1">
        <p>
          <italic>Minieditorial referente ao artigo: Avalia&#231;&#227;o Ecocardiogr&#225;fica com Strain do Envolvimento Mioc&#225;rdico em Pacientes com Dor Tor&#225;cica Cont&#237;nua ap&#243;s Infec&#231;&#227;o por COVID-19</italic>
        </p>
      </fn>
    </fn-group>
  </back>
  <sub-article article-type="translation" id="TRen" 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>Persistent Chest Pain after COVID-19 Infection. Can Strain Echo Parameters Play a Role in Diagnosis and Prognostication?</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <contrib-id contrib-id-type="orcid">0000-0002-1625-1459</contrib-id>
          <name>
            <surname>Trabulo</surname>
            <given-names>Marisa</given-names>
          </name>
          <xref ref-type="aff" rid="aff1001">
            <sup>1</sup>
          </xref>
        </contrib>
      </contrib-group>
      <aff id="aff1001">
        <label>1</label>
        <country country="PT">Portugal</country>
        <institution content-type="original">Hospital Santa Cruz, Carnaxide &#8211; Portugal</institution>
      </aff>
      <author-notes>
        <corresp id="c01001"> Mailing Address: Marisa Trabulo &#8226; Hospital Santa Cruz &#8211; Av. Prof Reynaldo Santos, Carnaxide 2790-134 &#8211; Portugal E-mail: marisatrabulo@hotmail.com </corresp>
      </author-notes>
      <kwd-group xml:lang="en">
        <kwd>COVID-19</kwd>
        <kwd>Stress Echocardiographies</kwd>
        <kwd>Myocarditis</kwd>
      </kwd-group>
    </front-stub>
    <body>
      <p>Almost three years after the outbreak of the COVID-19 pandemic, the number of serious cases is decreasing with the large-scale implementation of the vaccine, but many long-term side effects are still affecting many patients who have previously contracted the virus.</p>
      <p>In a 2021 meta-analysis,<sup><xref rid="B1" ref-type="bibr">1</xref></sup> the five most common long-term effects of COVID-19 infection were fatigue (58%), headache (44%), attention disorder (27%), hair loss (25%), and dyspnea (24%). Chest pain was present in 16% of the patients, and a similar prevalence was found in other studies.<sup><xref rid="B2" ref-type="bibr">2</xref></sup></p>
      <p>Although there are alternative non-cardiac causes for post-covid chest pain, like post-respiratory problems, musculoskeletal inflammatory syndrome,<sup><xref rid="B3" ref-type="bibr">3</xref></sup> or even previous pulmonary thromboembolism, persistent cardiac symptoms, including chest pain, palpitations and tachycardia may indicate underlying cardiac sequelae and deserve further investigation.</p>
      <p>In the article by &#214;zdemir et al.<sup><xref rid="B4" ref-type="bibr">4</xref></sup> showed an association between strain echocardiographic (SE) parameters and cardiac magnetic resonanc (CMR) findings in patients with persistent chest pain after recovery from COVID-19 infection. Compared with the left ventricular ejection fraction (LVEF), the global longitudinal and circumferential strain had a stronger relationship with long-COVID-associated myocardial involvement, specifically previous myocarditis assessed by CMR.</p>
      <p>Myocarditis during active covid infection is frequently sub-clinical and underdiagnosed, but its prevalence may be significant.<sup><xref rid="B5" ref-type="bibr">5</xref></sup> The long-term prognosis of myocarditis in this setting is still unknown, and further study is needed to determine whether COVID-19 myocarditis has similar outcomes compared with myocarditis from other causes.</p>
      <p>In a study of a cohort of patients recently recovered from COVID-19 infection, CMR revealed cardiac involvement in 78 patients (78%) and ongoing myocardial inflammation in 60 patients (60%). This investigation found no association between the incidence of cardiac sequela and the severity of acute coronavirus illness and pre-existing conditions.<sup><xref rid="B6" ref-type="bibr">6</xref></sup></p>
      <p>An investigation of athletes who recovered from COVID-19 with CMR found evidence of myocardial inflammation in 46% of patients.<sup><xref rid="B7" ref-type="bibr">7</xref></sup></p>
      <p>While historically, endomyocardial biopsy has represented the diagnostic gold standard of acute myocarditis, over the last few years, CMR has emerged as the primary modality for diagnosis and risk stratification of myocarditis.</p>
      <p>Furthermore, CMR is the gold standard for quantifying biventricular volumes and ejection fractions. CMR is recommended in patients with clinically suspected myocarditis or chest pain, normal coronaries, and raised troponin for the differential diagnosis of ischemic versus nonischemic origin.<sup><xref rid="B8" ref-type="bibr">8</xref></sup></p>
      <p>CMR diagnosis is often based on a clinical presentation consistent with myocarditis in conjunction with the presence of late gadolinium enhancement (LGE) in typical patterns and evidence of myocardial edema on T2 imaging. LGE detected by CMR reflects myocardial injury, i.e., necrosis and fibrosis.</p>
      <p>Several CMR studies have shown LGE&#8217;s powerful diagnostic and prognostic value in myocarditis.<sup><xref rid="B9" ref-type="bibr">9</xref></sup></p>
      <p>In recent years, the measurement of left ventricular global and regional longitudinal strain (GLS) has been extensively studied to detect cardiac dysfunction in many cardiovascular disorders. Even subtle abnormalities of myocardial strain are powerful predictors of adverse events in numerous cardiovascular diseases, having an incremental value to ejection fraction and other traditional risk factors.<sup><xref rid="B10" ref-type="bibr">10</xref>,<xref rid="B11" ref-type="bibr">11</xref></sup></p>
      <p>GLS reflects the longitudinal contraction of the myocardium. This method is more operator independent and more reproducible than EF.</p>
      <p>In patients with acute myocarditis and preserved LVEF, a significant reduction of GLS compared to healthy subjects was detected. Further, regional longitudinal strain added important information to the localization and extent of myocardial injury. These findings were favorably compared with CMR&#8217;s quantification of late gadolinium enhancement.<sup><xref rid="B12" ref-type="bibr">12</xref></sup></p>
      <p>In COVID-19 myocarditis, baseline GLS, LVEF, and the extent of LGE in CMR were independent predictors of functional recovery in the follow-up.<sup><xref rid="B13" ref-type="bibr">13</xref></sup></p>
      <p>The diagnostic confirmation of myocarditis, whether COVID-19 or non-COVID-19 related, will continue to rely on CMR and endomyocardial biopsy when indicated, but given the current evidence and since the accessibility of CMR is often limited, a more accessible method like 2D strain evaluation may play a role in screening and selecting patients for more extensive evaluation.</p>
    </body>
    <back>
      <fn-group>
        <fn id="fn1001">
          <p>
            <italic>Short Editorial related to the article: Strain Echocardiographic Evaluation of Myocardial Involvement in Patients with Continuing Chest Pain after COVID-19 Infection</italic>
          </p>
        </fn>
      </fn-group>
    </back>
  </sub-article>
</article>
